From nobody Tue Jul 1 09:08:17 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 344C11A0387 for ; Tue, 1 Jul 2014 09:08:15 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.601 X-Spam-Level: X-Spam-Status: No, score=-2.601 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id T5f-5ZpvXRYL for ; Tue, 1 Jul 2014 09:08:12 -0700 (PDT) Received: from na01-bl2-obe.outbound.protection.outlook.com (mail-bl2lp0206.outbound.protection.outlook.com [207.46.163.206]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 0494D1A0386 for ; Tue, 1 Jul 2014 09:08:11 -0700 (PDT) Received: from BY2PR05MB079.namprd05.prod.outlook.com (10.242.38.16) by BY2PR05MB093.namprd05.prod.outlook.com (10.242.38.13) with Microsoft SMTP Server (TLS) id 15.0.969.15; Tue, 1 Jul 2014 16:08:09 +0000 Received: from BY2PR05MB079.namprd05.prod.outlook.com ([169.254.8.172]) by BY2PR05MB079.namprd05.prod.outlook.com ([169.254.8.172]) with mapi id 15.00.0969.007; Tue, 1 Jul 2014 16:08:08 +0000 From: "Jeffrey (Zhaohui) Zhang" To: Ross Callon , "Aissaoui, Mustapha (Mustapha)" , "jeremy.whittaker@verizon.com" , Harish Sitaraman , Kapil Arora Thread-Topic: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 Thread-Index: Ac+Kbg0JI45wiuB+QkmRpWOTfjvnXAK1repg Date: Tue, 1 Jul 2014 16:08:08 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [66.129.241.12] x-microsoft-antispam: BCL:0;PCL:0;RULEID: x-forefront-prvs: 02596AB7DA x-forefront-antispam-report: SFV:NSPM; SFS:(6009001)(164054003)(189002)(199002)(377454003)(77096002)(21056001)(85306003)(99286002)(95666004)(50986999)(76176999)(54356999)(4396001)(79102001)(76482001)(76576001)(46102001)(77982001)(19580405001)(83322001)(15975445006)(19580395003)(15202345003)(81542001)(64706001)(80022001)(20776003)(66066001)(86362001)(106356001)(101416001)(85852003)(87936001)(2656002)(83072002)(74316001)(74662001)(105586002)(74502001)(81342001)(33646001)(107046002)(99396002)(55754002)(108616002)(24736002); DIR:OUT; SFP:; SCL:1; SRVR:BY2PR05MB093; H:BY2PR05MB079.namprd05.prod.outlook.com; FPR:; MLV:sfv; PTR:InfoNoRecords; MX:1; A:1; LANG:en; Content-Type: multipart/alternative; boundary="_000_e02e587f33fd46b3b27bf917b809e28fBY2PR05MB079namprd05pro_" MIME-Version: 1.0 X-OriginatorOrg: juniper.net Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/hXjulo_wGa1PZP30XN08qTiw10c Cc: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org" Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Jul 2014 16:08:15 -0000 --_000_e02e587f33fd46b3b27bf917b809e28fBY2PR05MB079namprd05pro_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I have reviewed the draft and believe it is ready for WG adoption considera= tion. I do have one suggestion - could we allow multiple return paths to be speci= fied via multiple "Replay Mode 5" in the new "Reply Mode Order TLV" and mul= tiple Reply Path TLVs (currently it is not allowed). Thanks. Jeffrey _____________________________________________ From: Ross Callon Sent: Tuesday, June 17, 2014 4:52 PM To: Jeffrey (Zhaohui) Zhang; Aissaoui, Mustapha (Mustapha); jeremy.wh= ittaker@verizon.com Cc: draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org; mpls-= chairs@tools.ietf.org; Martin Vigoureux Subject: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simpl= e-02 Jeff, Mustapha, Jeremy; You have been selected as MPLS Review team reviewers for draft-akiya-= mpls-lsp-ping-reply-mode-simple-02. Note to authors: You have been CC'd on this email so that you can kno= w that this review is going on. However, please do not review your own docu= ment. Also please don't update the draft while the reviews are in progress = (we would like the reviewers to all review the same version). Reviews should comment on whether the document is coherent, is it use= ful (ie, is it likely to be actually useful in operational networks), and i= s the document technically sound? Also, is the text and grammar understand= able (it doesn't need to be perfect at this point, but should be reasonably= clear). We are interested in knowing whether the document is ready to be c= onsidered for WG adoption (ie, it doesn't have to be perfect at this point,= but should be a good start). Reviews should be sent to the document authors, WG co-chairs and WG s= ecretary, and CC'd to the MPLS WG email list. If necessary, Comments may be= sent privately to only the WG chairs. Are you able to review this draft by July 2, 2014? Thanks, Ross (as MPLS WG chair) --_000_e02e587f33fd46b3b27bf917b809e28fBY2PR05MB079namprd05pro_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
I have reviewed the draft and believe it is re= ady for WG adoption consideration.
 
I do have one suggestion – could we allo= w multiple return paths to be specified via multiple “Replay Mode 5&#= 8221; in the new “Reply Mode Order TLV”= and multiple Reply Path TLVs (currently it is not allowed).
 
Thanks.
Jeffrey=
_________________________________________= ____
From: Ross Callon
Sent: Tuesday, June 17, 2014 4:52 PM
To: Jeffrey (Zhaohui) Zhang; Aissaoui, Mustapha (Mustapha); jeremy.w= hittaker@verizon.com
Cc: draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org; mpls= -chairs@tools.ietf.org; Martin Vigoureux
Subject: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simp= le-02
 
 
Jeff, Mustapha, Jeremy;
 
You have been selected as MPLS Review tea= m reviewers for draft-akiya-mpls-lsp-ping-reply-mode-simple-02.
 
Note to authors: You have been CC'd on th= is email so that you can know that this review is going on. However, please= do not review your own document. Also please don’t update the draft = while the reviews are in progress (we would like the reviewers to all review the same version).
 
Reviews should comment on whether the doc= ument is coherent, is it useful (ie, is it likely to be actually useful in = operational networks), and is the document technically sound?  Also, i= s the text and grammar understandable (it doesn't need to be perfect at this point, but should be reasonably clear). = We are interested in knowing whether the document is ready to be considered= for WG adoption (ie, it doesn't have to be perfect at this point, but shou= ld be a good start).
 
Reviews should be sent to the document au= thors, WG co-chairs and WG secretary, and CC'd to the MPLS WG email list. I= f necessary, Comments may be sent privately to only the WG chairs.
 
Are you able to review this draft by July= 2, 2014?
 
Thanks, Ross
(as MPLS WG chair)
 
--_000_e02e587f33fd46b3b27bf917b809e28fBY2PR05MB079namprd05pro_-- From nobody Tue Jul 1 11:19:11 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8A55F1B288C; Tue, 1 Jul 2014 11:19:08 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -101.901 X-Spam-Level: X-Spam-Status: No, score=-101.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id o3b52wmQPXXe; Tue, 1 Jul 2014 11:19:06 -0700 (PDT) Received: from usevmg21.ericsson.net (usevmg21.ericsson.net [198.24.6.65]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 0907E1B2891; Tue, 1 Jul 2014 11:19:04 -0700 (PDT) X-AuditID: c6180641-f79916d00000623a-9c-53b2a7513929 Received: from EUSAAHC005.ericsson.se (Unknown_Domain [147.117.188.87]) by usevmg21.ericsson.net (Symantec Mail Security) with SMTP id EF.8A.25146.157A2B35; Tue, 1 Jul 2014 14:19:29 +0200 (CEST) Received: from EUSAAMB103.ericsson.se ([147.117.188.120]) by EUSAAHC005.ericsson.se ([147.117.188.87]) with mapi id 14.03.0174.001; Tue, 1 Jul 2014 14:19:02 -0400 From: Gregory Mirsky To: "mpls@ietf.org" , "rtg-bfd@ietf.org" Thread-Topic: New Version Notification for draft-mirsky-mpls-bfd-directed-00.txt Thread-Index: AQHPlLkmcHLo4kmCjEWzfUskF7x6bpuLglYg Date: Tue, 1 Jul 2014 18:19:01 +0000 Message-ID: <7347100B5761DC41A166AC17F22DF1121B7E50F6@eusaamb103.ericsson.se> References: <20140630231508.5203.4775.idtracker@ietfa.amsl.com> In-Reply-To: <20140630231508.5203.4775.idtracker@ietfa.amsl.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [147.117.188.9] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrLLMWRmVeSWpSXmKPExsUyuXRPuG7g8k3BBr/WKlrcWrqS1eLzn22M DkweS5b8ZApgjOKySUnNySxLLdK3S+DK2NJ3la1gj3DF8U372RoY/wh1MXJySAiYSLRtWMEI YYtJXLi3nq2LkYtDSOAoo8SNB13sIAkhgWWMEl8O54HYbAJGEi829oDFRQS8JJrmPAVrFhYI lFi2/w8TRDxIYuHCXjYI20hiydzXLCA2i4CKxMYr11hBbF4BX4m71x+zQMy3l3g/swmsnlPA QeLkiXPMIDYj0EHfT60Bm8ksIC5x68l8JohDBSSW7DnPDGGLSrx8/I8VwlaU2Nc/Heg2DqB6 TYn1u/QhWhUlpnQ/ZIdYKyhxcuYTlgmMorOQTJ2F0DELSccsJB0LGFlWMXKUFqeW5aYbGW5i BIb/MQk2xx2MCz5ZHmIU4GBU4uFVMN0YLMSaWFZcmXuIUZqDRUmcV7N6XrCQQHpiSWp2ampB alF8UWlOavEhRiYOTqkGxtbHyr6/OG4fM/9wc1L3XQ7vW0app72DEia6lh8pZN50rciqVPak PF+B7f6vrkIzzGYw6n//bqI3L6HF8w7/2rCevs27Lc6/FJhdE2/7f2rcrc4zegnl3Q8Lo9Ml 20LWMokHTvp2t99c+YXZEYbc7mMZMQf/TGerZTnt9HWSpYfB3ud2Ze3blViKMxINtZiLihMB Ih6NuWACAAA= Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/-yrdQ9KHVXnlmKeu5NJy4duRi7E Subject: [mpls] FW: New Version Notification for draft-mirsky-mpls-bfd-directed-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Jul 2014 18:19:08 -0000 RGVhciBBbGwsDQp3ZSd2ZSBwb3N0ZWQgYSBuZXcgZHJhZnQuIExTUCBQaW5nIGFscmVhZHkgaXMg dXNlZCB0byBib290c3RyYXAgYSBCRkQgc2Vzc2lvbiB3aXRoIEJGRCBEaXNjcmltaW5hdG9yIFRM Vi4gQSBuZXcgQkZEIFJldmVyc2UgUGF0aCBUTFYgaXMgaW50cm9kdWNlZCBpbiBvcmRlciB0byBp bnN0cnVjdCBhIGZhci1lbmQgQkZEIHBlZXIgdG8gdXNlIHBhcnRpY3VsYXIgcGF0aCBmb3IgcmV2 ZXJzZSBkaXJlY3Rpb24gb2YgdGhlIEJGRCBzZXNzaW9uLiANCg0KR3JlYXRseSBhcHByZWNpYXRl IHlvdXIgcXVlc3Rpb25zLCBjb21tZW50cy4NCg0KCVJlZ2FyZHMsDQoJCUdyZWcNCg0KLS0tLS1P cmlnaW5hbCBNZXNzYWdlLS0tLS0NCkZyb206IGludGVybmV0LWRyYWZ0c0BpZXRmLm9yZyBbbWFp bHRvOmludGVybmV0LWRyYWZ0c0BpZXRmLm9yZ10gDQpTZW50OiBNb25kYXksIEp1bmUgMzAsIDIw MTQgNDoxNSBQTQ0KVG86IEdyZWdvcnkgTWlyc2t5OyBJbHlhIFZhcmxhc2hraW47IEplZmYgVGFu dHN1cmE7IEdyZWdvcnkgTWlyc2t5OyBKZWZmIFRhbnRzdXJhOyBJbHlhIFZhcmxhc2hraW4NClN1 YmplY3Q6IE5ldyBWZXJzaW9uIE5vdGlmaWNhdGlvbiBmb3IgZHJhZnQtbWlyc2t5LW1wbHMtYmZk LWRpcmVjdGVkLTAwLnR4dA0KDQoNCkEgbmV3IHZlcnNpb24gb2YgSS1ELCBkcmFmdC1taXJza3kt bXBscy1iZmQtZGlyZWN0ZWQtMDAudHh0DQpoYXMgYmVlbiBzdWNjZXNzZnVsbHkgc3VibWl0dGVk IGJ5IEdyZWcgTWlyc2t5IGFuZCBwb3N0ZWQgdG8gdGhlIElFVEYgcmVwb3NpdG9yeS4NCg0KTmFt ZToJCWRyYWZ0LW1pcnNreS1tcGxzLWJmZC1kaXJlY3RlZA0KUmV2aXNpb246CTAwDQpUaXRsZToJ CUJpZGlyZWN0aW9uYWwgRm9yd2FyZGluZyBEZXRlY3Rpb24gKEJGRCkgRGlyZWN0ZWQgUmV0dXJu IFBhdGgNCkRvY3VtZW50IGRhdGU6CTIwMTQtMDYtMzANCkdyb3VwOgkJSW5kaXZpZHVhbCBTdWJt aXNzaW9uDQpQYWdlczoJCTgNClVSTDogICAgICAgICAgICBodHRwOi8vd3d3LmlldGYub3JnL2lu dGVybmV0LWRyYWZ0cy9kcmFmdC1taXJza3ktbXBscy1iZmQtZGlyZWN0ZWQtMDAudHh0DQpTdGF0 dXM6ICAgICAgICAgaHR0cHM6Ly9kYXRhdHJhY2tlci5pZXRmLm9yZy9kb2MvZHJhZnQtbWlyc2t5 LW1wbHMtYmZkLWRpcmVjdGVkLw0KSHRtbGl6ZWQ6ICAgICAgIGh0dHA6Ly90b29scy5pZXRmLm9y Zy9odG1sL2RyYWZ0LW1pcnNreS1tcGxzLWJmZC1kaXJlY3RlZC0wMA0KDQoNCkFic3RyYWN0Og0K ICAgQmlkaXJlY3Rpb25hbCBGb3J3YXJkaW5nIERldGVjdGlvbiAoQkZEKSBpcyBleHBlY3RlZCB0 byBtb25pdG9yIGJpLQ0KICAgZGlyZWN0aW9uYWwgcGF0aHMuICBXaGVuIGZvcndhcmQgZGlyZWN0 aW9uIG9mIGEgQkZEIHNlc3Npb24gaXMgdG8NCiAgIG1vbml0b3IgZXhwbGljaXRseSByb3V0ZWQg cGF0aCB0aGVyZSBpc1wgYSBuZWVkIHRvIGJlIGFibGUgdG8gZGlyZWN0DQogICBmYXItZW5kIEJG RCBwZWVyIHRvIHVzZSBzcGVjaWZpYyBwYXRoIGFzIHJldmVyc2UgZGlyZWN0aW9uIG9mIHRoZSBC RkQNCiAgIHNlc3Npb24uDQoNCiAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICANCg0KDQpQbGVhc2Ug bm90ZSB0aGF0IGl0IG1heSB0YWtlIGEgY291cGxlIG9mIG1pbnV0ZXMgZnJvbSB0aGUgdGltZSBv ZiBzdWJtaXNzaW9uIHVudGlsIHRoZSBodG1saXplZCB2ZXJzaW9uIGFuZCBkaWZmIGFyZSBhdmFp bGFibGUgYXQgdG9vbHMuaWV0Zi5vcmcuDQoNClRoZSBJRVRGIFNlY3JldGFyaWF0DQoNCg== From nobody Tue Jul 1 11:48:43 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 394771B27F3 for ; Tue, 1 Jul 2014 09:41:44 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -3.351 X-Spam-Level: X-Spam-Status: No, score=-3.351 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id FKL2tquqoN8P for ; Tue, 1 Jul 2014 09:41:41 -0700 (PDT) Received: from fldsmtpe02.verizon.com (fldsmtpe02.verizon.com [140.108.26.141]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 9E7CE1A0527 for ; Tue, 1 Jul 2014 09:41:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=verizon.com; i=jeremy.whittaker@verizon.com; q=dns/txt; s=corp; t=1404232901; x=1435768901; h=from:to:cc:date:subject:message-id:references: in-reply-to:mime-version; bh=iCbV1KbdjdxHUh4R39miAMEkbeEgDM07+8lWi78OqZI=; b=GaObtdjddNb8s2ehhkimcTSs3y3szH4/zdrivmPXDLlV0aKvx3Dv/VAu qVlV+ItFpSOjrpY9vOHgjiXrnuQeCy0I5dZV8jv6vWcfBYgXjC2LUYk4h VLDgZ3sJSoTllxQFZpr+uV35my/68UnBVD+LpLpNnLopUz/GpyfgqdWyv Y=; X-IronPort-Anti-Spam-Filtered: false Received: from unknown (HELO fldsmtpi01.verizon.com) ([166.68.71.143]) by fldsmtpe02.verizon.com with ESMTP; 01 Jul 2014 16:41:40 +0000 From: "Whittaker, Jeremy M" X-IronPort-AV: E=Sophos;i="5.01,582,1400025600"; d="scan'208,217";a="788626131" Received: from fhdp1lumxc7hb04.verizon.com (HELO FHDP1LUMXC7HB04.us.one.verizon.com) ([166.68.59.191]) by fldsmtpi01.verizon.com with ESMTP; 01 Jul 2014 16:41:40 +0000 Received: from FHDP1LUMXC7V32.us.one.verizon.com ([166.68.125.33]) by FHDP1LUMXC7HB04.us.one.verizon.com ([166.68.59.191]) with mapi; Tue, 1 Jul 2014 12:41:40 -0400 To: "Jeffrey (Zhaohui) Zhang" , Ross Callon , "Aissaoui, Mustapha (Mustapha)" , Harish Sitaraman , Kapil Arora Date: Tue, 1 Jul 2014 12:41:38 -0400 Thread-Topic: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 Thread-Index: Ac+Kbg0JI45wiuB+QkmRpWOTfjvnXAK1repgAAF2lXA= Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: multipart/alternative; boundary="_000_F312D51FDA29C84E96CFF955523C124B0152D726B7FHDP1LUMXC7V3_" MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/LFHq2xopwMNCZLUf7N8a_v6T1y4 X-Mailman-Approved-At: Tue, 01 Jul 2014 11:48:39 -0700 Cc: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org" Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Jul 2014 16:41:44 -0000 --_000_F312D51FDA29C84E96CFF955523C124B0152D726B7FHDP1LUMXC7V3_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I have also reviewed this draft, and in my opinion it is coherent and usefu= l. One additional suggestion is that the reverse LSP sections (3.1 and 6.1) mi= ght benefit from more explanation of the LSP types included or not included= . Nevertheless, I would recommend it move forward as well. Regards, Jeremy Whittaker From: Jeffrey (Zhaohui) Zhang [mailto:zzhang@juniper.net] Sent: Tuesday, July 01, 2014 11:08 AM To: Ross Callon; Aissaoui, Mustapha (Mustapha); Whittaker, Jeremy M; Harish= Sitaraman; Kapil Arora Cc: draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org; mpls-chairs= @tools.ietf.org; Martin Vigoureux; mpls@ietf.org Subject: RE: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-= 02 I have reviewed the draft and believe it is ready for WG adoption considera= tion. I do have one suggestion - could we allow multiple return paths to be speci= fied via multiple "Replay Mode 5" in the new "Reply Mode Order TLV" and mul= tiple Reply Path TLVs (currently it is not allowed). Thanks. Jeffrey _____________________________________________ From: Ross Callon Sent: Tuesday, June 17, 2014 4:52 PM To: Jeffrey (Zhaohui) Zhang; Aissaoui, Mustapha (Mustapha); jeremy.whittake= r@verizon.com Cc: draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org; mpls-chairs@tools.i= etf.org; Martin Vigoureux Subject: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 Jeff, Mustapha, Jeremy; You have been selected as MPLS Review team reviewers for draft-akiya-mpls-l= sp-ping-reply-mode-simple-02. Note to authors: You have been CC'd on this email so that you can know that= this review is going on. However, please do not review your own document. = Also please don't update the draft while the reviews are in progress (we wo= uld like the reviewers to all review the same version). Reviews should comment on whether the document is coherent, is it useful (i= e, is it likely to be actually useful in operational networks), and is the = document technically sound? Also, is the text and grammar understandable (= it doesn't need to be perfect at this point, but should be reasonably clear= ). We are interested in knowing whether the document is ready to be conside= red for WG adoption (ie, it doesn't have to be perfect at this point, but s= hould be a good start). Reviews should be sent to the document authors, WG co-chairs and WG secreta= ry, and CC'd to the MPLS WG email list. If necessary, Comments may be sent = privately to only the WG chairs. Are you able to review this draft by July 2, 2014? Thanks, Ross (as MPLS WG chair) --_000_F312D51FDA29C84E96CFF955523C124B0152D726B7FHDP1LUMXC7V3_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I have al= so reviewed this draft, and in my opinion it is coherent and useful.  =

 <= /p>

One additional suggestion is that the revers= e LSP sections (3.1 and 6.1) might benefit from more explanation of the LSP= types included or not included.  Nevertheless, I would recommend it m= ove forward as well.

 

Regards,

Jeremy Whittaker<= /p>

 

From: Jeffrey (Zhaohui) Zhang [mailto:zzhang@juniper= .net]
Sent: Tuesday, July 01, 2014 11:08 AM
To: Ross C= allon; Aissaoui, Mustapha (Mustapha); Whittaker, Jeremy M; Harish Sitaraman= ; Kapil Arora
Cc: draft-akiya-mpls-lsp-ping-reply-mode-simple@too= ls.ietf.org; mpls-chairs@tools.ietf.org; Martin Vigoureux; mpls@ietf.orgSubject: RE: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode= -simple-02

 = ;

I have reviewed the draft and b= elieve it is ready for WG adoption consideration.

 

<= p class=3DMsoNormal>I do have one suggestion – could we allow = multiple return paths to be specified via multiple “Replay Mode 5R= 21; in the new “Reply Mode Order TLV” and multipl= e Reply Path TLVs (currently it is not allowed).<= span style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif"'>

 

Thanks.

Jeffrey=

___________________________________= __________
From: Ross Callon
Sent: Tuesday, June 17, 2= 014 4:52 PM
To: Jeffrey (Zhaohui) Zhang; Aissaoui, Mustapha (Must= apha); jeremy.whittaker@ver= izon.com
Cc: draft-akiya-mpls-lsp-ping-reply-mode-simple@t= ools.ietf.org; mpls-chair= s@tools.ietf.org; Martin Vigoureux
Subject: MPLS-RT review of= draft-akiya-mpls-lsp-ping-reply-mode-simple-02

=

 

&nb= sp;

Jeff, Mustapha, Jeremy;

 

You have been selected as MPLS Review team reviewers= for draft-akiya-mpls-lsp-ping-reply-mode-simple-02.

<= /div>

 

Note to authors: You have been CC'd on this email so that you can know th= at this review is going on. However, please do not review your own document= . Also please don’t update the draft while the reviews are in progres= s (we would like the reviewers to all review the same version).<= /span>

 

<= p class=3DMsoNormal>Reviews should comment on whether the document is coherent, is= it useful (ie, is it likely to be actually useful in operational networks)= , and is the document technically sound?  Also, is the text and gramma= r understandable (it doesn't need to be perfect at this point, but should b= e reasonably clear). We are interested in knowing whether the document is r= eady to be considered for WG adoption (ie, it doesn't have to be perfect at= this point, but should be a good start).

<= p class=3DMsoNormal> 

Reviews s= hould be sent to the document authors, WG co-chairs and WG secretary, and C= C'd to the MPLS WG email list. If necessary, Comments may be sent privately= to only the WG chairs.

 = ;

Are you able to review this= draft by July 2, 2014?

 = ;

Thanks, Ross

(as MPLS WG chair)

 

= --_000_F312D51FDA29C84E96CFF955523C124B0152D726B7FHDP1LUMXC7V3_-- From nobody Tue Jul 1 17:58:16 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2CF2E1B27B6 for ; Tue, 1 Jul 2014 17:58:14 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -115.152 X-Spam-Level: X-Spam-Status: No, score=-115.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id AGxSBtT-_1jw for ; Tue, 1 Jul 2014 17:58:12 -0700 (PDT) Received: from rcdn-iport-1.cisco.com (rcdn-iport-1.cisco.com [173.37.86.72]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B88561B27B4 for ; Tue, 1 Jul 2014 17:58:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=4243; q=dns/txt; s=iport; t=1404262685; x=1405472285; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=mIPvYaSZ/qH0OxVOFJd72pMtIHFXluALccq1c2W3SWc=; b=VYcFXZJxaakLiDn2QtgUkXkMwjRvDwcefK2h/d/SchqI6nMCrlUk0cMb 5RLD1oy8m6OUEWS4NAyyuKtaF5cvOb/7E4Su60hfidK/YcAdkEGRWGHcj aqIVEbDXT5BAnSnJWPzVkFtEN4eH1FuAZ8ojbIvFjJYfXnZxr+xG9TUP4 o=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AiAFAK1Ys1OtJV2a/2dsb2JhbABagmkkgSzGCwGBEBZ1hAMBAQEDASdSBQcEAgEIEQQBAQsdBzIUCQgCBAENBQiIJgMJCAHFFBeMeIFFEQEfMQcGgyeBFgEEihCMP5gag0KBdzk X-IronPort-AV: E=Sophos;i="5.01,585,1400025600"; d="scan'208";a="336929379" Received: from rcdn-core-3.cisco.com ([173.37.93.154]) by rcdn-iport-1.cisco.com with ESMTP; 02 Jul 2014 00:58:05 +0000 Received: from xhc-rcd-x04.cisco.com (xhc-rcd-x04.cisco.com [173.37.183.78]) by rcdn-core-3.cisco.com (8.14.5/8.14.5) with ESMTP id s620w42F014163 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Wed, 2 Jul 2014 00:58:04 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-rcd-x04.cisco.com ([fe80::200:5efe:173.37.183.34%12]) with mapi id 14.03.0123.003; Tue, 1 Jul 2014 19:58:03 -0500 From: "Nobo Akiya (nobo)" To: "Jeffrey (Zhaohui) Zhang" , Ross Callon , "Aissaoui, Mustapha (Mustapha)" , "jeremy.whittaker@verizon.com" , Harish Sitaraman , Kapil Arora Thread-Topic: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 Thread-Index: AQHPlUa95Ejp2shyyECvEuCXXDZC9JuL84fA Date: Wed, 2 Jul 2014 00:58:02 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.247.123] Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/JxRwK7lO8u8pF1Q00yeiYLM2u3s Cc: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org" Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 02 Jul 2014 00:58:14 -0000 Hi Jeffrey, Thank you for reviewing this document. > I do have one suggestion - could we allow multiple return paths to be > specified via multiple "Replay Mode 5" in the new "Reply Mode Order TLV" > and multiple Reply Path TLVs (currently it is not allowed). Interesting, I do find what you suggested to be useful. I went back to RFC7= 110 and read up on the Reply Path TLV definition. The TLV can contain zero,= one or more FECs. Reply Path: It is used to describe the return path that an echo reply will be send along. It is variable in length and can contain zero, one or more Target FEC sub-TLVs [RFC4379]. =20 So it appears that "Reply Mode 5" can be one of the entries in the "Reply M= ode Order TLV", and "Reply Path TLV" can contain multiple FECs. (1) What is possible as is: Pref#1: Reply Mode 4 Reply via application level control channel Pref#2a: Reply Mode 5 Reply via Specified Path -> First FEC listed Pref#2b: Reply Mode 5 Reply via Specified Path -> Second FEC listed Pref#3: Reply Mode 2 Reply via an IPv4/IPv6 UDP packet (2) What is not possible as is: Pref#1: Reply Mode 4 Reply via application level control channel Pref#2: Reply Mode 5 Reply via Specified Path -> First FEC listed Pref#3: Reply Mode 2 Reply via an IPv4/IPv6 UDP packet Pref#4: Reply Mode 5 Reply via Specified Path -> Second FEC listed Granularity of really mixing up Reply Modes and return FECs like (2) cannot= be accomplished, but I'm not sure if we need such granularity and I believ= e (1) is reasonable. If you are ok with this, then I think it's worth addin= g texts to describe this usages. Do let us know you preference. Thanks! -Nobo > -----Original Message----- > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Jeffrey (Zhaohui) > Zhang > Sent: Tuesday, July 01, 2014 12:08 PM > To: Ross Callon; Aissaoui, Mustapha (Mustapha); > jeremy.whittaker@verizon.com; Harish Sitaraman; Kapil Arora > Cc: mpls@ietf.org; mpls-chairs@tools.ietf.org; draft-akiya-mpls-lsp-ping- > reply-mode-simple@tools.ietf.org > Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply- > mode-simple-02 >=20 > I have reviewed the draft and believe it is ready for WG adoption > consideration. >=20 > I do have one suggestion - could we allow multiple return paths to be > specified via multiple "Replay Mode 5" in the new "Reply Mode Order TLV" > and multiple Reply Path TLVs (currently it is not allowed). >=20 > Thanks. > Jeffrey > _____________________________________________ > From: Ross Callon > Sent: Tuesday, June 17, 2014 4:52 PM > To: Jeffrey (Zhaohui) Zhang; Aissaoui, Mustapha (Mustapha); > jeremy.whittaker@verizon.com > Cc: draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org; mpls- > chairs@tools.ietf.org; Martin Vigoureux > Subject: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple- > 02 >=20 >=20 > Jeff, Mustapha, Jeremy; >=20 > You have been selected as MPLS Review team reviewers for draft-akiya- > mpls-lsp-ping-reply-mode-simple-02. >=20 > Note to authors: You have been CC'd on this email so that you can know th= at > this review is going on. However, please do not review your own document. > Also please don't update the draft while the reviews are in progress (we > would like the reviewers to all review the same version). >=20 > Reviews should comment on whether the document is coherent, is it useful > (ie, is it likely to be actually useful in operational networks), and is = the > document technically sound?=A0 Also, is the text and grammar understandab= le > (it doesn't need to be perfect at this point, but should be reasonably cl= ear). > We are interested in knowing whether the document is ready to be > considered for WG adoption (ie, it doesn't have to be perfect at this poi= nt, > but should be a good start). >=20 > Reviews should be sent to the document authors, WG co-chairs and WG > secretary, and CC'd to the MPLS WG email list. If necessary, Comments may > be sent privately to only the WG chairs. >=20 > Are you able to review this draft by July 2, 2014? >=20 > Thanks, Ross > (as MPLS WG chair) >=20 From nobody Tue Jul 1 18:31:17 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id DF0861B27A5 for ; Tue, 1 Jul 2014 18:31:16 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -115.152 X-Spam-Level: X-Spam-Status: No, score=-115.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ZaP4Mz0IhM3B for ; Tue, 1 Jul 2014 18:31:15 -0700 (PDT) Received: from rcdn-iport-3.cisco.com (rcdn-iport-3.cisco.com [173.37.86.74]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 173B61B27A0 for ; Tue, 1 Jul 2014 18:31:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3828; q=dns/txt; s=iport; t=1404264675; x=1405474275; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=0qlRp3VJlNXotksOMvujZZQ0DgqZSu5rGrmyFaF+s/Y=; b=FUxiPhtrWqaNgV3UksppvGJlG1d5xW6f+JccbV73Tje6LQrrP5fMs57y jj1KfcjxbhWeljXfuEJyijyUi4YpLZhl+qbFPt9/OCHyFighzQFToVI+R IcSzplV+sJUtxxoihwu/hlwBdW9p2IJcANFR8bXUmlC6HHSZwRO2Nog6D 8=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Ah8FAGlgs1OtJV2d/2dsb2JhbABagmkkgSzGDAGBEBZ1hAMBAQEDAXkFBwQCAQgRBAEBCx0HMhQJCAIEAQ0FCIgmAwkIAcUVF4x4gUURAR8xBwaDJ4EWBYoQjD+YGoNCgXc5 X-IronPort-AV: E=Sophos;i="5.01,585,1400025600"; d="scan'208";a="337152751" Received: from rcdn-core-6.cisco.com ([173.37.93.157]) by rcdn-iport-3.cisco.com with ESMTP; 02 Jul 2014 01:31:14 +0000 Received: from xhc-rcd-x05.cisco.com (xhc-rcd-x05.cisco.com [173.37.183.79]) by rcdn-core-6.cisco.com (8.14.5/8.14.5) with ESMTP id s621VEJE031375 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Wed, 2 Jul 2014 01:31:14 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-rcd-x05.cisco.com ([173.37.183.79]) with mapi id 14.03.0123.003; Tue, 1 Jul 2014 20:31:13 -0500 From: "Nobo Akiya (nobo)" To: "Whittaker, Jeremy M" , "Jeffrey (Zhaohui) Zhang" , Ross Callon , "Aissaoui, Mustapha (Mustapha)" , Harish Sitaraman , Kapil Arora Thread-Topic: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 Thread-Index: AQHPlUti1OENGA+t0ESUHzyMwGQ6BpuL9uUw Date: Wed, 2 Jul 2014 01:31:12 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.247.123] Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/qD9uCqlb7PvCMpQs9Kcciek-O-0 Cc: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org" Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 02 Jul 2014 01:31:17 -0000 Hi Jeremy, Thank you for reviewing this document. > One additional suggestion is that the reverse LSP sections (3.1 and 6.1) > might benefit from more explanation of the LSP types included or not > included. Nevertheless, I would recommend it move forward as well. Agree, that will improve the readability of this document. We certain do no= t want to list LSPs restrict the term "reverse LSP" to be applicable only f= or them, but we will list associated RSVP LSPs and TP LSPs as examples. Wou= ld this be ok with you? Thanks! -Nobo > -----Original Message----- > From: Whittaker, Jeremy M [mailto:jeremy.whittaker@verizon.com] > Sent: Tuesday, July 01, 2014 12:42 PM > To: Jeffrey (Zhaohui) Zhang; Ross Callon; Aissaoui, Mustapha (Mustapha); > Harish Sitaraman; Kapil Arora > Cc: draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org; mpls- > chairs@tools.ietf.org; Martin Vigoureux; mpls@ietf.org > Subject: RE: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode- > simple-02 >=20 > I have also reviewed this draft, and in my opinion it is coherent and use= ful. >=20 > One additional suggestion is that the reverse LSP sections (3.1 and 6.1) > might benefit from more explanation of the LSP types included or not > included.=A0 Nevertheless, I would recommend it move forward as well. >=20 > Regards, > Jeremy Whittaker >=20 > From: Jeffrey (Zhaohui) Zhang [mailto:zzhang@juniper.net] > Sent: Tuesday, July 01, 2014 11:08 AM > To: Ross Callon; Aissaoui, Mustapha (Mustapha); Whittaker, Jeremy M; > Harish Sitaraman; Kapil Arora > Cc: draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org; mpls- > chairs@tools.ietf.org; Martin Vigoureux; mpls@ietf.org > Subject: RE: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode- > simple-02 >=20 > I have reviewed the draft and believe it is ready for WG adoption > consideration. >=20 > I do have one suggestion - could we allow multiple return paths to be > specified via multiple "Replay Mode 5" in the new "Reply Mode Order TLV" > and multiple Reply Path TLVs (currently it is not allowed). >=20 > Thanks. > Jeffrey > _____________________________________________ > From: Ross Callon > Sent: Tuesday, June 17, 2014 4:52 PM > To: Jeffrey (Zhaohui) Zhang; Aissaoui, Mustapha (Mustapha); > jeremy.whittaker@verizon.com > Cc: draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org; mpls- > chairs@tools.ietf.org; Martin Vigoureux > Subject: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple- > 02 >=20 >=20 > Jeff, Mustapha, Jeremy; >=20 > You have been selected as MPLS Review team reviewers for draft-akiya- > mpls-lsp-ping-reply-mode-simple-02. >=20 > Note to authors: You have been CC'd on this email so that you can know th= at > this review is going on. However, please do not review your own document. > Also please don't update the draft while the reviews are in progress (we > would like the reviewers to all review the same version). >=20 > Reviews should comment on whether the document is coherent, is it useful > (ie, is it likely to be actually useful in operational networks), and is = the > document technically sound?=A0 Also, is the text and grammar understandab= le > (it doesn't need to be perfect at this point, but should be reasonably cl= ear). > We are interested in knowing whether the document is ready to be > considered for WG adoption (ie, it doesn't have to be perfect at this poi= nt, > but should be a good start). >=20 > Reviews should be sent to the document authors, WG co-chairs and WG > secretary, and CC'd to the MPLS WG email list. If necessary, Comments may > be sent privately to only the WG chairs. >=20 > Are you able to review this draft by July 2, 2014? >=20 > Thanks, Ross > (as MPLS WG chair) >=20 From nobody Wed Jul 2 10:15:44 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D06921A01BD; Wed, 2 Jul 2014 10:15:35 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -101.901 X-Spam-Level: X-Spam-Status: No, score=-101.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id t_XYIWxZzWOx; Wed, 2 Jul 2014 10:15:32 -0700 (PDT) Received: from usevmg20.ericsson.net (usevmg20.ericsson.net [198.24.6.45]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id AC1BC1B284C; Wed, 2 Jul 2014 10:15:32 -0700 (PDT) X-AuditID: c618062d-f79206d0000014d2-6c-53b3ec47dc74 Received: from EUSAAHC008.ericsson.se (Unknown_Domain [147.117.188.96]) by usevmg20.ericsson.net (Symantec Mail Security) with SMTP id 76.87.05330.74CE3B35; Wed, 2 Jul 2014 13:25:59 +0200 (CEST) Received: from EUSAAMB103.ericsson.se ([147.117.188.120]) by EUSAAHC008.ericsson.se ([147.117.188.96]) with mapi id 14.03.0174.001; Wed, 2 Jul 2014 13:15:24 -0400 From: Gregory Mirsky To: Mach Chen , "mpls@ietf.org" Thread-Topic: New Version Notification for draft-mirsky-mpls-bfd-directed-00.txt Thread-Index: AQHPlLkmcHLo4kmCjEWzfUskF7x6bpuLglYggAB+rECAAQbgIA== Date: Wed, 2 Jul 2014 17:15:23 +0000 Message-ID: <7347100B5761DC41A166AC17F22DF1121B7E5B9B@eusaamb103.ericsson.se> References: <20140630231508.5203.4775.idtracker@ietfa.amsl.com> <7347100B5761DC41A166AC17F22DF1121B7E50F6@eusaamb103.ericsson.se> In-Reply-To: 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Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/P8fZbOeI57B64wz9LrHzAX4NiJE Cc: "rtg-bfd@ietf.org" Subject: Re: [mpls] New Version Notification for draft-mirsky-mpls-bfd-directed-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 02 Jul 2014 17:15:36 -0000 SGkgTWFjaCwNCnRoYW5rIHlvdSBmb3IgeW91ciBmZWVkYmFjay4NCkluZGVlZCwgYm90aCBkcmFm dHMgaGF2ZSBjb21tb25hbGl0aWVzLg0KSSdtIGxvb2tpbmcgZm9yd2FyZCB0byB0aGUgZGlzY3Vz c2lvbiBpbiBUb3JvbnRvIGFuZCBob3cgd2UgY2FuIGJyaW5nIHRoaXMgaWRlYSBmdXJ0aGVyLg0K DQoJUmVnYXJkcywNCgkJR3JlZw0KDQotLS0tLU9yaWdpbmFsIE1lc3NhZ2UtLS0tLQ0KRnJvbTog TWFjaCBDaGVuIFttYWlsdG86bWFjaC5jaGVuQGh1YXdlaS5jb21dIA0KU2VudDogVHVlc2RheSwg SnVseSAwMSwgMjAxNCA2OjU3IFBNDQpUbzogR3JlZ29yeSBNaXJza3kNCkNjOiBydGctYmZkQGll dGYub3JnDQpTdWJqZWN0OiBSRTogTmV3IFZlcnNpb24gTm90aWZpY2F0aW9uIGZvciBkcmFmdC1t 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aWNpdGx5IHJvdXRlZCBwYXRoIHRoZXJlIGlzXCBhIG5lZWQgdG8gYmUgYWJsZSB0byBkaXJlY3QN Cj4gICAgZmFyLWVuZCBCRkQgcGVlciB0byB1c2Ugc3BlY2lmaWMgcGF0aCBhcyByZXZlcnNlIGRp cmVjdGlvbiBvZiB0aGUgQkZEDQo+ICAgIHNlc3Npb24uDQo+IA0KPiANCj4gDQo+IA0KPiBQbGVh c2Ugbm90ZSB0aGF0IGl0IG1heSB0YWtlIGEgY291cGxlIG9mIG1pbnV0ZXMgZnJvbSB0aGUgdGlt ZSBvZiANCj4gc3VibWlzc2lvbiB1bnRpbCB0aGUgaHRtbGl6ZWQgdmVyc2lvbiBhbmQgZGlmZiBh cmUgYXZhaWxhYmxlIGF0IHRvb2xzLmlldGYub3JnLg0KPiANCj4gVGhlIElFVEYgU2VjcmV0YXJp YXQNCg0K From nobody Wed Jul 2 11:10:05 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1D3491B29F3; Wed, 2 Jul 2014 11:10:02 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 9-LFQYxzJG2M; Wed, 2 Jul 2014 11:10:00 -0700 (PDT) Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id C22A81B29EC; Wed, 2 Jul 2014 11:10:00 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: i-d-announce@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 5.5.2 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <20140702181000.1341.72023.idtracker@ietfa.amsl.com> Date: Wed, 02 Jul 2014 11:10:00 -0700 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/AQEg2bG9v7132dN2ZA80Dt9pJf4 Cc: mpls@ietf.org Subject: [mpls] I-D Action: draft-ietf-mpls-seamless-mcast-14.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 02 Jul 2014 18:10:02 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF. Title : Inter-Area P2MP Segmented LSPs Authors : Yakov Rekhter Rahul Aggarwal Filename : draft-ietf-mpls-seamless-mcast-14.txt Pages : 42 Date : 2014-07-02 Abstract: This document describes procedures for building inter-area point-to- multipoint (P2MP) segmented service LSPs by partitioning such LSPs into intra-area segments and using BGP as the inter-area routing and label distribution protocol. Within each IGP area the intra-area segments are either carried over intra-area P2MP LSPs, using P2MP LSP hierarchy, or instantiated using ingress replication. The intra-area P2MP LSPs may be signaled using P2MP RSVP-TE or P2MP mLDP. If ingress replication is used within an IGP area, then (multipoint-to-point) LDP LSPs or (point-to-point) RSVP-TE LSPs may be used in the IGP area. The applications/services that use such inter-area service LSPs may be BGP Multicast VPN, VPLS multicast, or global table multicast over MPLS. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-seamless-mcast/ There's also a htmlized version available at: http://tools.ietf.org/html/draft-ietf-mpls-seamless-mcast-14 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-seamless-mcast-14 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Wed Jul 2 12:02:48 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 86C681B2A21 for ; Wed, 2 Jul 2014 12:02:44 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.602 X-Spam-Level: X-Spam-Status: No, score=-2.602 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id h6OymgctpunH for ; Wed, 2 Jul 2014 12:02:42 -0700 (PDT) Received: from na01-by2-obe.outbound.protection.outlook.com (mail-by2lp0235.outbound.protection.outlook.com [207.46.163.235]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 62FBB1B2A31 for ; Wed, 2 Jul 2014 12:02:41 -0700 (PDT) Received: from BY2PR05CA006.namprd05.prod.outlook.com (10.242.32.36) by BL2PR05MB113.namprd05.prod.outlook.com (10.255.232.20) with Microsoft SMTP Server (TLS) id 15.0.980.8; Wed, 2 Jul 2014 19:02:39 +0000 Received: from BY2FFO11FD026.protection.gbl (2a01:111:f400:7c0c::144) by BY2PR05CA006.outlook.office365.com (2a01:111:e400:2c2a::36) with Microsoft SMTP Server (TLS) id 15.0.980.8 via Frontend Transport; Wed, 2 Jul 2014 19:02:39 +0000 Received: from P-EMF02-SAC.jnpr.net (66.129.239.16) by BY2FFO11FD026.mail.protection.outlook.com (10.1.15.215) with Microsoft SMTP Server (TLS) id 15.0.969.12 via Frontend Transport; Wed, 2 Jul 2014 19:02:39 +0000 Received: from magenta.juniper.net (172.17.27.123) by P-EMF02-SAC.jnpr.net (172.24.192.21) with Microsoft SMTP Server (TLS) id 14.3.146.0; Wed, 2 Jul 2014 12:02:37 -0700 Received: from juniper.net (sapphire.juniper.net [172.17.28.108]) by magenta.juniper.net (8.11.3/8.11.3) with ESMTP id s62J2Un58570 for ; Wed, 2 Jul 2014 12:02:33 -0700 (PDT) (envelope-from yakov@juniper.net) Message-ID: <201407021902.s62J2Un58570@magenta.juniper.net> To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <15271.1404327748.1@juniper.net> Date: Wed, 2 Jul 2014 12:02:29 -0700 From: Yakov Rekhter X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:66.129.239.16; CTRY:US; IPV:NLI; IPV:NLI; EFV:NLI; SFV:NSPM; SFS:(6009001)(37854004)(189002)(199002)(377424004)(97756001)(97736001)(99396002)(50986999)(64706001)(20776003)(47776003)(81156004)(106466001)(107046002)(46406003)(229853001)(107886001)(2351001)(54356999)(50466002)(92566001)(23726002)(74502001)(31966008)(4396001)(102836001)(16796002)(83072002)(85852003)(15202345003)(84676001)(79102001)(74662001)(92726001)(86362001)(80022001)(95666004)(21056001)(85306003)(87936001)(76482001)(77982001)(69596002)(81342001)(105596002)(44976005)(19580405001)(15975445006)(83322001)(81542001)(6806004)(19580395003)(46102001); DIR:OUT; SFP:; SCL:1; SRVR:BL2PR05MB113; H:P-EMF02-SAC.jnpr.net; FPR:; MLV:sfv; PTR:InfoDomainNonexistent; MX:1; LANG:en; X-Microsoft-Antispam: BCL:0;PCL:0;RULEID: X-Forefront-PRVS: 0260457E99 Received-SPF: SoftFail (: domain of transitioning juniper.net discourages use of 66.129.239.16 as permitted sender) Authentication-Results: spf=softfail (sender IP is 66.129.239.16) smtp.mailfrom=yakov@juniper.net; X-OriginatorOrg: juniper.net Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/OCzqMYNDOtBxovr4PnzwBtWQl6A Subject: [mpls] I-D Action: draft-ietf-mpls-seamless-mcast-14.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 02 Jul 2014 19:02:44 -0000 Folks, The revised version (-14) reflects all the comments received during the WG LC. Yakov. ------- Forwarded Message Date: Wed, 02 Jul 2014 11:10:00 -0700 From: To: cc: Subject: [mpls] I-D Action: draft-ietf-mpls-seamless-mcast-14.txt A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching Working Group o f the IETF. Title : Inter-Area P2MP Segmented LSPs Authors : Yakov Rekhter Rahul Aggarwal Filename : draft-ietf-mpls-seamless-mcast-14.txt Pages : 42 Date : 2014-07-02 Abstract: This document describes procedures for building inter-area point-to- multipoint (P2MP) segmented service LSPs by partitioning such LSPs into intra-area segments and using BGP as the inter-area routing and label distribution protocol. Within each IGP area the intra-area segments are either carried over intra-area P2MP LSPs, using P2MP LSP hierarchy, or instantiated using ingress replication. The intra-area P2MP LSPs may be signaled using P2MP RSVP-TE or P2MP mLDP. If ingress replication is used within an IGP area, then (multipoint-to-point) LDP LSPs or (point-to-point) RSVP-TE LSPs may be used in the IGP area. The applications/services that use such inter-area service LSPs may be BGP Multicast VPN, VPLS multicast, or global table multicast over MPLS. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-seamless-mcast/ There's also a htmlized version available at: http://tools.ietf.org/html/draft-ietf-mpls-seamless-mcast-14 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-seamless-mcast-14 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ _______________________________________________ mpls mailing list mpls@ietf.org https://www.ietf.org/mailman/listinfo/mpls ------- End of Forwarded Message From nobody Wed Jul 2 17:15:16 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 37A021A0AC7; Wed, 2 Jul 2014 17:15:12 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -115.152 X-Spam-Level: X-Spam-Status: No, score=-115.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 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dG1saXplZCB2ZXJzaW9uIGFuZCBkaWZmIGFyZSBhdmFpbGFibGUgYXQNCj4gdG9vbHMuaWV0Zi5v cmcuDQo+ID4NCj4gPiBUaGUgSUVURiBTZWNyZXRhcmlhdA0KDQo= From nobody Wed Jul 2 20:23:31 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 9F5001B27A1 for ; Wed, 2 Jul 2014 20:23:27 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.252 X-Spam-Level: X-Spam-Status: No, score=-4.252 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, J_CHICKENPOX_39=0.6, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id w5rBm_x4xPAt for ; Wed, 2 Jul 2014 20:23:25 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 149D31B279F for ; Wed, 2 Jul 2014 20:23:23 -0700 (PDT) Received: from 172.18.7.190 (EHLO lhreml405-hub.china.huawei.com) ([172.18.7.190]) by lhrrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id BGS78738; Thu, 03 Jul 2014 03:23:22 +0000 (GMT) Received: from SZXEMA403-HUB.china.huawei.com (10.82.72.35) by lhreml405-hub.china.huawei.com (10.201.5.242) with Microsoft SMTP Server (TLS) id 14.3.158.1; Thu, 3 Jul 2014 04:23:21 +0100 Received: from SZXEMA510-MBX.china.huawei.com ([169.254.3.190]) by SZXEMA403-HUB.china.huawei.com ([10.82.72.35]) with mapi id 14.03.0158.001; Thu, 3 Jul 2014 11:23:17 +0800 From: Mach Chen To: "mpls@ietf.org" Thread-Topic: [mpls] MPLS-RT review of draft-chen-mpls-source-label Thread-Index: AQHPe1o/FzzLYOran0u7hpVpoFCIa5terSvAgC8lRiA= Date: Thu, 3 Jul 2014 03:23:16 +0000 Message-ID: References: Your message of Fri, 16 May 2014 06:46:52 -0000. <30111.1401380562@erosen-lnx> In-Reply-To: Accept-Language: en-US, zh-CN Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.111.97.72] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/kGlZYjc4oXZfnqdFVY5RqpgklJ8 Cc: "mpls-chairs@tools.ietf.org" , Lizhong Jin , Eric Osborne Subject: Re: [mpls] MPLS-RT review of draft-chen-mpls-source-label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Jul 2014 03:23:27 -0000 Hi Yimin, Eric(s) and Lizhong, Thanks for your comments! We just uploaded two updates (Version 4 and 5) to address your comments.=20 Version 4 solved most of your comments, changes include: 1) Add text to discuss how to prevent SL from leaking to unintended domains= ; (according to Eric Rosen's comments) 2) Remove RSPV-TP related part (according to Lizhong and Eric Osborne's com= ments) 3) Add text to allow one or more SLs that can be allocated to an LSR(accord= ing to Yimin's comments); 4) Refine the Security Consideration; Here is diff from Version 03 to 04 (http://www.ietf.org/rfcdiff?url2=3Ddraf= t-chen-mpls-source-label-04), please refer. Version 5 solved one comment from Eric Rosen, add text to discuss how to pr= event LDP based SLC from leaking SLC outside SLAD. Here is diff from 04 to 05 (http://www.ietf.org/rfcdiff?url2=3Ddraft-chen-m= pls-source-label-05 ) The authors believe that the latest version has solved the received comment= s so far and is ready to be considered as an WG document. Thanks, Mach > -----Original Message----- > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Mach Chen > Sent: Tuesday, June 03, 2014 11:17 AM > To: erosen@cisco.com > Cc: mpls@ietf.org > Subject: Re: [mpls] MPLS-RT review of draft-chen-mpls-source-label >=20 > Hi Eric, >=20 > Thanks for your comments! >=20 > We are preparing an update to address the comments from the MPLS-RT > reviewers and you. >=20 > Regarding how to prevent SLC and LS leaking outside to the unintended nod= es > and/or domains, we have the following thoughts: >=20 > 1) Naturally, IGP based SLC negotiation and SL distribution will not leak= the SLC > and SL outside an IGP domain, should be no more concerns here; >=20 > 2) LDP based LSC negotiation, normally LDP is running within an AS, altho= ugh as > you said, technically, it may running across domains and leak the SLC out= side > domain. As you suggested, we will add some text to the LDP based SLC part= to > discuss this. >=20 > 3) For inter-AS scenario, presumably, BGP will be used for SLC negotiatio= n and SL > distribution, we are considering to use non-transitive attribute + policy= control > (e.g., as the way AIGP uses ) to prevent SLC and SL leaking outside to th= e > unintended domain(s). >=20 >=20 > Thanks, > Mach >=20 > > -----Original Message----- > > From: Eric Rosen [mailto:erosen@cisco.com] > > Sent: Friday, May 30, 2014 12:23 AM > > To: Mach Chen > > Cc: mpls@ietf.org > > Subject: Re: [mpls] MPLS-RT review of draft-chen-mpls-source-label > > > > Mach> My point is that the distribution mechanisms should be defined > > Mach> in separate documents > > > > I don't think anyone is really concerned right now with the number of > > documents used to define the "source label" mechanisms. The issue at > > hand is whether the "source label" proposal is architecturally sound. > > Any proposal that uses scoped identifiers has to provide mechanisms > > that prevent the identifiers from leaking out of their intended scope, = either via > the control plane or the data plane. > > Right now there is no draft or set of drafts that we can look at to > > see how the scoping is enforced. The source-label draft is just one > > piece of the architecture, and I don't think it can be accepted until > > we can determine whether the architecture can be completed. > > > > If one looks at the two proposed distribution mechanisms for which > > there are internet drafts (draft-chen-isis-source-label and > > draft-chen-ospf-source-label), we see that these two proposals only > > distribute the labels within a single IGP domain. Since the scope of > > a source label is not restricted to a single IGP domain, we can > > conclude that these two proposals are not, by themselves, adequate. > > > > The drafts also don't seem to have any procedures for dealing with the > > case where two nodes advertise the same source label. > > > > Mach> There may need other solutions (e.g., BGP extensions) for the > > Mach> distribution in that case. This should be discussed when we > > Mach> start to define the distribution mechanisms. > > > > I think we need to see the proposal for the BGP extensions before the > > source-label draft can be considered. That is, I don't think the WG > > should accept the SL draft until some progress has been made in > > defining the distribution mechanisms. > > > > Xiaohu> the SL advertisement could be done by a centralized mapping > > Xiaohu> server > > > > Sure, one could imagine a provisioning system that knows exactly which > > egress LSRs need to know the source labels for which ingress LSRs, and > > would provision the LSR accordingly. However, unless the draft is > > going to say that source labels MUST NOT be used unless there is such > > provisioning system, this doesn't really help. Also, this doesn't > > address the issue of source labels in the data plane leaking outside th= e domain. > > > > Eric> The ingress would have know, not only that the egress is capable > > Eric> of processing the source label, but that the egress will > > Eric> interpret the source label in the proper scope. The draft > > Eric> doesn't address the issue of how to ensure that ingress and > > Eric> egress agree on the intended scope of the label. > > > > Mach> For single domain case, the SLC will be only exchanged among the > > Mach> LSRs within the domain, when the ingress knows the egress can > > Mach> support SLC, it implicit indicates that the egress will > > Mach> interpret the SL in the same scope of itself. > > > > Mach> Actually, even for multiple domains, it is still the case, since > > Mach> SL will be used across domains, the SL space should be shared by > > Mach> the domains. > > > > The question is, how does the ingress LSR know that the egress LSR is > > in the same domain, or in a domain that shares the same SL space? I > > think you're assuming that the capability advertisement from the > > egress will not cross the domain boundary. Given that assumption, if > > an ingress LSR sees an SL capability advertisement from an egress LSR, > > the ingress could assume that the egress is in the same domain. > > However, the SLC signaling mechanisms described in the draft do not pre= vent > the SL Capability signal from crossing a domain boundary. > > On the contrary, the mechanisms described in the draft will cause the > > SLC to be signaled from egress to ingress with no regard for domain > boundaries. > > > > Consider, for instance, the LDP extensions. From section 6.1.1: > > > > "If all the advertised Mappings for F include the SLC TLV, then X > > MUST advertise its Mapping for F with the SLC TLV." > > > > This will cause the SLC to go from egress to ingress, with no regard fo= r > > domain boundaries. Perhaps the above should say "MAY advertise", and > > should have some discussion of policy. > > > > Section 6.1.2 proposes a BGP path attribute to signal the SL Capability= : > > > > "When Border Gateway Protocol (BGP) [RFC4271] is used for distribut= ing > > Network Layer Reachability Information (NLRI) as described in, for > > example, [RFC3107], [RFC4364], the BGP UPDATE message may include > the > > SLC attribute as part of the Path Attributes. This is an optional, > > transitive BGP attribute of value TBD3. The inclusion of this attr= ibute > > with an NLRI indicates that the advertising BGP router can process > > Source Labels as an egress LSR for all routes in that NLRI. > > > > ... > > > > Suppose a BGP speaker T receives an UPDATE U with the SLC attribute= . T > > has two choices. T can simply re-advertise U with the SLC attribut= e if > > either of the following is true: > > > > B1: T does not change the NEXT_HOP attribute OR > > > > B2: T simply swaps labels without popping the entire label stack an= d > > processing the payload below." > > > > Note that if the SLC attribute is an optional transitive attribute, > > then if T does not understand this attribute, T will pass it along > > even if conditions B1 and B2 do not hold. (Perhaps the attribute > > needs to be > > non-transitive.) > > > > B2 is a little hard to understand. Let P be the prefix in the NLRI of > > update U. I think the intention is that the SLC attribute be left on > > by T if each of T's installed routes to P has the SLC attribute. (B2 > > as written seems to be about the data plane, but the context of this > > section is the control plane.) > > > > Even if B1 does hold, it may still be incorrect for router T to pass al= ong the SLC. > > For example, suppose the data path from R1 to R2 is as follows: > > > > R1---ASBR1---ASBR2---R2 > > > > but suppose that R1 and R2 exchange VPN routes through a different path= : > > > > R1---T1---T2---R2 > > > > where T1 and T2 aren't in the data path at all. This could occur in an= "option C" > > type of interconnect. (RFC4364 section 10 option c.) Suppose that R1 > > and R2 are in different domains. T1 and T2 would leave the next hop > > unchanged. When > > R1 has data to send to P, it would find R2 to be the next hop, and > > then would do recursive route resolution to find that ASBR1 is its > > next hop to R2. In this scenario, R1's route to P would have the SLC > > attribute, but R2 would not properly interpret R1's source label. > > > > To make this work at all, you'd have to mandate that the SLC attribute > > be attached to a route that travels along the data path (i.e., goes > > through the ASBRs), and there would have to be policy at the ASBRs > > that strips off the SLC if the ASBRs are at a domain boundary. The > > proper behavior when recursive route resolution is done would also have= to be > specified. > > > > I'm having some trouble understanding the following paragraph from the = draft: > > > > "However, if T changes the NEXT_HOP attribute for U and in the data = plane > > pops the entire label stack to process the payload, T MAY include an= SLC > > attribute for UPDATE U' if both of the following are true:" > > > > C1: T sets the NEXT_HOP attribute of U' to itself AND > > > > C2: T can process source labels. Otherwise, T MUST remove the SLC > > attribute." > > > > The term UPDATE U' doesn't appear to have been defined anywhere, > > though I assume this is meant to be the update you get when you take > > Update U and change the next hop. Does the phrase "and in the data > > plane pops the entire label stack to process the payload" mean that T > > is the egress LSR for the prefix in U's NLRI? If so, I don't think > > this entire paragraph is needed, as T will be originating an Update > > for that prefix, and will include the SLC attribute if necessary. > > > > Eric> With no structure and no "domain identifier" in the source > > Eric> label, it is very easy end up with non-unique labels within a dom= ain. > > > > Mach> There are also many non-structure cases, for example, Router ID, > > Mach> Segment ID, VE ID of BGP VPLS > > Mach> (http://tools.ietf.org/html/rfc4761#section-3.4.4 ), they work fi= ne. > > > > I have to admit that I have always regarded the VPLS VE IDs as a very b= ad idea. > > However, they do have a well-defined scope, namely a single VPLS. > > RT-based mechanisms are used to constrain their distribution so that > > they don't leak unintentionally into other VPLSes. And the VE IDs do > > not appear in the data packets. These characteristics make it > > possible to get away with an unstructured identifier space. SLs don't > > seem to have a well-defined scope, or a well-defined distribution mecha= nism, > and they do get carried by data packets. > > Leakage out of the intended domain is thus much more of a problem. So > > I don't think SLs can be compared to VPLS VE IDs. > > > > With regard to router ids, if you've ever followed any of the > > vituperative discussions that arise when router ids are discussed > > (e.g., when discussing whether a 32-bit id is appropriate for an > > IPv6-based protocol), you'll see that there are quite a few issues in t= he > management of that numbering space. > > > > Mach> In addition, even for your RT example, for L3VPN inter-AS > > Mach> scenario, the RT has to be considered as single space, the > > Mach> domain identifier does not help here. > > > > RTs are structured so that a SP can allocate RT values that are > > globally unique, not just unique within a domain. So a "domain > > identifier" is not needed. I believe it is true that some SPs use > > RTs that are not globally unique, but that is a choice they have made > > for themselves, not a choice that is forced upon them by the architectu= re. > > > > Eric> One might also ask why there is a need to use a 20-bit label to > > Eric> identify a node, instead of using some other format. > > > > Mach> We are talking about identifying the source of an LSP, and the > > Mach> label stack is the MPLS header and there are only labels, then > > Mach> seems that a label to identify the ingress LSR is a naturally cho= ice. > > > > A couple of other possibilities come readily to mind: > > > > - Treat the SLI as the bottom of the stack, and follow it with a 32-bit > > address (or even a 128-bit address) of the ingress. (Or maybe use > > something based on the "generic associated channel".) > > > > - Use two label stack entries and stuff a 32-bit "router id" in them, > > using more per-packet overhead but eliminating the need to manage a > 20-bit > > domain-wide numbering space. > > > > But perhaps the use case is easier to implement if the SL fits into > > the same > > 20 bits usually used for labels. If so, that would be worth mentioning= . > > > > With regard to the name, > > > > Xiaohu> What about IIL (Ingress Identification Label)? > > > > I do like that better. > > > > However, getting all the details right is going to be a lot of work, > > especially for something that has only one use case, and a controversia= l one at > that. > > > > > > > > > > > > > > > > > > >=20 > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls From nobody Wed Jul 2 22:50:20 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A2B941A0A94; Wed, 2 Jul 2014 22:50:19 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -101.901 X-Spam-Level: X-Spam-Status: No, score=-101.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id KaQBcm3ud0kx; Wed, 2 Jul 2014 22:50:17 -0700 (PDT) Received: from usevmg21.ericsson.net (usevmg21.ericsson.net [198.24.6.65]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 91E1D1A0336; Wed, 2 Jul 2014 22:50:17 -0700 (PDT) X-AuditID: c6180641-f79916d00000623a-24-53b49abf3e05 Received: from EUSAAHC006.ericsson.se (Unknown_Domain [147.117.188.90]) by usevmg21.ericsson.net (Symantec Mail Security) with SMTP id 52.F0.25146.FBA94B35; Thu, 3 Jul 2014 01:50:23 +0200 (CEST) Received: from EUSAAMB103.ericsson.se ([147.117.188.120]) by EUSAAHC006.ericsson.se ([147.117.188.90]) with mapi id 14.03.0174.001; Thu, 3 Jul 2014 01:50:15 -0400 From: Gregory Mirsky To: "Nobo Akiya (nobo)" , Mach Chen , "mpls@ietf.org" Thread-Topic: New Version Notification for draft-mirsky-mpls-bfd-directed-00.txt Thread-Index: AQHPlLkmcHLo4kmCjEWzfUskF7x6bpuLglYggAB+rECAAQbgIIAAZ8ZggABmrLA= Date: Thu, 3 Jul 2014 05:50:15 +0000 Message-ID: <7347100B5761DC41A166AC17F22DF1121B7E61F9@eusaamb103.ericsson.se> References: <20140630231508.5203.4775.idtracker@ietfa.amsl.com> <7347100B5761DC41A166AC17F22DF1121B7E50F6@eusaamb103.ericsson.se> <7347100B5761DC41A166AC17F22DF1121B7E5B9B@eusaamb103.ericsson.se> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [147.117.188.11] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrDLMWRmVeSWpSXmKPExsUyuXRPlO7+WVuCDTpmy1lcWCtscWvpSlaL 2R3xFp//bGN0YPGY8nsjq0fLkbesHkuW/GQKYI7isklJzcksSy3St0vgyjjf/Iq1YIpXxe4F k1kbGBd4dDFyckgImEi0X2tmhbDFJC7cW88GYgsJHGWUmNJb28XIBWQvY5Q4tGg7E0iCTcBI 4sXGHnYQW0QgV+Jb+1ZmEJtZQFOi6cRnsLiwQKDEts7LbBA1QRILF/ZC2X4S5/6/ArNZBFQk NjxdBtbLK+ArsWnZSjaIZdeYJA53tTGCJDiBEhvWnAQrYgS67vupNUwQy8Qlbj2ZzwRxtYDE kj3nmSFsUYmXj/9BfaMk8fH3fKCDOMCOW79LH6JVUWJK90N2iL2CEidnPmGZwCg2C8nUWQgd s5B0zELSsYCRZRUjR2lxalluupHhJkZg9ByTYHPcwbjgk+UhRgEORiUe3gSBLcFCrIllxZW5 hxilOViUxHk1q+cFCwmkJ5akZqemFqQWxReV5qQWH2Jk4uCUamCcfLvGelO0CN+lvda5c1xc nrIfZLniX9AqZTbBYEuEyL1wwwy/qID4fV2OSVeXtqlni8q71/OrT78xa1vrilkbGbfbLN1t yXC9tcOiZOWSs/4uGrOvLpm9J+DIxurYOr5i5fP9gYXhR19WLNwSNktU0D4xZ+sbrx3zZG68 KpzamvPZagqjmKgSS3FGoqEWc1FxIgABUh6ofwIAAA== Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/f6oczCVjdtY0mTeqYnD0xib0txQ Cc: "rtg-bfd@ietf.org" Subject: Re: [mpls] New Version Notification for draft-mirsky-mpls-bfd-directed-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Jul 2014 05:50:19 -0000 SGkgTm9ibywNCm1hbnkgdGhhbmtzIGZvciB5b3VyIHJldmlldyBhbmQgdGhvdWdodGZ1bCBjb21t 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Cj4gPg0KPiA+DQo+ID4NCj4gPiBQbGVhc2Ugbm90ZSB0aGF0IGl0IG1heSB0YWtlIGEgY291cGxl IG9mIG1pbnV0ZXMgZnJvbSB0aGUgdGltZSBvZiANCj4gPiBzdWJtaXNzaW9uIHVudGlsIHRoZSBo dG1saXplZCB2ZXJzaW9uIGFuZCBkaWZmIGFyZSBhdmFpbGFibGUgYXQNCj4gdG9vbHMuaWV0Zi5v cmcuDQo+ID4NCj4gPiBUaGUgSUVURiBTZWNyZXRhcmlhdA0KDQo= From nobody Thu Jul 3 03:17:43 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 990A21B2821; Thu, 3 Jul 2014 03:17:38 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.852 X-Spam-Level: X-Spam-Status: No, score=-4.852 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id OIjZIm4lChVC; Thu, 3 Jul 2014 03:17:36 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C42931B2815; Thu, 3 Jul 2014 03:17:35 -0700 (PDT) Received: from 172.18.7.190 (EHLO lhreml403-hub.china.huawei.com) ([172.18.7.190]) by lhrrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id BGT14870; Thu, 03 Jul 2014 10:17:34 +0000 (GMT) Received: from SZXEMA401-HUB.china.huawei.com (10.82.72.33) by lhreml403-hub.china.huawei.com (10.201.5.217) with Microsoft SMTP Server (TLS) id 14.3.158.1; Thu, 3 Jul 2014 11:17:33 +0100 Received: from SZXEMA510-MBX.china.huawei.com ([169.254.3.190]) by SZXEMA401-HUB.china.huawei.com ([10.82.72.33]) with mapi id 14.03.0158.001; Thu, 3 Jul 2014 18:17:25 +0800 From: Mach Chen To: Gregory Mirsky , "Nobo Akiya (nobo)" , "mpls@ietf.org" Thread-Topic: New Version Notification for draft-mirsky-mpls-bfd-directed-00.txt Thread-Index: AQHPlLkmcHLo4kmCjEWzfUskF7x6bpuLglYggAB+rECAAQbgIIAAZ8ZggABmrLCAAEjfoA== Date: Thu, 3 Jul 2014 10:17:25 +0000 Message-ID: References: <20140630231508.5203.4775.idtracker@ietfa.amsl.com> <7347100B5761DC41A166AC17F22DF1121B7E50F6@eusaamb103.ericsson.se> <7347100B5761DC41A166AC17F22DF1121B7E5B9B@eusaamb103.ericsson.se> <7347100B5761DC41A166AC17F22DF1121B7E61F9@eusaamb103.ericsson.se> In-Reply-To: <7347100B5761DC41A166AC17F22DF1121B7E61F9@eusaamb103.ericsson.se> Accept-Language: en-US, zh-CN Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.111.97.72] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/Btas7fKV_Wx4Ah1grX0D3D7RvUw Cc: "rtg-bfd@ietf.org" Subject: Re: [mpls] New Version Notification for draft-mirsky-mpls-bfd-directed-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol 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IGFuZCBkaWZmIGFyZSBhdmFpbGFibGUgYXQNCj4gPiB0b29scy5pZXRmLm9yZy4NCj4gPiA+DQo+ ID4gPiBUaGUgSUVURiBTZWNyZXRhcmlhdA0KDQo= From nobody Thu Jul 3 06:09:17 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E9E4F1B296A; Thu, 3 Jul 2014 06:09:14 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -115.152 X-Spam-Level: X-Spam-Status: No, score=-115.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id cbZfbyWdv8I4; Thu, 3 Jul 2014 06:09:12 -0700 (PDT) Received: from rcdn-iport-5.cisco.com (rcdn-iport-5.cisco.com [173.37.86.76]) 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ESMTP; 03 Jul 2014 13:09:12 +0000 Received: from xhc-rcd-x10.cisco.com (xhc-rcd-x10.cisco.com [173.37.183.84]) by rcdn-core-10.cisco.com (8.14.5/8.14.5) with ESMTP id s63D9BaF009404 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Thu, 3 Jul 2014 13:09:11 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-rcd-x10.cisco.com ([173.37.183.84]) with mapi id 14.03.0123.003; Thu, 3 Jul 2014 08:09:11 -0500 From: "Nobo Akiya (nobo)" To: Mach Chen , Gregory Mirsky , "mpls@ietf.org" Thread-Topic: New Version Notification for draft-mirsky-mpls-bfd-directed-00.txt Thread-Index: AQHPlLkmcHLo4kmCjEWzfUskF7x6bpuLglYggAB+rECAAQbgIIAAZ8ZggABmrLCAAEjfoIAAME/A Date: Thu, 3 Jul 2014 13:09:10 +0000 Message-ID: References: <20140630231508.5203.4775.idtracker@ietfa.amsl.com> <7347100B5761DC41A166AC17F22DF1121B7E50F6@eusaamb103.ericsson.se> <7347100B5761DC41A166AC17F22DF1121B7E5B9B@eusaamb103.ericsson.se> <7347100B5761DC41A166AC17F22DF1121B7E61F9@eusaamb103.ericsson.se> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [161.44.212.73] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/DFzGKzP-JJ4kcn6XZRNlcZyXGsQ Cc: "rtg-bfd@ietf.org" Subject: Re: [mpls] New Version Notification for draft-mirsky-mpls-bfd-directed-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Jul 2014 13:09:15 -0000 SGkgR3JlZywgTWFjaCwNCg0KPiA+IE9uZSB3YXkgdG8gYWNoaWV2ZSB0aGUgc2FtZSBzZW1hdGlj IGlzIHRvIGludHJvZHVjZSAiU2VnbWVudCBSb3V0aW5nDQo+ID4gTVBMUyBUdW5uZWwgc3ViLVRM ViIgYW5kICJTZWdtZW50IFJvdXRpbmcgSVB2NiBUdW5uZWwgc3ViLVRMViIgdW5kZXINCj4gPiBS ZXBseSBQYXRoDQo+ID4gKFJQKSBUTFYgZGVmaW5lZCBpbiBSRkM3MTEwLiBJcyB0aGVyZSBhbnkg 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(Postfix) with ESMTP id 543021B294B; Thu, 3 Jul 2014 09:50:11 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 4K0uPp8eQkEz; Thu, 3 Jul 2014 09:50:10 -0700 (PDT) Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 2663F1B2810; Thu, 3 Jul 2014 09:50:10 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: i-d-announce@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 5.6.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <20140703165010.10993.1977.idtracker@ietfa.amsl.com> Date: Thu, 03 Jul 2014 09:50:10 -0700 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/Sz4Vvpnb8J27ODyiXa5HRFbhyGE Cc: mpls@ietf.org Subject: [mpls] I-D Action: draft-bryant-mpls-oam-udp-return-02.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Jul 2014 16:50:11 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF. Title : MPLS Performance Measurement UDP Return Path Authors : Stewart Bryant Siva Sivabalan Sagar Soni Filename : draft-bryant-mpls-oam-udp-return-02.txt Pages : 8 Date : 2014-07-03 Abstract: This document specifies the proceedure to be used by the Packet Loss and Delay Measurement for MPLS Networks protocol defined in RFC6374 when sending and processing MPLS performance management out-of-band responses for delay and loss measurements over an IP/UDP return path. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-bryant-mpls-oam-udp-return/ There's also a htmlized version available at: http://tools.ietf.org/html/draft-bryant-mpls-oam-udp-return-02 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-bryant-mpls-oam-udp-return-02 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Thu Jul 3 11:21:25 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 957DB1A03B1 for ; Thu, 3 Jul 2014 11:21:23 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -15.152 X-Spam-Level: X-Spam-Status: No, score=-15.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id oYmI-jGhYP0n for ; Thu, 3 Jul 2014 11:21:20 -0700 (PDT) Received: from alln-iport-5.cisco.com (alln-iport-5.cisco.com [173.37.142.92]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 810F11B2B28 for ; Thu, 3 Jul 2014 11:21:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=12069; q=dns/txt; s=iport; t=1404411682; x=1405621282; h=message-id:date:from:mime-version:to:cc:subject: references:in-reply-to:content-transfer-encoding; bh=uVPF+xoq8k/fVSdACsR8P6ekY1YBnUmVdCiUN4ILZ1M=; b=PqAzqluNaCdrnvxEMjwAu38W9UW2Yksfw+MA1HMrMa+Wsi2ctYYLzx9z 37K7bK7lytNZzD5nJ766AVl7VuRtm3P94dx5T7wJQ/+C2OyDW+GLfw9ZO N6mIlSWhWipEUPF4MeCvC1h24AVNQRsCnMI+LUDkIRj1MtNncwvBvFRMK U=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgwFAKOetVOtJV2T/2dsb2JhbABagw1SvzaHPwGBDBZ1hAMBAQEDAQEBASQLAQUvBAMKAQwCAgsRAQMBAQEJFggHCQMCAQIBCQwfAwYIBgEMAQUCAQGINggNyU4TBASJYYRbEQEdMwcGhD0BBJp2hw+MfINfIYE6 X-IronPort-AV: E=Sophos;i="5.01,596,1400025600"; d="scan'208";a="58145801" Received: from rcdn-core-11.cisco.com ([173.37.93.147]) by alln-iport-5.cisco.com with ESMTP; 03 Jul 2014 18:21:21 +0000 Received: from [10.98.73.155] (bxb-vlim-88110.cisco.com [10.98.73.155]) by rcdn-core-11.cisco.com (8.14.5/8.14.5) with ESMTP id s63ILHAS010877; Thu, 3 Jul 2014 18:21:17 GMT Message-ID: <53B59F1F.3000706@cisco.com> Date: Thu, 03 Jul 2014 14:21:19 -0400 From: Vanson Lim User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.1.1 MIME-Version: 1.0 To: Sam Aldrin , Mach Chen , Qin Wu References: <52C795FE.7060801@pi.nu> In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/988-nx_c5VX0SqTfICA3AwqO7FM Cc: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "draft-ietf-mpls-proxy-lsp-ping@tools.ietf.org" Subject: Re: [mpls] Working group last call on draft-ietf-mpls-proxy-lsp-ping X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Jul 2014 18:21:23 -0000 Just an update for everyone. Sam will be posting an update to the draft today/tomorrow with the changes to address the comments below. My annotated comments inline. Search for ###VLIM: The only thing remaining is a future update with the IANA assignments. Regards, -Vanson On 5/28/14, 9:04 PM, Sam Aldrin wrote: > Hi Mach and Qin, > > Please find response to comments embedded with ##RESP. > Sorry it took a while to respond but here it is anyway. > Let know if you have any further questions. We would like to make edits, close all open items and submit a new version of the draft to complete LC. > > > Comments from Qin: > > #1 > Hi, authors: > Have a quick look at this draft, It is not clear to me why proxy LSR doesn't need to wait for > The result of MPLS echo rely and then send MPLS proxy ping reply? > I know the draft says the receivers process the MPLS echo request, sending their > MPLS echo replies directly back to the initiator, however why bypass proxy LSR? > What about MPLS echo request initiating by proxy LSR is lost? How does the initiator > know the lost of MPLS echo request or reply? > What am I missing? > > ##RESP: LSP ping is designed with initiator initiating the request and maintaining the state for the same. All the transit or responding router do not maintain any state. Requiring Proxy LSRs to manage relaying the response would require it to maintain state for the entire transaction, including requiring the a timeout to be supplied by the initiator. This will require the change in architecture, which this draft is definitely not intending to do. > > > #2 > Also it is not very clear to me how to use reply mode 5, although the draft says > " > If the Reply Mode of the message header is 1 or is 5 and no errors or > modifications have occurred no MPLS proxy ping reply is sent. > " > ##RESP: There is no mention of reply mode 5. Which document are you referring to? The document refers only to mode 1, where, no reply SHOULD be sent for that mode. > > If the Reply Mode of the Proxy Request message header is "1 - do not > reply", no MPLS proxy ping reply is sent. Otherwise an MPLS proxy > ping reply message or MPLS echo request should be sent as described > below. > > #3 > It looks to me if no MPLS proxy ping rely needs to be sent, why define reply mode 5? > ###RESP: No mention of reply mode 5. If you are referring to reply mode 1, the question is for RFC4379. All I can say is, it is there to check unidirectional errors. > > #4 > Also there are a lot of nits and typos that need to be fixed, > s/ limiting the the number/ limiting the number > s/ motivaton/ motivation > s/ and and all autho-rization/ and all authorization > s/ Pprocedures/ Procedures > s/ sub-objexts/ sub-objects > s/ modificatons /modifications > s/ decribed/ described > s/ assigments/assignments > > ##RESP: Ack ###VLIM: Issue resolved. > > #5 > In section 5.2, there is no definition of reply to address field, I think it should be defined as initiator address > > ##RESP: This is the address the echo reply should be sent to, most likely the initiator, but could be something else. We will add text for the field. > > #6 > For Downstream Mapping objects, it is better to add a reference to RFC4379. > The references [McstPing] [mLDP] are now outdated and need to be updated to the corresponding RFC. > ##RESP - Ack. Will add references. ###VLIM: Changed all references of mDP to “Label Distribution Protocol Extensions for Point-to-Multipoint and Multipoint-to-Multipoint Label Switched Paths [RFC 6388] > > Regards! > -Qin > > > > ====== > > > 2) From Mach Chen > > Hi Authors, > > I just reviewed the draft, here are my comments, hope this help. > > General comments: > It would be better if you could adjust the structure of the draft to put Section 3 behind Section 5. Then the reader will not need to check definitions of the Messages and TLVs in the back and then return back keep reading the document. > > ##RESP - I feel it is good to have description before the actual format definition. Either case, one has to go back and forth to understand completely. Is there any hard preference to your suggestion? > > Specific comments: > > > 1. Section 2 > > If the source address of the MPLS echo request is not to be > set to the Proxy Request source address, the initiator must include a > Reply-to Address TLV containing the source address to use in the MPLS > echo request. > > Why we need the Reply-to Address TLV? Which address will be included in the Reply-to Address TLV? If the address is neither the initiror or the proxy LSR, this may import some security isses? > > ##RESP: We added this TLV for a reason, which at that time, was needed. From what we see now, the requestor IP will be used. Hence, this TLV will be removed. > > 2. Section 3.1 > > 2.1 > "The message MUST contain a Target FEC Stack that describes the FEC > being tested. The topmost FEC in the target FEC stack is used at the > Proxy LSR to lookup the MPLS label stack that will be used to > encapsulate the MPLS echo request packet. > " > Seems that it only needs to carry the topmost FEC, and no need to carry other FECs. And even if carried, it does not make sense. Right? > > > ##RESP: reused existing target fec stack, don’t want to restrict to topmost FEC in case there are future uses. > > > 2.2 > s /MPLS Proxy Ping message/MPLS proxy ping request message, need to look through the document to make them consistent. > ##RESP - Ack. ###VLIM: One occurrence found in section 3.1, second paragraph, Also went through the entire document and changed all occurrences of Proxy Request/Reply, MPLS Proxy Ping/Proxy Reply, etc to “MPLS proxy ping request” and “MPLS proxy ping reply”. > > > 3. Section 3.1 the sixth paragraph: > "The Proxy Request reply mode is set with one of the reply modes > defined in [RFC4379] as appropriate." > > Is the reply mode here referred to the reply mode of the MPLS proxy request, or the reply mode of the Proxy Echo Parameter. I think it's the former, right? > > And section 5.1 said: > "The MPLS Proxy Echo request echo header's Reply Mode should be set to "Reply with Proxy Info"." > > Seems they are self-contradictory here. > > ##RESP - Not really. Sec 3 is describing the reply mode should use one of the modes defined in RFC4379. While Sec 5.1 is talking about the request to query info from proxy LSR. > > 4. Section 3.1 the last second paragraph: > > s /DDSMAP)/(DDSMAP) > > ##RESP - Ack ###VLIM: Found, changed “DDSMAP)” -> “(DDMAP)” > > 5. Section 3.2, in the middle of the fourth paragraph. > > "Other filters on FECs or MPLS echo request contents MAY be applied." > > > For a Proxy LSR, it will not receive any MPLS echo request, should it be the MPLS proxy ping request here? > > > ##RESP: The sentence is talking about proxy LSR sending MPLS echo request, not receiving. > > 6. Section 3.2.1 > > 6.1 In the middle of third paragraph: > > "If the Proxy LSR is a Budnode but not > requested to return a Proxy reply, the Proxy LSR should send packets > to the downstream neighbors (no Echo reply is sent to the Proxy > Initiator to indicate that the Proxy LSR is an egress). > " > > What packets will be sent to the downstream neighbors? > > ##RESP: “MPLS Echo Request” ###VLIM: Updated from “send packets” to “send MPLS Echo Request packets” ###VLIM: Update all occurrences of Proxy Reply, to MPLS proxy ping reply, ###VLIM: Update all occurrences of "MPLS echo request", to "MPLS Echo Request" > > 6.2 > If there is no DS/DDMAPs returned, how does the initiator determine the proxy LSR is budnode or egress? > > ##RESP: wanted to have the same behavior when injecting a LSP Ping at an egress. When we ping from a bud node, if we don’t typically get an echo reply from ourselves, so we wanted to provide the ability for the Proxy requester to decide whether they want a proxy reply to by send back in response to a proxy request. is_egress return code used to indicate proxy lsr also an egress. > > > > 6.3 Last paragraph, last sentence > > s / M2MP leaf /MP2MP leaf > > ##RESP - ack ###VLIM: Updated > > 7. Section 3.2.4.1 > > 7.1 What's is "base MPLS echo request"? I suggest to remove the "base" here. > > ##RESP: Seems fine to remove. ###VLIM: 4 occurrences found, “base” removed. > > 7.2 > > "If the Explicit Differentiated Services Code Point (DSCP) flag is > set, the Requested DSCP byte is examined. If the setting is > permitted then the DSCP byte of the IP header of the MPLS Echo > Request message is set to that value. If the Proxy LSR does not > permit explicit control for the DSCP byte, the MPLS Proxy Echo > Parameters with the Explicit DSCP flag cleared MUST be included in > any MPLS proxy ping reply message to indicate why an Echo Request was > not sent. The return code MUST be set to , "Proxy ping > parameters need to be modified". If the Explicit DSCP flag is not > set, the Proxy LSR should set the Echo Request DSCP settings to the > value normally used to source LSP ping packets." > > I am not sure whether this is the right choice to let the Proxy LSR to control whether the DSCP is permitted or not. IMO, this permission should be controlled by the Receiver or Responder. > > ##RESP: This section is referring to the DSCP settings in the MPLS echo request label stack and ip header not the reply dscp. When initiating LSP pings, the sender of the lsp ping controls this setting, so it was felt that it be valuable to allow the sender of the proxy request to control this subject to restrictions imposed at the Proxy LSR. > > > > 8. Section 3.2.4.2 > > "If any additional labels are pushed > onto the stack, their TTLs are set to 255." > > what's this case? Can you clarify more about the case? > > ##RESP: Don’t want to requester have have control of the ttls for tunnels not relevant to the FEC being tested. ###VLIM: Sam worked with Mach to address his concern with wording in this section. > > 9. Section 4.2 > " > The MPLS proxy ping request message MAY contain the following > TLVs: > " > You may also need to contain the Type 21 and 22 TLV. > > ##RESP: okay, we’ll add these tlv’s to the list of tlv’s to be included in the proxy request for including into the echo requests. ###VLIM: Added 21 Reply Path [RFC7110] 22 Reply TC [RFC7110] > > 10.Section 5.1 > > s /MPLS Proxy Echo Request message /MPLS proxy ping request message, same as the above comment 2.2 > ##RESP - ack ###VLIM: Changed. > > > Best regards, > Mach > > Cheers > -sam > > >>> -----Original Message----- >>> From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Loa Andersson >>> Sent: Saturday, January 04, 2014 1:03 PM >>> To: mpls@ietf.org >>> Cc: mpls-chairs@tools.ietf.org; draft-ietf-mpls-proxy-lsp-ping@tools.ietf.org >>> Subject: [mpls] Working group last call on draft-ietf-mpls-proxy-lsp-ping >>> >>> Working Group, >>> >>> this is to start a two week working group last call on >>> draft-ietf-mpls-proxy-lsp-ping-01.txt >>> >>> Please send your comments to working group mailing lists (mpls@ietf.org). >>> >>> We will do an IPR poll on this document in parallel thee wglc. >>> >>> There are three IPRs disclosures that relates to this document. >>> >>> The working group last call will end Friday January 20, 2914. >>> >>> /Loa >>> mpls wg co-chair >>> >>> -- >>> >>> >>> Loa Andersson email: loa@mail01.huawei.com >>> Senior MPLS Expert loa@pi.nu >>> Huawei Technologies (consultant) phone: +46 739 81 21 64 >>> _______________________________________________ >>> mpls mailing list >>> mpls@ietf.org >>> https://www.ietf.org/mailman/listinfo/mpls > . > From nobody Thu Jul 3 12:29:27 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7056B1B2B2E; Thu, 3 Jul 2014 12:29:23 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id z6V5YYyFYCVJ; Thu, 3 Jul 2014 12:29:21 -0700 (PDT) Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 3D2021A0398; Thu, 3 Jul 2014 12:29:21 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: i-d-announce@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 5.6.0.p1 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <20140703192921.12414.93629.idtracker@ietfa.amsl.com> Date: Thu, 03 Jul 2014 12:29:21 -0700 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/VU2iWUZom81TlE54sd4IM3eOyxI Cc: mpls@ietf.org Subject: [mpls] I-D Action: draft-ietf-mpls-proxy-lsp-ping-02.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Jul 2014 19:29:23 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF. Title : Proxy MPLS Echo Request Authors : George Swallow Vanson Lim Sam Aldrin Filename : draft-ietf-mpls-proxy-lsp-ping-02.txt Pages : 24 Date : 2014-07-03 Abstract: This document defines a means of remotely initiating Multiprotocol Label Switched Protocol Pings on Label Switched Paths. A MPLS proxy ping request is sent to any Label Switching Routers along a Label Switched Path. The primary motivations for this facility are first to limit the number of messages and related processing when using LSP Ping in large Point-to-Multipoint LSPs, and second to enable leaf to leaf/root tracing. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-proxy-lsp-ping/ There's also a htmlized version available at: http://tools.ietf.org/html/draft-ietf-mpls-proxy-lsp-ping-02 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-proxy-lsp-ping-02 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Thu Jul 3 12:31:27 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 64AB71B2B71 for ; Thu, 3 Jul 2014 12:31:23 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id HCzcsiofZxlu for ; Thu, 3 Jul 2014 12:31:20 -0700 (PDT) Received: from mail-pd0-x22b.google.com (mail-pd0-x22b.google.com [IPv6:2607:f8b0:400e:c02::22b]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id F10261B2B61 for ; Thu, 3 Jul 2014 12:31:19 -0700 (PDT) Received: by mail-pd0-f171.google.com with SMTP id fp1so708120pdb.2 for ; Thu, 03 Jul 2014 12:31:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=content-type:mime-version:subject:from:in-reply-to:date:cc :message-id:references:to; bh=G5EkQFfARqZPo/hcFbtgCz9745WgRkBNl+jPWFX5Wfc=; b=g57cDFnw7o6GQWHFKFJsNLIzUWkVLgFHZX5481256oe082NI9+mdcV6LKNTCfJi4Bf 0Ni7Tq9DUy2e2JSLhru7+xBixh1XbYATG1u53uTKXBuHcf8j9G4Dgp2TSEj8tlT+wwPo X8tlOVwwwWjM57fAIYqpFhhraA8DbTniDNvL6wYRZ2CkgByn1d8kolwU9eR154DhPai0 WUSa+vCPKo+CmWSM5+RbqYpEo1kxgtireTdFWJkNhZ4qQR+5Ld+F4m//GdwVw0EXHIur gaOwVIyL5TVzUfgjR0nmhssMSjHbzKM6jGDhTvLw5M9IEjQdHF8+mSc7JX/JtMcNfwfP tdjw== X-Received: by 10.70.118.99 with SMTP id kl3mr5827468pdb.110.1404415878689; Thu, 03 Jul 2014 12:31:18 -0700 (PDT) Received: from [192.168.1.8] (c-107-3-154-60.hsd1.ca.comcast.net. [107.3.154.60]) by mx.google.com with ESMTPSA id u8sm5846593pds.92.2014.07.03.12.31.16 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 03 Jul 2014 12:31:17 -0700 (PDT) Content-Type: multipart/alternative; boundary="Apple-Mail=_CDC22017-A46A-406F-8525-2F44DEE4434D" Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.2\)) From: Sam Aldrin In-Reply-To: <53B59F1F.3000706@cisco.com> Date: Thu, 3 Jul 2014 12:31:15 -0700 Message-Id: References: <52C795FE.7060801@pi.nu> <53B59F1F.3000706@cisco.com> To: Vanson Lim X-Mailer: Apple Mail (2.1878.2) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/vSBGEonqMH8CrdLSDAVzi6DzP2k Cc: "mpls@ietf.org" , "draft-ietf-mpls-proxy-lsp-ping@tools.ietf.org" , "mpls-chairs@tools.ietf.org" Subject: Re: [mpls] Working group last call on draft-ietf-mpls-proxy-lsp-ping X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Jul 2014 19:31:23 -0000 --Apple-Mail=_CDC22017-A46A-406F-8525-2F44DEE4434D Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 Hi Loa, We have posted a new version of the draft. It addressed comments raised by Mach and Qin. One pending item remaining is IANA assignments.=20 Kindly advise how to proceed in this matter and we could take care of = it. thanks -sam On Jul 3, 2014, at 11:21 AM, Vanson Lim wrote: > Just an update for everyone. Sam will be posting an update to the = draft today/tomorrow with the changes to address the comments below. = My annotated comments inline. Search for ###VLIM: >=20 > The only thing remaining is a future update with the IANA assignments. >=20 > Regards, >=20 > -Vanson >=20 >=20 >=20 > On 5/28/14, 9:04 PM, Sam Aldrin wrote: >> Hi Mach and Qin, >>=20 >> Please find response to comments embedded with ##RESP. >> Sorry it took a while to respond but here it is anyway. >> Let know if you have any further questions. We would like to make = edits, close all open items and submit a new version of the draft to = complete LC. >>=20 >>=20 >> Comments from Qin: >>=20 >> #1 >> Hi, authors: >> Have a quick look at this draft, It is not clear to me why proxy LSR = doesn't need to wait for >> The result of MPLS echo rely and then send MPLS proxy ping reply? >> I know the draft says the receivers process the MPLS echo request, = sending their >> MPLS echo replies directly back to the initiator, however why bypass = proxy LSR? >> What about MPLS echo request initiating by proxy LSR is lost? How = does the initiator >> know the lost of MPLS echo request or reply? >> What am I missing? >>=20 >> ##RESP: LSP ping is designed with initiator initiating the request = and maintaining the state for the same. All the transit or responding = router do not maintain any state. Requiring Proxy LSRs to manage = relaying the response would require it to maintain state for the entire = transaction, including requiring the a timeout to be supplied by the = initiator. This will require the change in architecture, which this = draft is definitely not intending to do. >>=20 >>=20 >> #2 >> Also it is not very clear to me how to use reply mode 5, although the = draft says >> " >> If the Reply Mode of the message header is 1 or is 5 and no errors or >> modifications have occurred no MPLS proxy ping reply is sent. >> " >> ##RESP: There is no mention of reply mode 5. Which document are you = referring to? The document refers only to mode 1, where, no reply SHOULD = be sent for that mode. >>=20 >> If the Reply Mode of the Proxy Request message header is "1 - do = not >> reply", no MPLS proxy ping reply is sent. Otherwise an MPLS proxy >> ping reply message or MPLS echo request should be sent as = described >> below. >>=20 >> #3 >> It looks to me if no MPLS proxy ping rely needs to be sent, why = define reply mode 5? >> ###RESP: No mention of reply mode 5. If you are referring to reply = mode 1, the question is for RFC4379. All I can say is, it is there to = check unidirectional errors. >>=20 >> #4 >> Also there are a lot of nits and typos that need to be fixed, >> s/ limiting the the number/ limiting the number >> s/ motivaton/ motivation >> s/ and and all autho-rization/ and all authorization >> s/ Pprocedures/ Procedures >> s/ sub-objexts/ sub-objects >> s/ modificatons /modifications >> s/ decribed/ described >> s/ assigments/assignments >>=20 >> ##RESP: Ack >=20 > ###VLIM: Issue resolved. >>=20 >> #5 >> In section 5.2, there is no definition of reply to address field, I = think it should be defined as initiator address >>=20 >> ##RESP: This is the address the echo reply should be sent to, most = likely the initiator, but could be something else. We will add text for = the field. >>=20 >> #6 >> For Downstream Mapping objects, it is better to add a reference to = RFC4379. >> The references [McstPing] [mLDP] are now outdated and need to be = updated to the corresponding RFC. >> ##RESP - Ack. Will add references. >=20 > ###VLIM: Changed all references of mDP to =93Label Distribution = Protocol Extensions for Point-to-Multipoint and Multipoint-to-Multipoint = Label Switched Paths [RFC 6388] >>=20 >> Regards! >> -Qin >>=20 >>=20 >>=20 >> =3D=3D=3D=3D=3D=3D >>=20 >>=20 >> 2) =46rom Mach Chen >>=20 >> Hi Authors, >>=20 >> I just reviewed the draft, here are my comments, hope this help. >>=20 >> General comments: >> It would be better if you could adjust the structure of the draft to = put Section 3 behind Section 5. Then the reader will not need to check = definitions of the Messages and TLVs in the back and then return back = keep reading the document. >>=20 >> ##RESP - I feel it is good to have description before the actual = format definition. Either case, one has to go back and forth to = understand completely. Is there any hard preference to your suggestion? >>=20 >> Specific comments: >>=20 >>=20 >> 1. Section 2 >>=20 >> If the source address of the MPLS echo request is not to be >> set to the Proxy Request source address, the initiator must = include a >> Reply-to Address TLV containing the source address to use in the = MPLS >> echo request. >>=20 >> Why we need the Reply-to Address TLV? Which address will be included = in the Reply-to Address TLV? If the address is neither the initiror or = the proxy LSR, this may import some security isses? >>=20 >> ##RESP: We added this TLV for a reason, which at that time, was = needed. =46rom what we see now, the requestor IP will be used. Hence, = this TLV will be removed. >>=20 >> 2. Section 3.1 >>=20 >> 2.1 >> "The message MUST contain a Target FEC Stack that describes the FEC >> being tested. The topmost FEC in the target FEC stack is used at = the >> Proxy LSR to lookup the MPLS label stack that will be used to >> encapsulate the MPLS echo request packet. >> " >> Seems that it only needs to carry the topmost FEC, and no need to = carry other FECs. And even if carried, it does not make sense. Right? >>=20 >>=20 >> ##RESP: reused existing target fec stack, don=92t want to restrict = to topmost FEC in case there are future uses. >>=20 >>=20 >> 2.2 >> s /MPLS Proxy Ping message/MPLS proxy ping request message, need to = look through the document to make them consistent. >> ##RESP - Ack. >=20 > ###VLIM: One occurrence found in section 3.1, second paragraph, Also = went through the entire document and changed all occurrences of Proxy = Request/Reply, MPLS Proxy Ping/Proxy Reply, etc to =93MPLS proxy ping = request=94 and =93MPLS proxy ping reply=94. >=20 >=20 >>=20 >>=20 >> 3. Section 3.1 the sixth paragraph: >> "The Proxy Request reply mode is set with one of the reply modes >> defined in [RFC4379] as appropriate." >>=20 >> Is the reply mode here referred to the reply mode of the MPLS proxy = request, or the reply mode of the Proxy Echo Parameter. I think it's the = former, right? >>=20 >> And section 5.1 said: >> "The MPLS Proxy Echo request echo header's Reply Mode should be set = to "Reply with Proxy Info"." >>=20 >> Seems they are self-contradictory here. >>=20 >> ##RESP - Not really. Sec 3 is describing the reply mode should use = one of the modes defined in RFC4379. While Sec 5.1 is talking about the = request to query info from proxy LSR. >>=20 >> 4. Section 3.1 the last second paragraph: >>=20 >> s /DDSMAP)/(DDSMAP) >>=20 >> ##RESP - Ack >=20 > ###VLIM: Found, changed =93DDSMAP)=94 -> =93(DDMAP)=94 >=20 >>=20 >> 5. Section 3.2, in the middle of the fourth paragraph. >>=20 >> "Other filters on FECs or MPLS echo request contents MAY be applied." >>=20 >>=20 >> For a Proxy LSR, it will not receive any MPLS echo request, should it = be the MPLS proxy ping request here? >>=20 >>=20 >> ##RESP: The sentence is talking about proxy LSR sending MPLS echo = request, not receiving. >>=20 >> 6. Section 3.2.1 >>=20 >> 6.1 In the middle of third paragraph: >>=20 >> "If the Proxy LSR is a Budnode but not >> requested to return a Proxy reply, the Proxy LSR should send = packets >> to the downstream neighbors (no Echo reply is sent to the Proxy >> Initiator to indicate that the Proxy LSR is an egress). >> " >>=20 >> What packets will be sent to the downstream neighbors? >>=20 >> ##RESP: =93MPLS Echo Request=94 >=20 > ###VLIM: Updated from =93send packets=94 to =93send MPLS Echo Request = packets=94 > ###VLIM: Update all occurrences of Proxy Reply, to MPLS proxy ping = reply, > ###VLIM: Update all occurrences of "MPLS echo request", to "MPLS Echo = Request" >>=20 >> 6.2 >> If there is no DS/DDMAPs returned, how does the initiator determine = the proxy LSR is budnode or egress? >>=20 >> ##RESP: wanted to have the same behavior when injecting a LSP Ping at = an egress. When we ping from a bud node, if we don=92t typically get = an echo reply from ourselves, so we wanted to provide the ability for = the Proxy requester to decide whether they want a proxy reply to by send = back in response to a proxy request. is_egress return code used to = indicate proxy lsr also an egress. >>=20 >>=20 >>=20 >> 6.3 Last paragraph, last sentence >>=20 >> s / M2MP leaf /MP2MP leaf >>=20 >> ##RESP - ack >=20 > ###VLIM: Updated >>=20 >> 7. Section 3.2.4.1 >>=20 >> 7.1 What's is "base MPLS echo request"? I suggest to remove the = "base" here. >>=20 >> ##RESP: Seems fine to remove. > ###VLIM: 4 occurrences found, =93base=94 removed. >=20 >=20 >>=20 >> 7.2 >>=20 >> "If the Explicit Differentiated Services Code Point (DSCP) flag is >> set, the Requested DSCP byte is examined. If the setting is >> permitted then the DSCP byte of the IP header of the MPLS Echo >> Request message is set to that value. If the Proxy LSR does not >> permit explicit control for the DSCP byte, the MPLS Proxy Echo >> Parameters with the Explicit DSCP flag cleared MUST be included in >> any MPLS proxy ping reply message to indicate why an Echo Request = was >> not sent. The return code MUST be set to , "Proxy ping >> parameters need to be modified". If the Explicit DSCP flag is not >> set, the Proxy LSR should set the Echo Request DSCP settings to = the >> value normally used to source LSP ping packets." >>=20 >> I am not sure whether this is the right choice to let the Proxy LSR = to control whether the DSCP is permitted or not. IMO, this permission = should be controlled by the Receiver or Responder. >>=20 >> ##RESP: This section is referring to the DSCP settings in the MPLS = echo request label stack and ip header not the reply dscp. When = initiating LSP pings, the sender of the lsp ping controls this setting, = so it was felt that it be valuable to allow the sender of the proxy = request to control this subject to restrictions imposed at the Proxy = LSR. >>=20 >>=20 >>=20 >> 8. Section 3.2.4.2 >>=20 >> "If any additional labels are pushed >> onto the stack, their TTLs are set to 255." >>=20 >> what's this case? Can you clarify more about the case? >>=20 >> ##RESP: Don=92t want to requester have have control of the ttls for = tunnels not relevant to the FEC being tested. > ###VLIM: Sam worked with Mach to address his concern with wording in = this section. >=20 >=20 >>=20 >> 9. Section 4.2 >> " >> The MPLS proxy ping request message MAY contain the following >> TLVs: >> " >> You may also need to contain the Type 21 and 22 TLV. >>=20 >> ##RESP: okay, we=92ll add these tlv=92s to the list of tlv=92s to be = included in the proxy request for including into the echo requests. >=20 > ###VLIM: Added > 21 Reply Path [RFC7110] > 22 Reply TC [RFC7110] >>=20 >> 10.Section 5.1 >>=20 >> s /MPLS Proxy Echo Request message /MPLS proxy ping request message, = same as the above comment 2.2 >> ##RESP - ack >=20 > ###VLIM: Changed. >=20 >>=20 >>=20 >> Best regards, >> Mach >>=20 >> Cheers >> -sam >>=20 >>=20 >>>> -----Original Message----- >>>> From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Loa = Andersson >>>> Sent: Saturday, January 04, 2014 1:03 PM >>>> To: mpls@ietf.org >>>> Cc: mpls-chairs@tools.ietf.org; = draft-ietf-mpls-proxy-lsp-ping@tools.ietf.org >>>> Subject: [mpls] Working group last call on = draft-ietf-mpls-proxy-lsp-ping >>>>=20 >>>> Working Group, >>>>=20 >>>> this is to start a two week working group last call on >>>> draft-ietf-mpls-proxy-lsp-ping-01.txt >>>>=20 >>>> Please send your comments to working group mailing lists = (mpls@ietf.org). >>>>=20 >>>> We will do an IPR poll on this document in parallel thee wglc. >>>>=20 >>>> There are three IPRs disclosures that relates to this document. >>>>=20 >>>> The working group last call will end Friday January 20, 2914. >>>>=20 >>>> /Loa >>>> mpls wg co-chair >>>>=20 >>>> -- >>>>=20 >>>>=20 >>>> Loa Andersson email: loa@mail01.huawei.com >>>> Senior MPLS Expert loa@pi.nu >>>> Huawei Technologies (consultant) phone: +46 739 81 21 64 >>>> _______________________________________________ >>>> mpls mailing list >>>> mpls@ietf.org >>>> https://www.ietf.org/mailman/listinfo/mpls >> . --Apple-Mail=_CDC22017-A46A-406F-8525-2F44DEE4434D Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252 Hi = Loa,

We have posted a new version of the = draft.
It addressed comments raised by Mach and = Qin.

One pending item remaining is IANA = assignments. 
Kindly advise how to proceed in this matter = and we could take care of = it.

thanks
-sam
On Jul = 3, 2014, at 11:21 AM, Vanson Lim <vlim@cisco.com> wrote:

Just an update for everyone.  Sam = will be posting an update to the draft today/tomorrow with the changes = to address the comments below.   My annotated comments inline. = Search for ###VLIM:

The only thing remaining is a future update = with the IANA = assignments.

Regards,

-Vanson



On 5/28/14, = 9:04 PM, Sam Aldrin wrote:
Hi Mach and = Qin,

Please find response to comments embedded with = ##RESP.
Sorry it took a while to respond but here it is = anyway.
Let know if you have any further questions. We would like to = make edits, close all open items and submit a new version of the draft = to complete LC.


Comments from Qin:

#1
Hi, = authors:
Have a quick look at this draft, It is not clear to me why = proxy LSR doesn't need to wait for
The result of MPLS echo rely and = then send MPLS proxy ping reply?
I know the draft says the receivers = process the MPLS echo request, sending their
MPLS echo replies = directly back to the initiator, however why bypass proxy LSR?
What = about MPLS echo request initiating by proxy LSR is lost? How does the = initiator
know the lost of MPLS echo request or reply?
What am I = missing?

##RESP:   LSP ping is designed with initiator = initiating the request and maintaining the state for the same. All the = transit or responding router do not maintain any state. Requiring Proxy = LSRs to manage relaying the response would require it to maintain state = for the entire transaction, including requiring the a timeout to be = supplied by the initiator. This will require the change in architecture, = which this draft is definitely not intending to = do.


#2
Also it is not very clear to me how to use reply = mode 5, although the draft says
"
If the Reply Mode of the message = header is 1 or is 5 and no errors or
modifications have occurred no = MPLS proxy ping reply is sent.
"
##RESP:  There is no mention = of reply mode 5. Which document are you referring to? The document = refers only to mode 1, where, no reply SHOULD be sent for that = mode.

   If the Reply Mode of the Proxy Request = message header is "1 - do not
   reply", no MPLS proxy = ping reply is sent.  Otherwise an MPLS = proxy
   ping reply message or MPLS echo request = should be sent as described
   below.

#3
It = looks to me if no MPLS proxy ping rely needs to be sent, why define = reply mode 5?
###RESP:  No mention of reply mode 5. If you are = referring to reply mode 1, the question is for RFC4379. All I can say = is, it is there to check unidirectional errors.

#4
Also there = are a lot of nits and typos that need to be fixed,
s/ limiting the = the number/ limiting the number
s/ motivaton/ motivation
s/ and = and all autho-rization/ and all authorization
s/ Pprocedures/ = Procedures
s/ sub-objexts/ sub-objects
s/ modificatons = /modifications
s/ decribed/ described
s/ = assigments/assignments

##RESP: Ack

###VLIM: =  Issue resolved.

#5
In section = 5.2, there is no definition of reply to address field, I think it should = be defined as initiator address

##RESP:  This is the address = the echo reply should be sent to,  most likely the initiator, but = could be something else. We will add text for the = field.

#6
For Downstream Mapping objects, it is better to add = a reference to RFC4379.
The references [McstPing] [mLDP] are now = outdated and need to be updated to the corresponding RFC.
##RESP - = Ack. Will add references.

###VLIM: Changed all = references of mDP to =93Label Distribution Protocol Extensions for = Point-to-Multipoint and Multipoint-to-Multipoint Label Switched Paths = [RFC 6388]

Regards!
-Qin



=3D=3D=3D=3D=3D=3D

2) =46rom Mach Chen

Hi Authors,

I just reviewed the = draft, here are my comments, hope this help.

General = comments:
It would be better if you could adjust the structure of the = draft to put Section 3 behind Section 5. Then the reader will not need = to check definitions of the Messages and TLVs in the back and then = return back keep reading the document.

##RESP - I feel it is good = to have description before the actual format definition. Either case, = one has to go back and forth to understand completely. Is there any hard = preference to your suggestion?

Specific comments:


1. = Section 2

If the source address of the MPLS echo request is not = to be
   set to the Proxy Request source address, the = initiator must include a
   Reply-to Address TLV = containing the source address to use in the = MPLS
   echo request.

Why we need the Reply-to = Address TLV? Which address will be included in the Reply-to Address TLV? = If the address is neither the initiror or the proxy LSR, this may import = some security isses?

##RESP: We added this TLV for a reason, = which at that time, was needed. =46rom what we see now, the requestor IP = will be used. Hence, this TLV will be removed.

2. Section = 3.1

2.1
"The message MUST contain a Target FEC Stack that = describes the FEC
   being tested.  The topmost = FEC in the target FEC stack is used at the
   Proxy = LSR to lookup the MPLS label stack that will be used = to
   encapsulate the MPLS echo request = packet.
"
Seems that it only needs to carry the topmost FEC, and = no need to carry other FECs. And even if carried, it does not make = sense. Right?


##RESP:  reused existing target fec stack, =  don=92t want to restrict to topmost FEC in case there are future = uses.


2.2
s /MPLS Proxy Ping message/MPLS proxy ping = request message, need to look through the document to make them = consistent.
##RESP - Ack.

###VLIM:  One = occurrence found in section 3.1, second paragraph, Also went through the = entire document and changed all occurrences of Proxy Request/Reply, =  MPLS Proxy Ping/Proxy Reply, etc to =93MPLS proxy ping request=94 = and =93MPLS proxy ping reply=94.




3. Section 3.1 the sixth paragraph:
"The Proxy = Request reply mode is set with one of the reply = modes
   defined in [RFC4379] as = appropriate."

Is the reply mode here referred to the reply mode = of the MPLS proxy request, or the reply mode of the Proxy Echo = Parameter. I think it's the former, right?

And section 5.1 = said:
"The MPLS Proxy Echo request echo header's Reply Mode should be = set to "Reply with Proxy Info"."

Seems they are = self-contradictory here.

##RESP - Not really. Sec 3 is describing = the reply mode should use one of the modes defined in RFC4379. While Sec = 5.1 is talking about the request to query info from proxy LSR.

4. = Section 3.1 the last second paragraph:

s = /DDSMAP)/(DDSMAP)

##RESP - Ack

###VLIM: = Found, changed =93DDSMAP)=94 -> =93(DDMAP)=94


5. Section 3.2, in the middle of the fourth = paragraph.

"Other filters on FECs or MPLS echo request contents = MAY be applied."


For a Proxy LSR, it will not receive any = MPLS echo request, should it be the MPLS proxy ping request = here?


##RESP:  The sentence is talking about proxy LSR = sending MPLS echo request, not receiving.

6. Section = 3.2.1

6.1 In the middle of third paragraph:

"If the Proxy = LSR is a Budnode but not
   requested to return a = Proxy reply, the Proxy LSR should send packets
   to = the downstream neighbors (no Echo reply is sent to the = Proxy
   Initiator to indicate that the Proxy LSR is = an egress).
"

What packets will be sent to the downstream = neighbors?

##RESP:  =93MPLS Echo = Request=94

###VLIM:  Updated from =93send = packets=94 to =93send MPLS Echo Request packets=94
###VLIM: =  Update all occurrences of Proxy Reply, to MPLS proxy ping = reply,
###VLIM:  Update all occurrences of "MPLS echo request", = to "MPLS Echo Request"

6.2
If there = is no DS/DDMAPs returned, how does the initiator determine the proxy LSR = is budnode or egress?

##RESP: wanted to have the same behavior = when injecting a LSP Ping at an egress.  When we ping from a bud = node,  if we  don=92t typically get an echo reply from = ourselves,  so we wanted to provide the ability for the Proxy = requester to decide whether they want a proxy reply to by send back in = response to a proxy request.  is_egress return code used to = indicate proxy lsr also an egress.



6.3 Last paragraph, = last sentence

s / M2MP leaf /MP2MP leaf

##RESP - = ack

###VLIM:  Updated

7. Section 3.2.4.1

7.1 What's is "base MPLS = echo request"? I suggest to remove the "base" here.

##RESP: Seems = fine to remove.
###VLIM:  4 occurrences found, =  =93base=94 removed.



7.2

"If the Explicit Differentiated Services = Code Point (DSCP) flag is
   set, the Requested DSCP = byte is examined.  If the setting is
   permitted = then the DSCP byte of the IP header of the MPLS = Echo
   Request message is set to that value.  If = the Proxy LSR does not
   permit explicit control for = the DSCP byte, the MPLS Proxy Echo
   Parameters with = the Explicit DSCP flag cleared MUST be included = in
   any MPLS proxy ping reply message to indicate = why an Echo Request was
   not sent.  The return = code MUST be set to <tba>, "Proxy = ping
   parameters need to be modified".  If the = Explicit DSCP flag is not
   set, the Proxy LSR should = set the Echo Request DSCP settings to the
   value = normally used to source LSP ping packets."

I am not sure whether = this is the right choice to let the Proxy LSR to control whether the = DSCP is permitted or not. IMO, this permission should be controlled by = the Receiver or Responder.

##RESP:  This section is = referring to the DSCP settings in the MPLS echo request label stack and = ip header not the reply dscp.   When initiating LSP pings, the = sender of the lsp ping controls this setting, so it was felt that it be = valuable to allow the sender of the proxy request to control this = subject to restrictions imposed at the Proxy LSR.



8. =  Section 3.2.4.2

"If any additional labels are = pushed
   onto the stack, their TTLs are set to = 255."

what's this case? Can you clarify more about the = case?

##RESP:  Don=92t want to requester have have control = of the ttls for tunnels not relevant to the FEC being = tested.
###VLIM:  Sam worked with Mach to address = his concern with wording in this section.



9. Section 4.2
"
 The MPLS proxy ping = request message MAY contain the = following
   TLVs:
"
You may also need to = contain the Type 21 and 22 TLV.

##RESP:  okay, we=92ll add = these tlv=92s to the list of tlv=92s to be included in the proxy request = for including into the echo requests.

###VLIM: = Added
21    Reply Path =    [RFC7110]
22    Reply TC =    [RFC7110]

10.Section = 5.1

s /MPLS Proxy Echo Request message /MPLS proxy ping request = message, same as the above comment 2.2
##RESP - = ack

###VLIM:   Changed.



Best = regards,
Mach

Cheers
-sam


-----Original = Message-----
From: mpls [mailto:mpls-bounces@ietf.org] = On Behalf Of Loa Andersson
Sent: Saturday, January 04, 2014 1:03 = PM
To: mpls@ietf.org
Cc: mpls-chairs@tools.ietf.org;= draft-ietf-m= pls-proxy-lsp-ping@tools.ietf.org
Subject: [mpls] Working group = last call on draft-ietf-mpls-proxy-lsp-ping

Working = Group,

this is to start a two week working group last call = on
draft-ietf-mpls-proxy-lsp-ping-01.txt

Please send your = comments to working group mailing lists (mpls@ietf.org).

We will do an = IPR poll on this document in parallel thee wglc.

There are three = IPRs disclosures that relates to this document.

The working group = last call will end Friday January 20, 2914.

/Loa
mpls wg = co-chair

--


Loa Andersson =             &n= bsp;          email: = loa@mail01.huawei.com
Senior = MPLS Expert =             &n= bsp;           &nbs= p;loa@pi.nu
Huawei Technologies = (consultant)     phone: +46 739 81 21 = 64
_______________________________________________
mpls mailing = list
mpls@ietf.org
https://www.ietf.org/ma= ilman/listinfo/mpls
.

= --Apple-Mail=_CDC22017-A46A-406F-8525-2F44DEE4434D-- From nobody Thu Jul 3 15:48:05 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3D9371A0496 for ; Thu, 3 Jul 2014 15:48:04 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -6.899 X-Spam-Level: X-Spam-Status: No, score=-6.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_HI=-5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 9eUy6X8cotbB for ; Thu, 3 Jul 2014 15:48:02 -0700 (PDT) Received: from ihemail1.lucent.com (ihemail1.lucent.com [135.245.0.33]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id DCA721A045D for ; Thu, 3 Jul 2014 15:48:01 -0700 (PDT) Received: from us70tusmtp2.zam.alcatel-lucent.com (h135-5-2-64.lucent.com [135.5.2.64]) by ihemail1.lucent.com (8.13.8/IER-o) with ESMTP id s63MlwcL010048 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Thu, 3 Jul 2014 17:47:59 -0500 (CDT) Received: from US70UWXCHHUB02.zam.alcatel-lucent.com (us70uwxchhub02.zam.alcatel-lucent.com [135.5.2.49]) by us70tusmtp2.zam.alcatel-lucent.com (GMO) with ESMTP id s63Mlwn5018720 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Thu, 3 Jul 2014 18:47:58 -0400 Received: from US70UWXCHMBA01.zam.alcatel-lucent.com ([169.254.7.233]) by US70UWXCHHUB02.zam.alcatel-lucent.com ([135.5.2.49]) with mapi id 14.02.0247.003; Thu, 3 Jul 2014 18:47:58 -0400 From: "Aissaoui, Mustapha (Mustapha)" To: "mpls@ietf.org" Thread-Topic: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 Thread-Index: Ac+Kbg0JI45wiuB+QkmRpWOTfjvnXAAAEROQAn/CxAA= Date: Thu, 3 Jul 2014 22:47:57 +0000 Message-ID: <4A79394211F1AF4EB57D998426C9340D946C86F6@US70UWXCHMBA01.zam.alcatel-lucent.com> References: <4A79394211F1AF4EB57D998426C9340D946A9035@US70UWXCHMBA01.zam.alcatel-lucent.com> In-Reply-To: <4A79394211F1AF4EB57D998426C9340D946A9035@US70UWXCHMBA01.zam.alcatel-lucent.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [135.5.27.17] Content-Type: multipart/alternative; boundary="_000_4A79394211F1AF4EB57D998426C9340D946C86F6US70UWXCHMBA01z_" MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/S6fnJZuyp0bXJ9bCOAmIZXM05pM Cc: "Jeffrey \(Zhaohui\) Zhang" , Ross Callon , "draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org" , "mpls-chairs@tools.ietf.org" , "jeremy.whittaker@verizon.com" Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Jul 2014 22:48:04 -0000 --_000_4A79394211F1AF4EB57D998426C9340D946C86F6US70UWXCHMBA01z_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Dear all, I was asked to review this draft and I think it describes valid issues to b= e resolved. I however have a couple of comments about the way the authors w= ent about to address them. 1. Relation to RFC 7110 - Return Path Specified Label Switched Path (LSP= ) Ping. Section 4.1 argues the reason why a separate reply mode is needed is for wa= nting to omit the Reply Path TLV defined in RFC 7110 when the sender of the= echo request just wanted to use the return path of the tested LSP. I do no= t see this as a strong justification. In many cases, the LSP is unidirectio= nal or the responder node is a transit LSR and may not be able to inject th= e reply in the reverse direction of that LSP. In that case, I can see that = providing a specific return LSP which is different than the tested LSP is r= equired and the Reply Path TLV is needed. Assuming this is still an important issue for the authors, I would suggest = to relax the rule in RFC 7110 such that if the echo request includes reply = mode 5 "Reply via Specified Path" and the Reply Path TLV is not included, t= he responder node will interpret this as an implicit request to reply via t= he reverse direction of the tested LSP. 2. Reply Mode Order TLV I am not convinced of the need for this TLV. There is not much reply modes = which are usable today together. Only reply mode 2 can be concurrently used= with reply mode 5 in RFC 7110 or reply mode 4. Reply mode 3 is not very po= pular as far as I know. Also, most applications would reply with mode 2 if = the requested mode is not available. So, I can't see how this new TLV will = be useful in practice. Regards, Mustapha. --_000_4A79394211F1AF4EB57D998426C9340D946C86F6US70UWXCHMBA01z_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Dear all,

I was asked to review this draft and I th= ink it describes valid issues to be resolved. I however have a couple of co= mments about the way the authors went about to address them.

 

1.<= span style=3D"font:7.0pt "Times New Roman"">    Relation to RFC 7110 - Return Pat= h Specified Label Switched Path (LSP) Ping.

Section 4.1 argues the reason why = a separate reply mode is needed is for wanting to omit the Reply Path TLV d= efined in RFC 7110 when the sender of the echo request just wanted to use the return path of the tested LSP. I do not see this as a st= rong justification. In many cases, the LSP is unidirectional or the respond= er node is a transit LSR and may not be able to inject the reply in the rev= erse direction of that LSP. In that case, I can see that providing a specific return LSP which is different th= an the tested LSP is required and the Reply Path TLV is needed.<= /span>

Assuming this is still an importan= t issue for the authors, I would suggest to relax the rule in RFC 7110 such= that if the echo request includes reply mode 5 “Reply via Specified Path” and the Reply Path TLV is not included, the responde= r node will interpret this as an implicit request to reply via the reverse = direction of the tested LSP.

 

2.<= span style=3D"font:7.0pt "Times New Roman"">    Reply Mode Order TLV

I am not convinced of the need for= this TLV. There is not much reply modes which are usable today together. O= nly reply mode 2 can be concurrently used with reply mode 5 in RFC 7110 or reply mode 4. Reply mode 3 is not very popular as far as = I know. Also, most applications would reply with mode 2 if the requested mo= de is not available. So, I can’t see how this new TLV will be useful = in practice.

 

Regards,

Mustapha.

--_000_4A79394211F1AF4EB57D998426C9340D946C86F6US70UWXCHMBA01z_-- From nobody Thu Jul 3 16:16:25 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6B3E31B2ABA for ; Thu, 3 Jul 2014 16:16:23 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id kWZJLlfQWab5 for ; Thu, 3 Jul 2014 16:16:20 -0700 (PDT) Received: from mail-pa0-x22f.google.com (mail-pa0-x22f.google.com [IPv6:2607:f8b0:400e:c03::22f]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2AF641B2AAC for ; Thu, 3 Jul 2014 16:16:20 -0700 (PDT) Received: by mail-pa0-f47.google.com with SMTP id kq14so961022pab.34 for ; Thu, 03 Jul 2014 16:16:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=content-type:mime-version:subject:from:in-reply-to:date:cc :message-id:references:to; bh=zT9Ert3DXt+JyM/GU8owuVggBl+z6cFdEGGiWcCO6V8=; b=b9XvjD65bhjJSCA0qzMukkjB/mngU4zkoNLL00akzUapDSyBp/zhP4I9U0HFT2D9Z7 7phgTaCO+AliZauCHZbd8vtVhf4TSUo9KtgMYCS/n5O+EnGXf6nKoeJzsP+wsJoK8zi1 NkCsy1RWbl/iNWEdnvPl6K88PbZCJjfnKPgJO9PMPFIMuCbcIOhxjKvq9K5Y0thRjx4Q OD0fKhZ8iQ5X5T+mwSggCgFi2J7jfYjf+3JHu+8saMWnw9oQao9c4HaOnuC3fNznQ/1d A1TPsF/DfdywXAvmBcc2AJbvxuCzLXW1q/xJo3qoopY/olqGX/1OwkFK5Cx5jB2vYYgs aKWQ== X-Received: by 10.66.132.36 with SMTP id or4mr7522322pab.42.1404429379875; Thu, 03 Jul 2014 16:16:19 -0700 (PDT) Received: from [192.168.1.8] (c-107-3-154-60.hsd1.ca.comcast.net. [107.3.154.60]) by mx.google.com with ESMTPSA id w16sm6297644pdl.36.2014.07.03.16.16.17 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 03 Jul 2014 16:16:18 -0700 (PDT) Content-Type: multipart/alternative; boundary="Apple-Mail=_F446718F-1F29-456C-B3D4-58739C0962CE" Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.2\)) From: Sam Aldrin In-Reply-To: <4A79394211F1AF4EB57D998426C9340D946C86F6@US70UWXCHMBA01.zam.alcatel-lucent.com> Date: Thu, 3 Jul 2014 16:16:16 -0700 Message-Id: <9EB527EE-2C56-405D-9340-88A3184A48CA@gmail.com> References: <4A79394211F1AF4EB57D998426C9340D946A9035@US70UWXCHMBA01.zam.alcatel-lucent.com> <4A79394211F1AF4EB57D998426C9340D946C86F6@US70UWXCHMBA01.zam.alcatel-lucent.com> To: "Aissaoui, Mustapha (Mustapha)" X-Mailer: Apple Mail (2.1878.2) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/GEXwyFl-nZr70dscNkvgrcfRUI4 Cc: "mpls@ietf.org" , "Jeffrey \(Zhaohui\) Zhang" , "draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org" , Ross Callon , "mpls-chairs@tools.ietf.org" , "jeremy.whittaker@verizon.com" Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Jul 2014 23:16:23 -0000 --Apple-Mail=_F446718F-1F29-456C-B3D4-58739C0962CE Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 Authors, I too raised the below points highlighted by Mustapha, earlier. In = addition I have a more high-level question. In the Introduction it says=20 "However, it is becoming increasingly difficult for an initiator to select a valid return path to encode in the MPLS LSP echo request packets. If the initiator does not select a valid return path, the MPLS LSP echo reply will not get back to the initiator. This results in a false failure of MPLS LSP Ping and Traceroute operation. In an effort to minimize such false failures, different implementations have chosen different default return path encoding for different LSP types and LSP operations. The problem with implementations having different default return path encoding is that the MPLS echo reply will not work in many cases, and the default value may not be the preferred choice by the operators. " The problems I have is regarding the need for this ID are 1. Can we solve the problem without the need for this ID/solution?=20 Answer is yes, albeit it takes one or more requests. If you say, it is = solving a problem which was couldn=92t be solved earlier, I would like = to see. 2. The proposal still cannot identify the problem even with multiple = reply modes. If reply cannot be received, adding more reply types may = not solve the issue. 3. This proposed solution works only if the problem is on the replying = node. But if the problem is on the transit node of the reply path, this = solution will not work either. 4. As I mentioned earlier, for this new proposal to work effectively, = the responding device has to support this new TLV. Which means, whole of = the network has to support at one point of time of the other. 5. With the proposed solution, to determine the problem, one also needs = to read the =91reply mode=92 used by the replying device. IOW, return = code + reply mode used will actually define the behavior. This changes = the definition of RFC4379.=20 6. Specific to the text above, I do not agree that the problem is due to = implementation. It is the user choice which ever reply mode he/she wants = to use. If using CLI, could chose different reply mode. If it is = application, he/she could select it there.=20 The point is, why to introduce this optimization solution, where one = could solve the problem without any of this new upgrade? Alternatively, for ex: If the reply was being received with reply mode = =915, but now I don=92t receive it now, send a new request with reply = mode 1.=20 This is more simple than the proposed solution without needing any = change. I=92d be open to hearing the strong reason, this ID is solving, which = couldn=92t be solved with RFC4379. cheers -sam On Jul 3, 2014, at 3:47 PM, Aissaoui, Mustapha (Mustapha) = wrote: > Dear all, > I was asked to review this draft and I think it describes valid issues = to be resolved. I however have a couple of comments about the way the = authors went about to address them. > =20 > 1. Relation to RFC 7110 - Return Path Specified Label Switched Path = (LSP) Ping. > Section 4.1 argues the reason why a separate reply mode is needed is = for wanting to omit the Reply Path TLV defined in RFC 7110 when the = sender of the echo request just wanted to use the return path of the = tested LSP. I do not see this as a strong justification. In many cases, = the LSP is unidirectional or the responder node is a transit LSR and may = not be able to inject the reply in the reverse direction of that LSP. In = that case, I can see that providing a specific return LSP which is = different than the tested LSP is required and the Reply Path TLV is = needed. > Assuming this is still an important issue for the authors, I would = suggest to relax the rule in RFC 7110 such that if the echo request = includes reply mode 5 =93Reply via Specified Path=94 and the Reply Path = TLV is not included, the responder node will interpret this as an = implicit request to reply via the reverse direction of the tested LSP. > =20 > 2. Reply Mode Order TLV > I am not convinced of the need for this TLV. There is not much reply = modes which are usable today together. Only reply mode 2 can be = concurrently used with reply mode 5 in RFC 7110 or reply mode 4. Reply = mode 3 is not very popular as far as I know. Also, most applications = would reply with mode 2 if the requested mode is not available. So, I = can=92t see how this new TLV will be useful in practice. > =20 > Regards, > Mustapha. > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls --Apple-Mail=_F446718F-1F29-456C-B3D4-58739C0962CE Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252 Authors,

I too raised the below = points highlighted by Mustapha, earlier. In addition I have a more = high-level question.

In the Introduction it = says 
"However, it is becoming increasingly difficult for an initiator = to
   select a valid return path to =
encode in the MPLS LSP echo request
   packets.  If the initiator does not select a valid return path, the
   MPLS LSP echo reply will not get back to the initiator.  This results
   in a false failure of MPLS LSP Ping and Traceroute operation.  In an
   effort to minimize such false failures, different implementations
   have chosen different default return path encoding for different LSP
   types and LSP operations.  The problem with implementations having
   different default return path encoding is that the MPLS echo reply
   will not work in many cases, and the default value may not be the
   preferred choice by the =
operators.
"

The problems I have is = regarding the need for this ID are
1. Can we solve the problem = without the need for this ID/solution? 
Answer is yes, = albeit it takes one or more requests. If you say, it is solving a = problem which was couldn=92t be solved earlier, I would like to = see.
2. The proposal still cannot identify the problem even = with multiple reply modes. If reply cannot be received, adding more = reply types may not solve the issue.
3. This proposed solution = works only if the problem is on the replying node. But if the problem is = on the transit node of the reply path, this solution will not work = either.
4. As I mentioned earlier, for this new proposal to = work effectively, the responding device has to support this new TLV. = Which means, whole of the network has to support at one point of time of = the other.
5. With the proposed solution, to determine the = problem, one also needs to read the =91reply mode=92 used by the = replying device. IOW, return code + reply mode used will actually define = the behavior. This changes the definition of RFC4379. 
6. = Specific to the text above, I do not agree that the problem is due to = implementation. It is the user choice which ever reply mode he/she wants = to use. If using CLI, could chose different reply mode. If it is = application, he/she could select it = there. 

The point is, why to introduce = this optimization solution, where one could solve the problem without = any of this new upgrade?
Alternatively, for ex: If the reply = was being received with reply mode =915, but now I don=92t receive it = now, send a new request with reply mode 1. 
This is more = simple than the proposed solution without needing any = change.
I=92d be open to hearing the strong reason, this ID is = solving, which couldn=92t be solved with = RFC4379.

cheers
-sam


On Jul 3, 2014, at 3:47 PM, Aissaoui, Mustapha = (Mustapha) <mustapha.aissaoui@alc= atel-lucent.com> wrote:

Dear = all,
I was asked = to review this draft and I think it describes valid issues to be = resolved. I however have a couple of comments about the way the authors = went about to address them.
 
1.    Relation to = RFC 7110 - Return Path Specified Label Switched Path (LSP) = Ping.
Section 4.1 = argues the reason why a separate reply mode is needed is for wanting to = omit the Reply Path TLV defined in RFC 7110 when the sender of the echo = request just wanted to use the return path of the tested LSP. I do not = see this as a strong justification. In many cases, the LSP is = unidirectional or the responder node is a transit LSR and may not be = able to inject the reply in the reverse direction of that LSP. In that = case, I can see that providing a specific return LSP which is different = than the tested LSP is required and the Reply Path TLV is = needed.
Assuming this is still an important issue for the authors, = I would suggest to relax the rule in RFC 7110 such that if the echo = request includes reply mode 5 =93Reply via Specified Path=94 and the = Reply Path TLV is not included, the responder node will interpret this = as an implicit request to reply via the reverse direction of the tested = LSP.
 
2.    Reply Mode = Order TLV
I am not = convinced of the need for this TLV. There is not much reply modes which = are usable today together. Only reply mode 2 can be concurrently used = with reply mode 5 in RFC 7110 or reply mode 4. Reply mode 3 is not very = popular as far as I know. Also, most applications would reply with mode = 2 if the requested mode is not available. So, I can=92t see how this new = TLV will be useful in practice.
 
Regards,
Mustapha.
______________________= _________________________
mpls mailing list
mpls@ietf.org
https://www.ietf.org/mailman/listinfo/mpls

= --Apple-Mail=_F446718F-1F29-456C-B3D4-58739C0962CE-- From nobody Thu Jul 3 17:53:10 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B0B8A1B2B83; Thu, 3 Jul 2014 17:53:06 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -101.57 X-Spam-Level: X-Spam-Status: No, score=-101.57 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_FONT_FACE_BAD=0.981, HTML_MESSAGE=0.001, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ISTFv925PTj4; Thu, 3 Jul 2014 17:52:59 -0700 (PDT) Received: from smtpeg.etri.re.kr (smtpeg1.etri.re.kr [129.254.27.141]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 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verify=FAIL); Fri, 4 Jul 2014 00:56:05 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-rcd-x10.cisco.com ([173.37.183.84]) with mapi id 14.03.0123.003; Thu, 3 Jul 2014 19:56:05 -0500 From: "Nobo Akiya (nobo)" To: "Aissaoui, Mustapha (Mustapha)" , "mpls@ietf.org" Thread-Topic: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 Thread-Index: Ac+Kbg0JI45wiuB+QkmRpWOTfjvnXAAAEROQAn/CxAAArCcJUA== Date: Fri, 4 Jul 2014 00:56:04 +0000 Message-ID: References: <4A79394211F1AF4EB57D998426C9340D946A9035@US70UWXCHMBA01.zam.alcatel-lucent.com> <4A79394211F1AF4EB57D998426C9340D946C86F6@US70UWXCHMBA01.zam.alcatel-lucent.com> In-Reply-To: <4A79394211F1AF4EB57D998426C9340D946C86F6@US70UWXCHMBA01.zam.alcatel-lucent.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.254.158] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/WdH8Mk5sgEMsbum4XM8U8EomupE Cc: "Jeffrey \(Zhaohui\) Zhang" , "draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org" , Ross Callon , "mpls-chairs@tools.ietf.org" , "jeremy.whittaker@verizon.com" Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Jul 2014 00:56:08 -0000 Hello Mustapha, Thank you for reviewing this document! Let me provide my individual reply (not speaking for all the authors). > -----Original Message----- > From: Aissaoui, Mustapha (Mustapha) [mailto:mustapha.aissaoui@alcatel- > lucent.com] > Sent: Thursday, July 03, 2014 6:48 PM > To: mpls@ietf.org > Cc: draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org; mpls- > chairs@tools.ietf.org; VIGOUREUX, MARTIN (MARTIN); Aissaoui, Mustapha > (Mustapha); Ross Callon; Jeffrey (Zhaohui) Zhang; > jeremy.whittaker@verizon.com > Subject: RE: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode- > simple-02 >=20 > Dear all, > I was asked to review this draft and I think it describes valid issues to= be > resolved. I however have a couple of comments about the way the authors > went about to address them. >=20 > 1. Relation to RFC 7110 - Return Path Specified Label Switched Path (LSP) > Ping. > Section 4.1 argues the reason why a separate reply mode is needed is for > wanting to omit the Reply Path TLV defined in RFC 7110 when the sender of > the echo request just wanted to use the return path of the tested LSP. I = do > not see this as a strong justification. In many cases, the LSP is unidire= ctional > or the responder node is a transit LSR and may not be able to inject the = reply > in the reverse direction of that LSP. In that case, I can see that provid= ing a > specific return LSP which is different than the tested LSP is required an= d the > Reply Path TLV is needed. >=20 > Assuming this is still an important issue for the authors, I would sugges= t to > relax the rule in RFC 7110 such that if the echo request includes reply m= ode > 5 "Reply via Specified Path" and the Reply Path TLV is not included, the > responder node will interpret this as an implicit request to reply via th= e > reverse direction of the tested LSP. If that's more desired by the WG, I have no objection to that as long as it= doesn't require a TLV to indicate reverse LSP :) >=20 > 2. Reply Mode Order TLV > I am not convinced of the need for this TLV. There is not much reply mode= s > which are usable today together. Only reply mode 2 can be concurrently > used with reply mode 5 in RFC 7110 or reply mode 4. Reply mode 3 is not > very popular as far as I know. Also, most applications would reply with > mode 2 if the requested mode is not available. So, I can't see how this n= ew > TLV will be useful in practice. You are absolutely correct, not all combinations of the reply modes in the = Reply Mode TLV is realistic. Value Meaning ----- ------- 1 Do not reply 2 Reply via an IPv4/IPv6 UDP packet 3 Reply via an IPv4/IPv6 UDP packet with Router Alert 4 Reply via application level control channel 5 Reply via Specified Path=20 6 Reply via reverse LSP=20 Ping is simple, but let's talk about traceroute. I can imagine following example usage: (1) User prefers IP return path: If (LSP_w_reverse_LSP) { ReplyModeTLV{2, 6} } else if (LSP_w_control_channel) { ReplyModeTLV{2, 4} } else { ReplyMode{2} } (2) User does not prefer IP return path: If (LSP_w_reverse_LSP) { ReplyModeTLV{6, 2} } else if (LSP_w_control_channel) { ReplyModeTLV{4, 2} } else { ReplyMode{2} } Or user can specify a preference to be used for all LSP types (those who wa= nts to make sure response is received back one way or another). (3) User prefers IP return path: If (all_LSP_types) { ReplyModeTLV{2, 6, 4} } else { ReplyMode{2} } (4) User does not prefer IP return path: If (all_LSP_types) { ReplyModeTLV{4, 6, 2} } else { ReplyMode{2} } I hope this answers your comments/concerns a bit :) Thanks! -Nobo >=20 > Regards, > Mustapha. From nobody Thu Jul 3 18:25:58 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 640391B28B8 for ; Thu, 3 Jul 2014 18:25:55 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -115.152 X-Spam-Level: X-Spam-Status: No, score=-115.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id vhu061AcQB39 for ; Thu, 3 Jul 2014 18:25:51 -0700 (PDT) Received: from alln-iport-6.cisco.com (alln-iport-6.cisco.com [173.37.142.93]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 6FFBA1B27FA for ; Thu, 3 Jul 2014 18:25:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=7219; q=dns/txt; s=iport; t=1404437151; x=1405646751; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=9ygH8/lMFfZxA8gNwP1xRGQ9npHRTeASsDplXXkQZMw=; b=hphw6dboxT7FR7Hp66ON2QobKz/xjjYMt9wKSqbIhnyGFXyZh7J0Q/83 YBq3oNCS0PjYyFC2yLzClKx0yyB4Any+um9iojOHJEradY9/e4EoEurC3 oE/7oVJFSyHo5GvZGahMQ0ghB56b/s3ykJZeyzz4wbMIILbCm1hCBiymh M=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AhIFAEUCtlOtJA2D/2dsb2JhbABQCoJpJFJavmKHPwGBDBZ1hAMBAQEDAQEBAWsEBwUHBAIBCBEEAQEBCh0HJwsUCQgBAQQOBQgTiBMDCQgBDMkrEwSMeoFMKzEHBoMngRYFiheMRZglg0OCMA X-IronPort-AV: E=Sophos;i="5.01,598,1400025600"; d="scan'208";a="58222897" Received: from alln-core-1.cisco.com ([173.36.13.131]) by alln-iport-6.cisco.com with ESMTP; 04 Jul 2014 01:25:50 +0000 Received: from xhc-rcd-x15.cisco.com (xhc-rcd-x15.cisco.com [173.37.183.89]) by alln-core-1.cisco.com (8.14.5/8.14.5) with ESMTP id s641PoF3012848 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Fri, 4 Jul 2014 01:25:50 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-rcd-x15.cisco.com ([173.37.183.89]) with mapi id 14.03.0123.003; Thu, 3 Jul 2014 20:25:50 -0500 From: "Nobo Akiya (nobo)" To: Sam Aldrin , "Aissaoui, Mustapha (Mustapha)" Thread-Topic: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 Thread-Index: Ac+Kbg0JI45wiuB+QkmRpWOTfjvnXAAAEROQAn/CxAAAtFWXAAAHKr7g Date: Fri, 4 Jul 2014 01:25:49 +0000 Message-ID: References: <4A79394211F1AF4EB57D998426C9340D946A9035@US70UWXCHMBA01.zam.alcatel-lucent.com> <4A79394211F1AF4EB57D998426C9340D946C86F6@US70UWXCHMBA01.zam.alcatel-lucent.com> <9EB527EE-2C56-405D-9340-88A3184A48CA@gmail.com> In-Reply-To: <9EB527EE-2C56-405D-9340-88A3184A48CA@gmail.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.254.158] Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/qtI92VC_QNdl-KFkqZ8WKrCUJxY Cc: "mpls@ietf.org" , "Jeffrey \(Zhaohui\) Zhang" , "draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org" , Ross Callon , "mpls-chairs@tools.ietf.org" , "jeremy.whittaker@verizon.com" Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Jul 2014 01:25:55 -0000 Hi again Sam :) Please see in-line. > -----Original Message----- > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Sam Aldrin > Sent: Thursday, July 03, 2014 7:16 PM > To: Aissaoui, Mustapha (Mustapha) > Cc: mpls@ietf.org; Jeffrey (Zhaohui) Zhang; draft-akiya-mpls-lsp-ping-rep= ly- > mode-simple@tools.ietf.org; Ross Callon; mpls-chairs@tools.ietf.org; > jeremy.whittaker@verizon.com > Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply- > mode-simple-02 >=20 > Authors, >=20 > I too raised the below points highlighted by Mustapha, earlier. In additi= on I > have a more high-level question. >=20 > In the Introduction it says > "However, it is becoming increasingly difficult for an initiator to > select a valid return path to encode in the MPLS LSP echo request > packets. If the initiator does not select a valid return path, the > MPLS LSP echo reply will not get back to the initiator. This results > in a false failure of MPLS LSP Ping and Traceroute operation. In an > effort to minimize such false failures, different implementations > have chosen different default return path encoding for different LSP > types and LSP operations. The problem with implementations having > different default return path encoding is that the MPLS echo reply > will not work in many cases, and the default value may not be the > preferred choice by the operators. > " >=20 > The problems I have is regarding the need for this ID are 1. Can we solve= the > problem without the need for this ID/solution? Answer is yes, albeit it t= akes > one or more requests. If you say, it is solving a problem which was could= n't > be solved earlier, I would like to see. The problem can be addressed with vendors iterating the operation with mult= iple Return Paths when the previous try didn't work. And exact behavior bei= ng well document and operators fully understanding potentially different be= havior per LSP types, per ping/trace operation type and deviating behaviors= across multiple vendors/products. If you implement this, with user prefere= nce knob (yes some prefers IP return path while other do not prefer IP retu= rn path), imagine yourself trying to explain to users how things work, and = imagine yourself trying to explain why vendors/products behave differently.= I sure wouldn't want to :) It's indeed not a problem that cannot be solved= , but it's an aspect of LSP Ping/Trace that can be simplified in terms of i= mplementations and especially operations! > 2. The proposal still cannot identify the problem even with multiple repl= y > modes. If reply cannot be received, adding more reply types may not solve > the issue. That is not what the document is trying to achieve. > 3. This proposed solution works only if the problem is on the replying no= de. > But if the problem is on the transit node of the reply path, this solutio= n will > not work either. Again, that is not what the document is trying to achieve. > 4. As I mentioned earlier, for this new proposal to work effectively, the > responding device has to support this new TLV. Which means, whole of the > network has to support at one point of time of the other. Correct, those transit LSRs not understanding this procedure will simply us= e the Reply Mode field in the MPLS echo request. > 5. With the proposed solution, to determine the problem, one also needs t= o > read the 'reply mode' used by the replying device. IOW, return code + rep= ly > mode used will actually define the behavior. This changes the definition = of > RFC4379. 6. Specific to the text above, I do not agree that the problem i= s due > to implementation. It is the user choice which ever reply mode he/she > wants to use. If using CLI, could chose different reply mode. If it is > application, he/she could select it there. User prefers control channel for operations on TP tunnels. traceroute mpls ... [default reply mode 4 used] Timeout Timeout Timeout Timeout ... Success Operator: What the heck! <20 minutes later> Operator: Oh man, there is no problem! This is tunnel 100 and is not 200, i= t's not co-routed! Just an example :) If possible (and yes it is), the tool should provide better experience to u= sers. >=20 > The point is, why to introduce this optimization solution, where one coul= d > solve the problem without any of this new upgrade? Well, this is my 3rd or 4th attempt to convince you on this topic, so I'll = skip this question :) > Alternatively, for ex: If the reply was being received with reply mode '5= , but > now I don't receive it now, send a new request with reply mode 1. This is > more simple than the proposed solution without needing any change. > I'd be open to hearing the strong reason, this ID is solving, which could= n't be > solved with RFC4379. Why would you send reply mode 1 (Do no reply) if reply mode 5 (Reply via Sp= ecified Path) starts timing out? That sounds a very silly, but maybe I'm mi= ssing something. Thanks! -Nobo =20 >=20 > cheers > -sam >=20 >=20 > On Jul 3, 2014, at 3:47 PM, Aissaoui, Mustapha (Mustapha) > wrote: >=20 >=20 > Dear all, > I was asked to review this draft and I think it describes valid issues to= be > resolved. I however have a couple of comments about the way the authors > went about to address them. >=20 > 1.=A0=A0=A0=A0Relation to RFC 7110 - Return Path Specified Label Switched= Path (LSP) > Ping. > Section 4.1 argues the reason why a separate reply mode is needed is for > wanting to omit the Reply Path TLV defined in RFC 7110 when the sender of > the echo request just wanted to use the return path of the tested LSP. I = do > not see this as a strong justification. In many cases, the LSP is unidire= ctional > or the responder node is a transit LSR and may not be able to inject the = reply > in the reverse direction of that LSP. In that case, I can see that provid= ing a > specific return LSP which is different than the tested LSP is required an= d the > Reply Path TLV is needed. > Assuming this is still an important issue for the authors, I would sugges= t to > relax the rule in RFC 7110 such that if the echo request includes reply m= ode > 5 "Reply via Specified Path" and the Reply Path TLV is not included, the > responder node will interpret this as an implicit request to reply via th= e > reverse direction of the tested LSP. >=20 > 2.=A0=A0=A0=A0Reply Mode Order TLV > I am not convinced of the need for this TLV. There is not much reply mode= s > which are usable today together. Only reply mode 2 can be concurrently > used with reply mode 5 in RFC 7110 or reply mode 4. Reply mode 3 is not > very popular as far as I know. Also, most applications would reply with > mode 2 if the requested mode is not available. So, I can't see how this n= ew > TLV will be useful in practice. >=20 > Regards, > Mustapha. > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls From nobody Thu Jul 3 19:33:02 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 4321D1B297B for ; Thu, 3 Jul 2014 19:32:58 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id DBSS67rsMBlU for ; Thu, 3 Jul 2014 19:32:55 -0700 (PDT) Received: from mail-pd0-x230.google.com (mail-pd0-x230.google.com [IPv6:2607:f8b0:400e:c02::230]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 5BAF51B296C for ; Thu, 3 Jul 2014 19:32:55 -0700 (PDT) Received: by mail-pd0-f176.google.com with SMTP id ft15so1175145pdb.21 for ; Thu, 03 Jul 2014 19:32:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=content-type:mime-version:subject:from:in-reply-to:date:cc :message-id:references:to; bh=5zVLVW8eCAfsZRFmtJhWUgFTPu9m3LnEU7/q+V46Oi8=; b=QnpYvl/5P8rn33RGso7sCWC6iypCOAaOesoeUKrqvRs5TL6AkLfhrK1fhXMrIPXIqb wGeeN/SThIRs731XEN4emTXM0Z3MiP+ZvywtzQuvllOkKRV/5WarJWSk5vR/3JGFeHEX O154egOAO4uQJLShkSo6N550sh1TvtvKMrG3Jol4aW0VigTpTBGfG9ki/TBB7YsdaQyY fGZSq7wLY6Wlv2jjaWemzrQP5TeyvkPLai1QknAYcU2nkgpgmiJYzLMlmbZkfVWa5itk 2TNy31sdhdz+ycB7L2rvRRzrYC5cj7pS22CctgywJWguwhIDQtTFgPtZgrJyzW4F8hu2 3AIA== X-Received: by 10.68.239.73 with SMTP id vq9mr78923266pbc.99.1404441174993; Thu, 03 Jul 2014 19:32:54 -0700 (PDT) Received: from [192.168.1.8] (c-107-3-154-60.hsd1.ca.comcast.net. [107.3.154.60]) by mx.google.com with ESMTPSA id fs3sm17033507pac.44.2014.07.03.19.32.51 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 03 Jul 2014 19:32:52 -0700 (PDT) Content-Type: multipart/alternative; boundary="Apple-Mail=_5BB00B7E-A319-4B70-B905-61E09A7169C7" Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) From: Sam Aldrin In-Reply-To: Date: Thu, 3 Jul 2014 19:32:50 -0700 Message-Id: <3ECD02EE-71E6-4AC5-BBB5-CC0C354219B0@gmail.com> References: <4A79394211F1AF4EB57D998426C9340D946A9035@US70UWXCHMBA01.zam.alcatel-lucent.com> <4A79394211F1AF4EB57D998426C9340D946C86F6@US70UWXCHMBA01.zam.alcatel-lucent.com> <9EB527EE-2C56-405D-9340-88A3184A48CA@gmail.com> To: "Nobo Akiya (nobo)" X-Mailer: Apple Mail (2.1878.6) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/F3kzKv5iUkevoM_Gvnvlcy2dTco Cc: "mpls@ietf.org" , "Jeffrey \(Zhaohui\) Zhang" , Ross Callon , "draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org" , "mpls-chairs@tools.ietf.org" , "jeremy.whittaker@verizon.com" Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Jul 2014 02:32:58 -0000 --Apple-Mail=_5BB00B7E-A319-4B70-B905-61E09A7169C7 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 Hi Nobo, thanks again :D Inline for my comments. On Jul 3, 2014, at 6:25 PM, Nobo Akiya (nobo) wrote: > Hi again Sam :) >=20 > Please see in-line. >=20 >> -----Original Message----- >> From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Sam Aldrin >> Sent: Thursday, July 03, 2014 7:16 PM >> To: Aissaoui, Mustapha (Mustapha) >> Cc: mpls@ietf.org; Jeffrey (Zhaohui) Zhang; = draft-akiya-mpls-lsp-ping-reply- >> mode-simple@tools.ietf.org; Ross Callon; mpls-chairs@tools.ietf.org; >> jeremy.whittaker@verizon.com >> Subject: Re: [mpls] MPLS-RT review of = draft-akiya-mpls-lsp-ping-reply- >> mode-simple-02 >>=20 >> Authors, >>=20 >> I too raised the below points highlighted by Mustapha, earlier. In = addition I >> have a more high-level question. >>=20 >> In the Introduction it says >> "However, it is becoming increasingly difficult for an initiator to >> select a valid return path to encode in the MPLS LSP echo request >> packets. If the initiator does not select a valid return path, the >> MPLS LSP echo reply will not get back to the initiator. This = results >> in a false failure of MPLS LSP Ping and Traceroute operation. In = an >> effort to minimize such false failures, different implementations >> have chosen different default return path encoding for different = LSP >> types and LSP operations. The problem with implementations having >> different default return path encoding is that the MPLS echo reply >> will not work in many cases, and the default value may not be the >> preferred choice by the operators. >> " >>=20 >> The problems I have is regarding the need for this ID are 1. Can we = solve the >> problem without the need for this ID/solution? Answer is yes, albeit = it takes >> one or more requests. If you say, it is solving a problem which was = couldn't >> be solved earlier, I would like to see. >=20 > The problem can be addressed with vendors iterating the operation with = multiple Return Paths when the previous try didn't work. > And exact behavior being well document and operators fully = understanding potentially different behavior per LSP types, per = ping/trace operation type and deviating behaviors across multiple = vendors/products. If you implement this, with user preference knob (yes = some prefers IP return path while other do not prefer IP return path), = imagine yourself trying to explain to users how things work, and imagine = yourself trying to explain why vendors/products behave differently. I = sure wouldn't want to :) It's indeed not a problem that cannot be = solved, but it's an aspect of LSP Ping/Trace that can be simplified in = terms of implementations and especially operations! %sam - You say it didn=92t work. Could you provide info why it didn=92t = work? In the last sentence you say it simplifies. So does it simplify or = is it fixing something which was not working earlier? LSP ping itself is full of knobs and it has to be explained. You could = find that in every vendors documentation and it is nothing knew. I know = it because I have authored much of the documentation. >=20 >> 2. The proposal still cannot identify the problem even with multiple = reply >> modes. If reply cannot be received, adding more reply types may not = solve >> the issue. >=20 > That is not what the document is trying to achieve. %sam - ok. we agree. >=20 >> 3. This proposed solution works only if the problem is on the = replying node. >> But if the problem is on the transit node of the reply path, this = solution will >> not work either. >=20 > Again, that is not what the document is trying to achieve. %sam - so, we agree that this enhancement is for replying node only. >=20 >> 4. As I mentioned earlier, for this new proposal to work effectively, = the >> responding device has to support this new TLV. Which means, whole of = the >> network has to support at one point of time of the other. >=20 > Correct, those transit LSRs not understanding this procedure will = simply use the Reply Mode field in the MPLS echo request. %sam - nod. >=20 >> 5. With the proposed solution, to determine the problem, one also = needs to >> read the 'reply mode' used by the replying device. IOW, return code + = reply >> mode used will actually define the behavior. This changes the = definition of >> RFC4379. 6. Specific to the text above, I do not agree that the = problem is due >> to implementation. It is the user choice which ever reply mode he/she >> wants to use. If using CLI, could chose different reply mode. If it = is >> application, he/she could select it there. >=20 > User prefers control channel for operations on TP tunnels. >=20 > traceroute mpls ... [default reply mode 4 used] >=20 > Timeout > Timeout > Timeout > Timeout > ... > Success >=20 > Operator: What the heck! >=20 > <20 minutes later> >=20 > Operator: Oh man, there is no problem! This is tunnel 100 and is not = 200, it's not co-routed! >=20 > Just an example :) >=20 > If possible (and yes it is), the tool should provide better experience = to users. Here is a counter example and response to your example, below. traceroute mpls =85[new tlv - reply mode 5, 2] /* reply mode 5 or 4, I = am just illustrating with 5 here */ success success success success 1hr later, oh shoot, return path is broken but I am getting success = because replies are in the ip path and not on reverse LSP. this is much more harmful than not receiving reply. And to your example, few very important points I=92d like to make 1. getting a timeout is not an issue, when lsp ping command is = incorrectly issued. Infact it is correct. No one can set that right, = when user issues wrong command. 2. What I fail to understand is, how does your proposed solution make it = right? Just because you get the reply all is well? what if the return = path is indeed broken (as illustrated in my example above), you will not = be able to infer something is wrong, (strictly interpreting RFC4379) = because return code received is =913/8/5/6=92.=20 3. Specific to your example, when you perform trace on non-corouted TP = tunnels, timeout SHOULD be returned when there is no return lsp for in = band reply from p1 and p2, because the return path chosen is =91reply = mode 4=92. In order to give =91better experience=92 what command will = you issue and how different the o/p will be, assuming there is no ip on = intermediate nodes.(p1, p2,p3,p4) Sample topology below /=97=97=97=97P1=97=97P2=97=97=97\ PE1=97=97=97 PE2 \=97=97=97=97P3=97=97P4--=97=97-/ PE1->PE2 lsp is via p1, p2 PE2->PE1 lsp is via p4,p3 >=20 >>=20 >> The point is, why to introduce this optimization solution, where one = could >> solve the problem without any of this new upgrade? >=20 > Well, this is my 3rd or 4th attempt to convince you on this topic, so = I'll skip this question :) %sam - That is fine. Point remains though :D >=20 >> Alternatively, for ex: If the reply was being received with reply = mode '5, but >> now I don't receive it now, send a new request with reply mode 1. = This is >> more simple than the proposed solution without needing any change. >> I'd be open to hearing the strong reason, this ID is solving, which = couldn't be >> solved with RFC4379. >=20 > Why would you send reply mode 1 (Do no reply) if reply mode 5 (Reply = via Specified Path) starts timing out? That sounds a very silly, but = maybe I'm missing something. typo. Meant to say reply mode 2.=20 >=20 > Thanks! >=20 > -Nobo >=20 >>=20 >> cheers >> -sam >>=20 >>=20 >> On Jul 3, 2014, at 3:47 PM, Aissaoui, Mustapha (Mustapha) >> wrote: >>=20 >>=20 >> Dear all, >> I was asked to review this draft and I think it describes valid = issues to be >> resolved. I however have a couple of comments about the way the = authors >> went about to address them. >>=20 >> 1. Relation to RFC 7110 - Return Path Specified Label Switched = Path (LSP) >> Ping. >> Section 4.1 argues the reason why a separate reply mode is needed is = for >> wanting to omit the Reply Path TLV defined in RFC 7110 when the = sender of >> the echo request just wanted to use the return path of the tested = LSP. I do >> not see this as a strong justification. In many cases, the LSP is = unidirectional >> or the responder node is a transit LSR and may not be able to inject = the reply >> in the reverse direction of that LSP. In that case, I can see that = providing a >> specific return LSP which is different than the tested LSP is = required and the >> Reply Path TLV is needed. >> Assuming this is still an important issue for the authors, I would = suggest to >> relax the rule in RFC 7110 such that if the echo request includes = reply mode >> 5 "Reply via Specified Path" and the Reply Path TLV is not included, = the >> responder node will interpret this as an implicit request to reply = via the >> reverse direction of the tested LSP. >>=20 >> 2. Reply Mode Order TLV >> I am not convinced of the need for this TLV. There is not much reply = modes >> which are usable today together. Only reply mode 2 can be = concurrently >> used with reply mode 5 in RFC 7110 or reply mode 4. Reply mode 3 is = not >> very popular as far as I know. Also, most applications would reply = with >> mode 2 if the requested mode is not available. So, I can't see how = this new >> TLV will be useful in practice. >>=20 >> Regards, >> Mustapha. >> _______________________________________________ >> mpls mailing list >> mpls@ietf.org >> https://www.ietf.org/mailman/listinfo/mpls --Apple-Mail=_5BB00B7E-A319-4B70-B905-61E09A7169C7 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252 Hi = Nobo,

thanks again :D
Inline for my = comments.
On Jul 3, 2014, at 6:25 PM, Nobo Akiya (nobo) = <nobo@cisco.com> = wrote:

Hi again Sam :)

Please see = in-line.

-----Original = Message-----
From: mpls [mailto:mpls-bounces@ietf.org] = On Behalf Of Sam Aldrin
Sent: Thursday, July 03, 2014 7:16 PM
To: = Aissaoui, Mustapha (Mustapha)
Cc: mpls@ietf.org; Jeffrey (Zhaohui) = Zhang; draft-akiya-mpls-lsp-ping-reply-
mode-simple@tools.ietf.org;= Ross Callon; mpls-chairs@tools.ietf.org;=
jeremy.whittaker@verizon.com<= /a>
Subject: Re: [mpls] MPLS-RT review of = draft-akiya-mpls-lsp-ping-reply-
mode-simple-02

Authors,

= I too raised the below points highlighted by Mustapha, earlier. In = addition I
have a more high-level question.

In the = Introduction it says
"However, it is becoming increasingly difficult = for an initiator to
  select a valid return path to encode = in the MPLS LSP echo request
  packets.  If the = initiator does not select a valid return path, the
  MPLS = LSP echo reply will not get back to the initiator.  This = results
  in a false failure of MPLS LSP Ping and = Traceroute operation.  In an
  effort to minimize such = false failures, different implementations
  have chosen = different default return path encoding for different = LSP
  types and LSP operations.  The problem with = implementations having
  different default return path = encoding is that the MPLS echo reply
  will not work in = many cases, and the default value may not be = the
  preferred choice by the operators.
"

The = problems I have is regarding the need for this ID are 1. Can we solve = the
problem without the need for this ID/solution? Answer is yes, = albeit it takes
one or more requests. If you say, it is solving a = problem which was couldn't
be solved earlier, I would like to = see.

The problem can be addressed with vendors = iterating the operation with multiple Return Paths when the previous try = didn't work.
%sam - You say it didn=92t work. Could = you provide info why it didn=92t work? In the last sentence you say it = simplifies. So does it simplify or is it fixing something which was not = working earlier?
LSP ping itself is full of knobs and it has = to be explained. You could find that in every vendors documentation and = it is nothing knew. I know it because I have authored much of the = documentation.

2. The proposal still cannot = identify the problem even with multiple reply
modes. If reply cannot = be received, adding more reply types may not solve
the = issue.

That is not what the document is trying to = achieve.
%sam - ok. we agree.

3. = This proposed solution works only if the problem is on the replying = node.
But if the problem is on the transit node of the reply path, = this solution will
not work either.

Again, that = is not what the document is trying to = achieve.
%sam - so, we agree that this enhancement = is for replying node only.

4. As I = mentioned earlier, for this new proposal to work effectively, = the
responding device has to support this new TLV. Which means, whole = of the
network has to support at one point of time of the = other.

Correct, those transit LSRs not understanding = this procedure will simply use the Reply Mode field in the MPLS echo = request.
%sam - nod.

5. = With the proposed solution, to determine the problem, one also needs = to
read the 'reply mode' used by the replying device. IOW, return = code + reply
mode used will actually define the behavior. This = changes the definition of
RFC4379. 6. Specific to the text above, I = do not agree that the problem is due
to implementation. It is the = user choice which ever reply mode he/she
wants to use. If using CLI, = could chose different reply mode. If it is
application, he/she could = select it there.

User prefers control channel for = operations on TP tunnels.

traceroute mpls ... [default reply mode = 4 = used]

Timeout
Timeout
Timeout
Timeout
...
Success
Operator: What the heck!

<20 minutes = later>

Operator: Oh man, there is no problem! This is tunnel = 100 and is not 200, it's not co-routed!

Just an example = :)

If possible (and yes it is), the tool should provide better = experience to users.
Here is a counter example and = response to your example, below.


success
success

1hr later, oh shoot, return = path is broken but I am getting success because replies are in the ip = path and not on reverse LSP.

this is much more = harmful than not receiving reply.

And to your = example, few very important points I=92d like to make
1. = getting a timeout is not an issue, when lsp ping command is incorrectly = issued. Infact it is correct. No one can set that right, when user = issues wrong command.
2. What I fail to understand is, how = does your proposed solution make it right? Just because you get the = reply all is well? what if the return path is indeed broken (as = illustrated in my example above), you will not be able to infer = something is wrong, (strictly interpreting RFC4379) because return code = received is =913/8/5/6=92. 
3. Specific to your example, = when you perform trace on non-corouted TP tunnels, timeout SHOULD be = returned when there is no return lsp for in band reply from p1 and p2, = because the return path chosen is =91reply mode 4=92. In order to give = =91better experience=92 what command will you issue and how different = the o/p will be, assuming there is no ip on intermediate nodes.(p1, = p2,p3,p4) Sample topology below

    =           =  /=97=97=97=97P1=97=97P2=97=97=97\
PE1=97=97=97   =                     =                   = PE2
              = \=97=97=97=97P3=97=97P4--=97=97-/

PE1->PE2 = lsp is via p1, p2
PE2->PE1 lsp is via p4,p3


The point is, why to introduce this optimization = solution, where one could
solve the problem without any of this new = upgrade?

Well, this is my 3rd or 4th attempt to = convince you on this topic, so I'll skip this question = :)
%sam - That is fine. Point remains though = :D

Alternatively, for ex: If the reply = was being received with reply mode '5, but
now I don't receive it = now, send a new request with reply mode 1. This is
more simple than = the proposed solution without needing any change.
I'd be open to = hearing the strong reason, this ID is solving, which couldn't = be
solved with RFC4379.

Why would you send reply = mode 1 (Do no reply) if reply mode 5 (Reply via Specified Path) starts = timing out? That sounds a very silly, but maybe I'm missing = something.
typo. Meant to say reply mode = 2. 

Thanks!

-Nobo


cheers
-sam


On Jul 3, 2014, at 3:47 PM, = Aissaoui, Mustapha (Mustapha)
<mustapha.aissaoui@alc= atel-lucent.com> wrote:


Dear all,
I was asked to = review this draft and I think it describes valid issues to = be
resolved. I however have a couple of comments about the way the = authors
went about to address = them.

1.    Relation to RFC 7110 - Return = Path Specified Label Switched Path (LSP)
Ping.
Section 4.1 argues = the reason why a separate reply mode is needed is for
wanting to omit = the Reply Path TLV defined in RFC 7110 when the sender of
the echo = request just wanted to use the return path of the tested LSP. I = do
not see this as a strong justification. In many cases, the LSP is = unidirectional
or the responder node is a transit LSR and may not be = able to inject the reply
in the reverse direction of that LSP. In = that case, I can see that providing a
specific return LSP which is = different than the tested LSP is required and the
Reply Path TLV is = needed.
Assuming this is still an important issue for the authors, I = would suggest to
relax the rule in RFC 7110 such that if the echo = request includes reply mode
5 "Reply via Specified Path" and the = Reply Path TLV is not included, the
responder node will interpret = this as an implicit request to reply via the
reverse direction of the = tested LSP.

2.    Reply Mode Order TLV
I = am not convinced of the need for this TLV. There is not much reply = modes
which are usable today together. Only reply mode 2 can be = concurrently
used with reply mode 5 in RFC 7110 or reply mode 4. = Reply mode 3 is not
very popular as far as I know. Also, most = applications would reply with
mode 2 if the requested mode is not = available. So, I can't see how this new
TLV will be useful in = practice.

Regards,
Mustapha.
________________________________= _______________
mpls mailing list
mpls@ietf.org
https://www.ietf.org/ma= ilman/listinfo/mpls

= = --Apple-Mail=_5BB00B7E-A319-4B70-B905-61E09A7169C7-- From nobody Thu Jul 3 20:34:05 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5E11D1B28BC; Thu, 3 Jul 2014 20:34:01 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id lqEmhYmL0hEc; Thu, 3 Jul 2014 20:33:59 -0700 (PDT) Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id DDB821B2B41; Thu, 3 Jul 2014 20:33:59 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: i-d-announce@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 5.6.0.p1 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <20140704033359.25242.62506.idtracker@ietfa.amsl.com> Date: Thu, 03 Jul 2014 20:33:59 -0700 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/0CjZRD3iyj9Y7rd1naj5wvK-LFQ Cc: mpls@ietf.org Subject: [mpls] I-D Action: draft-ietf-mpls-rsvp-egress-protection-01.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Jul 2014 03:34:01 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF. Title : Extensions to RSVP-TE for LSP Egress Local Protection Authors : Huaimo Chen Zhenbin Li Ning So Autumn Liu Fengman Xu Mehmet Toy Lu Huang Lei Liu Filename : draft-ietf-mpls-rsvp-egress-protection-01.txt Pages : 15 Date : 2014-07-03 Abstract: This document describes extensions to Resource Reservation Protocol - Traffic Engineering (RSVP-TE) for locally protecting egress nodes of a Traffic Engineered (TE) Label Switched Path (LSP) in a Multi- Protocol Label Switching (MPLS) and Generalized MPLS (GMPLS) network. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-rsvp-egress-protection/ There's also a htmlized version available at: http://tools.ietf.org/html/draft-ietf-mpls-rsvp-egress-protection-01 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-rsvp-egress-protection-01 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Thu Jul 3 20:38:50 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id CC7CF1B2B93; Thu, 3 Jul 2014 20:38:46 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id WqcBxq5mpD3S; Thu, 3 Jul 2014 20:38:42 -0700 (PDT) Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 91EF81B28BC; Thu, 3 Jul 2014 20:38:42 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: i-d-announce@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 5.6.0.p1 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <20140704033842.25277.2511.idtracker@ietfa.amsl.com> Date: Thu, 03 Jul 2014 20:38:42 -0700 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/0uEPFKnAXy_gud9IftEADaquJvI Cc: mpls@ietf.org Subject: [mpls] I-D Action: draft-ietf-mpls-rsvp-ingress-protection-01.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Jul 2014 03:38:47 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF. Title : Extensions to RSVP-TE for LSP Ingress Local Protection Authors : Huaimo Chen Raveendra Torvi Filename : draft-ietf-mpls-rsvp-ingress-protection-01.txt Pages : 24 Date : 2014-07-03 Abstract: This document describes extensions to Resource Reservation Protocol - Traffic Engineering (RSVP-TE) for locally protecting the ingress node of a Traffic Engineered (TE) Label Switched Path (LSP) in a Multi- Protocol Label Switching (MPLS) and Generalized MPLS (GMPLS) network. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-rsvp-ingress-protection/ There's also a htmlized version available at: http://tools.ietf.org/html/draft-ietf-mpls-rsvp-ingress-protection-01 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-rsvp-ingress-protection-01 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Thu Jul 3 22:15:08 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8525C1B2BDB; Thu, 3 Jul 2014 22:15:06 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.552 X-Spam-Level: X-Spam-Status: No, score=-4.552 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, MIME_8BIT_HEADER=0.3, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id VmAjv0bqZiwb; Thu, 3 Jul 2014 22:15:05 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with 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<7347100B5761DC41A166AC17F22DF1121B7E50F6@eusaamb103.ericsson.se> <7347100B5761DC41A166AC17F22DF1121B7E5B9B@eusaamb103.ericsson.se> <7347100B5761DC41A166AC17F22DF1121B7E61F9@eusaamb103.ericsson.se> In-Reply-To: Accept-Language: en-US, zh-CN Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.45.28.44] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/81_DLeC2I3pcxWpqrhamOGounz8 Cc: "rtg-bfd@ietf.org" Subject: [mpls] =?utf-8?b?562U5aSNOiBOZXcgVmVyc2lvbiBOb3RpZmljYXRpb24gZm9y?= =?utf-8?q?_draft-mirsky-mpls-bfd-directed-00=2Etxt?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Jul 2014 05:15:06 -0000 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with ESMTP id s64DSZiB005605 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Fri, 4 Jul 2014 13:28:35 GMT Received: from xmb-rcd-x15.cisco.com ([169.254.5.202]) by xhc-rcd-x01.cisco.com ([173.37.183.75]) with mapi id 14.03.0123.003; Fri, 4 Jul 2014 08:28:35 -0500 From: "Vengada Prasad Govindan (venggovi)" To: Gregory Mirsky , "Nobo Akiya (nobo)" , Mach Chen , "mpls@ietf.org" Thread-Topic: New Version Notification for draft-mirsky-mpls-bfd-directed-00.txt Thread-Index: AQHPlLkmcHLo4kmCjEWzfUskF7x6bpuLglYggAB+rECAAQbgIIAAZ8ZggABmrLCAAheN8A== Date: Fri, 4 Jul 2014 13:28:34 +0000 Message-ID: <315041E4211CB84E86EF7C25A2AB583D34623DD1@xmb-rcd-x15.cisco.com> References: <20140630231508.5203.4775.idtracker@ietfa.amsl.com> <7347100B5761DC41A166AC17F22DF1121B7E50F6@eusaamb103.ericsson.se> <7347100B5761DC41A166AC17F22DF1121B7E5B9B@eusaamb103.ericsson.se> <7347100B5761DC41A166AC17F22DF1121B7E61F9@eusaamb103.ericsson.se> In-Reply-To: <7347100B5761DC41A166AC17F22DF1121B7E61F9@eusaamb103.ericsson.se> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.65.51.103] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/XS_nTt4e2YofB75qpJfs0SPskJk Cc: "rtg-bfd@ietf.org" Subject: Re: [mpls] New Version Notification for draft-mirsky-mpls-bfd-directed-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Jul 2014 13:28:38 -0000 SGVsbG8gYWxsLCANCiBQbGVhc2UgZmluZCB0aGUgc3VibWlzc2lvbiBOb2JvIHJlZmVycyB0byBi ZWxvdyBhdDoNCg0KVVJMOiAgICAgICAgICAgIGh0dHA6Ly93d3cuaWV0Zi5vcmcvaW50ZXJuZXQt ZHJhZnRzL2RyYWZ0LXZnb3ZpbmRhbi1tcGxzLWV4dGVuZGVkLWJmZC1kaXNjLXRsdi0wMC50eHQN 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IFRoZSBJRVRGIFNlY3JldGFyaWF0DQoNCg== From nobody Fri Jul 4 07:10:05 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1A6CD1B29A1; Fri, 4 Jul 2014 07:10:01 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id J2tq2u_724-K; Fri, 4 Jul 2014 07:09:59 -0700 (PDT) Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id AA7A81B2971; Fri, 4 Jul 2014 07:09:59 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: i-d-announce@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 5.6.0.p1 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <20140704140959.2946.45830.idtracker@ietfa.amsl.com> Date: Fri, 04 Jul 2014 07:09:59 -0700 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/swzhDnVZW6p1T8OKathMd8z3H0g Cc: mpls@ietf.org Subject: [mpls] I-D Action: draft-akiya-mpls-entropy-lsp-ping-02.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Jul 2014 14:10:01 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF. Title : Label Switched Path (LSP) and Pseudowire (PW) Ping/Trace over MPLS Network using Entropy Labels (EL) Authors : Nobo Akiya George Swallow Carlos Pignataro Andrew G. Malis Sam Aldrin Filename : draft-akiya-mpls-entropy-lsp-ping-02.txt Pages : 22 Date : 2014-07-04 Abstract: The Multiprotocol Label Switching (MPLS) Label Switched Path (LSP) Ping and Traceroute are used to exercise specific paths of Equal-Cost Multipath (ECMP). When LSP is signaled to use Entropy Label (EL) described in RFC6790, the ability for LSP Ping and Traceroute operation to discover and exercise ECMP paths has been lost in scenarios which LSRs apply deviating load balance techniques. One such scenario is when some LSRs apply EL based load balancing while other LSRs apply non-EL based load balancing (ex: IP). Another scenario is when EL based LSP is stitched with another LSP which can be EL based or non-EL based. This document extends the MPLS LSP Ping and Traceroute mechanisms to restore the ability of exercising specific paths of ECMP over LSP which make use of Entropy Label. This document updates RFC4379, RFC6424 and RFC6790. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-akiya-mpls-entropy-lsp-ping/ There's also a htmlized version available at: http://tools.ietf.org/html/draft-akiya-mpls-entropy-lsp-ping-02 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-akiya-mpls-entropy-lsp-ping-02 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Fri Jul 4 07:18:58 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2A75A1B29B1 for ; Fri, 4 Jul 2014 07:18:54 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -115.152 X-Spam-Level: X-Spam-Status: No, score=-115.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id oTH1LGXaZGjq for ; Fri, 4 Jul 2014 07:18:52 -0700 (PDT) Received: from alln-iport-5.cisco.com (alln-iport-5.cisco.com [173.37.142.92]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 257CE1B2850 for ; Fri, 4 Jul 2014 07:18:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3212; q=dns/txt; s=iport; t=1404483532; x=1405693132; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=MaCYjwQpHw7laedqmcEsRAZWdV0dk6g6Ogz+8xndv+U=; b=fFVs2q1f0G3BOd9larS8ga80/jhs6mDWY3yW0LiwyhoukOHnxRH8QDBD ISxoT+Z//8Qoorga+VuJeFNfIQhs/PQ4RCLNqK0U0fttGk+MGKlGmGpZ4 vXQaluXog9Fz2NQYRSibcG8+9ih9NFhHgEkjdaMZ4hGTcogJluGac5SNc U=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AoMKAPG2tlOtJA2M/2dsb2JhbABagmokUlMHvmqHPwGBChZ1hAMBAQEEAQEBCywrCQsMBAIBCBEEAQELFAkHJwsUCQgCBA4FCAGIOQEHBcpBF45xMQcGgyeBFgWcPpJEg0OCMA X-IronPort-AV: E=Sophos;i="5.01,601,1400025600"; d="scan'208";a="58357897" Received: from alln-core-7.cisco.com ([173.36.13.140]) by alln-iport-5.cisco.com with ESMTP; 04 Jul 2014 14:18:51 +0000 Received: from xhc-aln-x02.cisco.com (xhc-aln-x02.cisco.com [173.36.12.76]) by alln-core-7.cisco.com (8.14.5/8.14.5) with ESMTP id s64EIos0001945 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Fri, 4 Jul 2014 14:18:50 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-aln-x02.cisco.com ([173.36.12.76]) with mapi id 14.03.0123.003; Fri, 4 Jul 2014 09:18:50 -0500 From: "Nobo Akiya (nobo)" To: "mpls@ietf.org" Thread-Topic: [mpls] I-D Action: draft-akiya-mpls-entropy-lsp-ping-02.txt Thread-Index: AQHPl5GuUEDzIzlKNE+FaV9fjbKA+JuP9lnQ Date: Fri, 4 Jul 2014 14:18:49 +0000 Message-ID: References: <20140704140959.2946.45830.idtracker@ietfa.amsl.com> In-Reply-To: <20140704140959.2946.45830.idtracker@ietfa.amsl.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [161.44.212.73] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/Cam01EP_1JmXgq2oms5Oo1jNc5k Cc: "Nagendra Kumar Nainar \(naikumar\)" Subject: Re: [mpls] I-D Action: draft-akiya-mpls-entropy-lsp-ping-02.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Jul 2014 14:18:54 -0000 Many thanks to Daniel King and Sriganesh Kini for reviewing and providing c= omments. Special thanks for Curtis Villamizar for providing number of valuable comme= nts and discussing many points patiently. Dear MPLS WG, We have incorporated comments provided, and published a revision. We will be asking the Shepherd to take this document through the WG adoptio= n process shortly. Thoughts, comments and questions are most welcome! Thanks! -Nobo, on behalf of authors > -----Original Message----- > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of internet- > drafts@ietf.org > Sent: Friday, July 04, 2014 10:10 AM > To: i-d-announce@ietf.org > Cc: mpls@ietf.org > Subject: [mpls] I-D Action: draft-akiya-mpls-entropy-lsp-ping-02.txt >=20 >=20 > A New Internet-Draft is available from the on-line Internet-Drafts > directories. > This draft is a work item of the Multiprotocol Label Switching Working > Group of the IETF. >=20 > Title : Label Switched Path (LSP) and Pseudowire (PW) P= ing/Trace > over MPLS Network using Entropy Labels (EL) > Authors : Nobo Akiya > George Swallow > Carlos Pignataro > Andrew G. Malis > Sam Aldrin > Filename : draft-akiya-mpls-entropy-lsp-ping-02.txt > Pages : 22 > Date : 2014-07-04 >=20 > Abstract: > The Multiprotocol Label Switching (MPLS) Label Switched Path (LSP) > Ping and Traceroute are used to exercise specific paths of Equal-Cost > Multipath (ECMP). When LSP is signaled to use Entropy Label (EL) > described in RFC6790, the ability for LSP Ping and Traceroute > operation to discover and exercise ECMP paths has been lost in > scenarios which LSRs apply deviating load balance techniques. One > such scenario is when some LSRs apply EL based load balancing while > other LSRs apply non-EL based load balancing (ex: IP). Another > scenario is when EL based LSP is stitched with another LSP which can > be EL based or non-EL based. >=20 > This document extends the MPLS LSP Ping and Traceroute mechanisms to > restore the ability of exercising specific paths of ECMP over LSP > which make use of Entropy Label. This document updates RFC4379, > RFC6424 and RFC6790. >=20 >=20 >=20 > The IETF datatracker status page for this draft is: > https://datatracker.ietf.org/doc/draft-akiya-mpls-entropy-lsp-ping/ >=20 > There's also a htmlized version available at: > http://tools.ietf.org/html/draft-akiya-mpls-entropy-lsp-ping-02 >=20 > A diff from the previous version is available at: > http://www.ietf.org/rfcdiff?url2=3Ddraft-akiya-mpls-entropy-lsp-ping-02 >=20 >=20 > Please note that it may take a couple of minutes from the time of > submission until the htmlized version and diff are available at tools.iet= f.org. >=20 > Internet-Drafts are also available by anonymous FTP at: > ftp://ftp.ietf.org/internet-drafts/ >=20 > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls From nobody Fri Jul 4 09:40:07 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id BE3C21A0B0A for ; Fri, 4 Jul 2014 09:39:59 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -6.9 X-Spam-Level: X-Spam-Status: No, score=-6.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PyMecVKeqUkU for ; Fri, 4 Jul 2014 09:39:57 -0700 (PDT) Received: from ihemail1.lucent.com (ihemail1.lucent.com [135.245.0.33]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A1AA81A0342 for ; Fri, 4 Jul 2014 09:39:57 -0700 (PDT) Received: from us70tusmtp1.zam.alcatel-lucent.com (h135-5-2-63.lucent.com [135.5.2.63]) by ihemail1.lucent.com (8.13.8/IER-o) with ESMTP id s64GdsK7025412 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 4 Jul 2014 11:39:54 -0500 (CDT) Received: from US70TWXCHHUB03.zam.alcatel-lucent.com (us70twxchhub03.zam.alcatel-lucent.com [135.5.2.35]) by us70tusmtp1.zam.alcatel-lucent.com (GMO) with ESMTP id s64GdrRf015749 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Fri, 4 Jul 2014 12:39:53 -0400 Received: from US70UWXCHMBA01.zam.alcatel-lucent.com ([169.254.7.233]) by US70TWXCHHUB03.zam.alcatel-lucent.com ([135.5.2.35]) with mapi id 14.02.0247.003; Fri, 4 Jul 2014 12:39:53 -0400 From: "Aissaoui, Mustapha (Mustapha)" To: "Nobo Akiya (nobo)" , "mpls@ietf.org" Thread-Topic: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 Thread-Index: Ac+Kbg0JI45wiuB+QkmRpWOTfjvnXAAAEROQAn/CxAAArCcJUAAhdPpQ Date: Fri, 4 Jul 2014 16:39:52 +0000 Message-ID: <4A79394211F1AF4EB57D998426C9340D946C8F07@US70UWXCHMBA01.zam.alcatel-lucent.com> References: <4A79394211F1AF4EB57D998426C9340D946A9035@US70UWXCHMBA01.zam.alcatel-lucent.com> <4A79394211F1AF4EB57D998426C9340D946C86F6@US70UWXCHMBA01.zam.alcatel-lucent.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [135.5.27.18] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/d4iRUP_EBF5_eAcKB_YSuYjdzi4 Cc: "Jeffrey \(Zhaohui\) Zhang" , "draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org" , Ross Callon , "mpls-chairs@tools.ietf.org" , "jeremy.whittaker@verizon.com" Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Jul 2014 16:39:59 -0000 Hi Nobo, Regarding the combinations of reply modes, my point is that usually type 2 = is treated as the default mode which the responder node will usually attemp= t if say type 4 or type 5 were requested in the echo request message but we= re not available. What would be a use case where you want to prefer type 2 = over types 4 or 5? I would have thought the latter being very specific retu= rn paths, the user would first try them and in case they are not available = then resort to type 2. Not the other way around. Also, do you have a use case for requesting types 4 and 5 together for the = same target FEC stack? I would have thought these not to be compatible. For= example, type 4 could be the return path of the tested PW but the responde= r node would not normally use type 5 and send the reply to the VCC ping usi= ng some other LSP. Mustapha. > -----Original Message----- > From: Nobo Akiya (nobo) [mailto:nobo@cisco.com] > Sent: Thursday, July 03, 2014 8:56 PM > To: Aissaoui, Mustapha (Mustapha); mpls@ietf.org > Cc: draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org; mpls- > chairs@tools.ietf.org; VIGOUREUX, MARTIN (MARTIN); Ross Callon; Jeffrey > (Zhaohui) Zhang; jeremy.whittaker@verizon.com > Subject: RE: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simpl= e-02 >=20 > Hello Mustapha, >=20 > Thank you for reviewing this document! >=20 > Let me provide my individual reply (not speaking for all the authors). >=20 > > -----Original Message----- > > From: Aissaoui, Mustapha (Mustapha) [mailto:mustapha.aissaoui@alcatel- > > lucent.com] > > Sent: Thursday, July 03, 2014 6:48 PM > > To: mpls@ietf.org > > Cc: draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org; mpls- > > chairs@tools.ietf.org; VIGOUREUX, MARTIN (MARTIN); Aissaoui, Mustapha > > (Mustapha); Ross Callon; Jeffrey (Zhaohui) Zhang; > > jeremy.whittaker@verizon.com > > Subject: RE: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode- > > simple-02 > > > > Dear all, > > I was asked to review this draft and I think it describes valid issues > > to be resolved. I however have a couple of comments about the way the > > authors went about to address them. > > > > 1. Relation to RFC 7110 - Return Path Specified Label Switched Path > > (LSP) Ping. > > Section 4.1 argues the reason why a separate reply mode is needed is > > for wanting to omit the Reply Path TLV defined in RFC 7110 when the > > sender of the echo request just wanted to use the return path of the > > tested LSP. I do not see this as a strong justification. In many > > cases, the LSP is unidirectional or the responder node is a transit > > LSR and may not be able to inject the reply in the reverse direction > > of that LSP. In that case, I can see that providing a specific return > > LSP which is different than the tested LSP is required and the Reply Pa= th TLV is > needed. > > > > Assuming this is still an important issue for the authors, I would > > suggest to relax the rule in RFC 7110 such that if the echo request > > includes reply mode > > 5 "Reply via Specified Path" and the Reply Path TLV is not included, > > the responder node will interpret this as an implicit request to reply > > via the reverse direction of the tested LSP. >=20 > If that's more desired by the WG, I have no objection to that as long as = it doesn't > require a TLV to indicate reverse LSP :) >=20 > > > > 2. Reply Mode Order TLV > > I am not convinced of the need for this TLV. There is not much reply > > modes which are usable today together. Only reply mode 2 can be > > concurrently used with reply mode 5 in RFC 7110 or reply mode 4. Reply > > mode 3 is not very popular as far as I know. Also, most applications > > would reply with mode 2 if the requested mode is not available. So, I > > can't see how this new TLV will be useful in practice. >=20 > You are absolutely correct, not all combinations of the reply modes in th= e Reply > Mode TLV is realistic. >=20 > Value Meaning > ----- ------- > 1 Do not reply > 2 Reply via an IPv4/IPv6 UDP packet > 3 Reply via an IPv4/IPv6 UDP packet with Router Alert > 4 Reply via application level control channel > 5 Reply via Specified Path > 6 Reply via reverse LSP >=20 > Ping is simple, but let's talk about traceroute. >=20 > I can imagine following example usage: >=20 > (1) User prefers IP return path: >=20 > If (LSP_w_reverse_LSP) { > ReplyModeTLV{2, 6} > } else if (LSP_w_control_channel) { > ReplyModeTLV{2, 4} > } else { > ReplyMode{2} > } >=20 > (2) User does not prefer IP return path: >=20 > If (LSP_w_reverse_LSP) { > ReplyModeTLV{6, 2} > } else if (LSP_w_control_channel) { > ReplyModeTLV{4, 2} > } else { > ReplyMode{2} > } >=20 > Or user can specify a preference to be used for all LSP types (those who = wants to > make sure response is received back one way or another). >=20 > (3) User prefers IP return path: >=20 > If (all_LSP_types) { > ReplyModeTLV{2, 6, 4} > } else { > ReplyMode{2} > } >=20 > (4) User does not prefer IP return path: >=20 > If (all_LSP_types) { > ReplyModeTLV{4, 6, 2} > } else { > ReplyMode{2} > } >=20 > I hope this answers your comments/concerns a bit :) >=20 > Thanks! >=20 > -Nobo >=20 > > > > Regards, > > Mustapha. From nobody Fri Jul 4 10:21:34 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 06BA51B2B22 for ; Fri, 4 Jul 2014 10:21:30 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -115.152 X-Spam-Level: X-Spam-Status: No, score=-115.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 7ZWxV6-j8Ig8 for ; Fri, 4 Jul 2014 10:21:28 -0700 (PDT) Received: from rcdn-iport-2.cisco.com (rcdn-iport-2.cisco.com [173.37.86.73]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 24B811B2B11 for ; Fri, 4 Jul 2014 10:21:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=7099; q=dns/txt; s=iport; t=1404494488; x=1405704088; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=FFyMTqRNFvR91Y7ih+2GH5ulcZJLwGoHu4FI2tIn1VE=; b=bJNpkQWbWA5+WCOeH5eCEj19NNHz8H4Sm2mKIgRkwVp6kYsFLG6PEYNw jE9LQbdoQ/0ZjsXHv0H5y+0x+yluK1gPDAg2a3nGnPuP4lBJmU77JLuGo Ik3C5bQRmCuRDbDaTQAkaPr5/mTDxdOiLOOHbrN5SCAzYUUNPTphlgiyD s=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AhYFAJbhtlOtJV2a/2dsb2JhbABagmokUlrGKwGBCxZ1hAMBAQEDATo4BwUHBAIBCBEEAQELFAkHMhQJCAEBBAENBQiIJgMJCAHKWheMeoF3MQcGgyeBFgEEllyFYpJEg0OBbgc7 X-IronPort-AV: E=Sophos;i="5.01,602,1400025600"; d="scan'208";a="337782644" Received: from rcdn-core-3.cisco.com ([173.37.93.154]) by rcdn-iport-2.cisco.com with ESMTP; 04 Jul 2014 17:21:27 +0000 Received: from xhc-rcd-x02.cisco.com (xhc-rcd-x02.cisco.com [173.37.183.76]) by rcdn-core-3.cisco.com (8.14.5/8.14.5) with ESMTP id s64HLR0S011301 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Fri, 4 Jul 2014 17:21:27 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-rcd-x02.cisco.com ([173.37.183.76]) with mapi id 14.03.0123.003; Fri, 4 Jul 2014 12:21:26 -0500 From: "Nobo Akiya (nobo)" To: "Aissaoui, Mustapha (Mustapha)" , "mpls@ietf.org" Thread-Topic: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 Thread-Index: Ac+Kbg0JI45wiuB+QkmRpWOTfjvnXAAAEROQAn/CxAAArCcJUAAhdPpQAAG2acA= Date: Fri, 4 Jul 2014 17:21:26 +0000 Message-ID: References: <4A79394211F1AF4EB57D998426C9340D946A9035@US70UWXCHMBA01.zam.alcatel-lucent.com> <4A79394211F1AF4EB57D998426C9340D946C86F6@US70UWXCHMBA01.zam.alcatel-lucent.com> <4A79394211F1AF4EB57D998426C9340D946C8F07@US70UWXCHMBA01.zam.alcatel-lucent.com> In-Reply-To: <4A79394211F1AF4EB57D998426C9340D946C8F07@US70UWXCHMBA01.zam.alcatel-lucent.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [161.44.212.73] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/QWdJ00dLkmDVqjzwMAQUnle1inU Cc: "Jeffrey \(Zhaohui\) Zhang" , "draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org" , Ross Callon , "mpls-chairs@tools.ietf.org" , "jeremy.whittaker@verizon.com" Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Jul 2014 17:21:30 -0000 Hi Mustapha, > -----Original Message----- > From: Aissaoui, Mustapha (Mustapha) [mailto:mustapha.aissaoui@alcatel- > lucent.com] > Sent: Friday, July 04, 2014 12:40 PM > To: Nobo Akiya (nobo); mpls@ietf.org > Cc: draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org; mpls- > chairs@tools.ietf.org; VIGOUREUX, MARTIN (MARTIN); Ross Callon; Jeffrey > (Zhaohui) Zhang; jeremy.whittaker@verizon.com > Subject: RE: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode- > simple-02 >=20 > Hi Nobo, > Regarding the combinations of reply modes, my point is that usually type = 2 > is treated as the default mode which the responder node will usually > attempt if say type 4 or type 5 were requested in the echo request messag= e > but were not available. LSP ping/trace is design such that behavior is strictly controlled by the i= nitiator. I'd say any behavior which the responder does not comply to the i= nstruction in received MPLS echo request and starts to decide its own behav= ior on reply contents or how to reply is a bad idea. > What would be a use case where you want to prefer > type 2 over types 4 or 5? > I would have thought the latter being very specific > return paths, the user would first try them and in case they are not avai= lable > then resort to type 2. Not the other way around. Ask operators :) There are some operators who prefer (2 > (4 or 5)) and there are some opera= tors who prefer ((4 or 5) > 2). This is exactly one of the items which lead the authors to coming up with t= his document. >=20 > Also, do you have a use case for requesting types 4 and 5 together for th= e > same target FEC stack? I would have thought these not to be compatible. F= or > example, type 4 could be the return path of the tested PW but the > responder node would not normally use type 5 and send the reply to the > VCC ping using some other LSP. Correct. Whether 4 or 5 can be used is LSP dependant, meaning the tool or u= ser have to know that. For those users who are only concerned about ping/tr= ace succeeding in the forward path, users can configure (5, 4, 2) (or whate= ver) and tools can default to that for all LSP types, ping or trace or ping= w/ specific TTL. Thanks! -Nobo >=20 > Mustapha. >=20 > > -----Original Message----- > > From: Nobo Akiya (nobo) [mailto:nobo@cisco.com] > > Sent: Thursday, July 03, 2014 8:56 PM > > To: Aissaoui, Mustapha (Mustapha); mpls@ietf.org > > Cc: draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org; mpls- > > chairs@tools.ietf.org; VIGOUREUX, MARTIN (MARTIN); Ross Callon; > > Jeffrey > > (Zhaohui) Zhang; jeremy.whittaker@verizon.com > > Subject: RE: MPLS-RT review of > > draft-akiya-mpls-lsp-ping-reply-mode-simple-02 > > > > Hello Mustapha, > > > > Thank you for reviewing this document! > > > > Let me provide my individual reply (not speaking for all the authors). > > > > > -----Original Message----- > > > From: Aissaoui, Mustapha (Mustapha) > > > [mailto:mustapha.aissaoui@alcatel- > > > lucent.com] > > > Sent: Thursday, July 03, 2014 6:48 PM > > > To: mpls@ietf.org > > > Cc: draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org; > > > mpls- chairs@tools.ietf.org; VIGOUREUX, MARTIN (MARTIN); Aissaoui, > > > Mustapha (Mustapha); Ross Callon; Jeffrey (Zhaohui) Zhang; > > > jeremy.whittaker@verizon.com > > > Subject: RE: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode- > > > simple-02 > > > > > > Dear all, > > > I was asked to review this draft and I think it describes valid > > > issues to be resolved. I however have a couple of comments about the > > > way the authors went about to address them. > > > > > > 1. Relation to RFC 7110 - Return Path Specified Label Switched Path > > > (LSP) Ping. > > > Section 4.1 argues the reason why a separate reply mode is needed is > > > for wanting to omit the Reply Path TLV defined in RFC 7110 when the > > > sender of the echo request just wanted to use the return path of the > > > tested LSP. I do not see this as a strong justification. In many > > > cases, the LSP is unidirectional or the responder node is a transit > > > LSR and may not be able to inject the reply in the reverse direction > > > of that LSP. In that case, I can see that providing a specific > > > return LSP which is different than the tested LSP is required and > > > the Reply Path TLV is > > needed. > > > > > > Assuming this is still an important issue for the authors, I would > > > suggest to relax the rule in RFC 7110 such that if the echo request > > > includes reply mode > > > 5 "Reply via Specified Path" and the Reply Path TLV is not included, > > > the responder node will interpret this as an implicit request to > > > reply via the reverse direction of the tested LSP. > > > > If that's more desired by the WG, I have no objection to that as long > > as it doesn't require a TLV to indicate reverse LSP :) > > > > > > > > 2. Reply Mode Order TLV > > > I am not convinced of the need for this TLV. There is not much reply > > > modes which are usable today together. Only reply mode 2 can be > > > concurrently used with reply mode 5 in RFC 7110 or reply mode 4. > > > Reply mode 3 is not very popular as far as I know. Also, most > > > applications would reply with mode 2 if the requested mode is not > > > available. So, I can't see how this new TLV will be useful in practic= e. > > > > You are absolutely correct, not all combinations of the reply modes in > > the Reply Mode TLV is realistic. > > > > Value Meaning > > ----- ------- > > 1 Do not reply > > 2 Reply via an IPv4/IPv6 UDP packet > > 3 Reply via an IPv4/IPv6 UDP packet with Router Alert > > 4 Reply via application level control channel > > 5 Reply via Specified Path > > 6 Reply via reverse LSP > > > > Ping is simple, but let's talk about traceroute. > > > > I can imagine following example usage: > > > > (1) User prefers IP return path: > > > > If (LSP_w_reverse_LSP) { > > ReplyModeTLV{2, 6} > > } else if (LSP_w_control_channel) { > > ReplyModeTLV{2, 4} > > } else { > > ReplyMode{2} > > } > > > > (2) User does not prefer IP return path: > > > > If (LSP_w_reverse_LSP) { > > ReplyModeTLV{6, 2} > > } else if (LSP_w_control_channel) { > > ReplyModeTLV{4, 2} > > } else { > > ReplyMode{2} > > } > > > > Or user can specify a preference to be used for all LSP types (those > > who wants to make sure response is received back one way or another). > > > > (3) User prefers IP return path: > > > > If (all_LSP_types) { > > ReplyModeTLV{2, 6, 4} > > } else { > > ReplyMode{2} > > } > > > > (4) User does not prefer IP return path: > > > > If (all_LSP_types) { > > ReplyModeTLV{4, 6, 2} > > } else { > > ReplyMode{2} > > } > > > > I hope this answers your comments/concerns a bit :) > > > > Thanks! > > > > -Nobo > > > > > > > > Regards, > > > Mustapha. From nobody Fri Jul 4 11:12:41 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 618111B2DED for ; Fri, 4 Jul 2014 11:12:38 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -115.152 X-Spam-Level: X-Spam-Status: No, score=-115.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id nZCVfg3htLv8 for ; Fri, 4 Jul 2014 11:12:35 -0700 (PDT) Received: from alln-iport-4.cisco.com (alln-iport-4.cisco.com [173.37.142.91]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id EE33C1B2DBA for ; Fri, 4 Jul 2014 11:12:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=8239; q=dns/txt; s=iport; t=1404497556; x=1405707156; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=TJgrXmIv8kcKDBPx9HwCgKfy5FQJPkkJg2dPDIjle1c=; b=Zx8v4pSodeFAKIJkNnFYJ3YHLt2HKlw+i83Z+2FaNZin2VviKV6HBw+h +uZTbI9SxojNimYqPSj/bTU0fLA9YFI38HZKMTYteG9p6VR5Y4I69I3fw EZbZNOaI63o9EVtGfYQAw2o/xncEnRj9sKP/98edhUkVrr9OR/+wXmDdJ 4=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AhQFAFDttlOtJA2N/2dsb2JhbABagmokgSzGKwGBCxZ1hAMBAQEDASdSBQsCAQgiJDIlAgQODROIHwgBylsXjnExB4MtgRYBBIoXjEWYJoNDgjA X-IronPort-AV: E=Sophos;i="5.01,602,1400025600"; d="scan'208";a="58392601" Received: from alln-core-8.cisco.com ([173.36.13.141]) by alln-iport-4.cisco.com with ESMTP; 04 Jul 2014 18:12:35 +0000 Received: from xhc-rcd-x10.cisco.com (xhc-rcd-x10.cisco.com [173.37.183.84]) by alln-core-8.cisco.com (8.14.5/8.14.5) with ESMTP id s64ICXic012616 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Fri, 4 Jul 2014 18:12:33 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-rcd-x10.cisco.com ([173.37.183.84]) with mapi id 14.03.0123.003; Fri, 4 Jul 2014 13:12:33 -0500 From: "Nobo Akiya (nobo)" To: Sam Aldrin Thread-Topic: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 Thread-Index: Ac+Kbg0JI45wiuB+QkmRpWOTfjvnXAAAEROQAn/CxAAAtFWXAAAHKr7g///9lQD//1TMQA== Date: Fri, 4 Jul 2014 18:12:32 +0000 Message-ID: References: <4A79394211F1AF4EB57D998426C9340D946A9035@US70UWXCHMBA01.zam.alcatel-lucent.com> <4A79394211F1AF4EB57D998426C9340D946C86F6@US70UWXCHMBA01.zam.alcatel-lucent.com> <9EB527EE-2C56-405D-9340-88A3184A48CA@gmail.com> <3ECD02EE-71E6-4AC5-BBB5-CC0C354219B0@gmail.com> In-Reply-To: <3ECD02EE-71E6-4AC5-BBB5-CC0C354219B0@gmail.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [161.44.212.73] Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/V1PuMqv531AR8ZhfMyCJ1cF2Zzw Cc: "mpls@ietf.org" , "Jeffrey \(Zhaohui\) Zhang" , Ross Callon , "draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org" , "mpls-chairs@tools.ietf.org" , "jeremy.whittaker@verizon.com" Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Jul 2014 18:12:38 -0000 Hi Sam, > In the Introduction it says > "However, it is becoming increasingly difficult for an initiator to > =A0=A0select a valid return path to encode in the MPLS LSP echo request > =A0=A0packets. =A0If the initiator does not select a valid return path, t= he > =A0=A0MPLS LSP echo reply will not get back to the initiator. =A0This res= ults > =A0=A0in a false failure of MPLS LSP Ping and Traceroute operation. =A0In= an > =A0=A0effort to minimize such false failures, different implementations > =A0=A0have chosen different default return path encoding for different LS= P > =A0=A0types and LSP operations. =A0The problem with implementations havin= g > =A0=A0different default return path encoding is that the MPLS echo reply > =A0=A0will not work in many cases, and the default value may not be the > =A0=A0preferred choice by the operators. > " >=20 > The problems I have is regarding the need for this ID are 1. Can we solve= the > problem without the need for this ID/solution? Answer is yes, albeit it t= akes > one or more requests. If you say, it is solving a problem which was could= n't > be solved earlier, I would like to see. >=20 > The problem can be addressed with vendors iterating the operation with > multiple Return Paths when the previous try didn't work. > And exact behavior being well document and operators fully understanding > potentially different behavior per LSP types, per ping/trace operation ty= pe > and deviating behaviors across multiple vendors/products. If you > implement this, with user preference knob (yes some prefers IP return pat= h > while other do not prefer IP return path), imagine yourself trying to exp= lain > to users how things work, and imagine yourself trying to explain why > vendors/products behave differently. I sure wouldn't want to :) It's inde= ed > not a problem that cannot be solved, but it's an aspect of LSP Ping/Trace= that > can be simplified in terms of implementations and especially operations! > %sam - You say it didn't work. Could you provide info why it didn't work?= In > the last sentence you say it simplifies. So does it simplify or is it fix= ing > something which was not working earlier? Perhaps the right thing to say is, it doesn't work with one MPLS echo reque= st message today. Sure the initiating device can, automatically or user ini= tiated, issue 2 or 3 MPLS echo request to the same target, cycling through = list of Reply Modes. With the change, it now works with one MPLS echo reque= st message, and it is simplified because you only need one MPLS echo reques= t vs. few that you needed before. > LSP ping itself is full of knobs and it has to be explained. You could fi= nd that > in every vendors documentation and it is nothing knew. I know it because = I > have authored much of the documentation. Yup, I am well aware of that Sam, and which is why this discussion is so wo= rth the effort! I am hoping, one of these replies, I'll get a message saying "yes this is a= reasonable extension" :) > 5. With the proposed solution, to determine the problem, one also needs t= o > read the 'reply mode' used by the replying device. IOW, return code + rep= ly > mode used will actually define the behavior. This changes the definition = of > RFC4379. 6. Specific to the text above, I do not agree that the problem i= s due > to implementation. It is the user choice which ever reply mode he/she > wants to use. If using CLI, could chose different reply mode. If it is > application, he/she could select it there. >=20 > User prefers control channel for operations on TP tunnels. >=20 > traceroute mpls ... [default reply mode 4 used] >=20 > Timeout > Timeout > Timeout > Timeout > ... > Success >=20 > Operator: What the heck! >=20 > <20 minutes later> >=20 > Operator: Oh man, there is no problem! This is tunnel 100 and is not 200,= it's > not co-routed! >=20 > Just an example :) >=20 > If possible (and yes it is), the tool should provide better experience to= users. > Here is a counter example and response to your example, below. >=20 > traceroute mpls .[new tlv - reply mode 5, 2] /* reply mode 5 or 4, I am j= ust > illustrating with 5 here */ >=20 > success > success > success > success >=20 > 1hr later, oh shoot, return path is broken but I am getting success becau= se > replies are in the ip path and not on reverse LSP. >=20 > this is much more harmful than not receiving reply. No no no, the output should be: success [Reply Mode: IPv4 UDP] success [Reply Mode: IPv4 UDP] success [Reply Mode: IPv4 UDP] success [Reply Mode: application level control channel] So that it's obvious to users that what is working and what is not working. Maybe not exactly in that output format, but you get the idea. And with that, there is absolutely no harm, rather you are providing much m= ore information back to the user than what is available today. Not to mention the command will finish right away instead of waiting [timeo= ut] from every LSR. Imagine if this was an application running the command, do you really want = the application to take 5 seconds or few tens of milliseconds? And do you w= ant the application to run the same command again to get the information wh= ich would've been possible to get in the first try? >=20 > And to your example, few very important points I'd like to make > 1. getting a timeout is not an issue, when lsp ping command is incorrectl= y > issued. Infact it is correct. No one can set that right, when user issues= wrong > command. How "timeout" contributes to the usability has been answered above. > 2. What I fail to understand is, how does your proposed solution make it > right? Just because you get the reply all is well? what if the return pat= h is > indeed broken (as illustrated in my example above), you will not be able = to > infer something is wrong, (strictly interpreting RFC4379) because return > code received is '3/8/5/6'. Ok this one is already answered above as well. > 3. Specific to your example, when you perform trace on non-corouted TP > tunnels, timeout SHOULD be returned when there is no return lsp for in > band reply from p1 and p2, because the return path chosen is 'reply mode = 4'. > In order to give 'better experience' what command will you issue and how > different the o/p will be, assuming there is no ip on intermediate nodes.= (p1, > p2,p3,p4) Sample topology below No, it's not the timeout that user is interested in seeing. If control channel is preferred: - responder uses the control channel. If timeout is seen with this, then th= at's a good thing (as you indicated, and I fully agree). - if there is no control channel at the responder node, then that should be= notified by the responder to the initiator via alternate path (instead of = just timing out). >=20 > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0/----P1--P2---\ > PE1--- =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 = =A0 =A0 =A0 =A0 PE2 > =A0 =A0 =A0 =A0 =A0 =A0 =A0 \----P3--P4-----/ >=20 > PE1->PE2 lsp is via p1, p2 > PE2->PE1 lsp is via p4,p3 >=20 >=20 >=20 >=20 > The point is, why to introduce this optimization solution, where one coul= d > solve the problem without any of this new upgrade? If you are saying don't introduce extension to improve the tool because the= re's a way to do the same even if that's inefficient, then there isn't much= more I can say. However, I do believe in a good extension if inefficiency = can be made efficient. > Alternatively, for ex: If the reply was being received with reply mode '5= , but > now I don't receive it now, send a new request with reply mode 1. This is > more simple than the proposed solution without needing any change. > I'd be open to hearing the strong reason, this ID is solving, which could= n't be > solved with RFC4379. >=20 > Why would you send reply mode 1 (Do no reply) if reply mode 5 (Reply via > Specified Path) starts timing out? That sounds a very silly, but maybe I'= m > missing something. > typo. Meant to say reply mode 2. Ah lol. Thanks! -Nobo From nobody Fri Jul 4 15:40:30 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 4886B1A01BA; Fri, 4 Jul 2014 15:40:27 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id k58B7uTQ3N5i; Fri, 4 Jul 2014 15:40:25 -0700 (PDT) Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id B33801A017F; Fri, 4 Jul 2014 15:40:25 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: i-d-announce@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 5.6.0.p1 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <20140704224025.4253.72163.idtracker@ietfa.amsl.com> Date: Fri, 04 Jul 2014 15:40:25 -0700 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/3Vp1ekGvLKZJLjiC-B36F3ZnMo4 Cc: mpls@ietf.org Subject: [mpls] I-D Action: draft-ietf-mpls-ldp-ipv6-13.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Jul 2014 22:40:27 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF. Title : Updates to LDP for IPv6 Authors : Rajiv Asati Vishwas Manral Rajiv Papneja Carlos Pignataro Filename : draft-ietf-mpls-ldp-ipv6-13.txt Pages : 22 Date : 2014-07-04 Abstract: The Label Distribution Protocol (LDP) specification defines procedures to exchange label bindings over either IPv4, or IPv6 or both networks. This document corrects and clarifies the LDP behavior when IPv6 network is used (with or without IPv4). This document updates RFC 5036. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-ldp-ipv6/ There's also a htmlized version available at: http://tools.ietf.org/html/draft-ietf-mpls-ldp-ipv6-13 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-ldp-ipv6-13 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Sat Jul 5 00:21:12 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id BB4691A0369 for ; Sat, 5 Jul 2014 00:21:10 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 0.3 X-Spam-Level: X-Spam-Status: No, score=0.3 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, MANGLED_MEDS=2.3, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id cHd7vNlmFKEY for ; Sat, 5 Jul 2014 00:21:09 -0700 (PDT) Received: from mail-pd0-x22f.google.com (mail-pd0-x22f.google.com [IPv6:2607:f8b0:400e:c02::22f]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2F9F91A035C for ; Sat, 5 Jul 2014 00:21:09 -0700 (PDT) Received: by mail-pd0-f175.google.com with SMTP id v10so2789840pde.6 for ; Sat, 05 Jul 2014 00:21:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=content-type:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=JzXy88m/A3DprTiFTyPFKaM8WljT+H07lgcVK1Iqxvs=; b=iNNEYaZjZD0pbhN0Q+NvPC/YsNzJBTtQQ0Q+WX1cVNmISJo7PAWqdUXs+Y/3JoAg6v 6Ygj+QJxRcn3M6PS4ki4L5vYkDvCMRGdvHYyfG3LzyzDdd6vb+Sx4z2au5bFtIY7MGFY UEZHoTziC4wjrbzBphfEL9OnvDkOJqTkCPxKXqDEOpnj8obdU4h73KsP/BNgUeMnrV98 89KQ8adxw1/It3juuxctYMO71vZ48y2lMdQzkYzSHnnkx0uNOfqXmVutQUke6cW1JKkj /3Q1k2xKdFMaiCUgN9hDZ9VoYL0Wul/hrB4MBpjoa4shZ0y+3KWIlP1vVxenLeLgiUgJ 1k5w== X-Received: by 10.66.146.199 with SMTP id te7mr833807pab.106.1404544868861; Sat, 05 Jul 2014 00:21:08 -0700 (PDT) Received: from [192.168.1.8] (c-107-3-154-60.hsd1.ca.comcast.net. [107.3.154.60]) by mx.google.com with ESMTPSA id st5sm32448725pbc.68.2014.07.05.00.21.07 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sat, 05 Jul 2014 00:21:08 -0700 (PDT) Content-Type: text/plain; charset=windows-1252 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) From: Sam Aldrin In-Reply-To: Date: Sat, 5 Jul 2014 00:21:04 -0700 Content-Transfer-Encoding: quoted-printable Message-Id: References: <4A79394211F1AF4EB57D998426C9340D946A9035@US70UWXCHMBA01.zam.alcatel-lucent.com> <4A79394211F1AF4EB57D998426C9340D946C86F6@US70UWXCHMBA01.zam.alcatel-lucent.com> <9EB527EE-2C56-405D-9340-88A3184A48CA@gmail.com> <3ECD02EE-71E6-4AC5-BBB5-CC0C354219B0@gmail.com> To: "Nobo Akiya (nobo)" X-Mailer: Apple Mail (2.1878.6) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/jYdw-O7ahh1AyNXopKpZNcjU_CU Cc: "mpls@ietf.org" , "Jeffrey \(Zhaohui\) Zhang" , Ross Callon , "draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org" , "mpls-chairs@tools.ietf.org" , "jeremy.whittaker@verizon.com" Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 05 Jul 2014 07:21:10 -0000 Hi Nobo, Thank you for the reply. Please find my replies inline. On Jul 4, 2014, at 11:12 AM, Nobo Akiya (nobo) wrote: > Hi Sam, >=20 >> In the Introduction it says >> "However, it is becoming increasingly difficult for an initiator to >> select a valid return path to encode in the MPLS LSP echo request >> packets. If the initiator does not select a valid return path, the >> MPLS LSP echo reply will not get back to the initiator. This = results >> in a false failure of MPLS LSP Ping and Traceroute operation. In = an >> effort to minimize such false failures, different implementations >> have chosen different default return path encoding for different = LSP >> types and LSP operations. The problem with implementations having >> different default return path encoding is that the MPLS echo reply >> will not work in many cases, and the default value may not be the >> preferred choice by the operators. >> " >>=20 >> The problems I have is regarding the need for this ID are 1. Can we = solve the >> problem without the need for this ID/solution? Answer is yes, albeit = it takes >> one or more requests. If you say, it is solving a problem which was = couldn't >> be solved earlier, I would like to see. >>=20 >> The problem can be addressed with vendors iterating the operation = with >> multiple Return Paths when the previous try didn't work. >> And exact behavior being well document and operators fully = understanding >> potentially different behavior per LSP types, per ping/trace = operation type >> and deviating behaviors across multiple vendors/products. If you >> implement this, with user preference knob (yes some prefers IP return = path >> while other do not prefer IP return path), imagine yourself trying to = explain >> to users how things work, and imagine yourself trying to explain why >> vendors/products behave differently. I sure wouldn't want to :) It's = indeed >> not a problem that cannot be solved, but it's an aspect of LSP = Ping/Trace that >> can be simplified in terms of implementations and especially = operations! >> %sam - You say it didn't work. Could you provide info why it didn't = work? In >> the last sentence you say it simplifies. So does it simplify or is it = fixing >> something which was not working earlier? >=20 > Perhaps the right thing to say is, it doesn't work with one MPLS echo = request message today. Sure the initiating device can, automatically or = user initiated, issue 2 or 3 MPLS echo request to the same target, = cycling through list of Reply Modes. With the change, it now works with = one MPLS echo request message, and it is simplified because you only = need one MPLS echo request vs. few that you needed before. As you can see, my argument, just like every other argument made at IETF = is, why one more extra option, when it already works, albeit with extra = request. Also this requires all nodes to be upgraded to supported to = fully functional as you describe. The extra cost is not worth it, when = you could achieve the same with small cost in workflow but no upgrade or = protocol/TLV change. >=20 >> LSP ping itself is full of knobs and it has to be explained. You = could find that >> in every vendors documentation and it is nothing knew. I know it = because I >> have authored much of the documentation. >=20 > Yup, I am well aware of that Sam, and which is why this discussion is = so worth the effort! > I am hoping, one of these replies, I'll get a message saying "yes this = is a reasonable extension" :) My anticipation is that we need not make this one more addition when = there is no real need and hope WG agrees with me :D Reason is, I feel is, cost outweigh any benefit it brings. More details = in the below responses. >=20 >> 5. With the proposed solution, to determine the problem, one also = needs to >> read the 'reply mode' used by the replying device. IOW, return code + = reply >> mode used will actually define the behavior. This changes the = definition of >> RFC4379. 6. Specific to the text above, I do not agree that the = problem is due >> to implementation. It is the user choice which ever reply mode he/she >> wants to use. If using CLI, could chose different reply mode. If it = is >> application, he/she could select it there. >>=20 >> User prefers control channel for operations on TP tunnels. >>=20 >> traceroute mpls ... [default reply mode 4 used] >>=20 >> Timeout >> Timeout >> Timeout >> Timeout >> ... >> Success >>=20 >> Operator: What the heck! >>=20 >> <20 minutes later> >>=20 >> Operator: Oh man, there is no problem! This is tunnel 100 and is not = 200, it's >> not co-routed! >>=20 >> Just an example :) >>=20 >> If possible (and yes it is), the tool should provide better = experience to users. >> Here is a counter example and response to your example, below. >>=20 >> traceroute mpls .[new tlv - reply mode 5, 2] /* reply mode 5 or 4, I = am just >> illustrating with 5 here */ >>=20 >> success >> success >> success >> success >>=20 >> 1hr later, oh shoot, return path is broken but I am getting success = because >> replies are in the ip path and not on reverse LSP. >>=20 >> this is much more harmful than not receiving reply. >=20 > No no no, the output should be: >=20 > success [Reply Mode: IPv4 UDP] > success [Reply Mode: IPv4 UDP] > success [Reply Mode: IPv4 UDP] > success [Reply Mode: application level control channel] >=20 > So that it's obvious to users that what is working and what is not = working. >=20 > Maybe not exactly in that output format, but you get the idea. >=20 > And with that, there is absolutely no harm, rather you are providing = much more information back to the user than what is available today. >=20 > Not to mention the command will finish right away instead of waiting = [timeout] from every LSR. >=20 > Imagine if this was an application running the command, do you really = want the application to take 5 seconds or few tens of milliseconds? And = do you want the application to run the same command again to get the = information which would've been possible to get in the first try? Usually, when ping fails, trace is used. Trace is not really used like = ping as it causes lot of extra traffic. and with network running with = huge number of LSP=92s and load balanced paths, trace is performed to = further diagnosed when ping fails. Having said that, two things we need to see. 1. What are the LSP types it will be really useful to have multiple = reply modes at the same time. Resp> At present, TP and PW are only LSP=92s which are bidirectional .=20= With PW VCCV, you cannot do trace for intermediate nodes anyway. So, = trace is not an option.=20 With TP, one could have IP enabled and non-ip enabled P routers With = non-IP enabled, you can only use reply mode 5(or 4, not sure what diff = vendors implemented). IOW, you cannot use reply mode 3 or 2. So, that leaves with TP LSP=92s with IP enabled P routers. And within = that, this is really useful only if the LSP=92s are non-corouted.=20 Let me know if which other LSP=92s missed out here. 2.=20 For the above trace example, in order for the output to receive = =91success' from all hops, you need to have all devices supporting this = TLV.=20 Let us take this, you send the this new TLV with reply modes [5,2], if = you receive all timeouts, what do you conclude? in-band reply mode is = broken + IP path also broken OR nodes do not support this TLV? >>=20 >> And to your example, few very important points I'd like to make >> 1. getting a timeout is not an issue, when lsp ping command is = incorrectly >> issued. Infact it is correct. No one can set that right, when user = issues wrong >> command. >=20 > How "timeout" contributes to the usability has been answered above. >=20 >> 2. What I fail to understand is, how does your proposed solution make = it >> right? Just because you get the reply all is well? what if the return = path is >> indeed broken (as illustrated in my example above), you will not be = able to >> infer something is wrong, (strictly interpreting RFC4379) because = return >> code received is '3/8/5/6'. >=20 > Ok this one is already answered above as well. >=20 >> 3. Specific to your example, when you perform trace on non-corouted = TP >> tunnels, timeout SHOULD be returned when there is no return lsp for = in >> band reply from p1 and p2, because the return path chosen is 'reply = mode 4'. >> In order to give 'better experience' what command will you issue and = how >> different the o/p will be, assuming there is no ip on intermediate = nodes.(p1, >> p2,p3,p4) Sample topology below >=20 > No, it's not the timeout that user is interested in seeing. >=20 > If control channel is preferred: > - responder uses the control channel. If timeout is seen with this, = then that's a good thing (as you indicated, and I fully agree). > - if there is no control channel at the responder node, then that = should be notified by the responder to the initiator via alternate path = (instead of just timing out). Solution is there and very simple. If there is IP reply path and no control channel as you say, just use = reply mode 2 for Trace and use reply mode =914=92 for Ping. Why is that a problem? If I am missing something here, could you clarify with real lsp example = and how this TLV is solving that existing solution is not able to, will = clarify things better. =20 >=20 >>=20 >> /----P1--P2---\ >> PE1--- PE2 >> \----P3--P4-----/ >>=20 >> PE1->PE2 lsp is via p1, p2 >> PE2->PE1 lsp is via p4,p3 >>=20 >>=20 >>=20 >>=20 >> The point is, why to introduce this optimization solution, where one = could >> solve the problem without any of this new upgrade? >=20 > If you are saying don't introduce extension to improve the tool = because there's a way to do the same even if that's inefficient, then = there isn't much more I can say. However, I do believe in a good = extension if inefficiency can be made efficient. That is where I disagree. what you say is efficient, is not true, = because of the cost this solution for this to work and that too only for = a corner case lsp type. We could debate this point, but I doubt we could converge on the = efficiency part. It is like the debate, more vs less. :D cheers -sam >=20 >> Alternatively, for ex: If the reply was being received with reply = mode '5, but >> now I don't receive it now, send a new request with reply mode 1. = This is >> more simple than the proposed solution without needing any change. >> I'd be open to hearing the strong reason, this ID is solving, which = couldn't be >> solved with RFC4379. >>=20 >> Why would you send reply mode 1 (Do no reply) if reply mode 5 (Reply = via >> Specified Path) starts timing out? That sounds a very silly, but = maybe I'm >> missing something. >> typo. Meant to say reply mode 2. >=20 > Ah lol. >=20 > Thanks! >=20 > -Nobo >=20 From nobody Sat Jul 5 05:56:52 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 901441A050E for ; Sat, 5 Jul 2014 05:56:50 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.551 X-Spam-Level: X-Spam-Status: No, score=-2.551 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.651] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id uNnDD7Ai8suB for ; Sat, 5 Jul 2014 05:56:47 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 025CC1A0505 for ; Sat, 5 Jul 2014 05:56:47 -0700 (PDT) Received: from [2.71.59.33] (2.71.59.33.mobile.tre.se [2.71.59.33]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 9E6901802B24; Sat, 5 Jul 2014 14:56:45 +0200 (CEST) Message-ID: <53B7F60D.3090004@pi.nu> Date: Sat, 05 Jul 2014 14:56:45 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: Yakov Rekhter , mpls@ietf.org, "mpls-chairs@tools.ietf.org" , "VIGOUREUX, MARTIN (MARTIN)" References: <201407021902.s62J2Un58570@magenta.juniper.net> In-Reply-To: <201407021902.s62J2Un58570@magenta.juniper.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/wxiFmDvDmXdIFFZrCVWg9zmltBA Subject: Re: [mpls] I-D Action: draft-ietf-mpls-seamless-mcast-14.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 05 Jul 2014 12:56:50 -0000 Working Group, Sorry for the late responses, I have a backlog after relocating for the summer back to Sweden. Yakov is right - all comments are addressed and the draft is ready for publication request. However there is one small caveat, the draft uses a IANA registry (based on advice from chairs and ADs) that is not yet in place. The new registry will be created based on draft-ietf-l3vpn-pmsi-registry which is in AD evaluation. I'd like to wait for the AD comments before sending the publication request for this draft. I hope I will be able to do that early next week. /Loa mpls co-chair On 2014-07-02 21:02, Yakov Rekhter wrote: > Folks, > > The revised version (-14) reflects all the comments received > during the WG LC. > > Yakov. > ------- Forwarded Message > > Date: Wed, 02 Jul 2014 11:10:00 -0700 > From: > To: > cc: > Subject: [mpls] I-D Action: draft-ietf-mpls-seamless-mcast-14.txt > > > A New Internet-Draft is available from the on-line Internet-Drafts directories. > This draft is a work item of the Multiprotocol Label Switching Working Group o > f the IETF. > > Title : Inter-Area P2MP Segmented LSPs > Authors : Yakov Rekhter > Rahul Aggarwal > Filename : draft-ietf-mpls-seamless-mcast-14.txt > Pages : 42 > Date : 2014-07-02 > > Abstract: > This document describes procedures for building inter-area point-to- > multipoint (P2MP) segmented service LSPs by partitioning such LSPs > into intra-area segments and using BGP as the inter-area routing and > label distribution protocol. Within each IGP area the intra-area > segments are either carried over intra-area P2MP LSPs, using P2MP LSP > hierarchy, or instantiated using ingress replication. The intra-area > P2MP LSPs may be signaled using P2MP RSVP-TE or P2MP mLDP. If ingress > replication is used within an IGP area, then (multipoint-to-point) > LDP LSPs or (point-to-point) RSVP-TE LSPs may be used in the IGP > area. The applications/services that use such inter-area service LSPs > may be BGP Multicast VPN, VPLS multicast, or global table multicast > over MPLS. > > > The IETF datatracker status page for this draft is: > https://datatracker.ietf.org/doc/draft-ietf-mpls-seamless-mcast/ > > There's also a htmlized version available at: > http://tools.ietf.org/html/draft-ietf-mpls-seamless-mcast-14 > > A diff from the previous version is available at: > http://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-seamless-mcast-14 > > > Please note that it may take a couple of minutes from the time of submission > until the htmlized version and diff are available at tools.ietf.org. > > Internet-Drafts are also available by anonymous FTP at: > ftp://ftp.ietf.org/internet-drafts/ > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > > ------- End of Forwarded Message > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Sat Jul 5 08:26:34 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 703771A0B05 for ; Sat, 5 Jul 2014 08:26:30 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -0.685 X-Spam-Level: X-Spam-Status: No, score=-0.685 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_FONT_FACE_BAD=0.981, HTML_MESSAGE=0.001, IP_NOT_FRIENDLY=0.334, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id jUr6nu_ntOKw for ; Sat, 5 Jul 2014 08:26:27 -0700 (PDT) Received: from gproxy6-pub.mail.unifiedlayer.com (gproxy6-pub.mail.unifiedlayer.com [67.222.39.168]) by ietfa.amsl.com (Postfix) with SMTP id 4CA571A0B08 for ; Sat, 5 Jul 2014 08:26:27 -0700 (PDT) Received: (qmail 14178 invoked by uid 0); 5 Jul 2014 15:26:24 -0000 Received: from unknown (HELO cmgw4) (10.0.90.85) by gproxy6.mail.unifiedlayer.com with SMTP; 5 Jul 2014 15:26:24 -0000 Received: from box313.bluehost.com ([69.89.31.113]) by cmgw4 with id NlSC1o00G2SSUrH01lSFpz; Sat, 05 Jul 2014 15:26:23 -0600 X-Authority-Analysis: v=2.1 cv=OcELUHjY c=1 sm=1 tr=0 a=h1BC+oY+fLhyFmnTBx92Jg==:117 a=tcnv99F1KMcA:10 a=zqHLjNqbk_wA:10 a=HFCU6gKsb0MA:10 a=wU2YTnxGAAAA:8 a=cNaOj0WVAAAA:8 a=-NfooI8aBGcA:10 a=uEJ9t1CZtbIA:10 a=r77TgQKjGQsHNAKrUKIA:9 a=9iDbn-4jx3cA:10 a=cKsnjEOsciEA:10 a=OL2PBTLkfaxC3BG2_xIA:9 a=oCPxG4c3oC-NghgG:21 a=qpmMj8mtTLQwsh6o:21 a=QEXdDO2ut3YA:10 a=3463uW3UAAAA:8 a=fO5YdYd42CcL8vAdCKQA:9 a=dfi9gUwGQP4ljbUr:21 a=3XlLnZWhqq-_Rh3e:21 a=zcfGFlIuNhHJS6MY:21 a=_W_S_7VecoQA:10 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=labn.net; s=default; h=Content-Type:In-Reply-To:References:Subject:CC:To:MIME-Version:From:Date:Message-ID; bh=L7g7tM0swGBUz9W39Tl1NMjgAHCo/TLXjzVUv9NZQ3A=; b=AJGpMRbGz/BeQibLUKeFKDRmzonnWUZTXWy41w0q2h781NN3vncDiCIbXPknzejy+c+ROULoMfY5EeXkjrVY3OeCMr9tEGVYcuRjcqNXMUywdDXnE0SlVauDNp2XhQsf; Received: from box313.bluehost.com ([69.89.31.113]:46310 helo=[127.0.0.1]) by box313.bluehost.com with esmtpa (Exim 4.82) (envelope-from ) id 1X3Rqv-0007Fu-34; Sat, 05 Jul 2014 09:26:13 -0600 Message-ID: <53B8190E.6080505@labn.net> Date: Sat, 05 Jul 2014 11:26:06 -0400 From: Lou Berger User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: Jeong Ryoo , "rtg-ads@tools.ietf.org" References: <53A5ABED.9080408@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28748144@SMTP2.etri.info> In-Reply-To: <5B4A6CBE3924BB41A3BEE462A8E0B75A28748144@SMTP2.etri.info> X-Enigmail-Version: 1.6 Content-Type: multipart/alternative; boundary="------------020809060909070305050609" X-Identified-User: {1038:box313.bluehost.com:labnmobi:labn.net} {sentby:smtp auth 69.89.31.113 authed with lberger@labn.net} Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/_wQ83KxPnLtKt7YDJ660XQusWrc Cc: "rtg-dir@ietf.org" , "draft-ietf-mpls-smp-requirements.all@tools.ietf.org" , "mpls@ietf.org" Subject: Re: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-smp-requirements-06.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 05 Jul 2014 15:26:30 -0000 This is a multi-part message in MIME format. --------------020809060909070305050609 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Jeong/Authors, Thank you for the response. Most of the changes look good. I still have a few questions and open comments. Please see below. Lou On 7/3/2014 8:52 PM, Jeong Ryoo wrote: > Dear Lou, > > > > Thanks a lot for your valuable comments. > > > > The authors of this draft have discussed your comments, and are > proposing our resolutions to your comments. Please, let us know if the > proposal is appropriate to address your comments and concerns. > > > > Best regards, > > > > Authors of draft-ietf-mpls-smp-requirements draft > > > > ****** Beginning of Comment Resolution ****** > > > > - Document's usage of "committed" vs "allocated" resources: > > In section 1 the document introduces the notion that the > distinction between protection and restoration is based on when > resources are "committed". This difference from past > definition. RFC4427 and 6372 make the distinction that protection > and restoration differ based on when resources are *allocated* not > *committed*. To quote RFC 4427: > > ... > > > > [Authors] After reviewing RFCs 4427, 6372, 3945, 4426, and 4428, we > concluded that the distinction between protection and restoration > should be aligned with the exiting documents normatively referenced by > this document. Accordingly, the following 16 modifications will be > done in revision: > ... (deleted changes looked fine.) > > > > > > (4) Page 7, the first paragraph: > > OLD: > > the resources for the protection path are fully committed, > > NEW > > the resources for the protection path are fully dedicated, > > > Dedicated is also an ambiguous term, how about: OLD the resources for the protection path are fully committed, the protection path in the case of SMP consists of segments that are dedicated to the protection of the related working path and also NEW the resources for the protection path are fully allocated, the protection path in the case of SMP consists of segments that are allocated to the protection of the related working path and also > OLD: > > resources may be planned but would not be committed until … > > NEW: > > resources may be planned but would not be utilized until … > How about: OLD resources may be planned but would not be committed until requested NEW resources may be allocated but would not be utilized until requested ... > > > (7) The second paragraph of Section 4.1: > > OLD: > > When the reserved resources of the shared segments are committed to a > > particular protection path, there may not be sufficient resources > > available for an additional protection path. This then implies that > > if another working path of the SMP domain triggers a protection > > switch, the commitment of the resources may fail. In order to > > optimize the operation of the commitment and preparing for cases of > > multiple working paths failing, the commitment of the shared > > resources are be coordinated between the different working paths in > > the SMP network. > > NEW: > > When the reserved resources of the shared segments are utilized by a > > particular protection path, there may not be sufficient resources > > available for an additional protection path. This then implies that > > if another working path of the SMP domain triggers a protection > > switch, the resource utilization coordination may fail. The different > working paths in > > the SMP network are involved in the resource utilization coordination. > > . > This is fine, but I wonder why you are using "resource utilization" vs "protection switch"? (this is actually a bit of a general comment -- I the latter is an existing applicable term that would help readers how this document fits in to the technology space.) ... > > > > > > (12) Section 5.2, the third bullet item: > > OLD: > > If multiple protection paths of equal priority are requesting > > allocation of the shared resources, the resources SHOULD be > > committed on a first come first served basis. > > NEW: > > If multiple protection paths of equal priority are requesting > > the shared resources, the resources SHOULD be > > assigned on a first come first served basis. > why use a new term "assigned" vs the previous term "utilized"? If there is no distinction being made the same term should be used (either term is fine, but choose one). If there is a distinction, it should be made explicit (i.e., explained). > > > (13) Section 5.2, the fourth bullet item: > > OLD: > > If the protection resources are committed to a protection path, > > whose working path has a lower priority, resources required for > > the higher priority path SHALL be committed to the higher priority > > path. > > NEW: > > If the protection resources are utilized by a protection path, > > whose working path has a lower priority, resources required for > > the higher priority path SHALL be assigned to the higher priority > > path. > > > > > same comment. ... > > > > > - Section 2, 1st paragraph, last sentence. This sentence really defines > the scope/purpose of the document, i.e., "clarifies the instructions > to protocol designers producing solutions that satisfy the > requirements set out in this document." As such, I'd repeat this in > the abstract and move it to a more pronounced place in section 1 (or > 3). > > [Authors] We can add the following paragraph at the end of Section 1: > > “This document is intended to clarify the instructions to protocol > designers producing solutions that satisfy the requirements set out in > this document.†> > > > How about being even more explicit (in both the abstract and section 1): This document provides requirements for any mechanism that would be used to implement SMP for MPLS-TP data paths, in networks that delegate protection switch coordination to the data plane. > - General comment: fate-sharing for co-routed bidirectional LSP > protection: How is co-routing preserved for the reverse path in SMP? > I'd assumed the protection switch coordination protocol would be > required to trigger a switchover of the reverse LSP in the co-routed > case, but don't see this in the document. > > [Authors] Fate-sharing is not required by this document. Even in the > PSC linear protection switching, such as RFC 6378 (PSC) and RFC 7271 > (PSC in APS mode), fate-sharing is not required as unidirectional > switching is allowed. This document does not impose any restriction on > co-routing, either. > > > Both RFC4427 and 6372 mention this (Bi-directional recovery switching in the former). I think this document really needs to mention something on the topic. Given the 6372 a "MAY" level requirement is probably sufficient, but this should be confirmed with the WG. (I personally would like SHOULD as this seems to better match 6372's text "operator often requires...".) > > - In section 4 and 5.2 you reference 5712 and 3209 as defining > preemption terminology and behavior. I think 6372 is the right > reference here as it defines both in the context of survivability and > in dependent of control plane. > > [Authors] One concern is that RFC 6372 describes both soft and hard > preemptions in the context of extra traffic, which is not exactly the > case for SMP. > Then 6372 should be referenced and the difference should be described. Otherwise readers are likely to think you just used the wrong reference and that 6372's text applies. 6372 is after all titled "MPLS-TP Survivability Framework"... > > > > - In section 4.2 you say "Therefore, it is suggested that this be > carried out under the control of a dynamic control plane similar to > GMPLS [RFC3945]." perhaps you mean "based on GMPLS"? If so, great, > please make the correction. If not, I think the debate of which > control protocol is used for MPLS-TP is way beyond the scope of this > document. > > [Authors] Yes, we will make the correction. > okay > > > > > - Section 5.1, paragraph 1. Why are you using "SHOULD NOT" here? If > referring to solutions conformant with this document, then these are > informative statements, "and a non-control plane based SMP switchover > mechanism is used, the control plane SHALL NOT ...". If referring to > an operator's/user's choice of protection mechanism, I think the most > you can say is MAY. > > [Authors] The first case is the one we are aiming at. We will use > SHALL NOT. > > > > okay. > > - Section 5.2. "Tie-breaking rules SHALL be defined in scope of an SMP > domain." As this is a requirement, what you mean by "tie-breaking > rules" should be defined directly or by reference. > > [Authors] The sentence can be rewritten as: > > OLD: > > Tie-breaking rules SHALL be defined in scope of an SMP domain. > > NEW: > > In order to cover the situation where the first come first served > principle cannot resolve the contention among multiple equal priority > requests, i.e., when the requests occur simultaneously,, tie-breaking > rules SHALL be defined in scope of an SMP domain. > > > > > good enough (i.e., states that the definition of tie-breaking is FFS.) > > - Section 5.3. RFC6372 takes an approach where preemption notification > leverages the standard MPLS-TP OAM mechanisms, is there any reason to > do more / not just follow 6372? > > [Authors] We can add the following sentence at the end: > > “As described in [RFC6372], the event of preemption may be detected by > OAM and reported as a fault or a degradation of traffic delivery.†> okay. > > > - Section 5.7. There may be coordination required on soft-preemption as > well (depending on the cross-connects established during LSP > establishment) so coordinated switching should be supported > independent of preemption mode. > > [Authors] Yes, we will change the second paragraph from “SMP in > hard-preemption mode SHOULD …†to “SMP SHOULD …†and move the changed > paragraph above the first paragraph. > > > > > Nits: > > - Abstract: I don't recall the term "executive action" being used in any > earlier related/referenced RFCs. Rather than introduce a new (and > undefined) term, perhaps you can use an existing one, e.g., > "protection switch"? > > [Authors] Yes, the term will be changed as you suggested. > > > > great. > > - Section 1, paragraph 1. Do we really need another definition of > MPLS-TP to debate? I suggest just referencing your favorite MPLS-TP > document(s) and dropping the first four sentences. > > The last sentence also makes a subjective statement. Whether it is > critical or no is unnecessary. You can just say something like 6372 > provides a survivability framework for MPLS-TP and is the foundation > for this document. > > [Authors] The proposed text for the paragraph 1 is: > > “The MPLS Transport Profile (MPLS-TP) is described in [RFC5921], > > and [RFC6372] provides a survivability framework for MPLS-TP > > and is the foundation for this document.†> > > okay. > > > - Section 1, paragraph 3. Isn't the right reference 4427 not 4428? > Also drop the word linear, as it is an unnecessary qualifier and > 4427/4428 don't use it. > > [Authors] OK. > > > > > > > - Sections 3 (and to a lesser degree section 2) are really introductory > text. I'm unsure as to why they aren't part of section 1. > > [Authors] Section 3 was intended to present a reference model for SMP. > Some text of Section 2 is repeated in Section 1 as you suggested earlier. > > > We're in the domain of style, so is your call. > > > > > - Section 3.2 should have a reference for "existing control plane > solutions for SMP within MPLS". > > [Authors] [RFC4206] will be added as a reference > > > - Section 3.2 again uses the "executive action" term. > > [Authors] OK, the term will be changed. > > > > > - Section 4.1. You say "two operations simultaneously". Do you really > mean "simultaneously" or merely that they must both occur for > protection to be provided? (Same comment in section 5.1. > > [Authors] Both actions should occur at the same time, or as closely as > possible to provide fast protection. > > > What text change is planned? > > - Section 5.2. I suggest numbering the currently bulletted requirements > list. > > [Authors] OK, we will use numbers. > > > > > - Section 5.2: First paragraph and forth bullet last sentence. These > both basically cover the same topic (preemption) and actually say > slightly different things. I suggest combine into a single > requirement to ensure consistency and full coverage of the topic. > > [Authors] The first paragraph is for soft-preemption, while the fourth > bullet belongs to the requirements of hard-preemption. > Do you plan a text change? (the 1st paragraph should be a list item and soft-preemption is mentioned as a parenthetical , and the forth doesn't mention its scope as hard preemption.) > > - Section 5.2, req 5. How does this relate to section 5.5? Shouldn't > the topics related to timing be consolidated? > > [Authors] Yes, req 5 can be moved to Section 5.5. > > > okay. > > - Section 5.2: requirement 6 seems to be a subset of 7, so it should be > dropped. > > [Authors] Yes, it will be deleted. > > great. > > - Section 5.2, requirement 8. Isn't this a subset of 9? Why call out > just this one traffic treatment (sub) requirement? > > [Authors] Req. 9 will be deleted as it seems to require control plane > supports. > > > > - Section 5.3. s/MAY/will > > [Authors] OK. > > > > > - section 5.4: " When the working path detects.." detection is by the > node not the path. > > [Authors] Yes. We will simply say that “When the condition that > triggered the protection switching is cleared, …†> > > - Section 5.4, last sentence. This is only the 2nd time you imply that > the document covers requirements on a new protocol. I think this > point is currently too subtle in the document. (This point was also > made as a minor comment.) > > [Authors] As in other protection switching technologies, two modes of > operations (revertive and non-revertive) are required. > > > > > - section 5.6. RFC 6372 should be referenced > > [Authors] We will add “as described in [RFC6372]†to the ends of two > paragraphs for WTR timer and hold-off timer. > > > Okay. > ***** End of Comment resolution ***** > ... --------------020809060909070305050609 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit Jeong/Authors,
    Thank you for the response.  Most of the changes look good.  I still have a few questions and open comments.  Please see below.

Lou

On 7/3/2014 8:52 PM, Jeong Ryoo wrote:
Dear Lou,

 

Thanks a lot for your valuable comments.

 

The authors of this draft have discussed your comments, and are proposing our resolutions to your comments. Please, let us know if the proposal is appropriate to address your comments and concerns.

 

Best regards,

 

Authors of draft-ietf-mpls-smp-requirements draft

 

****** Beginning of Comment Resolution ******

 

- Document's usage of "committed" vs "allocated" resources:

In section 1 the document introduces the notion that the
distinction between protection and restoration is based on when
resources are "committed". This difference from past
definition. RFC4427 and 6372 make the distinction that protection
and restoration differ based on when resources are *allocated* not
*committed*. To quote RFC 4427:


...

 

[Authors] After reviewing RFCs 4427, 6372, 3945, 4426, and 4428, we concluded that the distinction between protection and restoration should be aligned with the exiting documents normatively referenced by this document. Accordingly, the following 16 modifications will be done in revision:

... (deleted changes looked fine.)

 

 

(4) Page 7, the first paragraph:

OLD:

the resources for the protection path are fully committed,

NEW

the resources for the protection path are fully dedicated,

 

Dedicated is also an ambiguous term, how about:
OLD
   the resources for the protection path are fully committed, the
   protection path in the case of SMP consists of segments that are
   dedicated to the protection of the related working path and also
NEW
   the resources for the protection path are fully allocated, the
   protection path in the case of SMP consists of segments that are
   allocated to the protection of the related working path and also


OLD:

resources may be planned but would not be committed until …

NEW:

resources may be planned but would not be utilized until …

How about:
OLD
   resources may be planned but would not be committed until requested
NEW

   resources may be allocated but would not be utilized until requested

...
 

(7) The second paragraph of Section 4.1:

OLD:

When the reserved resources of the shared segments are committed to a

particular protection path, there may not be sufficient resources

available for an additional protection path. This then implies that

if another working path of the SMP domain triggers a protection

switch, the commitment of the resources may fail. In order to

optimize the operation of the commitment and preparing for cases of

multiple working paths failing, the commitment of the shared

resources are be coordinated between the different working paths in

the SMP network.

NEW:

When the reserved resources of the shared segments are utilized by a

particular protection path, there may not be sufficient resources

available for an additional protection path. This then implies that

if another working path of the SMP domain triggers a protection

switch, the resource utilization coordination may fail. The different working paths in

the SMP network are involved in the resource utilization coordination. 

.


This is fine, but I wonder why you are using "resource utilization" vs "protection switch"? (this is actually a bit of a general comment -- I the latter is an existing applicable term that would help readers how this document fits in to the technology space.)

...

 

  

(12) Section 5.2, the third bullet item:

OLD:

If multiple protection paths of equal priority are requesting

allocation of the shared resources, the resources SHOULD be

committed on a first come first served basis.

NEW:

If multiple protection paths of equal priority are requesting

the shared resources, the resources SHOULD be

assigned on a first come first served basis.


why use a new term "assigned" vs the previous term "utilized"?  If there is no distinction being made the same term should be used (either term is fine, but choose one). If there is a distinction, it should be made explicit (i.e., explained).

 

(13) Section 5.2, the fourth bullet item:

OLD:

If the protection resources are committed to a protection path,

whose working path has a lower priority, resources required for

the higher priority path SHALL be committed to the higher priority

path.

NEW:

If the protection resources are utilized by a protection path,

whose working path has a lower priority, resources required for

the higher priority path SHALL be assigned to the higher priority

path.

 

 

same comment.

...
 

 

- Section 2, 1st paragraph, last sentence. This sentence really defines
the scope/purpose of the document, i.e., "clarifies the instructions
to protocol designers producing solutions that satisfy the
requirements set out in this document." As such, I'd repeat this in
the abstract and move it to a more pronounced place in section 1 (or
3).

[Authors] We can add the following paragraph at the end of Section 1:

“This document is intended to clarify the instructions to protocol designers producing solutions that satisfy the requirements set out in this document.â€

 



How about being even more explicit (in both the abstract and section 1):
   This document provides requirements  for  any
   mechanism that would be used to implement SMP for MPLS-TP data paths,
   in networks that delegate protection switch coordination to the data
   plane.

- General comment: fate-sharing for co-routed bidirectional LSP
protection: How is co-routing preserved for the reverse path in SMP?
I'd assumed the protection switch coordination protocol would be
required to trigger a switchover of the reverse LSP in the co-routed
case, but don't see this in the document.

[Authors] Fate-sharing is not required by this document. Even in the PSC linear protection switching, such as RFC 6378 (PSC) and RFC 7271 (PSC in APS mode), fate-sharing is not required as unidirectional switching is allowed. This document does not impose any restriction on co-routing, either.

 


Both RFC4427 and 6372 mention this (Bi-directional recovery switching in the former). I think this document really needs to mention something on the topic.  Given the 6372 a "MAY" level requirement is probably sufficient, but this should be confirmed with the WG.  (I personally would like SHOULD as this seems to better match 6372's text "operator often requires...".)


- In section 4 and 5.2 you reference 5712 and 3209 as defining
preemption terminology and behavior. I think 6372 is the right
reference here as it defines both in the context of survivability and
in dependent of control plane.

[Authors] One concern is that RFC 6372 describes both soft and hard preemptions in the context of extra traffic, which is not exactly the case for SMP.


Then 6372 should be referenced and the difference should be described.  Otherwise readers are likely to think you just used the wrong reference and that 6372's text applies.  6372 is after all titled "MPLS-TP Survivability Framework"...

 


- In section 4.2 you say "Therefore, it is suggested that this be
carried out under the control of a dynamic control plane similar to
GMPLS [RFC3945]." perhaps you mean "based on GMPLS"? If so, great,
please make the correction. If not, I think the debate of which
control protocol is used for MPLS-TP is way beyond the scope of this
document.

[Authors] Yes, we will make the correction.

okay

 


- Section 5.1, paragraph 1. Why are you using "SHOULD NOT" here? If
referring to solutions conformant with this document, then these are
informative statements, "and a non-control plane based SMP switchover
mechanism is used, the control plane SHALL NOT ...". If referring to
an operator's/user's choice of protection mechanism, I think the most
you can say is MAY.

[Authors] The first case is the one we are aiming at. We will use SHALL NOT.

 


okay.

- Section 5.2. "Tie-breaking rules SHALL be defined in scope of an SMP
domain." As this is a requirement, what you mean by "tie-breaking
rules" should be defined directly or by reference.

[Authors] The sentence can be rewritten as:

OLD:

Tie-breaking rules SHALL be defined in scope of an SMP domain.

NEW:

In order to cover the situation where the first come first served principle cannot resolve the contention among multiple equal priority requests, i.e., when the requests occur simultaneously,, tie-breaking rules SHALL be defined in scope of an SMP domain.

 

 


good enough (i.e., states that the definition of tie-breaking is FFS.)


- Section 5.3. RFC6372 takes an approach where preemption notification
leverages the standard MPLS-TP OAM mechanisms, is there any reason to
do more / not just follow 6372?

[Authors] We can add the following sentence at the end:

“As described in [RFC6372], the event of preemption may be detected by OAM and reported as a fault or a degradation of traffic delivery.â€Â 


okay.


- Section 5.7. There may be coordination required on soft-preemption as
well (depending on the cross-connects established during LSP
establishment) so coordinated switching should be supported
independent of preemption mode.

[Authors] Yes, we will change the second paragraph from “SMP in hard-preemption mode SHOULD …†to “SMP SHOULD …†and move the changed paragraph above the first paragraph.

 


Nits:

- Abstract: I don't recall the term "executive action" being used in any
earlier related/referenced RFCs. Rather than introduce a new (and
undefined) term, perhaps you can use an existing one, e.g.,
"protection switch"?

[Authors] Yes, the term will be changed as you suggested.

 


great.

- Section 1, paragraph 1. Do we really need another definition of
MPLS-TP to debate? I suggest just referencing your favorite MPLS-TP
document(s) and dropping the first four sentences.

The last sentence also makes a subjective statement. Whether it is
critical or no is unnecessary. You can just say something like 6372
provides a survivability framework for MPLS-TP and is the foundation
for this document.

[Authors] The proposed text for the paragraph 1 is:

“The MPLS Transport Profile (MPLS-TP) is described in [RFC5921],

and [RFC6372] provides a survivability framework for MPLS-TP

and is the foundation for this document.â€

 

okay.


- Section 1, paragraph 3. Isn't the right reference 4427 not 4428?
Also drop the word linear, as it is an unnecessary qualifier and
4427/4428 don't use it.

[Authors] OK.

 

 


- Sections 3 (and to a lesser degree section 2) are really introductory
text. I'm unsure as to why they aren't part of section 1.

[Authors] Section 3 was intended to present a reference model for SMP. Some text of Section 2 is repeated in Section 1 as you suggested earlier.

 

We're in the domain of style, so is your call.

 


- Section 3.2 should have a reference for "existing control plane
solutions for SMP within MPLS".

[Authors] [RFC4206] will be added as a reference


- Section 3.2 again uses the "executive action" term.

[Authors] OK, the term will be changed.

 


- Section 4.1. You say "two operations simultaneously". Do you really
mean "simultaneously" or merely that they must both occur for
protection to be provided? (Same comment in section 5.1.

[Authors] Both actions should occur at the same time, or as closely as possible to provide fast protection.

 

What text change is planned?


- Section 5.2. I suggest numbering the currently bulletted requirements
list.

[Authors] OK, we will use numbers.

 


- Section 5.2: First paragraph and forth bullet last sentence. These
both basically cover the same topic (preemption) and actually say
slightly different things. I suggest combine into a single
requirement to ensure consistency and full coverage of the topic.

[Authors] The first paragraph is for soft-preemption, while the fourth bullet belongs to the requirements of hard-preemption.


Do you plan a text change?  (the 1st paragraph should be a list item and soft-preemption is mentioned as a parenthetical , and the forth doesn't mention its scope as hard preemption.)


- Section 5.2, req 5. How does this relate to section 5.5? Shouldn't
the topics related to timing be consolidated?

[Authors] Yes, req 5 can be moved to Section 5.5.

 

okay.


- Section 5.2: requirement 6 seems to be a subset of 7, so it should be
dropped.

[Authors] Yes, it will be deleted.


great.

- Section 5.2, requirement 8. Isn't this a subset of 9? Why call out
just this one traffic treatment (sub) requirement?

[Authors] Req. 9 will be deleted as it seems to require control plane supports.



- Section 5.3. s/MAY/will

[Authors] OK.

 


- section 5.4: " When the working path detects.." detection is by the
node not the path.

[Authors] Yes. We will simply say that “When the condition that triggered the protection switching is cleared, …â€


- Section 5.4, last sentence. This is only the 2nd time you imply that
the document covers requirements on a new protocol. I think this
point is currently too subtle in the document. (This point was also
made as a minor comment.)

[Authors] As in other protection switching technologies, two modes of operations (revertive and non-revertive) are required.

 


- section 5.6. RFC 6372 should be referenced

[Authors] We will add “as described in [RFC6372]†to the ends of two paragraphs for WTR timer and hold-off timer.

 

Okay.

***** End of Comment resolution *****

...

--------------020809060909070305050609-- From nobody Sat Jul 5 12:49:23 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B327D1B27F9; Sat, 5 Jul 2014 12:49:18 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 0.182 X-Spam-Level: X-Spam-Status: No, score=0.182 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_FONT_FACE_BAD=0.981, HTML_MESSAGE=0.001, J_CHICKENPOX_72=0.6, J_CHICKENPOX_91=0.6, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Navhswq0g-ZE; Sat, 5 Jul 2014 12:49:13 -0700 (PDT) Received: from mail-wg0-x231.google.com (mail-wg0-x231.google.com [IPv6:2a00:1450:400c:c00::231]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 7224B1B27F7; Sat, 5 Jul 2014 12:49:12 -0700 (PDT) Received: by mail-wg0-f49.google.com with SMTP id y10so2772477wgg.8 for ; Sat, 05 Jul 2014 12:49:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=d2OPxjwHtG2nCvWcyHhr+qTWIP46UyzAk5W3F89ES4k=; b=LQisED0lEZhVVg5BMcsRjEv50lP4htBUSx7dk/xlfThlWEeopUaCGTFmn3ARlHoTCz AlV0NfIStfYlitNII437yKIj1+sg5UVYxGNCuCCmjqWqEcoFIN2sTK9o5bMj72lgtVfb FqjH39583r8HrFLzKSX4cDk0QE1MPPtubfWIc3NEeyeYea/vAGPQNm6bMoVNIU/yS3bM LjR5kxiAc4/rIOxEW/ZmjC5TeyPcWpPnFPQVnN2vVFLJ6yuXc6FN1qaHp+faRwmHIfD/ mhbxQAZamqJsCAXf1uo85iVEKqyO22KpOxZLhwBs/pBhYIw5KRosAwmvxUanzh0tCHC5 rc6A== MIME-Version: 1.0 X-Received: by 10.180.86.7 with SMTP id l7mr12607785wiz.55.1404589750937; Sat, 05 Jul 2014 12:49:10 -0700 (PDT) Received: by 10.194.191.163 with HTTP; Sat, 5 Jul 2014 12:49:10 -0700 (PDT) Received: by 10.194.191.163 with HTTP; Sat, 5 Jul 2014 12:49:10 -0700 (PDT) In-Reply-To: <5B4A6CBE3924BB41A3BEE462A8E0B75A28748144@SMTP2.etri.info> References: <53A5ABED.9080408@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28748144@SMTP2.etri.info> Date: Sat, 5 Jul 2014 22:49:10 +0300 Message-ID: From: Yaacov Weingarten To: Jeong Ryoo Content-Type: multipart/alternative; boundary=f46d04428e02290ddc04fd778926 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/pTiynzFBSiTyccL_ayPA1FH1GK4 Cc: "mpls@ietf.org" , "draft-ietf-mpls-smp-requirements.all@tools.ietf.org" , "rtg-ads@tools.ietf.org" , "rtg-dir@ietf.org" Subject: Re: [mpls] RtgDir review: draft-ietf-mpls-smp-requirements-06.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 05 Jul 2014 19:49:18 -0000 --f46d04428e02290ddc04fd778926 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Lou, hi I would like to address two of your comments, in your follow-up message, since I am the source of the change in terminology. Regarding the two occurences of "assigned" in place of "utilized" - when I read the proposed changes,as discussed amongst the authors, I felt that in those two instances the use of "utilized" could lead to some ambiguity. If we state that "resources SHOULD be utilized on a first come first served basis" this could be interpreted (IMO) as referring to the packet level, rather than utilized by a specific path, such that packets from different paths could be interspersed along the shared segments. Therefore,I suggested that or this context it would be better to use a word that meant that the first-come first served basis was at the level of assigning (or allocating) the resources rather than utilizing them. Hope this clarifies this point. I am certain that I speak for the other authors in saying that I am open to other suggestions. BR, yaacov On Jul 4, 2014 3:53 AM, "Jeong Ryoo" wrote: > Dear Lou, > > > > Thanks a lot for your valuable comments. > > > > The authors of this draft have discussed your comments, and are proposing > our resolutions to your comments. Please, let us know if the proposal is > appropriate to address your comments and concerns. > > > > Best regards, > > > > Authors of draft-ietf-mpls-smp-requirements draft > > > > ****** Beginning of Comment Resolution ****** > > > > - Document's usage of "committed" vs "allocated" resources: > > In section 1 the document introduces the notion that the > distinction between protection and restoration is based on when > resources are "committed". This difference from past > definition. RFC4427 and 6372 make the distinction that protection > and restoration differ based on when resources are *allocated* not > *committed*. To quote RFC 4427: > > The distinction between protection and restoration is made based > on the resource allocation done during the recovery LSP/span > establishment. The distinction between different types of > restoration is made based on the level of route computation, > signaling, and resource allocation during the restoration > LSP/span establishment. > > This difference also leads to come confused statements in the > document as well as ambiguity in the text, i.e. confusion by the > reader. The term "committed" is not tightly defined in this > document (or earlier work) and is used differently than how > "allocated" has been used. An example of this can be found in > Section 3.1 which states: > > However, the commitment of the resources, at least for the > shared segments, will only be finalized when the protection > path is actually activated. Therefore, for the purists - > regarding the terminology - SMP lies somewhere between > protection and restoration. > > Both sentences are problematic. In the first, commitment seems to > cover a "protection switch" would "connect" the protection path > but not the earlier "allocation" of resources. (Quoted terms are > used in earlier RFCs.) The second conclusion is based on the new > distinction of protection vs. restoration and is unnecessary with > the existing distinction. > > This issue exists in multiple places in the document where > "committed" is used and I'd recommend that each should be replaced > with terminology used in the referenced RFCs, i.e., "allocation", > "connection", "cross-connect", "protection switch(over)", ... > > Note I'm *not* highlighting all cases where there are problems in the > document related to this issue. There are a couple of places in the > document where I think it's possible that once this terminology > ambiguity is corrected that I'll have other substantive comments. > > > > [Authors] After reviewing RFCs 4427, 6372, 3945, 4426, and 4428, we > concluded that the distinction between protection and restoration should = be > aligned with the exiting documents normatively referenced by this documen= t. > Accordingly, the following 16 modifications will be done in revision: > > > > (1) Section 1, the third paragraph > > OLD: > > As pointed out > > in [RFC6372] and [RFC4428], applying 1+1 linear protection requires > > that resources are committed for use by both the working and > > protection paths. Applying 1:1 protection requires that the same > > resources are committed, but allows the resources of the protection > > path to be utilized for pre-emptible extra traffic. > > NEW: > > As pointed out > > in [RFC6372] and [RFC4428], applying 1+1 protection requires > > that resources are allocated for use by both the working and > > protection paths. Applying 1:1 protection requires that the same > > resources are allocated, but allows the resources of the protection > > path to be utilized for pre-emptible extra traffic. > > > > (2) The whole text in Section 3.1 will be replaced with: > > [RFC6372], based upon the definitions in [RFC4427], differentiates betwee= n > "protection" and "restoration" dependent upon the dynamism of the resourc= e > allocation. The same distinction is used in [RFC3945], [RFC4426], and > [RFC4428]. This document also uses the same distinction between protectio= n > and restoration as stated in [RFC6372]. > > > > (3) In page 6, > > OLD: > > The use of preemption in the network is typically a business or > > policy decision such that when protection resources are contended, > > priority can be applied to determine to which parties the protection > > resources are committed. > > NEW: > > The use of preemption in the network is typically a business or > > policy decision such that when protection resources are contended, > > priority can be applied to determine which parties utilize the protection > > resources. > > > > (4) Page 7, the first paragraph: > > OLD: > > the resources for the protection path are fully committed, > > NEW > > the resources for the protection path are fully dedicated, > > > > OLD: > > resources may be planned but would not be committed until =E2=80=A6 > > NEW: > > resources may be planned but would not be utilized until =E2=80=A6 > > > > (5) In the second paragraph in page 7, > > OLD: > > "Hard Preemption" requires the programming of selectors at the ingress of > each shared segment to specify which backup path has the highest priority > when committing protection resources, the others being preempted. > > NEW > > "Hard Preemption" requires the programming of selectors at the ingress of > each shared segment to specify the priorities of backup paths, so that > traffic of lower priority paths can be preempted. > > > > (6) The first paragraph of Section 4.1: > > OLD: > > =E2=80=A6 and commit the associated resources. The commitment of resource= s > > is dependent upon =E2=80=A6 > > NEW: > > =E2=80=A6 and coordinate the utilization of the associated shared resourc= es. > > The resource utilization coordination is dependent upon =E2=80=A6 > > > > (7) The second paragraph of Section 4.1: > > OLD: > > When the reserved resources of the shared segments are committed to a > > particular protection path, there may not be sufficient resources > > available for an additional protection path. This then implies that > > if another working path of the SMP domain triggers a protection > > switch, the commitment of the resources may fail. In order to > > optimize the operation of the commitment and preparing for cases of > > multiple working paths failing, the commitment of the shared > > resources are be coordinated between the different working paths in > > the SMP network. > > NEW: > > When the reserved resources of the shared segments are utilized by a > > particular protection path, there may not be sufficient resources > > available for an additional protection path. This then implies that > > if another working path of the SMP domain triggers a protection > > switch, the resource utilization coordination may fail. The different > working paths in > > the SMP network are involved in the resource utilization coordination. > > . > > > > (8) Section 5.1, > > OLD: > > =E2=80=A6 and commit the associated resources. > > NEW > > =E2=80=A6 and coordinate the utilization of the associated shared resourc= es. > > > > (9) In Section 5.1, > > OLD: > > In the case of multiple working paths failing, the commitment of the > > shared resources SHALL be coordinated between the different working > > paths in the SMP network. > > NEW: > > In the case of multiple working paths failing, the shared resource > utilization > > coordination SHALL be between the different working > > paths in the SMP network. > > > > (10) Section 5.1.1. > > OLD: > > =E2=80=A6 because they already have been committed to the protection of, = for > example, a higher priority working path. > > NEW: > > =E2=80=A6 because they already have been utilized for the protection of, = for > example, a higher priority working path. > > > > (11) Section 5.2, the second bullet item: > > OLD: > > Resources of the shared segments SHALL be committed to the > > protection path =E2=80=A6 > > NEW: > > Resources of the shared segments SHALL be utilized by the > > protection path =E2=80=A6 > > > > (12) Section 5.2, the third bullet item: > > OLD: > > If multiple protection paths of equal priority are requesting > > allocation of the shared resources, the resources SHOULD be > > committed on a first come first served basis. > > NEW: > > If multiple protection paths of equal priority are requesting > > the shared resources, the resources SHOULD be > > assigned on a first come first served basis. > > > > (13) Section 5.2, the fourth bullet item: > > OLD: > > If the protection resources are committed to a protection path, > > whose working path has a lower priority, resources required for > > the higher priority path SHALL be committed to the higher priority > > path. > > NEW: > > If the protection resources are utilized by a protection path, > > whose working path has a lower priority, resources required for > > the higher priority path SHALL be assigned to the higher priority > > path. > > > > > > (14) Section 5.2. the seventh bullet item > > OLD: > > Once resources of shared segments have been successfully committed > > to a protection path, =E2=80=A6 > > NEW: > > Once resources of shared segments have been successfully utilized > > by a protection path, =E2=80=A6 > > > > (15) Section 5.3, the first paragraph, > > OLD: > > =E2=80=A6 request the commitment of protection resources. If the necessar= y > > shared resources are unavailable to be committed to the protection > > path, the endpoints =E2=80=A6 > > > > NEW: > > =E2=80=A6 request the coordination of the shared resource utilization. If= the > necessary > > shared resources are unavailable, the endpoints =E2=80=A6 > > > > (16) Section 5.3, the second paragraph, > > OLD: > > Similarly, if preemption is supported and the resources currently > > committed for a particular working path are =E2=80=A6 > > NEW: > > Similarly, if preemption is supported and the resources currently > > utilized by a particular working path are =E2=80=A6 > > > > > > - Section 2, 1st paragraph, last sentence. This sentence really defines > the scope/purpose of the document, i.e., "clarifies the instructions > to protocol designers producing solutions that satisfy the > requirements set out in this document." As such, I'd repeat this in > the abstract and move it to a more pronounced place in section 1 (or > 3). > > [Authors] We can add the following paragraph at the end of Section 1: > > =E2=80=9CThis document is intended to clarify the instructions to protoco= l > designers producing solutions that satisfy the requirements set out in th= is > document.=E2=80=9D > > > > > - General comment: fate-sharing for co-routed bidirectional LSP > protection: How is co-routing preserved for the reverse path in SMP? > I'd assumed the protection switch coordination protocol would be > required to trigger a switchover of the reverse LSP in the co-routed > case, but don't see this in the document. > > [Authors] Fate-sharing is not required by this document. Even in the PSC > linear protection switching, such as RFC 6378 (PSC) and RFC 7271 (PSC in > APS mode), fate-sharing is not required as unidirectional switching is > allowed. This document does not impose any restriction on co-routing, > either. > > > > > - In section 4 and 5.2 you reference 5712 and 3209 as defining > preemption terminology and behavior. I think 6372 is the right > reference here as it defines both in the context of survivability and > in dependent of control plane. > > [Authors] One concern is that RFC 6372 describes both soft and hard > preemptions in the context of extra traffic, which is not exactly the cas= e > for SMP. > > > > > - In section 4.2 you say "Therefore, it is suggested that this be > carried out under the control of a dynamic control plane similar to > GMPLS [RFC3945]." perhaps you mean "based on GMPLS"? If so, great, > please make the correction. If not, I think the debate of which > control protocol is used for MPLS-TP is way beyond the scope of this > document. > > [Authors] Yes, we will make the correction. > > > > > - Section 5.1, paragraph 1. Why are you using "SHOULD NOT" here? If > referring to solutions conformant with this document, then these are > informative statements, "and a non-control plane based SMP switchover > mechanism is used, the control plane SHALL NOT ...". If referring to > an operator's/user's choice of protection mechanism, I think the most > you can say is MAY. > > [Authors] The first case is the one we are aiming at. We will use SHALL > NOT. > > > > > - Section 5.2. "Tie-breaking rules SHALL be defined in scope of an SMP > domain." As this is a requirement, what you mean by "tie-breaking > rules" should be defined directly or by reference. > > [Authors] The sentence can be rewritten as: > > OLD: > > Tie-breaking rules SHALL be defined in scope of an SMP domain. > > NEW: > > In order to cover the situation where the first come first served > principle cannot resolve the contention among multiple equal priority > requests, i.e., when the requests occur simultaneously,, tie-breaking > rules SHALL be defined in scope of an SMP domain. > > > > > > > - Section 5.3. RFC6372 takes an approach where preemption notification > leverages the standard MPLS-TP OAM mechanisms, is there any reason to > do more / not just follow 6372? > > [Authors] We can add the following sentence at the end: > > =E2=80=9CAs described in [RFC6372], the event of preemption may be detect= ed by OAM > and reported as a fault or a degradation of traffic delivery.=E2=80=9D > > > - Section 5.7. There may be coordination required on soft-preemption as > well (depending on the cross-connects established during LSP > establishment) so coordinated switching should be supported > independent of preemption mode. > > [Authors] Yes, we will change the second paragraph from =E2=80=9CSMP in > hard-preemption mode SHOULD =E2=80=A6=E2=80=9D to =E2=80=9CSMP SHOULD =E2= =80=A6=E2=80=9D and move the changed > paragraph above the first paragraph. > > > > > Nits: > > - Abstract: I don't recall the term "executive action" being used in any > earlier related/referenced RFCs. Rather than introduce a new (and > undefined) term, perhaps you can use an existing one, e.g., > "protection switch"? > > [Authors] Yes, the term will be changed as you suggested. > > > > > - Section 1, paragraph 1. Do we really need another definition of > MPLS-TP to debate? I suggest just referencing your favorite MPLS-TP > document(s) and dropping the first four sentences. > > The last sentence also makes a subjective statement. Whether it is > critical or no is unnecessary. You can just say something like 6372 > provides a survivability framework for MPLS-TP and is the foundation > for this document. > > [Authors] The proposed text for the paragraph 1 is: > > =E2=80=9CThe MPLS Transport Profile (MPLS-TP) is described in [RFC5921], > > and [RFC6372] provides a survivability framework for MPLS-TP > > and is the foundation for this document.=E2=80=9D > > > > > - Section 1, paragraph 3. Isn't the right reference 4427 not 4428? > Also drop the word linear, as it is an unnecessary qualifier and > 4427/4428 don't use it. > > [Authors] OK. > > > > > > > - Sections 3 (and to a lesser degree section 2) are really introductory > text. I'm unsure as to why they aren't part of section 1. > > [Authors] Section 3 was intended to present a reference model for SMP. > Some text of Section 2 is repeated in Section 1 as you suggested earlier. > > > > > > > - Section 3.2 should have a reference for "existing control plane > solutions for SMP within MPLS". > > [Authors] [RFC4206] will be added as a reference > > > - Section 3.2 again uses the "executive action" term. > > [Authors] OK, the term will be changed. > > > > > - Section 4.1. You say "two operations simultaneously". Do you really > mean "simultaneously" or merely that they must both occur for > protection to be provided? (Same comment in section 5.1. > > [Authors] Both actions should occur at the same time, or as closely as > possible to provide fast protection. > > > > > - Section 5.2. I suggest numbering the currently bulletted requirements > list. > > [Authors] OK, we will use numbers. > > > > > - Section 5.2: First paragraph and forth bullet last sentence. These > both basically cover the same topic (preemption) and actually say > slightly different things. I suggest combine into a single > requirement to ensure consistency and full coverage of the topic. > > [Authors] The first paragraph is for soft-preemption, while the fourth > bullet belongs to the requirements of hard-preemption. > > > - Section 5.2, req 5. How does this relate to section 5.5? Shouldn't > the topics related to timing be consolidated? > > [Authors] Yes, req 5 can be moved to Section 5.5. > > > > > - Section 5.2: requirement 6 seems to be a subset of 7, so it should be > dropped. > > [Authors] Yes, it will be deleted. > > > - Section 5.2, requirement 8. Isn't this a subset of 9? Why call out > just this one traffic treatment (sub) requirement? > > [Authors] Req. 9 will be deleted as it seems to require control plane > supports. > > > > - Section 5.3. s/MAY/will > > [Authors] OK. > > > > > - section 5.4: " When the working path detects.." detection is by the > node not the path. > > [Authors] Yes. We will simply say that =E2=80=9CWhen the condition that > triggered the protection switching is cleared, =E2=80=A6=E2=80=9D > > > - Section 5.4, last sentence. This is only the 2nd time you imply that > the document covers requirements on a new protocol. I think this > point is currently too subtle in the document. (This point was also > made as a minor comment.) > > [Authors] As in other protection switching technologies, two modes of > operations (revertive and non-revertive) are required. > > > > > - section 5.6. RFC 6372 should be referenced > > [Authors] We will add =E2=80=9Cas described in [RFC6372]=E2=80=9D to the = ends of two > paragraphs for WTR timer and hold-off timer. > > > > ***** End of Comment resolution ***** > > > > > > ------------------------------ > *=EB=B3=B4=EB=82=B8 =EC=82=AC=EB=9E=8C : *"Lou Berger" > *=EB=B3=B4=EB=82=B8 =EB=82=A0=EC=A7=9C : *2014-06-22 01:00:48 ( +09:00 ) > *=EB=B0=9B=EB=8A=94 =EC=82=AC=EB=9E=8C : *rtg-ads@tools.ietf.org > *=EC=B0=B8=EC=A1=B0 : *rtg-dir@ietf.org , > draft-ietf-mpls-smp-requirements.all@tools.ietf.org < > draft-ietf-mpls-smp-requirements.all@tools.ietf.org>, mpls@ietf.org < > mpls@ietf.org> > *=EC=A0=9C=EB=AA=A9 : *[mpls] RtgDir review: draft-ietf-mpls-smp-requirem= ents-06.txt > > > Hello, > > I have been selected as the Routing Directorate reviewer for this > draft. The Routing Directorate seeks to review all routing or > routing-related drafts as they pass through IETF last call and IESG > review, and sometimes on special request. The purpose of the review is > to provide assistance to the Routing ADs. For more information about the > Routing Directorate, please see > http://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir > > Although these comments are primarily for the use of the Routing ADs, it > would be helpful if you could consider them along with any other IETF > Last Call comments that you receive, and strive to resolve them through > discussion or by updating the draft. > > Document: draft-ietf-mpls-smp-requirements-06.txt > Reviewer: Lou Berger > Review Date: June 21 2014 > IETF LC End Date: 2014-06-23 > Intended Status: Informational > > Summary: > I have some minor concerns about this document that I think > should (must, actually) be resolved before publication. > > Comments: > > I think the document is well written and, other than a couple of > terminology related issues, easily understood. The document does > have a number of terminology and technical issues which should be > readily resolved prior to publication. > > Major Issues: > > Major issues are the type of concerns that will result in the > document being blocked until they are resolved. The Routing ADs will > become involved. Please include all of the major issues you have > found. Give as much context information as possible (e.g., section > numbers, paragraph counts). If you find no major issues, please > write: "No major issues found." > > - No major issues found. In particular, I expect all issues can be > resolved without AD intervention. Some of the minor issues, if not > resolved will be escalated to the AD/major issue category. > > Minor Issues: > > Minor issues are concerns about clarity or technical accuracy that > should be discussed and resolved before publication, but which would > normally be resolved between the authors and the reviewers. Please > include all of the minor issues you have found. Give as much context > information as possible (e.g., section numbers, paragraph counts). > If you find no minor issues, please write: "No minor issues found." > > - Document's usage of "committed" vs "allocated" resources: > > In section 1 the document introduces the notion that the > distinction between protection and restoration is based on when > resources are "committed". This difference from past > definition. RFC4427 and 6372 make the distinction that protection > and restoration differ based on when resources are *allocated* not > *committed*. To quote RFC 4427: > > The distinction between protection and restoration is made based > on the resource allocation done during the recovery LSP/span > establishment. The distinction between different types of > restoration is made based on the level of route computation, > signaling, and resource allocation during the restoration > LSP/span establishment. > > This difference also leads to come confused statements in the > document as well as ambiguity in the text, i.e. confusion by the > reader. The term "committed" is not tightly defined in this > document (or earlier work) and is used differently than how > "allocated" has been used. An example of this can be found in > Section 3.1 which states: > > However, the commitment of the resources, at least for the > shared segments, will only be finalized when the protection > path is actually activated. Therefore, for the purists - > regarding the terminology - SMP lies somewhere between > protection and restoration. > > Both sentences are problematic. In the first, commitment seems to > cover a "protection switch" would "connect" the protection path > but not the earlier "allocation" of resources. (Quoted terms are > used in earlier RFCs.) The second conclusion is based on the new > distinction of protection vs. restoration and is unnecessary with > the existing distinction. > > This issue exists in multiple places in the document where > "committed" is used and I'd recommend that each should be replaced > with terminology used in the referenced RFCs, i.e., "allocation", > "connection", "cross-connect", "protection switch(over)", ... > > Note I'm *not* highlighting all cases where there are problems in the > document related to this issue. There are a couple of places in the > document where I think it's possible that once this terminology > ambiguity is corrected that I'll have other substantive comments. > > - Section 2, 1st paragraph, last sentence. This sentence really defines > the scope/purpose of the document, i.e., "clarifies the instructions > to protocol designers producing solutions that satisfy the > requirements set out in this document." As such, I'd repeat this in > the abstract and move it to a more pronounced place in section 1 (or > 3). > > - General comment: fate-sharing for co-routed bidirectional LSP > protection: How is co-routing preserved for the reverse path in SMP? > I'd assumed the protection switch coordination protocol would be > required to trigger a switchover of the reverse LSP in the co-routed > case, but don't see this in the document. > > - In section 4 and 5.2 you reference 5712 and 3209 as defining > preemption terminology and behavior. I think 6372 is the right > reference here as it defines both in the context of survivability and > in dependent of control plane. > > - In section 4.2 you say "Therefore, it is suggested that this be > carried out under the control of a dynamic control plane similar to > GMPLS [RFC3945]." perhaps you mean "based on GMPLS"? If so, great, > please make the correction. If not, I think the debate of which > control protocol is used for MPLS-TP is way beyond the scope of this > document. > > - Section 5.1, paragraph 1. Why are you using "SHOULD NOT" here? If > referring to solutions conformant with this document, then these are > informative statements, "and a non-control plane based SMP switchover > mechanism is used, the control plane SHALL NOT ...". If referring to > an operator's/user's choice of protection mechanism, I think the most > you can say is MAY. > > - Section 5.2. "Tie-breaking rules SHALL be defined in scope of an SMP > domain." As this is a requirement, what you mean by "tie-breaking > rules" should be defined directly or by reference. > > - Section 5.3. RFC6372 takes an approach where preemption notification > leverages the standard MPLS-TP OAM mechanisms, is there any reason to > do more / not just follow 6372? > > - Section 5.7. There may be coordination required on soft-preemption as > well (depending on the cross-connects established during LSP > establishment) so coordinated switching should be supported > independent of preemption mode. > > Nits: > > - Abstract: I don't recall the term "executive action" being used in any > earlier related/referenced RFCs. Rather than introduce a new (and > undefined) term, perhaps you can use an existing one, e.g., > "protection switch"? > > - Section 1, paragraph 1. Do we really need another definition of > MPLS-TP to debate? I suggest just referencing your favorite MPLS-TP > document(s) and dropping the first four sentences. > > The last sentence also makes a subjective statement. Whether it is > critical or no is unnecessary. You can just say something like 6372 > provides a survivability framework for MPLS-TP and is the foundation > for this document. > > - Section 1, paragraph 3. Isn't the right reference 4427 not 4428? > Also drop the word linear, as it is an unnecessary qualifier and > 4427/4428 don't use it. > > - Sections 3 (and to a lesser degree section 2) are really introductory > text. I'm unsure as to why they aren't part of section 1. > > - Section 3.2 should have a reference for "existing control plane > solutions for SMP within MPLS". > > - Section 3.2 again uses the "executive action" term. > > - Section 4.1. You say "two operations simultaneously". Do you really > mean "simultaneously" or merely that they must both occur for > protection to be provided? (Same comment in section 5.1. > > - Section 5.2. I suggest numbering the currently bulletted requirements > list. > > - Section 5.2: First paragraph and forth bullet last sentence. These > both basically cover the same topic (preemption) and actually say > slightly different things. I suggest combine into a single > requirement to ensure consistency and full coverage of the topic. > > - Section 5.2, req 5. How does this relate to section 5.5? Shouldn't > the topics related to timing be consolidated? > > - Section 5.2: requirement 6 seems to be a subset of 7, so it should be > dropped. > > - Section 5.2, requirement 8. Isn't this a subset of 9? Why call out > just this one traffic treatment (sub) requirement? > > - Section 5.3. s/MAY/will > > - section 5.4: " When the working path detects.." detection is by the > node not the path. > > - Section 5.4, last sentence. This is only the 2nd time you imply that > the document covers requirements on a new protocol. I think this > point is currently too subtle in the document. (This point was also > made as a minor comment.) > > - section 5.6. RFC 6372 should be referenced > > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > > --f46d04428e02290ddc04fd778926 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

Lou, hi
I would like to address two of your comments, in your follow-up message, s= ince I am the source of the change in terminology.

Regarding the two occurences of "assigned" in place of "u= tilized" - when I read the proposed changes,as discussed amongst the a= uthors, I felt that in those two instances the use of "utilized" = could lead to some ambiguity.

If we state that "resources SHOULD be utilized on a first come firs= t served basis" this could be interpreted (IMO) as referring to the pa= cket level, rather than=C2=A0 utilized by a specific path, such that packet= s from different paths could be interspersed along the shared segments. The= refore,I suggested that or this context it would be better to use a word th= at meant that the first-come first served basis was at the level of assigni= ng (or allocating) the resources rather than utilizing them.

Hope this clarifies this point. I am certain that I speak for the other = authors in=C2=A0 saying that I am open to other suggestions.

BR,
yaacov

On Jul 4, 2014 3:53 AM, "Jeong Ryoo" &= lt;ryoo@etri.re.kr> wrote:
<= font face=3D"=EB=A7=91=EC=9D=80 =EA=B3=A0=EB=94=95">Dear Lou,=

=C2=A0

Thanks a lot for your valuable comments.<= /p>

=C2=A0

The authors of this draft have discussed your comments,= and are proposing our resolutions to your comments. Please, let us know if= the proposal is appropriate to address your comments and concerns.<= /span>

=C2=A0

Best regards,

=C2=A0

Authors of draft-ietf-mpls-smp-requirements draft

=C2=A0

*= ***** Beginning of Comment Resolution ******

=C2=A0

-= Document's usage of "committed" vs "allocated" res= ources:

In section 1 the document introduces the notion that the
distinction between protection and restoration is based on when
resources are "committed". This difference from past
definition. RFC4427 and 6372 make the distinction that protection
and restoration differ based on when resources are *allocated* not
*committed*. To quote RFC 4427:

The distinction between protection and restoration is made based
on the resource allocation done during the recovery LSP/span
establishment. The distinction between different types of
restoration is made based on the level of route computation,
signaling, and resource allocation during the restoration
LSP/span establishment.

This difference also leads to come confused statements in the
document as well as ambiguity in the text, i.e. confusion by the
reader. The term "committed" is not tightly defined in this
document (or earlier work) and is used differently than how
"allocated" has been used. An example of this can be found in
Section 3.1 which states:

However, the commitment of the resources, at least for the
shared segments, will only be finalized when the protection
path is actually activated. Therefore, for the purists -
regarding the terminology - SMP lies somewhere between
protection and restoration.

Both sentences are problematic. In the first, commitment seems to
cover a "protection switch" would "connect" the protect= ion path
but not the earlier "allocation" of resources. (Quoted terms are<= br> used in earlier RFCs.) The second conclusion is based on the new
distinction of protection vs. restoration and is unnecessary with
the existing distinction.

This issue exists in multiple places in the document where
"committed" is used and I'd recommend that each should be rep= laced
with terminology used in the referenced RFCs, i.e., "allocation",=
"connection", "cross-connect", "protection switch(= over)", ...

Note I'm *not* highlighting all cases where there are problems in the document related to this issue. There are a couple of places in the
document where I think it's possible that once this terminology
ambiguity is corrected that I'll have other substantive comments.

=C2=A0

[Authors] After reviewing RFCs 4427, 6372, 3945, 4426, = and 4428, we concluded that the distinction between protection and restorat= ion should be aligned with the exiting documents normatively referenced by this document. Accordingly, the following 16 modifications will be done= in revision:

=C2=A0

(1) Section 1, the third paragraph

OLD:

As pointed out

in [RFC6372] and [RFC4428], applying 1+1 linear protect= ion requires

that resources are committed for use by both the workin= g and

protection paths. Applying 1:1 protection requires that= the same

resources are committed, but allows the resources of th= e protection

path to be utilized for pre-emptible extra traffic.

NEW:

As pointed out

in [RFC6372] and [RFC4428], applying 1+1 protection req= uires

that resources are allocated for use by both the workin= g and

protection paths. Applying 1:1 protection requires that= the same

resources are allocated, but allows the resources of th= e protection

path to be utilized for pre-emptible extra traffic.

=C2=A0

(2) The whole text in Section 3.1 will be replaced with= :

[RFC6372], based upon the definitions in [RFC4427], dif= ferentiates between "protection" and "restoration" depe= ndent upon the dynamism of the resource allocation. The same distinction is= used in [RFC3945], [RFC4426], and [RFC4428]. This document also uses the same distinction bet= ween protection and restoration as stated in [RFC6372].

=C2=A0

(3) In page 6,

OLD:

The use of preemption in the network is typically a bus= iness or

policy decision such that when protection resources are= contended,

priority can be applied to determine to which parties t= he protection

resources are committed.

NEW:

The use of preemption in the network is typically a bus= iness or

policy decision such that when protection resources are= contended,

priority can be applied to determine which parties util= ize the protection

resources.

=C2=A0

(4) Page 7, the first paragraph:

OLD:

the resources for the protection path are fully committ= ed,

NEW

the resources for the protection path are fully dedicat= ed,

=C2=A0

OLD:

resources may be planned but would not be committed unt= il =E2=80=A6

NEW:

resources may be planned but would not be utilized unti= l =E2=80=A6

=C2=A0

(5) In the second paragraph in page 7,

OLD:

"Hard Preemption" requires the programming of= selectors at the ingress of each shared segment to specify which backup pa= th has the highest priority when committing protection resources, the other= s being preempted.

NEW

"Hard Preemption" requires the programming of= selectors at the ingress of each shared segment to specify the priorities = of backup paths, so that traffic of lower priority paths can be preempted.

=C2=A0

(6) The first paragraph of Section 4.1:

OLD:

=E2=80=A6 and commit the associated resources. The comm= itment of resources

is dependent upon =E2=80=A6

NEW:

=E2=80=A6 and coordinat= e the utilization of the associated shared resources.

The resource utilization= coordination is dependent upon =E2=80=A6

=C2=A0

(7) The second paragraph of Section 4.1:<= /p>

OLD:

When the reserved resources of the shared segments are = committed to a

particular protection path, there may not be sufficient= resources

available for an additional protection path. This then = implies that

if another working path of the SMP domain triggers a pr= otection

switch, the commitment of the resources may fail. In or= der to

optimize the operation of the commitment and preparing = for cases of

multiple working paths failing, the commitment of the s= hared

resources are be coordinated between the different work= ing paths in

the SMP network.

NEW:

When the reserved resources of the shared segments are = utilized by a

particular protection path, there may not be sufficient= resources

available for an additional protection path. This then = implies that

if another working path of the SMP domain triggers a pr= otection

switch, the resource utilization coordination may fail.= The different working paths in

the SMP network are involved in the resource utilizatio= n coordination.=C2=A0

.

=C2=A0

(8) Section 5.1,

OLD:

=E2=80=A6 and commit the associated resources.

NEW

=E2=80=A6 and coordinat= e the utilization of the associated shared resources.

=C2=A0

(9) In Section 5.1,

OLD:

In the case of multiple working paths failing, the comm= itment of the

shared resources SHALL be coordinated between the diffe= rent working

paths in the SMP network.

NEW:

In the case of multiple working paths failing, the shar= ed resource utilization

coordination SHALL be between the different working

paths in the SMP network.

=C2=A0

(10) Section 5.1.1.

OLD:

=E2=80=A6 because they already have been committed to t= he protection of, for example, a higher priority working path.

NEW:

=E2=80=A6 because they already have been utilized for t= he protection of, for example, a higher priority working path.

=C2=A0

(11) Section 5.2, the second bullet item:=

OLD:

Resources of the shared segments SHALL be committed to = the

protection path =E2=80=A6

NEW:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0

Resources of the shared segments SHALL be utilized by t= he

protection path =E2=80=A6

=C2=A0

(12) Section 5.2, the third bullet item:<= /p>

OLD:

If multiple protection paths of equal priority are requ= esting

allocation of the shared resources, the resources SHOUL= D be

committed on a first come first served basis.

NEW:

If multiple protection paths of equal priority are requ= esting

the shared resources, the resources SHOULD be

assigned on a first come first served basis.

=C2=A0

(13) Section 5.2, the fourth bullet item:=

OLD:

If the protection resources are committed to a protecti= on path,

whose working path has a lower priority, resources requ= ired for

the higher priority path SHALL be committed to the high= er priority

path.

NEW:

If the protection resources are utilized by a protectio= n path,

whose working path has a lower priority, resources requ= ired for

the higher priority path SHALL be assigned to the highe= r priority

path.

=C2=A0

=C2=A0

(14) Section 5.2. the seventh bullet item=

OLD:

Once resources of shared segments have been successfull= y committed

to a protection path, =E2=80=A6

NEW:

Once resources of shared segments have been successfull= y utilized

by a protection path, =E2=80=A6

=C2=A0

(15) Section 5.3, the first paragraph,

OLD:

=E2=80=A6 request the commitment of protection resource= s. If the necessary

shared resources are unavailable to be committed to the= protection

path, the endpoints =E2=80=A6

=C2=A0

NEW:

=E2=80=A6 request the coordination of the shared resour= ce utilization. If the necessary

shared resources are unavailable, the endpoints =E2=80= =A6

=C2=A0

(16) Section 5.3, the second paragraph,

OLD:

Similarly, if preemption is supported and the resources= currently

committed for a particular working path are =E2=80=A6

NEW:

Similarly, if preemption is supported and the resources= currently

utilized by a particular working path are =E2=80=A6

=C2=A0

=C2=A0

-= Section 2, 1st paragraph, last sentence. This sentence really defines
the scope/purpose of the document, i.e., "clarifies the instructions to protocol designers producing solutions that satisfy the
requirements set out in this document." As such, I'd repeat this i= n
the abstract and move it to a more pronounced place in section 1 (or
3).

[Authors] We can add the following paragraph at the end= of Section 1:

=E2=80=9CThis document is intended to clarify the instr= uctions to protocol designers producing solutions that satisfy the requirem= ents set out in this document.=E2=80=9D

=C2=A0


- General comment: fat= e-sharing for co-routed bidirectional LSP
protection: How is co-routing preserved for the reverse path in SMP?
I'd assumed the protection switch coordination protocol would be
required to trigger a switchover of the reverse LSP in the co-routed
case, but don't see this in the document.

[Authors] Fate-sharing is not required by this document= . Even in the PSC linear protection switching, such as RFC 6378 (PSC) and R= FC 7271 (PSC in APS mode), fate-sharing is not required as unidirectional switching is allowed. This document does not impose any restriction on co-= routing, either.

=C2=A0


- In section 4 and 5.2= you reference 5712 and 3209 as defining
preemption terminology and behavior. I think 6372 is the right
reference here as it defines both in the context of survivability and
in dependent of control plane.

[Authors] One concern is that RFC 6372 describes both s= oft and hard preemptions in the context of extra traffic, which is not exac= tly the case for SMP.

=C2=A0


- In section 4.2 you s= ay "Therefore, it is suggested that this be
carried out under the control of a dynamic control plane similar to
GMPLS [RFC3945]." perhaps you mean "based on GMPLS"? If so, = great,
please make the correction. If not, I think the debate of which
control protocol is used for MPLS-TP is way beyond the scope of this
document.

[Authors] Yes, we will make the correction.

=C2=A0


- Section 5.1, paragra= ph 1. Why are you using "SHOULD NOT" here? If
referring to solutions conformant with this document, then these are
informative statements, "and a non-control plane based SMP switchover<= br> mechanism is used, the control plane SHALL NOT ...". If referring to an operator's/user's choice of protection mechanism, I think the mo= st
you can say is MAY.

[Authors] The first case is the one we are aiming at. W= e will use SHALL NOT.

=C2=A0


- Section 5.2. "T= ie-breaking rules SHALL be defined in scope of an SMP
domain." As this is a requirement, what you mean by "tie-breaking=
rules" should be defined directly or by reference.

[Authors] The sentence can be rewritten as:

OLD:

Tie-breaking rules SHALL be defined in scope of an SMP = domain.

NEW:

In order to cover the=C2=A0situation where=C2=A0the fir= st come first served principle cannot resolve the contention among multiple= equal priority requests, i.e., when the requests occur simultaneously,, tie-brea= king rules SHALL be defined in scope of an SMP domain.

=C2=A0

=C2=A0


- Section 5.3. RFC6372= takes an approach where preemption notification
leverages the standard MPLS-TP OAM mechanisms, is there any reason to
do more / not just follow 6372?

[Authors] We can add the following sentence at the end:

=E2=80=9CAs described in [RFC6372], the event of preemp= tion may be detected by OAM and reported as a fault or a degradation of tra= ffic delivery.=E2=80=9D=C2=A0


- Section 5.7. There m= ay be coordination required on soft-preemption as
well (depending on the cross-connects established during LSP
establishment) so coordinated switching should be supported
independent of preemption mode.

[Authors] Yes, we will change the second paragraph from= =E2=80=9CSMP in hard-preemption mode SHOULD =E2=80=A6=E2=80=9D to =E2=80= =9CSMP SHOULD =E2=80=A6=E2=80=9D and move the changed paragraph above the f= irst paragraph.

=C2=A0


Nits:

- Abstract: I don't recall the term "executive action" being = used in any
earlier related/referenced RFCs. Rather than introduce a new (and
undefined) term, perhaps you can use an existing one, e.g.,
"protection switch"?

[Authors] Yes, the term will be changed as you suggeste= d.

=C2=A0


- Section 1, paragraph= 1. Do we really need another definition of
MPLS-TP to debate? I suggest just referencing your favorite MPLS-TP
document(s) and dropping the first four sentences.

The last sentence also makes a subjective statement. Whether it is
critical or no is unnecessary. You can just say something like 6372
provides a survivability framework for MPLS-TP and is the foundation
for this document.

[Authors] The proposed text for the paragraph 1 is:

=E2=80=9CThe MPLS Transport Profile (MPLS-TP) is descri= bed in [RFC5921],

and [RFC6372] provides a survivability framework for MP= LS-TP

and is the foundation for this document.=E2=80=9D

=C2=A0


- Section 1, paragraph= 3. Isn't the right reference 4427 not 4428?
Also drop the word linear, as it is an unnecessary qualifier and
4427/4428 don't use it.

[Authors] OK.

=C2=A0

=C2=A0


- Sections 3 (and to a= lesser degree section 2) are really introductory
text. I'm unsure as to why they aren't part of section 1.

[Authors] Section 3 was intended to present a reference= model for SMP. Some text of Section 2 is repeated in Section 1 as you sugg= ested earlier.

=C2=A0

=C2=A0


- Section 3.2 should h= ave a reference for "existing control plane
solutions for SMP within MPLS".

[Authors] [RFC4206] will be added as a reference=


- Section 3.2 again us= es the "executive action" term.

[Authors] OK, the term will be changed.

=C2=A0


- Section 4.1. You say= "two operations simultaneously". Do you really
mean "simultaneously" or merely that they must both occur for
protection to be provided? (Same comment in section 5.1.

[Authors] Both actions should occur at the same time, o= r as closely as possible to provide fast protection.

=C2=A0


- Section 5.2. I sugge= st numbering the currently bulletted requirements
list.

[Authors] OK, we will use numbers.

=C2=A0


- Section 5.2: First p= aragraph and forth bullet last sentence. These
both basically cover the same topic (preemption) and actually say
slightly different things. I suggest combine into a single
requirement to ensure consistency and full coverage of the topic.

[Authors] The first paragraph is for soft-preemption, w= hile the fourth bullet belongs to the requirements of hard-preemption.


- Section 5.2, req 5. = How does this relate to section 5.5? Shouldn't
the topics related to timing be consolidated?

[Authors] Yes, req 5 can be moved to Section 5.5.

=C2=A0


- Section 5.2: require= ment 6 seems to be a subset of 7, so it should be
dropped.

[Authors] Yes, it will be deleted.


- Section 5.2, require= ment 8. Isn't this a subset of 9? Why call out
just this one traffic treatment (sub) requirement?

[Authors] Req. 9 will be deleted as it seems to require= control plane supports.



- Section 5.3. s/MAY/w= ill

[Authors] OK.

=C2=A0


- section 5.4: " = When the working path detects.." detection is by the
node not the path.

[Authors] Yes. We will simply say that =E2=80=9CWhen th= e condition that triggered the protection switching is cleared, =E2=80=A6= =E2=80=9D


- Section 5.4, last se= ntence. This is only the 2nd time you imply that
the document covers requirements on a new protocol. I think this
point is currently too subtle in the document. (This point was also
made as a minor comment.)

[Authors] As in other protection switching technologies= , two modes of operations (revertive and non-revertive) are required.

=C2=A0


- section 5.6. RFC 637= 2 should be referenced

[Authors] We will add =E2=80=9Cas described in [RFC6372= ]=E2=80=9D to the ends of two paragraphs for WTR timer and hold-off timer.

=C2=A0

*= **** End of Comment resolution *****

=C2=A0
=C2=A0



=EB=B3=B4=EB=82=B8 =EC=82=AC=EB=9E=8C : "Lou Berger" <<= a href=3D"mailto:lberger@labn.net" target=3D"_blank">lberger@labn.net&g= t;
=EB=B3=B4=EB=82=B8 =EB=82=A0=EC=A7=9C : 2014-06-22 01:00:48 ( +09:00= )
=EB=B0=9B=EB=8A=94 =EC=82=AC=EB=9E=8C : rtg-ads@tools.ietf.org <rtg-ads@tools.ietf.org&= gt;
=EC=B0=B8=EC=A1=B0 : rtg-dir@ietf.org <rtg-dir@ietf.org>, draft-ietf-mpls-smp-req= uirements.all@tools.ietf.org <draft-ietf-mpls-smp-requ= irements.all@tools.ietf.org>, mpls@ietf.org <mpls@ietf.org>
=EC=A0=9C=EB=AA=A9 : [mpls] RtgDir review: draft-ietf-mpls-smp-requi= rements-06.txt


Hello,

I have been selected as the Routing Directorate reviewer for this
draft. The Routing Directorate seeks to review all routing or
routing-related drafts as they pass through IETF last call and IESG
review, and sometimes on special request. The purpose of the review is
to provide assistance to the Routing ADs. For more information about the Routing Directorate, please see
http://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir

Although these comments are primarily for the use of the Routing ADs, it would be helpful if you could consider them along with any other IETF
Last Call comments that you receive, and strive to resolve them through
discussion or by updating the draft.

Document: draft-ietf-mpls-smp-requirements-06.txt
Reviewer: Lou Berger
Review Date: June 21 2014
IETF LC End Date: 2014-06-23
Intended Status: Informational

Summary:
I have some minor concerns about this document that I think
should (must, actually) be resolved before publication.

Comments:

I think the document is well written and, other than a couple of
terminology related issues, easily understood. The document does
have a number of terminology and technical issues which should be
readily resolved prior to publication.

Major Issues:

Major issues are the type of concerns that will result in the
document being blocked until they are resolved. The Routing ADs will
become involved. Please include all of the major issues you have
found. Give as much context information as possible (e.g., section
numbers, paragraph counts). If you find no major issues, please
write: "No major issues found."

- No major issues found. In particular, I expect all issues can be
resolved without AD intervention. Some of the minor issues, if not
resolved will be escalated to the AD/major issue category.

Minor Issues:

Minor issues are concerns about clarity or technical accuracy that
should be discussed and resolved before publication, but which would
normally be resolved between the authors and the reviewers. Please
include all of the minor issues you have found. Give as much context
information as possible (e.g., section numbers, paragraph counts).
If you find no minor issues, please write: "No minor issues found.&quo= t;

- Document's usage of "committed" vs "allocated" re= sources:

In section 1 the document introduces the notion that the
distinction between protection and restoration is based on when
resources are "committed". This difference from past
definition. RFC4427 and 6372 make the distinction that protection
and restoration differ based on when resources are *allocated* not
*committed*. To quote RFC 4427:

The distinction between protection and restoration is made based
on the resource allocation done during the recovery LSP/span
establishment. The distinction between different types of
restoration is made based on the level of route computation,
signaling, and resource allocation during the restoration
LSP/span establishment.

This difference also leads to come confused statements in the
document as well as ambiguity in the text, i.e. confusion by the
reader. The term "committed" is not tightly defined in this
document (or earlier work) and is used differently than how
"allocated" has been used. An example of this can be found in
Section 3.1 which states:

However, the commitment of the resources, at least for the
shared segments, will only be finalized when the protection
path is actually activated. Therefore, for the purists -
regarding the terminology - SMP lies somewhere between
protection and restoration.

Both sentences are problematic. In the first, commitment seems to
cover a "protection switch" would "connect" the protect= ion path
but not the earlier "allocation" of resources. (Quoted terms are<= br> used in earlier RFCs.) The second conclusion is based on the new
distinction of protection vs. restoration and is unnecessary with
the existing distinction.

This issue exists in multiple places in the document where
"committed" is used and I'd recommend that each should be rep= laced
with terminology used in the referenced RFCs, i.e., "allocation",=
"connection", "cross-connect", "protection switch(= over)", ...

Note I'm *not* highlighting all cases where there are problems in the document related to this issue. There are a couple of places in the
document where I think it's possible that once this terminology
ambiguity is corrected that I'll have other substantive comments.

- Section 2, 1st paragraph, last sentence. This sentence really defines
the scope/purpose of the document, i.e., "clarifies the instructions to protocol designers producing solutions that satisfy the
requirements set out in this document." As such, I'd repeat this i= n
the abstract and move it to a more pronounced place in section 1 (or
3).

- General comment: fate-sharing for co-routed bidirectional LSP
protection: How is co-routing preserved for the reverse path in SMP?
I'd assumed the protection switch coordination protocol would be
required to trigger a switchover of the reverse LSP in the co-routed
case, but don't see this in the document.

- In section 4 and 5.2 you reference 5712 and 3209 as defining
preemption terminology and behavior. I think 6372 is the right
reference here as it defines both in the context of survivability and
in dependent of control plane.

- In section 4.2 you say "Therefore, it is suggested that this be
carried out under the control of a dynamic control plane similar to
GMPLS [RFC3945]." perhaps you mean "based on GMPLS"? If so, = great,
please make the correction. If not, I think the debate of which
control protocol is used for MPLS-TP is way beyond the scope of this
document.

- Section 5.1, paragraph 1. Why are you using "SHOULD NOT" here? = If
referring to solutions conformant with this document, then these are
informative statements, "and a non-control plane based SMP switchover<= br> mechanism is used, the control plane SHALL NOT ...". If referring to an operator's/user's choice of protection mechanism, I think the mo= st
you can say is MAY.

- Section 5.2. "Tie-breaking rules SHALL be defined in scope of an SMP=
domain." As this is a requirement, what you mean by "tie-breaking=
rules" should be defined directly or by reference.

- Section 5.3. RFC6372 takes an approach where preemption notification
leverages the standard MPLS-TP OAM mechanisms, is there any reason to
do more / not just follow 6372?

- Section 5.7. There may be coordination required on soft-preemption as
well (depending on the cross-connects established during LSP
establishment) so coordinated switching should be supported
independent of preemption mode.

Nits:

- Abstract: I don't recall the term "executive action" being = used in any
earlier related/referenced RFCs. Rather than introduce a new (and
undefined) term, perhaps you can use an existing one, e.g.,
"protection switch"?

- Section 1, paragraph 1. Do we really need another definition of
MPLS-TP to debate? I suggest just referencing your favorite MPLS-TP
document(s) and dropping the first four sentences.

The last sentence also makes a subjective statement. Whether it is
critical or no is unnecessary. You can just say something like 6372
provides a survivability framework for MPLS-TP and is the foundation
for this document.

- Section 1, paragraph 3. Isn't the right reference 4427 not 4428?
Also drop the word linear, as it is an unnecessary qualifier and
4427/4428 don't use it.

- Sections 3 (and to a lesser degree section 2) are really introductory
text. I'm unsure as to why they aren't part of section 1.

- Section 3.2 should have a reference for "existing control plane
solutions for SMP within MPLS".

- Section 3.2 again uses the "executive action" term.

- Section 4.1. You say "two operations simultaneously". Do you re= ally
mean "simultaneously" or merely that they must both occur for
protection to be provided? (Same comment in section 5.1.

- Section 5.2. I suggest numbering the currently bulletted requirements
list.

- Section 5.2: First paragraph and forth bullet last sentence. These
both basically cover the same topic (preemption) and actually say
slightly different things. I suggest combine into a single
requirement to ensure consistency and full coverage of the topic.

- Section 5.2, req 5. How does this relate to section 5.5? Shouldn't the topics related to timing be consolidated?

- Section 5.2: requirement 6 seems to be a subset of 7, so it should be
dropped.

- Section 5.2, requirement 8. Isn't this a subset of 9? Why call out just this one traffic treatment (sub) requirement?

- Section 5.3. s/MAY/will

- section 5.4: " When the working path detects.." detection is by= the
node not the path.

- Section 5.4, last sentence. This is only the 2nd time you imply that
the document covers requirements on a new protocol. I think this
point is currently too subtle in the document. (This point was also
made as a minor comment.)

- section 5.6. RFC 6372 should be referenced


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--f46d04428e02290ddc04fd778926-- From nobody Sun Jul 6 06:04:04 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E83FE1A016A for ; Sun, 6 Jul 2014 06:04:00 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -115.152 X-Spam-Level: X-Spam-Status: No, score=-115.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qJ3Uj9sMKrsR for ; Sun, 6 Jul 2014 06:03:59 -0700 (PDT) Received: from rcdn-iport-4.cisco.com (rcdn-iport-4.cisco.com [173.37.86.75]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 8174B1A017C for ; Sun, 6 Jul 2014 06:03:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1508; q=dns/txt; s=iport; t=1404651839; x=1405861439; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=NTBhNVmkwCsUy2AoAKtU4s7v8022xmI69Imus6xMcKg=; b=Vx3raPbwNBvBqkSzHVpIZOfg/29iCqAO1ghAWyHX+ZAbUjsk/ZS6rrSh /73i5JF8ZXyLoMbukKsGAC8QklWu9AcVjjCgFG0APKShIh9TQvYOXTAHE aZUVelvzCRZqSroOnq5CVN7CwW1jIOXkwHE3M+Vn74z/NgkMeuqP9keDm c=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgsFAJtIuVOtJA2F/2dsb2JhbABagmokgSzGKwGBCRZ1hAMBAQEDATo/BQsCAQgiFBAyJQIEDg2IMggByV8XjmARMQeDLYEWAQSWFphsg0OBcEA X-IronPort-AV: E=Sophos;i="5.01,611,1400025600"; d="scan'208";a="338105664" Received: from alln-core-11.cisco.com ([173.36.13.133]) by rcdn-iport-4.cisco.com with ESMTP; 06 Jul 2014 13:03:57 +0000 Received: from xhc-rcd-x09.cisco.com (xhc-rcd-x09.cisco.com [173.37.183.83]) by alln-core-11.cisco.com (8.14.5/8.14.5) with ESMTP id s66D3vvc020551 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Sun, 6 Jul 2014 13:03:57 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-rcd-x09.cisco.com ([173.37.183.83]) with mapi id 14.03.0123.003; Sun, 6 Jul 2014 08:03:57 -0500 From: "Nobo Akiya (nobo)" To: Sam Aldrin Thread-Topic: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 Thread-Index: Ac+Kbg0JI45wiuB+QkmRpWOTfjvnXAAAEROQAn/CxAAAtFWXAAAHKr7g///9lQD//1TMQIACjhEA//5nzTA= Date: Sun, 6 Jul 2014 13:03:56 +0000 Message-ID: References: <4A79394211F1AF4EB57D998426C9340D946A9035@US70UWXCHMBA01.zam.alcatel-lucent.com> <4A79394211F1AF4EB57D998426C9340D946C86F6@US70UWXCHMBA01.zam.alcatel-lucent.com> <9EB527EE-2C56-405D-9340-88A3184A48CA@gmail.com> <3ECD02EE-71E6-4AC5-BBB5-CC0C354219B0@gmail.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.249.185] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/O7Kpk9l6XWAgnmivFMJeIEonWrQ Cc: "mpls@ietf.org" , "Jeffrey \(Zhaohui\) Zhang" , Ross Callon , "draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org" , "mpls-chairs@tools.ietf.org" , "jeremy.whittaker@verizon.com" Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 06 Jul 2014 13:04:01 -0000 Hi Sam, Let me cut most of our discussions, and try to bring this to closure. If you feel that we should continue our discussion, feel free to revive the= m. > As you can see, my argument, just like every other argument made at IETF = is, > why one more extra option, when it already works, albeit with extra > request. Also this requires all nodes to be upgraded to supported to full= y > functional as you describe. The extra cost is not worth it, when you coul= d > achieve the same with small cost in workflow but no upgrade or > protocol/TLV change. I agree that it is important to ask "why is this required". And this is whe= re we seem to have different scale to measure (at least this for this one). As for this extension, it's not just "extra request" that I'm concerned abo= ut, but they are: 1. Extra request =3D more system/network resources. 2. Users/tools requiring to put up with timeout from many LSRs =3D bad usab= ility. 3. Users/tools requiring to know which Reply Mode timed out and what to use= next =3D bad usability. 4. Every product/vendor having [more] vastly different behavior =3D bad usa= bility. So to me, it's worth the effort to do something about it. If above results = in "not worth it" on your scale, then that's that. We can conclude that our= scales are different, but that's IETF :) As always, thanks for the discussions Sam. Despite the fact we couldn't converge, I do appreciate your time and effort= . Thanks! -Nobo From nobody Sun Jul 6 13:14:27 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A76ED1A0A95 for ; Sun, 6 Jul 2014 13:14:17 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2 X-Spam-Level: X-Spam-Status: No, score=-2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id G970lSfwGT-T for ; Sun, 6 Jul 2014 13:14:13 -0700 (PDT) Received: from mail-pa0-x22d.google.com (mail-pa0-x22d.google.com [IPv6:2607:f8b0:400e:c03::22d]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 707B21A0A8C for ; Sun, 6 Jul 2014 13:14:13 -0700 (PDT) Received: by mail-pa0-f45.google.com with SMTP id rd3so4267103pab.18 for ; Sun, 06 Jul 2014 13:14:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=content-type:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=bt9Lvrn/qldnSXujZhZ39s6r6KAZ911GeYHQOfZmduo=; b=uCo75YKkRIv6ArDzCsCVOKu1GJSQv1xEOgYl/xHCB9tvCRFxqjpHHpZ2hFwvg0SGkT lToQy3Ou0xfFWGfGRhgzpIie1zrOVZJU1jihhAnJ3uSgKKMwRT4RmZFZ5EJG9nDJ968u zRnkqkVirALDfJSW0c3kK1aMUUo6se2x97s5ooqeSsuzkg7SOWShF6Iasc8NOosS95ex 5JibYnJ6t8kVYS9S3Y0hKVuKnO8QOO4wk3/bwzuabfz9e7eN0O/qoLnZCDbjfc9tlWNY ABYTAxs7ffgwKjGBE5Tg9Vm97/ENOvRheP5waSk9glwFQ9KzStFG6hN+OjeQWmFiuifs ivVQ== X-Received: by 10.70.92.9 with SMTP id ci9mr23940468pdb.24.1404677653104; Sun, 06 Jul 2014 13:14:13 -0700 (PDT) Received: from [192.168.1.2] (c-107-3-154-60.hsd1.ca.comcast.net. [107.3.154.60]) by mx.google.com with ESMTPSA id g6sm182432827pat.2.2014.07.06.13.14.11 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sun, 06 Jul 2014 13:14:12 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) From: Sam Aldrin In-Reply-To: Date: Sun, 6 Jul 2014 13:14:11 -0700 Content-Transfer-Encoding: quoted-printable Message-Id: References: <4A79394211F1AF4EB57D998426C9340D946A9035@US70UWXCHMBA01.zam.alcatel-lucent.com> <4A79394211F1AF4EB57D998426C9340D946C86F6@US70UWXCHMBA01.zam.alcatel-lucent.com> <9EB527EE-2C56-405D-9340-88A3184A48CA@gmail.com> <3ECD02EE-71E6-4AC5-BBB5-CC0C354219B0@gmail.com> To: "Nobo Akiya (nobo)" X-Mailer: Apple Mail (2.1878.6) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/3C2z_JvKt5ikd0pGbkZ7wKk1cyw Cc: "mpls@ietf.org" , "Jeffrey \(Zhaohui\) Zhang" , Ross Callon , "draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org" , "mpls-chairs@tools.ietf.org" , "jeremy.whittaker@verizon.com" Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 06 Jul 2014 20:14:18 -0000 Hi Nobo, Not sure if the email you send was with reply mode 1 or with new TLV :D.=20= Sending my response as top post. :D I do not think we could converge on efficiency or which is bad/good, = neither would I like to debate about bad usability. My previous questions remain unanswered. Will leave it to you and = co-authors, whether to respond or not. As far as my concerns regarding the ID is concerned, would be good to = illustrate with example lsp's, be it TP or LDP or something else, it is = solving. And quantifying the solution to show it really is required that = existing solutions could not solve it, would help WG. At this point of time, I could not change my conclusion. Sorry. -sam On Jul 6, 2014, at 6:03 AM, Nobo Akiya (nobo) wrote: > Hi Sam, >=20 > Let me cut most of our discussions, and try to bring this to closure. > If you feel that we should continue our discussion, feel free to = revive them. >=20 >> As you can see, my argument, just like every other argument made at = IETF is, >> why one more extra option, when it already works, albeit with extra >> request. Also this requires all nodes to be upgraded to supported to = fully >> functional as you describe. The extra cost is not worth it, when you = could >> achieve the same with small cost in workflow but no upgrade or >> protocol/TLV change. >=20 > I agree that it is important to ask "why is this required". And this = is where we seem to have different scale to measure (at least this for = this one). >=20 > As for this extension, it's not just "extra request" that I'm = concerned about, but they are: >=20 > 1. Extra request =3D more system/network resources. > 2. Users/tools requiring to put up with timeout from many LSRs =3D bad = usability. > 3. Users/tools requiring to know which Reply Mode timed out and what = to use next =3D bad usability. > 4. Every product/vendor having [more] vastly different behavior =3D = bad usability. >=20 > So to me, it's worth the effort to do something about it. If above = results in "not worth it" on your scale, then that's that. We can = conclude that our scales are different, but that's IETF :) >=20 > As always, thanks for the discussions Sam. > Despite the fact we couldn't converge, I do appreciate your time and = effort. >=20 > Thanks! >=20 > -Nobo >=20 From nobody Sun Jul 6 13:21:28 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 604F51A0A9E for ; Sun, 6 Jul 2014 13:21:25 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -115.152 X-Spam-Level: X-Spam-Status: No, score=-115.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id HoFDvO-LVIfq for ; Sun, 6 Jul 2014 13:21:24 -0700 (PDT) Received: from rcdn-iport-3.cisco.com (rcdn-iport-3.cisco.com [173.37.86.74]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 350451A0A9C for ; Sun, 6 Jul 2014 13:21:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=613; q=dns/txt; s=iport; t=1404678084; x=1405887684; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=alr9WYQ4Uoj0WRGbnN6DqQmjUczLMwdAltP+88ijFLo=; b=V9WRqI+bt9kIr4FEe3GjmP69BspaVcB5dt7/wR44LiQNweCX8Z/KLfTf yH9cAJ66xurfFaW6074y8GGrGV7+SuSUcqIjjTYPIedB1VltABQdGIEfz dIT8pnoXBCZM/BwqXTKzHJ0XYU1RaBWWfHO229S47rXYZLpZuC7DHBjkN Q=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AjIFAAKvuVOtJA2H/2dsb2JhbABagmokgSzGLAGBDBZ1hAMBAQEDATo/BQsCAQgiFBAyJQIEDg0TiB8IAck+F45AEQEfMQeDLYEWAQSWXJgmg0OBbgcCFyI X-IronPort-AV: E=Sophos;i="5.01,613,1400025600"; d="scan'208";a="338072732" Received: from alln-core-2.cisco.com ([173.36.13.135]) by rcdn-iport-3.cisco.com with ESMTP; 06 Jul 2014 20:21:23 +0000 Received: from xhc-rcd-x14.cisco.com (xhc-rcd-x14.cisco.com [173.37.183.88]) by alln-core-2.cisco.com (8.14.5/8.14.5) with ESMTP id s66KLNKZ014967 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Sun, 6 Jul 2014 20:21:23 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-rcd-x14.cisco.com ([173.37.183.88]) with mapi id 14.03.0123.003; Sun, 6 Jul 2014 15:21:23 -0500 From: "Nobo Akiya (nobo)" To: Sam Aldrin Thread-Topic: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 Thread-Index: Ac+Kbg0JI45wiuB+QkmRpWOTfjvnXAAAEROQAn/CxAAAtFWXAAAHKr7g///9lQD//1TMQIACjhEA//5nzTCABAKJgIAAUzVQ Date: Sun, 6 Jul 2014 20:21:22 +0000 Message-ID: References: <4A79394211F1AF4EB57D998426C9340D946A9035@US70UWXCHMBA01.zam.alcatel-lucent.com> <4A79394211F1AF4EB57D998426C9340D946C86F6@US70UWXCHMBA01.zam.alcatel-lucent.com> <9EB527EE-2C56-405D-9340-88A3184A48CA@gmail.com> <3ECD02EE-71E6-4AC5-BBB5-CC0C354219B0@gmail.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.249.185] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/NvjyB2QXpa8BpTPgc50X9wEGp_M Cc: "mpls@ietf.org" , "Jeffrey \(Zhaohui\) Zhang" , Ross Callon , "draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org" , "mpls-chairs@tools.ietf.org" , "jeremy.whittaker@verizon.com" Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 06 Jul 2014 20:21:25 -0000 Hi Sam, > Not sure if the email you send was with reply mode 1 or with new TLV :D. It was actually a Reply Mode Order TLV containing [new TLV, reply mode 1], = so you did the right thing :) > As far as my concerns regarding the ID is concerned, would be good to > illustrate with example lsp's, be it TP or LDP or something else, it is s= olving. > And quantifying the solution to show it really is required that existing > solutions could not solve it, would help WG. That will indeed be a good addition to this document. We will add texts for= this in the next revision. Thanks! -Nobo From nobody Mon Jul 7 05:59:55 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B00BF1A0008 for ; Mon, 7 Jul 2014 05:59:48 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.602 X-Spam-Level: X-Spam-Status: No, score=-2.602 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qhZN41-sHFPp for ; Mon, 7 Jul 2014 05:59:39 -0700 (PDT) Received: from na01-by2-obe.outbound.protection.outlook.com (mail-by2lp0235.outbound.protection.outlook.com [207.46.163.235]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 423301A0016 for ; Mon, 7 Jul 2014 05:59:38 -0700 (PDT) Received: from BL2PR05MB066.namprd05.prod.outlook.com (10.255.232.19) by BL2PR05MB081.namprd05.prod.outlook.com (10.255.232.14) with Microsoft SMTP Server (TLS) id 15.0.974.11; Mon, 7 Jul 2014 12:59:37 +0000 Received: from BL2PR05MB066.namprd05.prod.outlook.com ([169.254.1.235]) by BL2PR05MB066.namprd05.prod.outlook.com ([169.254.1.235]) with mapi id 15.00.0980.000; Mon, 7 Jul 2014 12:59:36 +0000 From: "Jeffrey (Zhaohui) Zhang" To: "Nobo Akiya (nobo)" , Ross Callon , "Aissaoui, Mustapha (Mustapha)" , "jeremy.whittaker@verizon.com" , "Harish Sitaraman" , Kapil Arora Thread-Topic: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 Thread-Index: AQHPlZCybt2Cc0J7zEWW/WrS22Yy6JuUmreA Date: Mon, 7 Jul 2014 12:59:36 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [66.129.241.12] x-microsoft-antispam: BCL:0;PCL:0;RULEID: x-forefront-prvs: 02652BD10A x-forefront-antispam-report: SFV:NSPM; SFS:(6009001)(377454003)(199002)(189002)(51704005)(41574002)(164054003)(77096002)(85306003)(19580395003)(80022001)(64706001)(76482001)(83322001)(66066001)(19580405001)(21056001)(99286002)(74502001)(105586002)(106116001)(81542001)(4396001)(107046002)(106356001)(101416001)(86362001)(50986999)(81342001)(87936001)(54356999)(77982001)(33646001)(99396002)(76176999)(20776003)(46102001)(2656002)(85852003)(76576001)(79102001)(83072002)(74316001)(95666004)(55754002)(108616002)(24736002); DIR:OUT; SFP:; SCL:1; SRVR:BL2PR05MB081; H:BL2PR05MB066.namprd05.prod.outlook.com; FPR:; MLV:sfv; PTR:InfoNoRecords; MX:1; LANG:en; Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: juniper.net Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/BPG4KR-HHvPamymuajkq4Ch_-u0 Cc: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org" Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Jul 2014 12:59:48 -0000 Nobo, Sorry for the late response. Holidays. I am not sure if it is necessary to have the flexibility of (2), but it is = always good to have the flexibility if it does not introduce much complexit= y. If we allow multiple mode 5, then (2) is achieved. I'll leave this up to you. Jeffrey > -----Original Message----- > From: Nobo Akiya (nobo) [mailto:nobo@cisco.com] > Sent: Tuesday, July 01, 2014 8:58 PM > To: Jeffrey (Zhaohui) Zhang; Ross Callon; Aissaoui, Mustapha (Mustapha); > jeremy.whittaker@verizon.com; Harish Sitaraman; Kapil Arora > Cc: mpls@ietf.org; mpls-chairs@tools.ietf.org; draft-akiya-mpls-lsp- > ping-reply-mode-simple@tools.ietf.org > Subject: RE: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply- > mode-simple-02 >=20 > Hi Jeffrey, >=20 > Thank you for reviewing this document. >=20 > > I do have one suggestion - could we allow multiple return paths to be > > specified via multiple "Replay Mode 5" in the new "Reply Mode Order > TLV" > > and multiple Reply Path TLVs (currently it is not allowed). >=20 > Interesting, I do find what you suggested to be useful. I went back to > RFC7110 and read up on the Reply Path TLV definition. The TLV can > contain zero, one or more FECs. >=20 > Reply Path: It is used to describe the return path that an echo > reply will be send along. It is variable in length and can > contain zero, one or more Target FEC sub-TLVs [RFC4379]. >=20 > So it appears that "Reply Mode 5" can be one of the entries in the > "Reply Mode Order TLV", and "Reply Path TLV" can contain multiple FECs. >=20 > (1) What is possible as is: > Pref#1: Reply Mode 4 Reply via application level control channel > Pref#2a: Reply Mode 5 Reply via Specified Path -> First FEC listed > Pref#2b: Reply Mode 5 Reply via Specified Path -> Second FEC listed > Pref#3: Reply Mode 2 Reply via an IPv4/IPv6 UDP packet >=20 > (2) What is not possible as is: > Pref#1: Reply Mode 4 Reply via application level control channel > Pref#2: Reply Mode 5 Reply via Specified Path -> First FEC listed > Pref#3: Reply Mode 2 Reply via an IPv4/IPv6 UDP packet > Pref#4: Reply Mode 5 Reply via Specified Path -> Second FEC listed >=20 > Granularity of really mixing up Reply Modes and return FECs like (2) > cannot be accomplished, but I'm not sure if we need such granularity and > I believe (1) is reasonable. If you are ok with this, then I think it's > worth adding texts to describe this usages. Do let us know you > preference. >=20 > Thanks! >=20 > -Nobo >=20 >=20 > > -----Original Message----- > > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Jeffrey > (Zhaohui) > > Zhang > > Sent: Tuesday, July 01, 2014 12:08 PM > > To: Ross Callon; Aissaoui, Mustapha (Mustapha); > > jeremy.whittaker@verizon.com; Harish Sitaraman; Kapil Arora > > Cc: mpls@ietf.org; mpls-chairs@tools.ietf.org; draft-akiya-mpls-lsp- > ping- > > reply-mode-simple@tools.ietf.org > > Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply- > > mode-simple-02 > > > > I have reviewed the draft and believe it is ready for WG adoption > > consideration. > > > > I do have one suggestion - could we allow multiple return paths to be > > specified via multiple "Replay Mode 5" in the new "Reply Mode Order > TLV" > > and multiple Reply Path TLVs (currently it is not allowed). > > > > Thanks. > > Jeffrey > > _____________________________________________ > > From: Ross Callon > > Sent: Tuesday, June 17, 2014 4:52 PM > > To: Jeffrey (Zhaohui) Zhang; Aissaoui, Mustapha (Mustapha); > > jeremy.whittaker@verizon.com > > Cc: draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org; mpls- > > chairs@tools.ietf.org; Martin Vigoureux > > Subject: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode- > simple- > > 02 > > > > > > Jeff, Mustapha, Jeremy; > > > > You have been selected as MPLS Review team reviewers for draft-akiya- > > mpls-lsp-ping-reply-mode-simple-02. > > > > Note to authors: You have been CC'd on this email so that you can know > that > > this review is going on. However, please do not review your own > document. > > Also please don't update the draft while the reviews are in progress > (we > > would like the reviewers to all review the same version). > > > > Reviews should comment on whether the document is coherent, is it > useful > > (ie, is it likely to be actually useful in operational networks), and > is the > > document technically sound?=A0 Also, is the text and grammar > understandable > > (it doesn't need to be perfect at this point, but should be reasonably > clear). > > We are interested in knowing whether the document is ready to be > > considered for WG adoption (ie, it doesn't have to be perfect at this > point, > > but should be a good start). > > > > Reviews should be sent to the document authors, WG co-chairs and WG > > secretary, and CC'd to the MPLS WG email list. If necessary, Comments > may > > be sent privately to only the WG chairs. > > > > Are you able to review this draft by July 2, 2014? > > > > Thanks, Ross > > (as MPLS WG chair) > > From nobody Mon Jul 7 06:59:27 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C7BC01A006D for ; Mon, 7 Jul 2014 06:59:25 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.551 X-Spam-Level: X-Spam-Status: No, score=-2.551 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.651] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id JZXeEq6ejVMR for ; Mon, 7 Jul 2014 06:59:24 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 10CA11A00E6 for ; Mon, 7 Jul 2014 06:59:23 -0700 (PDT) Received: from [192.168.0.111] (81-229-83-119-no65.business.telia.com [81.229.83.119]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 19EC81802B24; Mon, 7 Jul 2014 15:59:21 +0200 (CEST) Message-ID: <53BAA7BA.2060903@pi.nu> Date: Mon, 07 Jul 2014 15:59:22 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , Adrian Farrel Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/INX0GVGY4wxxduLBNMYdZFsMbaw Cc: "draft-bryant-mpls-oam-udp-return@tools.ietf.org" Subject: [mpls] Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Jul 2014 13:59:26 -0000 Working Group, The authors of draft-bryant-mpls-oam-udp-return has informed us that the draft is ready to be polled to see if we have consensus to make it a working group document. This mail starts a two week adoption poll. We have not yet done the IPR poll, it will be done in parallel to the adoption poll. There are no IPR disclosed against this draft. Please send your comments to the mpls working group mailing list (mpls@ietf.org) This adoption poll ends Juli 21, 2014! /Loa for the mpls wg co-chairs -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Mon Jul 7 07:12:53 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8E1DB1A01A8 for ; Mon, 7 Jul 2014 07:12:51 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.551 X-Spam-Level: X-Spam-Status: No, score=-2.551 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.651] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2dPmyIZun6El for ; Mon, 7 Jul 2014 07:12:50 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 664821A0163 for ; Mon, 7 Jul 2014 07:12:50 -0700 (PDT) Received: from [192.168.0.111] (81-229-83-119-no65.business.telia.com [81.229.83.119]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 1E85C1802B24; Mon, 7 Jul 2014 16:12:49 +0200 (CEST) Message-ID: <53BAAAE2.2020206@pi.nu> Date: Mon, 07 Jul 2014 16:12:50 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls@ietf.org" Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/Si0waLluoFei1yGP0k--52NHEt0 Cc: "draft-bryant-mpls-oam-udp-return@tools.ietf.org" , "mpls-chairs@tools.ietf.org" Subject: [mpls] IPR poll on draft-bryant-mpls-oam-udp-return X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Jul 2014 14:12:51 -0000 Working Group, This is to start an IPR poll on draft-bryant-mpls-oam-udp-return. Are you aware of any IPR that applies to draft-bryant-mpls-oam-udp-return? If so, has this IPR been disclosed in compliance with IETF IPR rules (see RFCs 3979, 4879, 3669 and 5378 for more details). Currently there are no IPR disclosures that relates to this document. If you are listed as a document author or contributor please respond to this email regardless of whether or not you are aware of any relevant IPR. *The response needs to be sent to the MPLS wg mailing list.* The document will not advance to the next stage until a response has been received from each author and contributor. If you are on the MPLS WG email list but are not listed as an author or contributor, then please explicitly respond only if you are aware of any IPR that has not yet been disclosed in conformance with IETF rules. Thanks, Loa (as MPLS WG co-chair) -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Mon Jul 7 08:23:56 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 62CBB1A0166 for ; Mon, 7 Jul 2014 08:23:54 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.552 X-Spam-Level: X-Spam-Status: No, score=-14.552 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, J_CHICKENPOX_31=0.6, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id eQqJmMYjWWe4 for ; Mon, 7 Jul 2014 08:23:51 -0700 (PDT) Received: from rcdn-iport-7.cisco.com (rcdn-iport-7.cisco.com [173.37.86.78]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 38B2E1A0066 for ; Mon, 7 Jul 2014 08:23:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=13904; q=dns/txt; s=iport; t=1404746631; x=1405956231; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=57Y6dpb2SiDisRtT7J+eHgPC2P+399oMhlbpflnL4Us=; b=YZkelMNvOTo51u0sdtX7Ko1o3GRhNfob2aJ6IdYRgRkEV9S4Y9C014r5 /igF+rI306QW9U6x5jafvO4c/leL56k+I6+DDae5sU+jHogA/r1hx9Gqk 2hkTD8vGzp+hPTrPru9Z7QC3BdDkHBXiwD89IgZujh/oo5OvyX2tapFCL w=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AhQFAOu6ulOtJV2S/2dsb2JhbABQCoMOUk0NvneHRQGBFhZ1hAMBAQEEAQEBawkCDAQCAQgRBAEBAScHJwsUCQgCBA4FCYg5DcoJF45GKQgrBwIEhD0FiheQX4FIkkSDQ4FwJBw X-IronPort-AV: E=Sophos;i="5.01,618,1400025600"; d="scan'208";a="338190877" Received: from rcdn-core-10.cisco.com ([173.37.93.146]) by rcdn-iport-7.cisco.com with ESMTP; 07 Jul 2014 15:23:50 +0000 Received: from xhc-rcd-x08.cisco.com (xhc-rcd-x08.cisco.com [173.37.183.82]) by rcdn-core-10.cisco.com (8.14.5/8.14.5) with ESMTP id s67FNoNG024492 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL) for ; Mon, 7 Jul 2014 15:23:50 GMT Received: from xmb-rcd-x03.cisco.com ([169.254.7.65]) by xhc-rcd-x08.cisco.com ([173.37.183.82]) with mapi id 14.03.0123.003; Mon, 7 Jul 2014 10:23:49 -0500 From: "Nagendra Kumar Nainar (naikumar)" To: "Nobo Akiya (nobo)" Thread-Topic: New Version Notification for draft-akiya-mpls-lsp-ping-lag-multipath-00.txt Thread-Index: AQHPh0sKZ/vjNgoGA02gD6R1/DNUlZtviMsAgAAGuSCAAWXvgIAMTauggBet8gA= Date: Mon, 7 Jul 2014 15:23:49 +0000 Message-ID: References: <20140613210400.13388.18750.idtracker@ietfa.amsl.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.4.2.140509 x-originating-ip: [10.21.146.59] Content-Type: text/plain; charset="iso-8859-1" Content-ID: <77EED41B03345348AAD01A10848EBD0D@emea.cisco.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/OSk1871qbbYhkx1bOWil7d9KbO4 Cc: "mpls@ietf.org" Subject: Re: [mpls] New Version Notification for draft-akiya-mpls-lsp-ping-lag-multipath-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Jul 2014 15:23:54 -0000 Hi Nobo, Apologies for the delay. Please see below: >Hi Nagendra, > >> -----Original Message----- >> From: Nagendra Kumar Nainar (naikumar) >> Sent: Saturday, June 14, 2014 1:54 PM >> To: Nobo Akiya (nobo) >> Subject: Re: New Version Notification for draft-akiya-mpls-lsp-ping-lag- >> multipath-00.txt >>=20 >> Hi Nobo, >>=20 >> As usual, interesting draft. Please see below for initial comments, > >Thank you for comments, and thank you for agreeing to allow me to include >the MPLS WG in this response. > >I'm glad you found this document to be interesting. Although it became a >bit more complicated that I was originally hoping. However, this >extension add a great value to a tool which can be part of the something >larger to "fight" the traffic black hole happening on MPLS networks :) >=20 >>=20 >> From section 3, It appears that responder MUST set the LAG Info TLV. Is >>it the >> case even if the downstream is not LAG?. Or did you meant that if the >> responder have LAG based donwstream interface, then it MUST include the >> TLV?. > >First bullet in the last portion of the Section 3 was exactly to explain >why this is a MUST, but clearly additional text will be helpful. How >about we update the bullet: > >[old] > o Identify whether responder LSR understands this mechanism. > >[new] > o Mandating the responder to always add the LAG Interface Info TLV > in the MPLS echo reply allows the initiating LSR to identify > whether responder LSR understands this mechanism. I am trying to understand the behavior when a responder wants back to echo received with LAG Interface Info TLV. In figure 1, assume there is one more node connected to E (say F) and A wants to trace the path from A to F (via A-B-LAG-C-E-F). When C receives thhe echo with LAG interface Info TLV, since it doenst have any upstream/downstream LAG interface, will it still include the TLV in reply?. If so, is it like it unset both U/D bit?. > >>=20 >>=20 >> In Section, I am trying to understand what does the below means, >>=20 >> "All fields and Sub-TLVs, except for Multipath Data Sub-TLV and >> Interface Index Sub-TLV, are set/added to DDMAP to describe >> this LAG interface, as per [RFC6424]. >> " >>=20 >> The above statement followed by statement to add "Interface Index Sub- >> TLV" >> appears to be confusing. > >I see. Perhaps re-wording it can help clarify things. How about something >like this? > >[old] > * All fields and Sub-TLVs, except for Multipath Data Sub-TLV and > Interface Index Sub-TLV, are set/added to DDMAP to describe > this LAG interface, as per [RFC6424]. > >[new] > * In the DDMAP, Multipath Data Sub-TLV and Interface Index Sub- > TLV are to describe each LAG member link. All other fields of > the DDMAP are to describe the LAG interface. Sounds good. > >>=20 >>=20 >> In section 3, the below 2 statements appears to be redundant. Do we >>really >> need both?. >>=20 >> "* For each LAG member link of this LAG interface: >>=20 >> + MUST add Interface Index Sub-TLV (described in Section 7) >> with LAG Member Link Indicator flag set in Interface Index >> Flags, describing this LAG member link. >>=20 >> + MUST add Multipath Data Sub-TLV for this LAG member link, if >> received DDMAP requested multipath information. >>=20 >> Each LAG member link is described with Interface Index Sub-TLV and >> conditionally with Multipath Data Sub-TLV (if multipath information >> is requested). " > >True. Let me re-word this one too. > >[old] > Each LAG member link is described with Interface Index Sub-TLV and > conditionally with Multipath Data Sub-TLV (if multipath information > is requested). If both Sub-TLVs are placed in the DDMAP to describe > a LAG member link, Interface Index Sub-TLV MUST be added first with > Multipath Data Sub-TLV immediately following. > >[new] > When both the Interface Index Sub-TLV and the Multipath Data Sub-TLV > is placed in the DDMAP to describe a LAG member link, Interface Index > Sub-TLV MUST be added first with Multipath Data Sub-TLV immediately > following. Sounds good. > >>=20 >>=20 >> Section 4 says the inclusion of Detailed interface TLV is a MUST while >> section 8 sys it is a MAY statement as below, >>=20 >> section 4: >> " >> Responder LSR MUST: >>=20 >> o Add LAG Interface Info TLV in the MPLS echo reply to provide >> acknowledgement back to the initiator. Upstream LAG Info >> Accommodation flag MUST be set in LAG Interface Info Flags. >>=20 >> o Add the Detailed Interface and Label Stack TLV (described in >> Section 8) in the MPLS echo reply. >> " >>=20 >> section 8: >> "The Detailed Interface and Label Stack object is a TLV that MAY be >> included in a MPLS echo reply message to report the interface on >> which the MPLS echo request message was received and the label stack >> that was on the packet when it was received. A responder LSR MUST >> NOT insert more than one instance of this TLV. " >>=20 > >Right, perhaps above snippet being preceded by the initiating LSR sending >the MPLS echo request with DS Flags I bit set is not sufficient to elude >that responder is functioning with an assumption that it needs to include >interface/label-stack TLV. Let me change some texts: > >[old] > o Add the Detailed Interface and Label Stack TLV (described in > Section 8) in the MPLS echo reply. > > o Add the Incoming Interface Index Sub-TLV (described in > Section 8.1.2) for LAG interfaces. The LAG Member Link Indicator > flag MUST be set in Interface Index Flags, and the incoming > Interface Index set to LAG member link which received the MPLS > echo request. > >[new] > o When the received DDMAP had DS Flags I set, add the Detailed > Interface and Label Stack TLV (described in Section 8) in the MPLS > echo reply. > > o When the received DDMAP had DS Flags I set, add the Incoming > Interface Index Sub-TLV (described in Section 8.1.2) for LAG > interfaces. The LAG Member Link Indicator flag MUST be set in > Interface Index Flags, and the incoming Interface Index set to LAG > member link which received the MPLS echo request. Ok. > >>=20 >>=20 >> Section 7 specifies as below, >> "The Interface Index Sub-TLV describes the index assigned by the >> upstream LSR to the interface." >>=20 >> Can you also point some reference to what type of index is it?. Is it >> something assigned and advertised by LAG protocol like LACP or PAGP?. > >It's a locally allocated persistent index for local interfaces. It may or >may not be advertised, and that's not really important for this context. >We are just interested in getting a unique value (local to that node) >that identifies a specific interface. I could add more texts, but the >description on this sub-TLV was mostly ported from RFC4379. I think it's >ok as is. Ok. So the responder will include the locally assigned index value (of the egress interface) to this Sub-TLV and reply back. So should we modify the below statement?, "The Interface Index Sub-TLV describes the index assigned by the upstream LSR to the interface.=B2 I think it is not the upstream LSR to the interface right?. > >>=20 >> In association to above, Section 4 states the below, >>=20 >> "Note that defined procedures will provide a deterministic result for >> LAG interfaces that are back-to-back connected between routers (i.e. >> no L2 switch in between). If there is a L2 switch between LSR at >> TTL=3Dn and LSR at TTL=3Dn+1, there is no guarantee that traversal of >> every LAG member link at TTL=3Dn will result in reaching different >> interface index at TTL=3Dn+1." >>=20 >> When there is L2 switch(es) in between, the LAG termination/negotiation >> wil be between the LSR and L2 switch and so we may need some way to >> exchange the Interface Index for each LAG member via L2 switch to be >> exchanged between the LSRs. I am not aware of such exchange. If I am >> missing something, I think it is worth referring the same for clarity :) > >That is exactly why L2-in-between is outside the scope of this document >:) Appendix A describes various flavors and why it is complicated to >extend support for those flavors. Ok. > >>=20 >> Does the below sounds like a (direct) SHOULD statement? >>=20 >> "If the responder LSR is able to accommodate this request, >> then the LAG Interface Info object MUST be included in the MPLS echo >> reply message." >>=20 >> In the below topology, >>=20 >> +-------+ >> | | >> A-------B=3D=3D=3D=3D=3D=3D=3DC-------E >> | | | >> +-------D-------G >>=20 >> Assume A is validating all ECMP paths from A to G. Assume the metric >>from >> B to D is 2 and rest all link are 1. So it will be >>=20 >> A-B-LAG-C-E-G >> A-B-LAG-C-D-G >> A-B-D-G >>=20 >> Assume the list of multipath data is (1-10) >>=20 >> Now B will reply as below, >>=20 >> (1,2,3) - {Link1, Downstream:C} >> (4,5,6) - {Link2 Downstream:C} >> (7,8,9,10) - {LinkBC, Downstream:D} >>=20 >> A will then send 2 request as below: >>=20 >> Echo1 (to C) - (multipath:1,2,3,4,5,6), >> Echo2 (to D) - (multipath:7,8,9,10) >>=20 >> C will reply back with >>=20 >> (1,2,3) - {LinkCE, Downstream E} >> (4,5,6) - {LinkCD, Downstream D} >>=20 >> So we dont have anything common between Link2 of LAG and downtream E. >> Similarly we dont have anyhting common between Link1 of LAG and >> downstream D (from C). I think we need the downstream node of LAG to >> reply back with multipath info for each downstream from each LAG range. >> Any thoughts?. > >The main problem with above example is that the range of multipath info >is too small, thus you ran out of intersect in the downstream. >Additionally, if I was to implement this, then I would not carry over >treating each LAG member link separately in the LSP Tree Trace >operations, once TTL=3Dn+1 is reached. Once LAG merges to a same downstrea= m >node, then I would aggregate the result and move forward in the >downstream (i.e. treat the LAG as one logical interface). Ok. Let me check this. Thanks, Nagendra > >Thanks! > >-Nobo > >>=20 >> Thanks, >> Nagendra >>=20 >>=20 >>=20 >>=20 >> On 6/13/14, 5:33 PM, "Nobo Akiya (nobo)" wrote: >>=20 >> >FYI, new LSP Ping extension draft. >> > >> >> -----Original Message----- >> >> From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Nobo Akiya >> >> (nobo) >> >> Sent: Friday, June 13, 2014 5:15 PM >> >> To: mpls@ietf.org >> >> Subject: [mpls] FW: New Version Notification for >> >>draft-akiya-mpls-lsp-ping- >> >> lag-multipath-00.txt >> >> >> >> Dear MPLS WG, >> >> >> >> On MPLS data plane, one aspect which OAM is blind to traffic black >> >>holing is when LSPs are traversing over LAG interfaces. We would like >> >>to propose an extension to RFC4379 to provide the tool an ability to >> >>discover and traverse LAG members. >> >> >> >> It will be very helpful if you could review this document, provide >> >>comments and help us standardize this extension. >> >> >> >> Thanks! >> >> >> >> -Nobo, on behalf of authors >> >> >> >> > -----Original Message----- >> >> > From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org] >> >> > Sent: Friday, June 13, 2014 5:04 PM >> >> > To: John E. Drake; Nobo Akiya (nobo); George Swallow (swallow); >> >> > George Swallow (swallow); Bruno Decraene; Stephane Litkowski; Bruno >> >> > Decraene; Nobo Akiya (nobo); John Drake; Stephane Litkowski >> >> > Subject: New Version Notification for >> >> > draft-akiya-mpls-lsp-ping-lag- multipath-00.txt >> >> > >> >> > >> >> > A new version of I-D, >> >> > draft-akiya-mpls-lsp-ping-lag-multipath-00.txt >> >> > has been successfully submitted by Nobo Akiya and posted to the >> >> > IETF repository. >> >> > >> >> > Name: draft-akiya-mpls-lsp-ping-lag-multipath >> >> > Revision: 00 >> >> > Title: Label Switched Path (LSP) Ping/Trace Multipath >> Support for >> >> > Link Aggregation Group (LAG) Interfaces >> >> > Document date: 2014-06-13 >> >> > Group: Individual Submission >> >> > Pages: 18 >> >> > URL: >> >>http://www.ietf.org/internet-drafts/draft-akiya-mpls-lsp-ping- >> >> > lag-multipath-00.txt >> >> > Status: >> >>https://datatracker.ietf.org/doc/draft-akiya-mpls-lsp-ping-lag- >> >> > multipath/ >> >> > Htmlized: >> >>http://tools.ietf.org/html/draft-akiya-mpls-lsp-ping-lag- >> >> > multipath-00 >> >> > >> >> > >> >> > Abstract: >> >> > This document defines an extension to the Multiprotocol Label >> >> > Switching (MPLS) Label Switched Path (LSP) Ping and Traceroute >>to >> >> > describe Multipath Information for Link Aggregation (LAG) member >> >> > links separately, thus allowing MPLS LSP Ping and Traceroute to >> >> > discover and exercise specific paths of layer 2 Equal-Cost >> >>Multipath >> >> > (ECMP) over LAG interfaces. >> >> > >> >> > This document updates RFC4379 and RFC6424. >> >> > >> >> > >> >> > >> >> > >> >> > >> >> > Please note that it may take a couple of minutes from the time of >> >> > submission until the htmlized version and diff are available at >> >> tools.ietf.org. >> >> > >> >> > The IETF Secretariat >> >> >> >> _______________________________________________ >> >> mpls mailing list >> >> mpls@ietf.org >> >> https://www.ietf.org/mailman/listinfo/mpls > From nobody Mon Jul 7 08:27:01 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5184D1A0104 for ; 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bh=1il5aMlkRdE0zRtAXnxYzGHN+WZD3U8nkn6FNY8FczY=; b=U54W2vvRWCsKPeNHeyTp2cYfjsREyCfHzgeDfRT1TEGa7tUiCc3JRUjc oXTedvz2cdY8RPEiiMRQLOl0v4jhh1IYKTLRgAij+cQqlAPycTupPrY07 91WV6EvqaxRbFcyOHM+R0njVerH5qpOgkfk8l3+GWRUQ9LZSFx+sd06qA 0=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AqIEABS8ulOtJssW/2dsb2JhbABag2DHFgGBLXWEAwEBAQQ4NgYEARALGAkWDwkDAgECAUUGAQwBBwEBiD4NtyGSZxeOQBEBUAeEQwEEmnaUDINEa4EL X-IronPort-AV: E=Sophos;i="5.01,618,1400025600"; d="scan'208";a="106051591" Received: from aer-iport-nat.cisco.com (HELO aer-core-1.cisco.com) ([173.38.203.22]) by aer-iport-2.cisco.com with ESMTP; 07 Jul 2014 15:26:56 +0000 Received: from cisco.com (mrwint.cisco.com [64.103.70.36]) by aer-core-1.cisco.com (8.14.5/8.14.5) with ESMTP id s67FQuBD001063 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 7 Jul 2014 15:26:56 GMT Received: from STBRYANT-M-R010.CISCO.COM (localhost [127.0.0.1]) by cisco.com (8.14.4+Sun/8.8.8) with ESMTP id s67FQsMk017305; Mon, 7 Jul 2014 16:26:54 +0100 (BST) Message-ID: <53BABC3E.6020702@cisco.com> Date: Mon, 07 Jul 2014 16:26:54 +0100 From: Stewart Bryant User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: Loa Andersson , "mpls@ietf.org" References: <53BAAAE2.2020206@pi.nu> In-Reply-To: <53BAAAE2.2020206@pi.nu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/C2s-ZBA1JZfCP9EeY8W2TqRLM3I Cc: "draft-bryant-mpls-oam-udp-return@tools.ietf.org" , "mpls-chairs@tools.ietf.org" Subject: Re: [mpls] IPR poll on draft-bryant-mpls-oam-udp-return X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: stbryant@cisco.com List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Jul 2014 15:27:00 -0000 I am not aware of any relevant IPR. Stewart On 07/07/2014 15:12, Loa Andersson wrote: > Working Group, > > This is to start an IPR poll on draft-bryant-mpls-oam-udp-return. > > Are you aware of any IPR that applies to > draft-bryant-mpls-oam-udp-return? > > If so, has this IPR been disclosed in compliance with IETF IPR rules > (see RFCs 3979, 4879, 3669 and 5378 for more details). > > Currently there are no IPR disclosures that relates to this document. > > If you are listed as a document author or contributor please respond to > this email regardless of whether or not you are aware of any relevant > IPR. *The response needs to be sent to the MPLS wg mailing list.* The > document will not advance to the next stage until a response has been > received from each author and contributor. > > If you are on the MPLS WG email list but are not listed as an author or > contributor, then please explicitly respond only if you are aware of any > IPR that has not yet been disclosed in conformance with IETF rules. > > Thanks, Loa > (as MPLS WG co-chair) -- For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/index.html From nobody Mon Jul 7 08:33:56 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 67D7D1A0303 for ; Mon, 7 Jul 2014 08:33:55 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -15.152 X-Spam-Level: X-Spam-Status: No, score=-15.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id TJQuXz4l9Wpt for ; Mon, 7 Jul 2014 08:33:54 -0700 (PDT) Received: from rcdn-iport-2.cisco.com (rcdn-iport-2.cisco.com [173.37.86.73]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id E9AD71A01EA for ; Mon, 7 Jul 2014 08:33:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2006; q=dns/txt; s=iport; t=1404747235; x=1405956835; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=MiFb+8oabvYln1GnKpJUSi+diTp0HF6wzwoG7/qWwPM=; b=bEipeY63GGFdbQdPguzJ+5nPIbd1o0EoAC0I+poD/cPTucnrAYCn7jhr 93I56HvRK3cvOrpS/UsZ2wIcVOARMCfbMC7lki2VjIbJHhnzKS70/HsSx DDIOfm6ELSzEJWt9l2FsIHnoznwFJvdJuzCsHoYqpY5Gk1pMZ01n9r5Rd M=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AhIFAIm9ulOtJA2G/2dsb2JhbABagw5SWsY8AYEXFnWEAwEBAQQ6NAYFDAQCAQgRBAEBAQoUEDIdCAIEAQ0FCIg6DcoLF45AEQEfDyICBQaDJ4EWBa8Cg0NsgQs5 X-IronPort-AV: E=Sophos;i="5.01,618,1400025600"; d="scan'208";a="338194638" Received: from alln-core-12.cisco.com ([173.36.13.134]) by rcdn-iport-2.cisco.com with ESMTP; 07 Jul 2014 15:33:54 +0000 Received: from xhc-aln-x06.cisco.com (xhc-aln-x06.cisco.com [173.36.12.80]) by alln-core-12.cisco.com (8.14.5/8.14.5) with ESMTP id s67FXrsw004470 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Mon, 7 Jul 2014 15:33:53 GMT Received: from xmb-rcd-x13.cisco.com ([169.254.3.17]) by xhc-aln-x06.cisco.com ([173.36.12.80]) with mapi id 14.03.0123.003; Mon, 7 Jul 2014 10:33:53 -0500 From: "Siva Sivabalan (msiva)" To: "Sagar Soni (sagsoni)" , "Stewart Bryant (stbryant)" , Loa Andersson , "mpls@ietf.org" Thread-Topic: IPR poll on draft-bryant-mpls-oam-udp-return Thread-Index: AQHPme2LE+xfcyNUEkCclZVctJtRGZuVD7oAgAABlQD//6xlIA== Date: Mon, 7 Jul 2014 15:33:52 +0000 Message-ID: References: <53BAAAE2.2020206@pi.nu> <53BABC3E.6020702@cisco.com> <5A656B747213994CB6A9D09D7B4AA9C519A4DD3A@xmb-rcd-x13.cisco.com> In-Reply-To: <5A656B747213994CB6A9D09D7B4AA9C519A4DD3A@xmb-rcd-x13.cisco.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.242.58] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/zc_whdSQF6mM6gKXEWxQ6hIZUis Cc: "draft-bryant-mpls-oam-udp-return@tools.ietf.org" , "mpls-chairs@tools.ietf.org" Subject: Re: [mpls] IPR poll on draft-bryant-mpls-oam-udp-return X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Jul 2014 15:33:55 -0000 I am not aware of any IPR related to this draft. Thanks, Siva -----Original Message----- From: Sagar Soni (sagsoni)=20 Sent: Monday, July 07, 2014 11:33 AM To: Stewart Bryant (stbryant); Loa Andersson; mpls@ietf.org Cc: draft-bryant-mpls-oam-udp-return@tools.ietf.org; mpls-chairs@tools.ietf= .org; VIGOUREUX, MARTIN (MARTIN) Subject: RE: IPR poll on draft-bryant-mpls-oam-udp-return I am also not aware of IPR related to this draft. Thanks, Sagar -----Original Message----- From: Stewart Bryant (stbryant) Sent: Monday, July 07, 2014 11:27 AM To: Loa Andersson; mpls@ietf.org Cc: draft-bryant-mpls-oam-udp-return@tools.ietf.org; mpls-chairs@tools.ietf= .org; VIGOUREUX, MARTIN (MARTIN) Subject: Re: IPR poll on draft-bryant-mpls-oam-udp-return I am not aware of any relevant IPR. Stewart On 07/07/2014 15:12, Loa Andersson wrote: > Working Group, > > This is to start an IPR poll on draft-bryant-mpls-oam-udp-return. > > Are you aware of any IPR that applies to=20 > draft-bryant-mpls-oam-udp-return? > > If so, has this IPR been disclosed in compliance with IETF IPR rules=20 > (see RFCs 3979, 4879, 3669 and 5378 for more details). > > Currently there are no IPR disclosures that relates to this document. > > If you are listed as a document author or contributor please respond=20 > to this email regardless of whether or not you are aware of any=20 > relevant IPR. *The response needs to be sent to the MPLS wg mailing > list.* The document will not advance to the next stage until a=20 > response has been received from each author and contributor. > > If you are on the MPLS WG email list but are not listed as an author=20 > or contributor, then please explicitly respond only if you are aware=20 > of any IPR that has not yet been disclosed in conformance with IETF rules= . > > Thanks, Loa > (as MPLS WG co-chair) -- For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/index.html From nobody Mon Jul 7 11:03:32 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id BD1661A0535 for ; Mon, 7 Jul 2014 11:03:29 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2W-8xdglZUjw for ; Mon, 7 Jul 2014 11:03:27 -0700 (PDT) Received: from mail-qc0-x236.google.com (mail-qc0-x236.google.com [IPv6:2607:f8b0:400d:c01::236]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 7AC0A1A03C0 for ; Mon, 7 Jul 2014 11:03:27 -0700 (PDT) Received: by mail-qc0-f182.google.com with SMTP id m20so4114449qcx.27 for ; Mon, 07 Jul 2014 11:03:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type; bh=zoX9rgk7afGZUZGA4s0b4/ps+STHfvUXLnSuo1mba0A=; b=PWbhNJjPrnOuB/OgRbrggXdWIcQApscduRkwE7j9wDcuZhl55T/YGVqRAY5+jB60rM EcqT1ldEbDlWoA+Py6D81CAzPIuqmZvFxMIeHHZZi+nhDWiYw+Jt2I/U4iDL4/N+MU6Q vFfE/krRXUPkv0IhUKO1mIMwEVtDkOxevdoZpAyOlPVyBp2fJLW6Tu8fFasArw24kA9q fGO9WxlMC5xLfsntMaL5ByRJElLH5SVztk9ck32cr1L6Tenz8KJfaSbzoeWzEArEkG8T oFDrTv+Bg/mAUA7CfAbZPQBcAOpS9fB24mSzypMP67mXqDrU4pxjOcUh54gwJmHIsL86 A5kA== X-Received: by 10.140.34.201 with SMTP id l67mr6132203qgl.61.1404756206735; Mon, 07 Jul 2014 11:03:26 -0700 (PDT) MIME-Version: 1.0 Received: by 10.140.47.150 with HTTP; Mon, 7 Jul 2014 11:03:06 -0700 (PDT) In-Reply-To: <53BAA7BA.2060903@pi.nu> References: <53BAA7BA.2060903@pi.nu> From: "Andrew G. Malis" Date: Mon, 7 Jul 2014 14:03:06 -0400 Message-ID: To: Loa Andersson Content-Type: multipart/alternative; boundary=001a11c0a466b2d7f604fd9e4ad8 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/C5yfdpAsu2-VFzDSyKwyoPH7f5A Cc: "draft-bryant-mpls-oam-udp-return@tools.ietf.org" , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" Subject: Re: [mpls] Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Jul 2014 18:03:30 -0000 --001a11c0a466b2d7f604fd9e4ad8 Content-Type: text/plain; charset=UTF-8 Loa, My positive opinion on this draft has not changed since my previous email on it. I support it as a WG document. Cheers, Andy On Mon, Jul 7, 2014 at 9:59 AM, Loa Andersson wrote: > Working Group, > > > The authors of draft-bryant-mpls-oam-udp-return has informed us > that the draft is ready to be polled to see if we have consensus > to make it a working group document. > > This mail starts a two week adoption poll. > > We have not yet done the IPR poll, it will be done in parallel to the > adoption poll. > > There are no IPR disclosed against this draft. > > Please send your comments to the mpls working group mailing list > (mpls@ietf.org) > > This adoption poll ends Juli 21, 2014! > > /Loa > for the mpls wg co-chairs > > -- > > > Loa Andersson email: loa@mail01.huawei.com > Senior MPLS Expert loa@pi.nu > Huawei Technologies (consultant) phone: +46 739 81 21 64 > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > --001a11c0a466b2d7f604fd9e4ad8 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Loa,

My positive opinion on this draft = has not changed since my previous email on it. I support it as a WG documen= t.

Cheers,
Andy


On Mon, Jul 7, 2014 at 9:59 AM, Loa Ande= rsson <= loa@pi.nu> wrote:
Working Group,


The authors of draft-bryant-mpls-oam-udp-return has informed us
that the draft is ready to be polled to see if we have consensus
to make it a working group document.

This mail starts a two week adoption poll.

We have not yet done the IPR poll, it will be done in parallel to the
adoption poll.

There are no IPR disclosed against this draft.

Please send your comments to the mpls working group mailing list
(mpls@ietf.org)

This adoption poll ends Juli 21, 2014!

/Loa
for the mpls wg co-chairs
--


Loa Andersson =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0email: loa@mail01.huawei.com
Senior MPLS Expert =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0loa@pi.nu
Huawei Technologies (consultant) =C2=A0 =C2=A0 phone: +46 739 81 2= 1 64

_______________________________________________
mpls mailing list
mpls@ietf.org
ht= tps://www.ietf.org/mailman/listinfo/mpls

--001a11c0a466b2d7f604fd9e4ad8-- From nobody Mon Jul 7 14:29:33 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 87FCF1B2938; Mon, 7 Jul 2014 14:29:30 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -101.9 X-Spam-Level: X-Spam-Status: No, score=-101.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6OZBObihcAJZ; Mon, 7 Jul 2014 14:29:28 -0700 (PDT) Received: from usevmg20.ericsson.net (usevmg20.ericsson.net [198.24.6.45]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 5110E1B2933; Mon, 7 Jul 2014 14:29:27 -0700 (PDT) X-AuditID: c618062d-f79206d0000014d2-c7-53babf0dbb87 Received: from EUSAAHC004.ericsson.se (Unknown_Domain [147.117.188.84]) by usevmg20.ericsson.net (Symantec Mail Security) with SMTP id 18.CF.05330.D0FBAB35; Mon, 7 Jul 2014 17:38:53 +0200 (CEST) Received: from EUSAAMB103.ericsson.se ([147.117.188.120]) by EUSAAHC004.ericsson.se ([147.117.188.84]) with mapi id 14.03.0174.001; Mon, 7 Jul 2014 17:29:26 -0400 From: Gregory Mirsky To: "Vengada Prasad Govindan (venggovi)" , "rtg-bfd@ietf.org" Thread-Topic: New Version Notification for draft-vgovindan-mpls-extended-bfd-disc-tlv-00.txt Thread-Index: AQHPl4mFNgiJ7lBGzEawoL9A5AVhppuQCexwgAUYmzA= Date: Mon, 7 Jul 2014 21:29:25 +0000 Message-ID: <7347100B5761DC41A166AC17F22DF1121B7E7AC7@eusaamb103.ericsson.se> References: <20140704131127.29231.56989.idtracker@ietfa.amsl.com> <315041E4211CB84E86EF7C25A2AB583D34623EBA@xmb-rcd-x15.cisco.com> In-Reply-To: <315041E4211CB84E86EF7C25A2AB583D34623EBA@xmb-rcd-x15.cisco.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [147.117.188.9] Content-Type: multipart/alternative; boundary="_000_7347100B5761DC41A166AC17F22DF1121B7E7AC7eusaamb103erics_" MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrNLMWRmVeSWpSXmKPExsUyuXRPiC7v/l3BBpc6DC1uLV3JavH5zzZG i5kfNjE7MHtM+b2R1WPJkp9MAUxRXDYpqTmZZalF+nYJXBl3T/oVtMRUXJyzhbWB8UBkFyMn h4SAicTDB9PZIGwxiQv31gPZXBxCAkcZJRZc3sgO4SxjlJg/dQJYFZuAkcSLjT1ACQ4OEYE0 iaddsiAms4CyxKm7MiAVwgKxEk1/L7CD2CICcRKrXnxmgbCtJK7O28EIYrMIqEi0/u9mArF5 BXwl2q+9ZIRY1cIosfBNA9gqTqDE1iUrmUFsRqDjvp9aA9bALCAucevJfCaIowUkluw5zwxh i0q8fPyPFcJWlNjXP50doj5f4k1/EzPEMkGJkzOfsExgFJ2FZNQsJGWzkJTNAntNU2L9Ln2I EkWJKd0P2SFsDYnWOXPZkcUXMLKvYuQoLU4ty003MtjECIytYxJsujsY97y0PMQowMGoxMO7 IH9XsBBrYllxZe4hRmkOFiVx3lm184KFBNITS1KzU1MLUovii0pzUosPMTJxcEo1MHoVy3zx P+dZVT6lKAQYmqkMy2J+7wpfVRticORH/LUMsSV639+v2TpnUlJ+3O5Q6X8TXd5xzTzUOP+v /8XzHjxJy/fk3pj3oflRilUJg8OOKv0NloHXKzX6HH8eK79SN2Fj5cJomYUbDOZeMXEoa1xk v3Xdz0vLvuXcfPhYev/cSxVz95Xy71diKc5INNRiLipOBAA4x2FXjgIAAA== Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/_IQYmRjYeyQXpJrXyhOaXWPHw5I Cc: "mpls@ietf.org" Subject: Re: [mpls] New Version Notification for draft-vgovindan-mpls-extended-bfd-disc-tlv-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Jul 2014 21:29:30 -0000 --_000_7347100B5761DC41A166AC17F22DF1121B7E7AC7eusaamb103erics_ Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 SGkgUHJhc2FkLA0KdGhpcyBpcyB2ZXJ5IGludGVyZXN0aW5nIHByb3Bvc2FsIGFuZCBJIHRoaW5r IHRoYXQgdGhlIE1QTFMgV0cgd2lsbCBiZSBpbnRlcmVzdGVkIGluIHRoZSBkaXNjdXNzaW9uLiBD b3VwbGUgY29tbWVudHMgYW5kIHF1ZXN0aW9uczoNCuKAoiAgICAgICBJIGJlbGlldmUgdGhhdCBt b25pdG9yaW5nIG9mIEVDTVAgc2VnbWVudHMgb24gbGluayBsYXllciBpcyBtb3JlIGVmZmljaWVu 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PGRpdj4mbmJzcDs8L2Rpdj4NCjxkaXY+Jm5ic3A7PC9kaXY+DQo8L3NwYW4+PC9mb250Pg0KPC9i b2R5Pg0KPC9odG1sPg0K --_000_7347100B5761DC41A166AC17F22DF1121B7E7AC7eusaamb103erics_-- From nobody Mon Jul 7 16:01:21 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 572DC1B28A5 for ; Mon, 7 Jul 2014 16:01:20 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -115.152 X-Spam-Level: X-Spam-Status: No, score=-115.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2fsaezKt4hjW for ; Mon, 7 Jul 2014 16:01:18 -0700 (PDT) Received: from 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from alln-core-3.cisco.com ([173.36.13.136]) by alln-iport-8.cisco.com with ESMTP; 07 Jul 2014 23:01:17 +0000 Received: from xhc-rcd-x05.cisco.com (xhc-rcd-x05.cisco.com [173.37.183.79]) by alln-core-3.cisco.com (8.14.5/8.14.5) with ESMTP id s67N1HaN024542 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Mon, 7 Jul 2014 23:01:17 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-rcd-x05.cisco.com ([173.37.183.79]) with mapi id 14.03.0123.003; Mon, 7 Jul 2014 18:01:17 -0500 From: "Nobo Akiya (nobo)" To: "Jeffrey (Zhaohui) Zhang" , Ross Callon , "Aissaoui, Mustapha (Mustapha)" , "jeremy.whittaker@verizon.com" , Harish Sitaraman , Kapil Arora Thread-Topic: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 Thread-Index: AQHPlUa95Ejp2shyyECvEuCXXDZC9JuL84fAgAj8WACAAFMKQA== Date: Mon, 7 Jul 2014 23:01:16 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.247.57] Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/w3hIa33CpkabupiCDEWhyUvlPb8 Cc: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org" Subject: Re: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode-simple-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Jul 2014 23:01:20 -0000 Hi Jeffrey, Please see in-line. > -----Original Message----- > From: Jeffrey (Zhaohui) Zhang [mailto:zzhang@juniper.net] > Sent: Monday, July 07, 2014 9:00 AM > To: Nobo Akiya (nobo); Ross Callon; Aissaoui, Mustapha (Mustapha); > jeremy.whittaker@verizon.com; Harish Sitaraman; Kapil Arora > Cc: mpls@ietf.org; mpls-chairs@tools.ietf.org; draft-akiya-mpls-lsp-ping- > reply-mode-simple@tools.ietf.org > Subject: RE: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply- > mode-simple-02 >=20 > Nobo, >=20 > Sorry for the late response. Holidays. No problem, and thanks for getting back! >=20 > I am not sure if it is necessary to have the flexibility of (2), but it i= s always > good to have the flexibility if it does not introduce much complexity. If= we > allow multiple mode 5, then (2) is achieved. >=20 > I'll leave this up to you. I believe (1) strikes the right balance between flexibility vs. complexity.= I will add some text describing this usage. Thanks! -Nobo =20 >=20 > Jeffrey >=20 > > -----Original Message----- > > From: Nobo Akiya (nobo) [mailto:nobo@cisco.com] > > Sent: Tuesday, July 01, 2014 8:58 PM > > To: Jeffrey (Zhaohui) Zhang; Ross Callon; Aissaoui, Mustapha > > (Mustapha); jeremy.whittaker@verizon.com; Harish Sitaraman; Kapil > > Arora > > Cc: mpls@ietf.org; mpls-chairs@tools.ietf.org; draft-akiya-mpls-lsp- > > ping-reply-mode-simple@tools.ietf.org > > Subject: RE: [mpls] MPLS-RT review of draft-akiya-mpls-lsp-ping-reply- > > mode-simple-02 > > > > Hi Jeffrey, > > > > Thank you for reviewing this document. > > > > > I do have one suggestion - could we allow multiple return paths to > > > be specified via multiple "Replay Mode 5" in the new "Reply Mode > > > Order > > TLV" > > > and multiple Reply Path TLVs (currently it is not allowed). > > > > Interesting, I do find what you suggested to be useful. I went back to > > RFC7110 and read up on the Reply Path TLV definition. The TLV can > > contain zero, one or more FECs. > > > > Reply Path: It is used to describe the return path that an echo > > reply will be send along. It is variable in length and can > > contain zero, one or more Target FEC sub-TLVs [RFC4379]. > > > > So it appears that "Reply Mode 5" can be one of the entries in the > > "Reply Mode Order TLV", and "Reply Path TLV" can contain multiple FECs. > > > > (1) What is possible as is: > > Pref#1: Reply Mode 4 Reply via application level control channel > > Pref#2a: Reply Mode 5 Reply via Specified Path -> First FEC listed > > Pref#2b: Reply Mode 5 Reply via Specified Path -> Second FEC liste= d > > Pref#3: Reply Mode 2 Reply via an IPv4/IPv6 UDP packet > > > > (2) What is not possible as is: > > Pref#1: Reply Mode 4 Reply via application level control channel > > Pref#2: Reply Mode 5 Reply via Specified Path -> First FEC listed > > Pref#3: Reply Mode 2 Reply via an IPv4/IPv6 UDP packet > > Pref#4: Reply Mode 5 Reply via Specified Path -> Second FEC listed > > > > Granularity of really mixing up Reply Modes and return FECs like (2) > > cannot be accomplished, but I'm not sure if we need such granularity > > and I believe (1) is reasonable. If you are ok with this, then I think > > it's worth adding texts to describe this usages. Do let us know you > > preference. > > > > Thanks! > > > > -Nobo > > > > > > > -----Original Message----- > > > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Jeffrey > > (Zhaohui) > > > Zhang > > > Sent: Tuesday, July 01, 2014 12:08 PM > > > To: Ross Callon; Aissaoui, Mustapha (Mustapha); > > > jeremy.whittaker@verizon.com; Harish Sitaraman; Kapil Arora > > > Cc: mpls@ietf.org; mpls-chairs@tools.ietf.org; draft-akiya-mpls-lsp- > > ping- > > > reply-mode-simple@tools.ietf.org > > > Subject: Re: [mpls] MPLS-RT review of > > > draft-akiya-mpls-lsp-ping-reply- > > > mode-simple-02 > > > > > > I have reviewed the draft and believe it is ready for WG adoption > > > consideration. > > > > > > I do have one suggestion - could we allow multiple return paths to > > > be specified via multiple "Replay Mode 5" in the new "Reply Mode > > > Order > > TLV" > > > and multiple Reply Path TLVs (currently it is not allowed). > > > > > > Thanks. > > > Jeffrey > > > _____________________________________________ > > > From: Ross Callon > > > Sent: Tuesday, June 17, 2014 4:52 PM > > > To: Jeffrey (Zhaohui) Zhang; Aissaoui, Mustapha (Mustapha); > > > jeremy.whittaker@verizon.com > > > Cc: draft-akiya-mpls-lsp-ping-reply-mode-simple@tools.ietf.org; > > > mpls- chairs@tools.ietf.org; Martin Vigoureux > > > Subject: MPLS-RT review of draft-akiya-mpls-lsp-ping-reply-mode- > > simple- > > > 02 > > > > > > > > > Jeff, Mustapha, Jeremy; > > > > > > You have been selected as MPLS Review team reviewers for > > > draft-akiya- mpls-lsp-ping-reply-mode-simple-02. > > > > > > Note to authors: You have been CC'd on this email so that you can > > > know > > that > > > this review is going on. However, please do not review your own > > document. > > > Also please don't update the draft while the reviews are in progress > > (we > > > would like the reviewers to all review the same version). > > > > > > Reviews should comment on whether the document is coherent, is it > > useful > > > (ie, is it likely to be actually useful in operational networks), > > > and > > is the > > > document technically sound?=A0 Also, is the text and grammar > > understandable > > > (it doesn't need to be perfect at this point, but should be > > > reasonably > > clear). > > > We are interested in knowing whether the document is ready to be > > > considered for WG adoption (ie, it doesn't have to be perfect at > > > this > > point, > > > but should be a good start). > > > > > > Reviews should be sent to the document authors, WG co-chairs and WG > > > secretary, and CC'd to the MPLS WG email list. If necessary, > > > Comments > > may > > > be sent privately to only the WG chairs. > > > > > > Are you able to review this draft by July 2, 2014? > > > > > > Thanks, Ross > > > (as MPLS WG chair) > > > From nobody Mon Jul 7 16:52:58 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 481A61B2993 for ; Mon, 7 Jul 2014 16:52:55 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -115.152 X-Spam-Level: X-Spam-Status: No, score=-115.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qRHCw9RoAaEB for ; Mon, 7 Jul 2014 16:52:53 -0700 (PDT) Received: from alln-iport-4.cisco.com (alln-iport-4.cisco.com [173.37.142.91]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2842F1B298C for ; Mon, 7 Jul 2014 16:52:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3841; q=dns/txt; s=iport; t=1404777173; x=1405986773; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=xzrIB//VmgzmjRxL6e/Dr4kk7l9E1GHa4Sg4L+iyhs8=; b=Uq8g0G7hMA23ZckF76R1n3vpFOP5cSPsfpkxNTk1D7XNvuB+3f80KQ8s IJbC454lFOuXUOWsRhINUw7DpXSBUE0LeoGVTuW5mYMKEY5FX3WR4P3rP a3zTNAGw9tobzF9lPkFo4IPBLGIMPYGTBCwcmTryWlu4iKOHJEmCfZqmN 0=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgUFAMkxu1OtJA2H/2dsb2JhbABPCoJqJIEfDcZBAYEWFnWEAwEBAQMBdwIQAgEIIiQyJQIEDg2IMggByVoXjkYrMQcCgyuBFgEEiheka4NDgjA X-IronPort-AV: E=Sophos;i="5.01,621,1400025600"; d="scan'208";a="58977148" Received: from alln-core-2.cisco.com ([173.36.13.135]) by alln-iport-4.cisco.com with ESMTP; 07 Jul 2014 23:52:52 +0000 Received: from xhc-aln-x03.cisco.com (xhc-aln-x03.cisco.com [173.36.12.77]) by alln-core-2.cisco.com (8.14.5/8.14.5) with ESMTP id s67NqqFJ013290 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL) for ; Mon, 7 Jul 2014 23:52:52 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-aln-x03.cisco.com ([173.36.12.77]) with mapi id 14.03.0123.003; Mon, 7 Jul 2014 18:52:51 -0500 From: "Nobo Akiya (nobo)" To: "Nagendra Kumar Nainar (naikumar)" Thread-Topic: New Version Notification for draft-akiya-mpls-lsp-ping-lag-multipath-00.txt Thread-Index: AQHPh0sKZ/vjNgoGA02gD6R1/DNUlZtviMsAgAAGuSCAAWXvgIAMTauggBet8gCAAHYg8A== Date: Mon, 7 Jul 2014 23:52:51 +0000 Message-ID: References: <20140613210400.13388.18750.idtracker@ietfa.amsl.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.247.57] Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/MiAknugLc6QUw9UoOmqR6xwVT4U Cc: "mpls@ietf.org" Subject: Re: [mpls] New Version Notification for draft-akiya-mpls-lsp-ping-lag-multipath-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Jul 2014 23:52:55 -0000 Hi Nagendra, Thanks for further comments! Please see in-line. > >> From section 3, It appears that responder MUST set the LAG Info TLV. > >>Is it the case even if the downstream is not LAG?. Or did you meant > >>that if the responder have LAG based donwstream interface, then it > >>MUST include the TLV?. > > > >First bullet in the last portion of the Section 3 was exactly to > >explain why this is a MUST, but clearly additional text will be > >helpful. How about we update the bullet: > > > >[old] > > o Identify whether responder LSR understands this mechanism. > > > >[new] > > o Mandating the responder to always add the LAG Interface Info TLV > > in the MPLS echo reply allows the initiating LSR to identify > > whether responder LSR understands this mechanism. >=20 > I am trying to understand the behavior when a responder wants > back to echo received with LAG Interface Info TLV. In figure 1, assume th= ere > is one more node connected to E (say F) and A wants to trace the path fro= m > A to F (via A-B-LAG-C-E-F). When C receives thhe echo with LAG interface > Info TLV, since it doenst have any upstream/downstream LAG interface, wi= ll > it still include the TLV in reply?. If so, is it like it unset both U/D b= it?. Good question. I think you meant E and not C, since C has LAG as upstream? Assuming you were asking what will E send, then: Even if E does not have any upstream/downstream LAG, E will still include L= AG Intf Info TLV in the MPLS echo reply, if it understands this TLV. This i= s how A learns whether or not E is capable of following the procedures desc= ribed in this document. Otherwise lack of LAG upstream/downstream informati= on becomes ambiguous to A: there is no upstream/downstream LAG on E vs. E d= idn't understand the LAG procedures (i.e. ignored the option TLV and procee= ded) but may have upstream/downstream LAG. So, LAG Intf Info TLV in MPLS echo reply is to let the initiator know: - Responder understands this mechanism. - U bit to indicate that responder is capable of providing Detailed Interfa= ce and Label Stack TLV. - D bit to indicate that responder is capable of providing DDMAP with LAG i= nfo. I wanted to break up the (U)pstream and (D)ownstream capabilities, since on= some products, doing one could be more difficult than the other one. > >> Section 7 specifies as below, > >> "The Interface Index Sub-TLV describes the index assigned by the > >> upstream LSR to the interface." > >> > >> Can you also point some reference to what type of index is it?. Is it > >> something assigned and advertised by LAG protocol like LACP or PAGP?. > > > >It's a locally allocated persistent index for local interfaces. It may > >or may not be advertised, and that's not really important for this conte= xt. > >We are just interested in getting a unique value (local to that node) > >that identifies a specific interface. I could add more texts, but the > >description on this sub-TLV was mostly ported from RFC4379. I think > >it's ok as is. >=20 > Ok. So the responder will include the locally assigned index > value (of the egress interface) to this Sub-TLV and reply back. So should= we > modify the below statement?, >=20 > "The Interface Index Sub-TLV describes the index assigned by the > upstream LSR to the interface.=B2 >=20 > I think it is not the upstream LSR to the interface right?. Hmm... yes, that text was copied from RFC4379, but it's a bit confusing. Le= t me change that: [old] The Interface Index Sub-TLV describes the index assigned by the upstream LSR to the interface. [new] The Interface Index Sub-TLV describes the index assigned by this LSR to the interface. Would that work? Thanks! -Nobo From nobody Mon Jul 7 18:06:44 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id AD6991B29A8 for ; Mon, 7 Jul 2014 18:06:41 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2 X-Spam-Level: X-Spam-Status: No, score=-2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Ejb_uktzX1OM for ; Mon, 7 Jul 2014 18:06:40 -0700 (PDT) Received: from mail-pa0-x232.google.com (mail-pa0-x232.google.com [IPv6:2607:f8b0:400e:c03::232]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id E8E7B1A0075 for ; Mon, 7 Jul 2014 18:06:39 -0700 (PDT) Received: by mail-pa0-f50.google.com with SMTP id bj1so6422084pad.9 for ; Mon, 07 Jul 2014 18:06:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=content-type:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=5gKPbccKGKYzSoz0g9gyYZYmLBS6OUb7aDyI4vRgdzY=; b=aAI6cdxvkz2drgQuU8cUv88nEzO0MF5MUWVUJw+3CfH4O+Z/dOFU/p4RSveQOQulxC N6C9mmnzVCQWNEEx44Il+GvsWf9cS19qBRD2IOXXpoVUQWqWFJrXhRshMP5QtwG+wW5A 7mC+e2jntsvs1AVXDesgCFMvJ+9y+Bx0l8nrlyxEvrB1+YkMcbiBxOcI7kN4bDluFNOX Nd+Rjr1+Wix6kt+qhG+wo3ZPn6glONYuIxnfSWFzON45t0qR7bfdDewFV3G5Nqhszi+r 0qDWrqObkg9VkUZSQolnUJ0SRWgVbDiGevdHm8SAtc5eVWyh4nH67oBi9G9Nd+iKv1Bl ZR2g== X-Received: by 10.66.163.38 with SMTP id yf6mr32542567pab.46.1404781599520; Mon, 07 Jul 2014 18:06:39 -0700 (PDT) Received: from [192.168.1.2] (c-107-3-154-60.hsd1.ca.comcast.net. [107.3.154.60]) by mx.google.com with ESMTPSA id i10sm196839357pat.36.2014.07.07.18.06.38 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 07 Jul 2014 18:06:38 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) From: Sam Aldrin In-Reply-To: Date: Mon, 7 Jul 2014 18:06:37 -0700 Content-Transfer-Encoding: quoted-printable Message-Id: <10150BDE-17FD-43D0-9DE4-6E0CAAF3BD5E@gmail.com> References: <20140613210400.13388.18750.idtracker@ietfa.amsl.com> To: "Nobo Akiya (nobo)" X-Mailer: Apple Mail (2.1878.6) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/BuQxn7sR9Y1r0dFU8qksdpSe6YA Cc: "mpls@ietf.org" Subject: Re: [mpls] New Version Notification for draft-akiya-mpls-lsp-ping-lag-multipath-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Jul 2014 01:06:41 -0000 Hi Nobo and authors, Slow in catching up on this ID. I have some basic questions about the draft. Want to get them clarified = before doing a detailed review. 1. I thought the ECMP is about the LSP's and not about L3 interfaces or = L2 interfaces. i.e. at MPLS LSP level where LSP's are established = irrespective of L3 or L2 interfaces. But section 1.2. talks about L3 and = L2 and implies that RFC4379 does only L3 interfaces ECMP, could you = kindly clarify? Atleast as I read RFC4379 section 4.1 doesn't = distinguish as defined in this draft. 2. Could you clarify the following? In the case of LAG interface, for a = given FEC, will there be different label stack for each sub-interface = type? If not, i.e. same label stack but differ sub i.f, which multipath = type one could use to determine hash computation? 3. If in Q #2 Label stack there exists different label stack for each = lag member, is there a downside to using separate DDMAP for each LAG = member? i.e. w/o any enhancement? 4. Also, how is DDMAP interface info validated? I believe the LAG member = link # is local. What all fields being validated for LAG interface? Responses will clarify for me to review better. :D -sam On Jun 13, 2014, at 2:14 PM, Nobo Akiya (nobo) wrote: > Dear MPLS WG, >=20 > On MPLS data plane, one aspect which OAM is blind to traffic black = holing is when LSPs are traversing over LAG interfaces. We would like to = propose an extension to RFC4379 to provide the tool an ability to = discover and traverse LAG members. >=20 > It will be very helpful if you could review this document, provide = comments and help us standardize this extension. >=20 > Thanks! >=20 > -Nobo, on behalf of authors >=20 >> -----Original Message----- >> From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org] >> Sent: Friday, June 13, 2014 5:04 PM >> To: John E. Drake; Nobo Akiya (nobo); George Swallow (swallow); = George >> Swallow (swallow); Bruno Decraene; Stephane Litkowski; Bruno = Decraene; >> Nobo Akiya (nobo); John Drake; Stephane Litkowski >> Subject: New Version Notification for draft-akiya-mpls-lsp-ping-lag- >> multipath-00.txt >>=20 >>=20 >> A new version of I-D, draft-akiya-mpls-lsp-ping-lag-multipath-00.txt >> has been successfully submitted by Nobo Akiya and posted to the IETF >> repository. >>=20 >> Name: draft-akiya-mpls-lsp-ping-lag-multipath >> Revision: 00 >> Title: Label Switched Path (LSP) Ping/Trace Multipath = Support for >> Link Aggregation Group (LAG) Interfaces >> Document date: 2014-06-13 >> Group: Individual Submission >> Pages: 18 >> URL: = http://www.ietf.org/internet-drafts/draft-akiya-mpls-lsp-ping- >> lag-multipath-00.txt >> Status: = https://datatracker.ietf.org/doc/draft-akiya-mpls-lsp-ping-lag- >> multipath/ >> Htmlized: = http://tools.ietf.org/html/draft-akiya-mpls-lsp-ping-lag- >> multipath-00 >>=20 >>=20 >> Abstract: >> This document defines an extension to the Multiprotocol Label >> Switching (MPLS) Label Switched Path (LSP) Ping and Traceroute to >> describe Multipath Information for Link Aggregation (LAG) member >> links separately, thus allowing MPLS LSP Ping and Traceroute to >> discover and exercise specific paths of layer 2 Equal-Cost = Multipath >> (ECMP) over LAG interfaces. >>=20 >> This document updates RFC4379 and RFC6424. >>=20 >>=20 >>=20 >>=20 >>=20 >> Please note that it may take a couple of minutes from the time of >> submission until the htmlized version and diff are available at = tools.ietf.org. >>=20 >> The IETF Secretariat >=20 > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls From nobody Mon Jul 7 18:41:56 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8F3F21B2910 for ; 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Mon, 7 Jul 2014 20:41:50 -0500 From: "Nobo Akiya (nobo)" To: Sam Aldrin Thread-Topic: [mpls] New Version Notification for draft-akiya-mpls-lsp-ping-lag-multipath-00.txt Thread-Index: AQHPh0sKZ/vjNgoGA02gD6R1/DNUlZtviMsAgCZOLID//65qEA== Date: Tue, 8 Jul 2014 01:41:49 +0000 Message-ID: References: <20140613210400.13388.18750.idtracker@ietfa.amsl.com> <10150BDE-17FD-43D0-9DE4-6E0CAAF3BD5E@gmail.com> In-Reply-To: <10150BDE-17FD-43D0-9DE4-6E0CAAF3BD5E@gmail.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.247.57] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/kkWXi5La7i5Hr6Ge3L6TP21xmcc Cc: "mpls@ietf.org" Subject: Re: [mpls] New Version Notification for draft-akiya-mpls-lsp-ping-lag-multipath-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Jul 2014 01:41:54 -0000 Hi Sam, Always appreciate your comments/questions :) Please see in-line. > -----Original Message----- > From: Sam Aldrin [mailto:aldrin.ietf@gmail.com] > Sent: Monday, July 07, 2014 9:07 PM > To: Nobo Akiya (nobo) > Cc: mpls@ietf.org > Subject: Re: [mpls] New Version Notification for draft-akiya-mpls-lsp-pin= g- > lag-multipath-00.txt >=20 > Hi Nobo and authors, >=20 > Slow in catching up on this ID. >=20 > I have some basic questions about the draft. Want to get them clarified > before doing a detailed review. >=20 > 1. I thought the ECMP is about the LSP's and not about L3 interfaces or L= 2 > interfaces. i.e. at MPLS LSP level where LSP's are established irrespecti= ve of > L3 or L2 interfaces. But section 1.2. talks about L3 and L2 and implies t= hat > RFC4379 does only L3 interfaces ECMP, could you kindly clarify? Atleast a= s I > read RFC4379 section 4.1 doesn't distinguish as defined in this draft. RFC4379/RFC6424 do not explicitly spell this out, but it's the DDMAP (as we= ll as DSMP) fields that imply L3. +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | MTU | Address Type | DS Flags | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Downstream IP Address (4 or 16 octets) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Downstream Interface Address (4 or 16 octets) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ And the Address Type can be: Type # Address Type K Octets ------ ------------ -------- 1 IPv4 Numbered 16 2 IPv4 Unnumbered 16 3 IPv6 Numbered 40 4 IPv6 Unnumbered 28 Type 5 (Non IP) was also added by RFC6426 for TP. If an LSR was to describe each LAG member in a DDMAP using procedures descr= ibed in RFC4379/RFC6424, then all fields expect for Multipath Info will be = exactly the same. This is sort of "weird" in the first place, but what is w= orse is that this leads to the difficulty of the second portion of the draf= t-akiya-mpls-lsp-ping-lag-multipath, which is to validate the different tra= versal for each LAG member. >=20 > 2. Could you clarify the following? In the case of LAG interface, for a g= iven > FEC, will there be different label stack for each sub-interface type? If = not, > i.e. same label stack but differ sub i.f, which multipath type one could = use > to determine hash computation? I think I understand your question ... but if my answers are not what you w= ere asking, do elaborate. For a given FEC, the incoming & outgoing labels w= ill be the same for all LAG members when traversing over a LAG to reach the= downstream. Of course SR could assign an Adj-SID for a LAG member, and exp= licitly steer the packets over the specific LAG member, but it would no lon= ger be considered to travel over the LAG at that point. Similar if RSVP was= to pin-down a specific LAG member. So the LAG is treated as one logical in= terface by the label binding procedures, thus same labels for every LAG mem= ber. As far as how an incoming packet is load balanced to each LAG member, that = could be, in the context of LSP trace, either destination IP addresses (mul= tipath type {2, 4, 8}) or Entropy Labels (multipath type {9}) or both (mult= ipath type {10}). >=20 > 3. If in Q #2 Label stack there exists different label stack for each lag > member, is there a downside to using separate DDMAP for each LAG > member? i.e. w/o any enhancement? Same label, see above. >=20 > 4. Also, how is DDMAP interface info validated? I believe the LAG member > link # is local. What all fields being validated for LAG interface? When MPLS echo request traverses over all LAG members (i.e. different inter= face index) to the nexthop, then the packets should have terminated on diff= erent incoming LAG members at the downstream (different interface index). For supported/unsupported scenarios, please view: http://tools.ietf.org/htm= l/draft-akiya-mpls-lsp-ping-lag-multipath-00#appendix-A >=20 > Responses will clarify for me to review better. :D Looking forward to seeing more comments from you, hopefully not as harsh as= the Reply Mode extension draft :) Thanks! -Nobo >=20 > -sam >=20 >=20 > On Jun 13, 2014, at 2:14 PM, Nobo Akiya (nobo) wrote: >=20 > > Dear MPLS WG, > > > > On MPLS data plane, one aspect which OAM is blind to traffic black holi= ng > is when LSPs are traversing over LAG interfaces. We would like to propose > an extension to RFC4379 to provide the tool an ability to discover and > traverse LAG members. > > > > It will be very helpful if you could review this document, provide > comments and help us standardize this extension. > > > > Thanks! > > > > -Nobo, on behalf of authors > > > >> -----Original Message----- > >> From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org] > >> Sent: Friday, June 13, 2014 5:04 PM > >> To: John E. Drake; Nobo Akiya (nobo); George Swallow (swallow); > >> George Swallow (swallow); Bruno Decraene; Stephane Litkowski; Bruno > >> Decraene; Nobo Akiya (nobo); John Drake; Stephane Litkowski > >> Subject: New Version Notification for draft-akiya-mpls-lsp-ping-lag- > >> multipath-00.txt > >> > >> > >> A new version of I-D, draft-akiya-mpls-lsp-ping-lag-multipath-00.txt > >> has been successfully submitted by Nobo Akiya and posted to the IETF > >> repository. > >> > >> Name: draft-akiya-mpls-lsp-ping-lag-multipath > >> Revision: 00 > >> Title: Label Switched Path (LSP) Ping/Trace Multipath > Support for > >> Link Aggregation Group (LAG) Interfaces > >> Document date: 2014-06-13 > >> Group: Individual Submission > >> Pages: 18 > >> URL: http://www.ietf.org/internet-drafts/draft-akiya-mpls-l= sp- > ping- > >> lag-multipath-00.txt > >> Status: https://datatracker.ietf.org/doc/draft-akiya-mpls-lsp-= ping- > lag- > >> multipath/ > >> Htmlized: http://tools.ietf.org/html/draft-akiya-mpls-lsp-ping-l= ag- > >> multipath-00 > >> > >> > >> Abstract: > >> This document defines an extension to the Multiprotocol Label > >> Switching (MPLS) Label Switched Path (LSP) Ping and Traceroute to > >> describe Multipath Information for Link Aggregation (LAG) member > >> links separately, thus allowing MPLS LSP Ping and Traceroute to > >> discover and exercise specific paths of layer 2 Equal-Cost Multipath > >> (ECMP) over LAG interfaces. > >> > >> This document updates RFC4379 and RFC6424. > >> > >> > >> > >> > >> > >> Please note that it may take a couple of minutes from the time of > >> submission until the htmlized version and diff are available at > tools.ietf.org. > >> > >> The IETF Secretariat > > > > _______________________________________________ > > mpls mailing list > > mpls@ietf.org > > https://www.ietf.org/mailman/listinfo/mpls From nobody Mon Jul 7 19:26:03 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: 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bits=128 verify=FAIL) for ; Tue, 8 Jul 2014 02:25:59 GMT Received: from xmb-rcd-x03.cisco.com ([169.254.7.65]) by xhc-aln-x06.cisco.com ([173.36.12.80]) with mapi id 14.03.0123.003; Mon, 7 Jul 2014 21:25:59 -0500 From: "Nagendra Kumar Nainar (naikumar)" To: "Nobo Akiya (nobo)" Thread-Topic: New Version Notification for draft-akiya-mpls-lsp-ping-lag-multipath-00.txt Thread-Index: AQHPh0sKZ/vjNgoGA02gD6R1/DNUlZtviMsAgAAGuSCAAWXvgIAMTauggBet8gCAAHYg8IAAQuAA Date: Tue, 8 Jul 2014 02:25:58 +0000 Message-ID: References: <20140613210400.13388.18750.idtracker@ietfa.amsl.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.4.2.140509 x-originating-ip: [10.21.146.59] Content-Type: text/plain; charset="euc-kr" Content-ID: Content-Transfer-Encoding: base64 MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/MQD5XataFXOaL0sw7cHMLdrMWDY Cc: "mpls@ietf.org" Subject: Re: [mpls] New Version 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b3VsZCB0aGF0IHdvcms/DQo+DQo+VGhhbmtzIQ0KPg0KPi1Ob2JvDQo+DQo+DQoNCg== From nobody Mon Jul 7 19:32:09 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8DCAC1B2A07 for ; Mon, 7 Jul 2014 19:32:06 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2 X-Spam-Level: X-Spam-Status: No, score=-2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id KObyPyN031Ou for ; Mon, 7 Jul 2014 19:32:03 -0700 (PDT) Received: from mail-pa0-x22c.google.com (mail-pa0-x22c.google.com [IPv6:2607:f8b0:400e:c03::22c]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3F80D1B2A05 for ; Mon, 7 Jul 2014 19:32:03 -0700 (PDT) Received: by mail-pa0-f44.google.com with SMTP id rd3so6484883pab.3 for ; Mon, 07 Jul 2014 19:32:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=content-type:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=3yZFRSQ+Vcji4VGqlcxxUPBiPd4OoWPKn3BWRsj/KuY=; b=X8U/5l9ZWKS+lzW1Oa5+0kAJfQE6z/M3sL07TXyR3GdVYWcmoiKbz7rKnZF3sGsbCd CIdKKJ5r42KV4hNZJehrVYoe83wa9Qh1Z9ZCB+p9p2wDdGihvAKXIgR5hx13ZTj8FmPU hav/G5TcyFOa25JOn3k83XNOXqeHx6r+5tPsRxbB/Wvonf/NBQlcO9OJWs+NvmDKrQIs QEVtzZ4bBC5BsHuLEKYsonHcfuDXLadHPxKU0lH5sWVe67/+LpQUB2a/LSGOdxFnQ9T2 29d9ojrm9tBLVS8Gf96/6goXjAuvmmL3YcIQ8+nCh6b+hFOMkyx5nnEA971iMQPwD/XJ 7TWA== X-Received: by 10.67.4.163 with SMTP id cf3mr31872975pad.92.1404786722949; Mon, 07 Jul 2014 19:32:02 -0700 (PDT) Received: from [192.168.1.2] (c-107-3-154-60.hsd1.ca.comcast.net. [107.3.154.60]) by mx.google.com with ESMTPSA id v9sm22183506pdp.88.2014.07.07.19.32.01 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 07 Jul 2014 19:32:02 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) From: Sam Aldrin In-Reply-To: Date: Mon, 7 Jul 2014 19:32:02 -0700 Content-Transfer-Encoding: quoted-printable Message-Id: References: <20140613210400.13388.18750.idtracker@ietfa.amsl.com> <10150BDE-17FD-43D0-9DE4-6E0CAAF3BD5E@gmail.com> To: "Nobo Akiya (nobo)" X-Mailer: Apple Mail (2.1878.6) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/krb7Xwl3ysfR6SAQFd8p_Zx58fY Cc: "mpls@ietf.org" Subject: Re: [mpls] New Version Notification for draft-akiya-mpls-lsp-ping-lag-multipath-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Jul 2014 02:32:06 -0000 Thanks, Nobo, for quick response. Inline for my comments. On Jul 7, 2014, at 6:41 PM, Nobo Akiya (nobo) wrote: > Hi Sam, >=20 > Always appreciate your comments/questions :) >=20 > Please see in-line. >=20 >> -----Original Message----- >> From: Sam Aldrin [mailto:aldrin.ietf@gmail.com] >> Sent: Monday, July 07, 2014 9:07 PM >> To: Nobo Akiya (nobo) >> Cc: mpls@ietf.org >> Subject: Re: [mpls] New Version Notification for = draft-akiya-mpls-lsp-ping- >> lag-multipath-00.txt >>=20 >> Hi Nobo and authors, >>=20 >> Slow in catching up on this ID. >>=20 >> I have some basic questions about the draft. Want to get them = clarified >> before doing a detailed review. >>=20 >> 1. I thought the ECMP is about the LSP's and not about L3 interfaces = or L2 >> interfaces. i.e. at MPLS LSP level where LSP's are established = irrespective of >> L3 or L2 interfaces. But section 1.2. talks about L3 and L2 and = implies that >> RFC4379 does only L3 interfaces ECMP, could you kindly clarify? = Atleast as I >> read RFC4379 section 4.1 doesn't distinguish as defined in this = draft. >=20 > RFC4379/RFC6424 do not explicitly spell this out, but it's the DDMAP = (as well as DSMP) fields that imply L3. >=20 > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > | MTU | Address Type | DS Flags | > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > | Downstream IP Address (4 or 16 octets) | > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > | Downstream Interface Address (4 or 16 octets) | > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >=20 > And the Address Type can be: >=20 > Type # Address Type K Octets > ------ ------------ -------- > 1 IPv4 Numbered 16 > 2 IPv4 Unnumbered 16 > 3 IPv6 Numbered 40 > 4 IPv6 Unnumbered 28 >=20 > Type 5 (Non IP) was also added by RFC6426 for TP. May be the wording in your draft should change, because neither RFC = explicitly say that. It could be just that LAG interface type was not = explicitly identified.=20 >=20 > If an LSR was to describe each LAG member in a DDMAP using procedures = described in RFC4379/RFC6424, then all fields expect for Multipath Info = will be exactly the same. This is sort of "weird" in the first place, = but what is worse is that this leads to the difficulty of the second = portion of the draft-akiya-mpls-lsp-ping-lag-multipath, which is to = validate the different traversal for each LAG member. ok >=20 >>=20 >> 2. Could you clarify the following? In the case of LAG interface, for = a given >> FEC, will there be different label stack for each sub-interface type? = If not, >> i.e. same label stack but differ sub i.f, which multipath type one = could use >> to determine hash computation? >=20 > I think I understand your question ... but if my answers are not what = you were asking, do elaborate. For a given FEC, the incoming & outgoing = labels will be the same for all LAG members when traversing over a LAG = to reach the downstream. Of course SR could assign an Adj-SID for a LAG = member, and explicitly steer the packets over the specific LAG member, = but it would no longer be considered to travel over the LAG at that = point. Similar if RSVP was to pin-down a specific LAG member. So the LAG = is treated as one logical interface by the label binding procedures, = thus same labels for every LAG member. Few questions, Because you mentioned it is L2 interfaces only, I was wondering whether = L3 header is taken into consideration or not!=20 Secondly, assuming if member is not pinned to a specific LSP, is the = validation for FEC? If so, how is that being done? when do you consider = LSP ping/trace failure? As it is sub member failure, the interface is = still running and packets are still fwd'd.=20 >=20 > As far as how an incoming packet is load balanced to each LAG member, = that could be, in the context of LSP trace, either destination IP = addresses (multipath type {2, 4, 8}) or Entropy Labels (multipath type = {9}) or both (multipath type {10}). You tripped me with L2 only interfaces/sub if. Hence the question, = whether L3 header is taken into consideration. >=20 >>=20 >> 3. If in Q #2 Label stack there exists different label stack for each = lag >> member, is there a downside to using separate DDMAP for each LAG >> member? i.e. w/o any enhancement? >=20 > Same label, see above. >=20 >>=20 >> 4. Also, how is DDMAP interface info validated? I believe the LAG = member >> link # is local. What all fields being validated for LAG interface? >=20 > When MPLS echo request traverses over all LAG members (i.e. different = interface index) to the nexthop, then the packets should have terminated = on different incoming LAG members at the downstream (different interface = index). >=20 > For supported/unsupported scenarios, please view: = http://tools.ietf.org/html/draft-akiya-mpls-lsp-ping-lag-multipath-00#appe= ndix-A I think appendix sections are very imp to consider and should be in main = sections. =46rom high level, this addition will help discover various LAG members = associated with the data path of an LSP. But I think it is difficult to = validate against a given FEC. Because the DDMAP info of LAG member sent = cannot be validated. If it is indeed could be validated, should be = documented in the ID.=20 >=20 >>=20 >> Responses will clarify for me to review better. :D >=20 > Looking forward to seeing more comments from you, hopefully not as = harsh as the Reply Mode extension draft :) It is just a beginning and hope you won't conclude with reply mode 1. :D -sam >=20 > Thanks! >=20 > -Nobo >=20 >>=20 >> -sam >>=20 >>=20 >> On Jun 13, 2014, at 2:14 PM, Nobo Akiya (nobo) = wrote: >>=20 >>> Dear MPLS WG, >>>=20 >>> On MPLS data plane, one aspect which OAM is blind to traffic black = holing >> is when LSPs are traversing over LAG interfaces. We would like to = propose >> an extension to RFC4379 to provide the tool an ability to discover = and >> traverse LAG members. >>>=20 >>> It will be very helpful if you could review this document, provide >> comments and help us standardize this extension. >>>=20 >>> Thanks! >>>=20 >>> -Nobo, on behalf of authors >>>=20 >>>> -----Original Message----- >>>> From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org] >>>> Sent: Friday, June 13, 2014 5:04 PM >>>> To: John E. Drake; Nobo Akiya (nobo); George Swallow (swallow); >>>> George Swallow (swallow); Bruno Decraene; Stephane Litkowski; Bruno >>>> Decraene; Nobo Akiya (nobo); John Drake; Stephane Litkowski >>>> Subject: New Version Notification for = draft-akiya-mpls-lsp-ping-lag- >>>> multipath-00.txt >>>>=20 >>>>=20 >>>> A new version of I-D, = draft-akiya-mpls-lsp-ping-lag-multipath-00.txt >>>> has been successfully submitted by Nobo Akiya and posted to the = IETF >>>> repository. >>>>=20 >>>> Name: draft-akiya-mpls-lsp-ping-lag-multipath >>>> Revision: 00 >>>> Title: Label Switched Path (LSP) Ping/Trace Multipath >> Support for >>>> Link Aggregation Group (LAG) Interfaces >>>> Document date: 2014-06-13 >>>> Group: Individual Submission >>>> Pages: 18 >>>> URL: = http://www.ietf.org/internet-drafts/draft-akiya-mpls-lsp- >> ping- >>>> lag-multipath-00.txt >>>> Status: = https://datatracker.ietf.org/doc/draft-akiya-mpls-lsp-ping- >> lag- >>>> multipath/ >>>> Htmlized: = http://tools.ietf.org/html/draft-akiya-mpls-lsp-ping-lag- >>>> multipath-00 >>>>=20 >>>>=20 >>>> Abstract: >>>> This document defines an extension to the Multiprotocol Label >>>> Switching (MPLS) Label Switched Path (LSP) Ping and Traceroute to >>>> describe Multipath Information for Link Aggregation (LAG) member >>>> links separately, thus allowing MPLS LSP Ping and Traceroute to >>>> discover and exercise specific paths of layer 2 Equal-Cost = Multipath >>>> (ECMP) over LAG interfaces. >>>>=20 >>>> This document updates RFC4379 and RFC6424. >>>>=20 >>>>=20 >>>>=20 >>>>=20 >>>>=20 >>>> Please note that it may take a couple of minutes from the time of >>>> submission until the htmlized version and diff are available at >> tools.ietf.org. >>>>=20 >>>> The IETF Secretariat >>>=20 >>> _______________________________________________ >>> mpls mailing list >>> mpls@ietf.org >>> https://www.ietf.org/mailman/listinfo/mpls >=20 From nobody Mon Jul 7 21:47:07 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 07BEA1B2A25 for ; 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Tue, 8 Jul 2014 13:46:27 +0900 (JST) Received: from mail03.kamome.nec.co.jp (mail03.kamome.nec.co.jp [10.25.43.7]) by mailsv.nec.co.jp (8.13.8/8.13.4) with ESMTP id s684kRCZ025816 for ; Tue, 8 Jul 2014 13:46:27 +0900 (JST) Received: from bpxc99gp.gisp.nec.co.jp ([10.38.151.146] [10.38.151.146]) by mail02.kamome.nec.co.jp with ESMTP id BT-MMP-382439; Tue, 8 Jul 2014 13:45:31 +0900 Received: from BPXM18GP.gisp.nec.co.jp ([169.254.2.157]) by BPXC18GP.gisp.nec.co.jp ([10.38.151.146]) with mapi id 14.02.0328.011; Tue, 8 Jul 2014 13:45:31 +0900 From: Zhenlong Cui To: "mpls@ietf.org" Thread-Topic: MPLS-TP multi-failure protection Thread-Index: Ac+aZtbSwSLShHxfT7qgOwu7VnDdKQ== Date: Tue, 8 Jul 2014 04:45:31 +0000 Message-ID: Accept-Language: ja-JP, en-US Content-Language: ja-JP X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.38.126.83] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/d6H6e_KOK4tY-p0Ht-KQ8qTBigQ Subject: [mpls] MPLS-TP multi-failure protection X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Jul 2014 04:47:06 -0000 RGVhciBBbGwsDQoNCldlJ3ZlIHN1Ym1pdHRlZCBhIG5ldyB2ZXJzaW9uIG9mIEktRCwgZHJhZnQt Y3VpLW1wbHMtdHAtbWZwLXVzZS1jYXNlLWFuZC1yZXF1aXJlbWVudHMtMDIgYXMgc2hvd24gaW4g dGhlIGZvbGxvd2luZyBlLW1haWwuDQoNCiAtSGlzdG9yeQ0KICBPbGRlciB2ZXJzaW9uKC0wMSkg aW5jbHVkZXMgbToxLCBidXQgbm90IG06bi4NCg0KIC1QdXJwb3NlIG9mIHRoZSBuZXcgdmVyc2lv bi4NCiAgRXh0ZW5kIHRoZSBzY29wZSB0byBjb3ZlciBtOm4sIGJlY2F1c2UgaXQgbWVldHMgdGhl IGN1c3RvbWVyIG5lZWRzIHdlbGwuDQoNCg0KQW55IGNvbW1lbnRzIG9yIHN1Z2dlc3Rpb25zIHdv dWxkIGJlIGdyZWF0bHkgYXBwcmVjaWF0ZWQuIA0KDQoNClRoYW5rIHlvdSwNCnpoZW5sb25nDQoN Cg0KLS0tLS1PcmlnaW5hbCBNZXNzYWdlLS0tLS0NCkZyb206IGludGVybmV0LWRyYWZ0c0BpZXRm Lm9yZyBbbWFpbHRvOmludGVybmV0LWRyYWZ0c0BpZXRmLm9yZ10gDQpTZW50OiBTYXR1cmRheSwg SnVseSAwNSwgMjAxNCAzOjQ5IEFNDQpUbzogTWFzYWhpcm8gRGFpa29rdTsgUm9sZiBXaW50ZXI7 IFNhbSBBbGRyaW47IEhpbWFuc2h1IEMuIFNoYWg7IEN1aSBaaGVubG9uZyjltJQg54+N6b6NKTsg Um9sZiBXaW50ZXI7IE1hc2FoaXJvIERhaWtva3U7IEhpbWFuc2h1IFNoYWg7IFNhbSBBbGRyaW47 IEN1aSBaaGVubG9uZyjltJQg54+N6b6NKQ0KU3ViamVjdDogTmV3IFZlcnNpb24gTm90aWZpY2F0 aW9uIGZvciBkcmFmdC1jdWktbXBscy10cC1tZnAtdXNlLWNhc2UtYW5kLXJlcXVpcmVtZW50cy0w Mi50eHQNCg0KDQpBIG5ldyB2ZXJzaW9uIG9mIEktRCwgZHJhZnQtY3VpLW1wbHMtdHAtbWZwLXVz ZS1jYXNlLWFuZC1yZXF1aXJlbWVudHMtMDIudHh0DQpoYXMgYmVlbiBzdWNjZXNzZnVsbHkgc3Vi bWl0dGVkIGJ5IFpoZW5sb25nIEN1aSBhbmQgcG9zdGVkIHRvIHRoZSBJRVRGIHJlcG9zaXRvcnku DQoNCk5hbWU6CQlkcmFmdC1jdWktbXBscy10cC1tZnAtdXNlLWNhc2UtYW5kLXJlcXVpcmVtZW50 cw0KUmV2aXNpb246CTAyDQpUaXRsZToJCVVzZSBDYXNlcyBhbmQgUmVxdWlyZW1lbnRzIGZvciBN UExTLVRQIG11bHRpLWZhaWx1cmUgcHJvdGVjdGlvbg0KRG9jdW1lbnQgZGF0ZToJMjAxNC0wNy0w NA0KR3JvdXA6CQlJbmRpdmlkdWFsIFN1Ym1pc3Npb24NClBhZ2VzOgkJNw0KVVJMOiAgICAgICAg ICAgIGh0dHA6Ly93d3cuaWV0Zi5vcmcvaW50ZXJuZXQtZHJhZnRzL2RyYWZ0LWN1aS1tcGxzLXRw LW1mcC11c2UtY2FzZS1hbmQtcmVxdWlyZW1lbnRzLTAyLnR4dA0KU3RhdHVzOiAgICAgICAgIGh0 dHBzOi8vZGF0YXRyYWNrZXIuaWV0Zi5vcmcvZG9jL2RyYWZ0LWN1aS1tcGxzLXRwLW1mcC11c2Ut Y2FzZS1hbmQtcmVxdWlyZW1lbnRzLw0KSHRtbGl6ZWQ6ICAgICAgIGh0dHA6Ly90b29scy5pZXRm Lm9yZy9odG1sL2RyYWZ0LWN1aS1tcGxzLXRwLW1mcC11c2UtY2FzZS1hbmQtcmVxdWlyZW1lbnRz LTAyDQpEaWZmOiAgICAgICAgICAgaHR0cDovL3d3dy5pZXRmLm9yZy9yZmNkaWZmP3VybDI9ZHJh ZnQtY3VpLW1wbHMtdHAtbWZwLXVzZS1jYXNlLWFuZC1yZXF1aXJlbWVudHMtMDINCg0KQWJzdHJh Y3Q6DQogICBUaGUgYmFzaWMgc3Vydml2YWJpbGl0eSB0ZWNobmlxdWUgaGFzIGJlZW4gZGVmaW5l ZCBpbiBNdWx0aXByb3RvY29sDQogICBMYWJlbCBTd2l0Y2hpbmcgVHJhbnNwb3J0IFByb2ZpbGUg KE1QTFMtVFApIG5ldHdvcmsgW1JGQzYzNzhdLiAgVGhhdA0KICAgcHJvdG9jb2wgaG93ZXZlciBp cyBsaW1pdGVkIHRvIDErMSBhbmQgMToxIHByb3RlY3Rpb24sIG5vdCBkZXNpZ25lZA0KICAgdG8g aGFuZGxlIG11bHRpLWZhaWx1cmUgcHJvdGVjdGlvbi4NCg0KICAgVGhpcyBkb2N1bWVudCBpbnRy b2R1Y2VzIHNvbWUgdXNlIGNhc2VzIGFuZCByZXF1aXJlbWVudHMgZm9yIG11bHRpLQ0KICAgZmFp bHVyZSBwcm90ZWN0aW9uIGZ1bmN0aW9uYWxpdHkuDQoNCiAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICANCg0KDQpQbGVhc2Ugbm90ZSB0aGF0IGl0IG1heSB0YWtlIGEgY291cGxlIG9mIG1pbnV0ZXMg ZnJvbSB0aGUgdGltZSBvZiBzdWJtaXNzaW9uIHVudGlsIHRoZSBodG1saXplZCB2ZXJzaW9uIGFu ZCBkaWZmIGFyZSBhdmFpbGFibGUgYXQgdG9vbHMuaWV0Zi5vcmcuDQoNClRoZSBJRVRGIFNlY3Jl dGFyaWF0DQoNCg== From nobody Tue Jul 8 03:56:46 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E54D11B2A29 for ; 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WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: Yaacov Weingarten , Jeong Ryoo References: <53A5ABED.9080408@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28748144@SMTP2.etri.info> In-Reply-To: X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Identified-User: {1038:box313.bluehost.com:labnmobi:labn.net} {sentby:smtp auth 69.89.31.113 authed with lberger@labn.net} Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/sEBaCNWs5s_j8RqqBgZF7ZqkJaA Cc: "mpls@ietf.org" , "draft-ietf-mpls-smp-requirements.all@tools.ietf.org" , "rtg-dir@ietf.org" , "rtg-ads@tools.ietf.org" Subject: Re: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-smp-requirements-06.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Jul 2014 10:56:35 -0000 Yaacov, Sounds reasonable, but I'll need to see the new wording to be sure. Thanks, Lou On 7/5/2014 3:49 PM, Yaacov Weingarten wrote: > > Lou, hi > I would like to address two of your comments, in your follow-up > message, since I am the source of the change in terminology. > > Regarding the two occurences of "assigned" in place of "utilized" - > when I read the proposed changes,as discussed amongst the authors, I > felt that in those two instances the use of "utilized" could lead to > some ambiguity. > > If we state that "resources SHOULD be utilized on a first come first > served basis" this could be interpreted (IMO) as referring to the > packet level, rather than utilized by a specific path, such that > packets from different paths could be interspersed along the shared > segments. Therefore,I suggested that or this context it would be > better to use a word that meant that the first-come first served basis > was at the level of assigning (or allocating) the resources rather > than utilizing them. > > Hope this clarifies this point. I am certain that I speak for the > other authors in saying that I am open to other suggestions. > > BR, > yaacov > > On Jul 4, 2014 3:53 AM, "Jeong Ryoo" > wrote: > > Dear Lou, > > > > Thanks a lot for your valuable comments. > > > > The authors of this draft have discussed your comments, and are > proposing our resolutions to your comments. Please, let us know if > the proposal is appropriate to address your comments and concerns. > > > > Best regards, > > > > Authors of draft-ietf-mpls-smp-requirements draft > > > > ****** Beginning of Comment Resolution ****** > > > > - Document's usage of "committed" vs "allocated" resources: > > In section 1 the document introduces the notion that the > distinction between protection and restoration is based on when > resources are "committed". This difference from past > definition. RFC4427 and 6372 make the distinction that protection > and restoration differ based on when resources are *allocated* not > *committed*. To quote RFC 4427: > > The distinction between protection and restoration is made based > on the resource allocation done during the recovery LSP/span > establishment. The distinction between different types of > restoration is made based on the level of route computation, > signaling, and resource allocation during the restoration > LSP/span establishment. > > This difference also leads to come confused statements in the > document as well as ambiguity in the text, i.e. confusion by the > reader. The term "committed" is not tightly defined in this > document (or earlier work) and is used differently than how > "allocated" has been used. An example of this can be found in > Section 3.1 which states: > > However, the commitment of the resources, at least for the > shared segments, will only be finalized when the protection > path is actually activated. Therefore, for the purists - > regarding the terminology - SMP lies somewhere between > protection and restoration. > > Both sentences are problematic. In the first, commitment seems to > cover a "protection switch" would "connect" the protection path > but not the earlier "allocation" of resources. (Quoted terms are > used in earlier RFCs.) The second conclusion is based on the new > distinction of protection vs. restoration and is unnecessary with > the existing distinction. > > This issue exists in multiple places in the document where > "committed" is used and I'd recommend that each should be replaced > with terminology used in the referenced RFCs, i.e., "allocation", > "connection", "cross-connect", "protection switch(over)", ... > > Note I'm *not* highlighting all cases where there are problems in the > document related to this issue. There are a couple of places in the > document where I think it's possible that once this terminology > ambiguity is corrected that I'll have other substantive comments. > > > > [Authors] After reviewing RFCs 4427, 6372, 3945, 4426, and 4428, > we concluded that the distinction between protection and > restoration should be aligned with the exiting documents > normatively referenced by this document. Accordingly, the > following 16 modifications will be done in revision: > > > > (1) Section 1, the third paragraph > > OLD: > > As pointed out > > in [RFC6372] and [RFC4428], applying 1+1 linear protection requires > > that resources are committed for use by both the working and > > protection paths. Applying 1:1 protection requires that the same > > resources are committed, but allows the resources of the protection > > path to be utilized for pre-emptible extra traffic. > > NEW: > > As pointed out > > in [RFC6372] and [RFC4428], applying 1+1 protection requires > > that resources are allocated for use by both the working and > > protection paths. Applying 1:1 protection requires that the same > > resources are allocated, but allows the resources of the protection > > path to be utilized for pre-emptible extra traffic. > > > > (2) The whole text in Section 3.1 will be replaced with: > > [RFC6372], based upon the definitions in [RFC4427], differentiates > between "protection" and "restoration" dependent upon the dynamism > of the resource allocation. The same distinction is used in > [RFC3945], [RFC4426], and [RFC4428]. This document also uses the > same distinction between protection and restoration as stated in > [RFC6372]. > > > > (3) In page 6, > > OLD: > > The use of preemption in the network is typically a business or > > policy decision such that when protection resources are contended, > > priority can be applied to determine to which parties the protection > > resources are committed. > > NEW: > > The use of preemption in the network is typically a business or > > policy decision such that when protection resources are contended, > > priority can be applied to determine which parties utilize the > protection > > resources. > > > > (4) Page 7, the first paragraph: > > OLD: > > the resources for the protection path are fully committed, > > NEW > > the resources for the protection path are fully dedicated, > > > > OLD: > > resources may be planned but would not be committed until … > > NEW: > > resources may be planned but would not be utilized until … > > > > (5) In the second paragraph in page 7, > > OLD: > > "Hard Preemption" requires the programming of selectors at the > ingress of each shared segment to specify which backup path has > the highest priority when committing protection resources, the > others being preempted. > > NEW > > "Hard Preemption" requires the programming of selectors at the > ingress of each shared segment to specify the priorities of backup > paths, so that traffic of lower priority paths can be preempted. > > > > (6) The first paragraph of Section 4.1: > > OLD: > > … and commit the associated resources. The commitment of resources > > is dependent upon … > > NEW: > > … and coordinate the utilization of the associated shared resources. > > The resource utilization coordination is dependent upon … > > > > (7) The second paragraph of Section 4.1: > > OLD: > > When the reserved resources of the shared segments are committed to a > > particular protection path, there may not be sufficient resources > > available for an additional protection path. This then implies that > > if another working path of the SMP domain triggers a protection > > switch, the commitment of the resources may fail. In order to > > optimize the operation of the commitment and preparing for cases of > > multiple working paths failing, the commitment of the shared > > resources are be coordinated between the different working paths in > > the SMP network. > > NEW: > > When the reserved resources of the shared segments are utilized by a > > particular protection path, there may not be sufficient resources > > available for an additional protection path. This then implies that > > if another working path of the SMP domain triggers a protection > > switch, the resource utilization coordination may fail. The > different working paths in > > the SMP network are involved in the resource utilization > coordination. > > . > > > > (8) Section 5.1, > > OLD: > > … and commit the associated resources. > > NEW > > … and coordinate the utilization of the associated shared resources. > > > > (9) In Section 5.1, > > OLD: > > In the case of multiple working paths failing, the commitment of the > > shared resources SHALL be coordinated between the different working > > paths in the SMP network. > > NEW: > > In the case of multiple working paths failing, the shared resource > utilization > > coordination SHALL be between the different working > > paths in the SMP network. > > > > (10) Section 5.1.1. > > OLD: > > … because they already have been committed to the protection of, > for example, a higher priority working path. > > NEW: > > … because they already have been utilized for the protection of, > for example, a higher priority working path. > > > > (11) Section 5.2, the second bullet item: > > OLD: > > Resources of the shared segments SHALL be committed to the > > protection path … > > NEW: > > Resources of the shared segments SHALL be utilized by the > > protection path … > > > > (12) Section 5.2, the third bullet item: > > OLD: > > If multiple protection paths of equal priority are requesting > > allocation of the shared resources, the resources SHOULD be > > committed on a first come first served basis. > > NEW: > > If multiple protection paths of equal priority are requesting > > the shared resources, the resources SHOULD be > > assigned on a first come first served basis. > > > > (13) Section 5.2, the fourth bullet item: > > OLD: > > If the protection resources are committed to a protection path, > > whose working path has a lower priority, resources required for > > the higher priority path SHALL be committed to the higher priority > > path. > > NEW: > > If the protection resources are utilized by a protection path, > > whose working path has a lower priority, resources required for > > the higher priority path SHALL be assigned to the higher priority > > path. > > > > > > (14) Section 5.2. the seventh bullet item > > OLD: > > Once resources of shared segments have been successfully committed > > to a protection path, … > > NEW: > > Once resources of shared segments have been successfully utilized > > by a protection path, … > > > > (15) Section 5.3, the first paragraph, > > OLD: > > … request the commitment of protection resources. If the necessary > > shared resources are unavailable to be committed to the protection > > path, the endpoints … > > > > NEW: > > … request the coordination of the shared resource utilization. If > the necessary > > shared resources are unavailable, the endpoints … > > > > (16) Section 5.3, the second paragraph, > > OLD: > > Similarly, if preemption is supported and the resources currently > > committed for a particular working path are … > > NEW: > > Similarly, if preemption is supported and the resources currently > > utilized by a particular working path are … > > > > > > - Section 2, 1st paragraph, last sentence. This sentence really > defines > the scope/purpose of the document, i.e., "clarifies the instructions > to protocol designers producing solutions that satisfy the > requirements set out in this document." As such, I'd repeat this in > the abstract and move it to a more pronounced place in section 1 (or > 3). > > [Authors] We can add the following paragraph at the end of Section 1: > > “This document is intended to clarify the instructions to protocol > designers producing solutions that satisfy the requirements set > out in this document.†> > > > > - General comment: fate-sharing for co-routed bidirectional LSP > protection: How is co-routing preserved for the reverse path in SMP? > I'd assumed the protection switch coordination protocol would be > required to trigger a switchover of the reverse LSP in the co-routed > case, but don't see this in the document. > > [Authors] Fate-sharing is not required by this document. Even in > the PSC linear protection switching, such as RFC 6378 (PSC) and > RFC 7271 (PSC in APS mode), fate-sharing is not required as > unidirectional switching is allowed. This document does not impose > any restriction on co-routing, either. > > > > > - In section 4 and 5.2 you reference 5712 and 3209 as defining > preemption terminology and behavior. I think 6372 is the right > reference here as it defines both in the context of survivability and > in dependent of control plane. > > [Authors] One concern is that RFC 6372 describes both soft and > hard preemptions in the context of extra traffic, which is not > exactly the case for SMP. > > > > > - In section 4.2 you say "Therefore, it is suggested that this be > carried out under the control of a dynamic control plane similar to > GMPLS [RFC3945]." perhaps you mean "based on GMPLS"? If so, great, > please make the correction. If not, I think the debate of which > control protocol is used for MPLS-TP is way beyond the scope of this > document. > > [Authors] Yes, we will make the correction. > > > > > - Section 5.1, paragraph 1. Why are you using "SHOULD NOT" here? If > referring to solutions conformant with this document, then these are > informative statements, "and a non-control plane based SMP switchover > mechanism is used, the control plane SHALL NOT ...". If referring to > an operator's/user's choice of protection mechanism, I think the most > you can say is MAY. > > [Authors] The first case is the one we are aiming at. We will use > SHALL NOT. > > > > > - Section 5.2. "Tie-breaking rules SHALL be defined in scope of an SMP > domain." As this is a requirement, what you mean by "tie-breaking > rules" should be defined directly or by reference. > > [Authors] The sentence can be rewritten as: > > OLD: > > Tie-breaking rules SHALL be defined in scope of an SMP domain. > > NEW: > > In order to cover the situation where the first come first served > principle cannot resolve the contention among multiple equal > priority requests, i.e., when the requests occur simultaneously,, > tie-breaking rules SHALL be defined in scope of an SMP domain. > > > > > > > - Section 5.3. RFC6372 takes an approach where preemption notification > leverages the standard MPLS-TP OAM mechanisms, is there any reason to > do more / not just follow 6372? > > [Authors] We can add the following sentence at the end: > > “As described in [RFC6372], the event of preemption may be > detected by OAM and reported as a fault or a degradation of > traffic delivery.†> > > - Section 5.7. There may be coordination required on > soft-preemption as > well (depending on the cross-connects established during LSP > establishment) so coordinated switching should be supported > independent of preemption mode. > > [Authors] Yes, we will change the second paragraph from “SMP in > hard-preemption mode SHOULD …†to “SMP SHOULD …†and move the > changed paragraph above the first paragraph. > > > > > Nits: > > - Abstract: I don't recall the term "executive action" being used > in any > earlier related/referenced RFCs. Rather than introduce a new (and > undefined) term, perhaps you can use an existing one, e.g., > "protection switch"? > > [Authors] Yes, the term will be changed as you suggested. > > > > > - Section 1, paragraph 1. Do we really need another definition of > MPLS-TP to debate? I suggest just referencing your favorite MPLS-TP > document(s) and dropping the first four sentences. > > The last sentence also makes a subjective statement. Whether it is > critical or no is unnecessary. You can just say something like 6372 > provides a survivability framework for MPLS-TP and is the foundation > for this document. > > [Authors] The proposed text for the paragraph 1 is: > > “The MPLS Transport Profile (MPLS-TP) is described in [RFC5921], > > and [RFC6372] provides a survivability framework for MPLS-TP > > and is the foundation for this document.†> > > > > - Section 1, paragraph 3. Isn't the right reference 4427 not 4428? > Also drop the word linear, as it is an unnecessary qualifier and > 4427/4428 don't use it. > > [Authors] OK. > > > > > > > - Sections 3 (and to a lesser degree section 2) are really > introductory > text. I'm unsure as to why they aren't part of section 1. > > [Authors] Section 3 was intended to present a reference model for > SMP. Some text of Section 2 is repeated in Section 1 as you > suggested earlier. > > > > > > > - Section 3.2 should have a reference for "existing control plane > solutions for SMP within MPLS". > > [Authors] [RFC4206] will be added as a reference > > > - Section 3.2 again uses the "executive action" term. > > [Authors] OK, the term will be changed. > > > > > - Section 4.1. You say "two operations simultaneously". Do you really > mean "simultaneously" or merely that they must both occur for > protection to be provided? (Same comment in section 5.1. > > [Authors] Both actions should occur at the same time, or as > closely as possible to provide fast protection. > > > > > - Section 5.2. I suggest numbering the currently bulletted > requirements > list. > > [Authors] OK, we will use numbers. > > > > > - Section 5.2: First paragraph and forth bullet last sentence. These > both basically cover the same topic (preemption) and actually say > slightly different things. I suggest combine into a single > requirement to ensure consistency and full coverage of the topic. > > [Authors] The first paragraph is for soft-preemption, while the > fourth bullet belongs to the requirements of hard-preemption. > > > - Section 5.2, req 5. How does this relate to section 5.5? Shouldn't > the topics related to timing be consolidated? > > [Authors] Yes, req 5 can be moved to Section 5.5. > > > > > - Section 5.2: requirement 6 seems to be a subset of 7, so it > should be > dropped. > > [Authors] Yes, it will be deleted. > > > - Section 5.2, requirement 8. Isn't this a subset of 9? Why call out > just this one traffic treatment (sub) requirement? > > [Authors] Req. 9 will be deleted as it seems to require control > plane supports. > > > > - Section 5.3. s/MAY/will > > [Authors] OK. > > > > > - section 5.4: " When the working path detects.." detection is by the > node not the path. > > [Authors] Yes. We will simply say that “When the condition that > triggered the protection switching is cleared, …†> > > - Section 5.4, last sentence. This is only the 2nd time you imply that > the document covers requirements on a new protocol. I think this > point is currently too subtle in the document. (This point was also > made as a minor comment.) > > [Authors] As in other protection switching technologies, two modes > of operations (revertive and non-revertive) are required. > > > > > - section 5.6. RFC 6372 should be referenced > > [Authors] We will add “as described in [RFC6372]†to the ends of > two paragraphs for WTR timer and hold-off timer. > > > > ***** End of Comment resolution ***** > > > > > > > ------------------------------------------------------------------------ > *보낸 사람 : *"Lou Berger" > > *보낸 날짜 : *2014-06-22 01:00:48 ( +09:00 ) > *받는 사람 : *rtg-ads@tools.ietf.org > > > *참조 : *rtg-dir@ietf.org > >, > draft-ietf-mpls-smp-requirements.all@tools.ietf.org > > >, > mpls@ietf.org > > *제목 : *[mpls] RtgDir review: draft-ietf-mpls-smp-requirements-06.txt > > > Hello, > > I have been selected as the Routing Directorate reviewer for this > draft. The Routing Directorate seeks to review all routing or > routing-related drafts as they pass through IETF last call and IESG > review, and sometimes on special request. The purpose of the review is > to provide assistance to the Routing ADs. For more information > about the > Routing Directorate, please see > http://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir > > Although these comments are primarily for the use of the Routing > ADs, it > would be helpful if you could consider them along with any other IETF > Last Call comments that you receive, and strive to resolve them > through > discussion or by updating the draft. > > Document: draft-ietf-mpls-smp-requirements-06.txt > Reviewer: Lou Berger > Review Date: June 21 2014 > IETF LC End Date: 2014-06-23 > Intended Status: Informational > > Summary: > I have some minor concerns about this document that I think > should (must, actually) be resolved before publication. > > Comments: > > I think the document is well written and, other than a couple of > terminology related issues, easily understood. The document does > have a number of terminology and technical issues which should be > readily resolved prior to publication. > > Major Issues: > > Major issues are the type of concerns that will result in the > document being blocked until they are resolved. The Routing ADs will > become involved. Please include all of the major issues you have > found. Give as much context information as possible (e.g., section > numbers, paragraph counts). If you find no major issues, please > write: "No major issues found." > > - No major issues found. In particular, I expect all issues can be > resolved without AD intervention. Some of the minor issues, if not > resolved will be escalated to the AD/major issue category. > > Minor Issues: > > Minor issues are concerns about clarity or technical accuracy that > should be discussed and resolved before publication, but which would > normally be resolved between the authors and the reviewers. Please > include all of the minor issues you have found. Give as much context > information as possible (e.g., section numbers, paragraph counts). > If you find no minor issues, please write: "No minor issues found." > > - Document's usage of "committed" vs "allocated" resources: > > In section 1 the document introduces the notion that the > distinction between protection and restoration is based on when > resources are "committed". This difference from past > definition. RFC4427 and 6372 make the distinction that protection > and restoration differ based on when resources are *allocated* not > *committed*. To quote RFC 4427: > > The distinction between protection and restoration is made based > on the resource allocation done during the recovery LSP/span > establishment. The distinction between different types of > restoration is made based on the level of route computation, > signaling, and resource allocation during the restoration > LSP/span establishment. > > This difference also leads to come confused statements in the > document as well as ambiguity in the text, i.e. confusion by the > reader. The term "committed" is not tightly defined in this > document (or earlier work) and is used differently than how > "allocated" has been used. An example of this can be found in > Section 3.1 which states: > > However, the commitment of the resources, at least for the > shared segments, will only be finalized when the protection > path is actually activated. Therefore, for the purists - > regarding the terminology - SMP lies somewhere between > protection and restoration. > > Both sentences are problematic. In the first, commitment seems to > cover a "protection switch" would "connect" the protection path > but not the earlier "allocation" of resources. (Quoted terms are > used in earlier RFCs.) The second conclusion is based on the new > distinction of protection vs. restoration and is unnecessary with > the existing distinction. > > This issue exists in multiple places in the document where > "committed" is used and I'd recommend that each should be replaced > with terminology used in the referenced RFCs, i.e., "allocation", > "connection", "cross-connect", "protection switch(over)", ... > > Note I'm *not* highlighting all cases where there are problems in the > document related to this issue. There are a couple of places in the > document where I think it's possible that once this terminology > ambiguity is corrected that I'll have other substantive comments. > > - Section 2, 1st paragraph, last sentence. This sentence really > defines > the scope/purpose of the document, i.e., "clarifies the instructions > to protocol designers producing solutions that satisfy the > requirements set out in this document." As such, I'd repeat this in > the abstract and move it to a more pronounced place in section 1 (or > 3). > > - General comment: fate-sharing for co-routed bidirectional LSP > protection: How is co-routing preserved for the reverse path in SMP? > I'd assumed the protection switch coordination protocol would be > required to trigger a switchover of the reverse LSP in the co-routed > case, but don't see this in the document. > > - In section 4 and 5.2 you reference 5712 and 3209 as defining > preemption terminology and behavior. I think 6372 is the right > reference here as it defines both in the context of survivability and > in dependent of control plane. > > - In section 4.2 you say "Therefore, it is suggested that this be > carried out under the control of a dynamic control plane similar to > GMPLS [RFC3945]." perhaps you mean "based on GMPLS"? If so, great, > please make the correction. If not, I think the debate of which > control protocol is used for MPLS-TP is way beyond the scope of this > document. > > - Section 5.1, paragraph 1. Why are you using "SHOULD NOT" here? If > referring to solutions conformant with this document, then these are > informative statements, "and a non-control plane based SMP switchover > mechanism is used, the control plane SHALL NOT ...". If referring to > an operator's/user's choice of protection mechanism, I think the most > you can say is MAY. > > - Section 5.2. "Tie-breaking rules SHALL be defined in scope of an SMP > domain." As this is a requirement, what you mean by "tie-breaking > rules" should be defined directly or by reference. > > - Section 5.3. RFC6372 takes an approach where preemption notification > leverages the standard MPLS-TP OAM mechanisms, is there any reason to > do more / not just follow 6372? > > - Section 5.7. There may be coordination required on > soft-preemption as > well (depending on the cross-connects established during LSP > establishment) so coordinated switching should be supported > independent of preemption mode. > > Nits: > > - Abstract: I don't recall the term "executive action" being used > in any > earlier related/referenced RFCs. Rather than introduce a new (and > undefined) term, perhaps you can use an existing one, e.g., > "protection switch"? > > - Section 1, paragraph 1. Do we really need another definition of > MPLS-TP to debate? I suggest just referencing your favorite MPLS-TP > document(s) and dropping the first four sentences. > > The last sentence also makes a subjective statement. Whether it is > critical or no is unnecessary. You can just say something like 6372 > provides a survivability framework for MPLS-TP and is the foundation > for this document. > > - Section 1, paragraph 3. Isn't the right reference 4427 not 4428? > Also drop the word linear, as it is an unnecessary qualifier and > 4427/4428 don't use it. > > - Sections 3 (and to a lesser degree section 2) are really > introductory > text. I'm unsure as to why they aren't part of section 1. > > - Section 3.2 should have a reference for "existing control plane > solutions for SMP within MPLS". > > - Section 3.2 again uses the "executive action" term. > > - Section 4.1. You say "two operations simultaneously". Do you really > mean "simultaneously" or merely that they must both occur for > protection to be provided? (Same comment in section 5.1. > > - Section 5.2. I suggest numbering the currently bulletted > requirements > list. > > - Section 5.2: First paragraph and forth bullet last sentence. These > both basically cover the same topic (preemption) and actually say > slightly different things. I suggest combine into a single > requirement to ensure consistency and full coverage of the topic. > > - Section 5.2, req 5. How does this relate to section 5.5? Shouldn't > the topics related to timing be consolidated? > > - Section 5.2: requirement 6 seems to be a subset of 7, so it > should be > dropped. > > - Section 5.2, requirement 8. Isn't this a subset of 9? Why call out > just this one traffic treatment (sub) requirement? > > - Section 5.3. s/MAY/will > > - section 5.4: " When the working path detects.." detection is by the > node not the path. > > - Section 5.4, last sentence. This is only the 2nd time you imply that > the document covers requirements on a new protocol. I think this > point is currently too subtle in the document. (This point was also > made as a minor comment.) > > - section 5.6. RFC 6372 should be referenced > > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > From nobody Tue Jul 8 18:23:57 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 63B891A01C3; Tue, 8 Jul 2014 18:23:55 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -115.152 X-Spam-Level: X-Spam-Status: No, score=-115.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com 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AQHPl4mF1OunTubKs0CpX824dSlWBZuQXyiAgAUao4CAAXaOAA== Date: Wed, 9 Jul 2014 01:23:42 +0000 Message-ID: References: <20140704131127.29231.56989.idtracker@ietfa.amsl.com> <315041E4211CB84E86EF7C25A2AB583D34623EBA@xmb-rcd-x15.cisco.com> <7347100B5761DC41A166AC17F22DF1121B7E7AC7@eusaamb103.ericsson.se> In-Reply-To: <7347100B5761DC41A166AC17F22DF1121B7E7AC7@eusaamb103.ericsson.se> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.244.80] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/poRM-WYipbujWh-7_1ywhkphlXk Cc: "mpls@ietf.org" Subject: Re: [mpls] New Version Notification for draft-vgovindan-mpls-extended-bfd-disc-tlv-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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(ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 25EEC1A03EA for ; Wed, 9 Jul 2014 03:41:03 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.439 X-Spam-Level: X-Spam-Status: No, score=-1.439 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, HTML_OBFUSCATE_05_10=0.26, MIME_8BIT_HEADER=0.3, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Hq71ndJ16MJG for ; Wed, 9 Jul 2014 03:41:02 -0700 (PDT) Received: from mail-qa0-x234.google.com (mail-qa0-x234.google.com [IPv6:2607:f8b0:400d:c00::234]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 117161A03E9 for ; Wed, 9 Jul 2014 03:41:01 -0700 (PDT) Received: by mail-qa0-f52.google.com with SMTP id w8so5924744qac.11 for ; Wed, 09 Jul 2014 03:41:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:cc:content-type; bh=0289eQZ/FBDy5VPfjhkRvTzxLLVYmKvRdxIJUpawe44=; b=s38cMeUFxLmHEYDijwNb5A21CN+VYXqZLROeUrvzcyQzKHFC7lRHWPSkdLyRb08cSA kvT4bh5PaZn8GQSRTqXZ9uaHxddR9fV1s2IjEljQJqI9FkIkPv8/+rHsJ3tZoZZsjNoP ViixBmkN7ZhZvj1GPndV22L6/uH44w7m5yOWzWdzXtWIMWcpLH3J1Gi0qN3Bt3/3KntH uRczYktWbLwWMx/ZSfVj4M1Zmw6P1/3IZoYka75w53LFYP/gM9s1FU4gRdIpO0hrJLc8 2HPK1BkVyzgQwfKT8t7TYuQBQi8ybqn2K93XnT0sMxbBc2nThMpNys3bbOO7RxPOJxYt wcyw== MIME-Version: 1.0 X-Received: by 10.140.30.73 with SMTP id c67mr64439211qgc.16.1404902461280; Wed, 09 Jul 2014 03:41:01 -0700 (PDT) Received: by 10.224.93.10 with HTTP; Wed, 9 Jul 2014 03:41:01 -0700 (PDT) Date: Wed, 9 Jul 2014 18:41:01 +0800 Message-ID: From: weiqiang cheng To: "mpls@ietf.org" Content-Type: multipart/alternative; boundary=001a113a35a42617f904fdc05823 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/B8oB2RV8A8WZEPNLuyT8QFYhKQ0 Cc: "draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org" Subject: [mpls] =?utf-8?q?=5BMPLS=5D_Any_comments_on_the_draft_of_MPLS-TP_?= =?utf-8?q?Shared-Ring_protection_=28MSRP=29_mechanism_for_ring_topology?= =?utf-8?b?4oCdID8=?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Jul 2014 10:41:03 -0000 --001a113a35a42617f904fdc05823 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi There, We uploaded the new version draft =E2=80=9CMPLS-TP Shared-Ring protection (MSRP) mechanism for ring topology=E2=80=9D https://datatracker.ietf.org/doc/draft-cheng-mpls-tp-shared-ring-protection= / We authors would like to see comments on this draft. Please help to review it and It would be highly appreciated to send your comments on the mailing list. Thanks, Weiqiang Cheng --001a113a35a42617f904fdc05823 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable 
Hi There,
We uploaded the new version draft =E2=80=9CMPLS-TP Shared-Ring protection (MSRP) mechanism for ring topolo=
gy=E2=80=9D
https://datatracker.ietf.org/doc/dr=
aft-cheng-mpls-tp-shared-ring-protection/
We authors would like to see comments on this draft. Please help=
 to review it and It would be highly appreciated to send your comments on t=
he mailing list.
=C2=A0
Than=
ks,
Weiqiang Cheng
--001a113a35a42617f904fdc05823-- From nobody Wed Jul 9 04:08:00 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3B9821A03F2 for ; Wed, 9 Jul 2014 04:07:55 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 1.55 X-Spam-Level: * X-Spam-Status: No, score=1.55 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, CHARSET_FARAWAY_HEADER=3.2, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, J_CHICKENPOX_52=0.6, MIME_8BIT_HEADER=0.3, RCVD_IN_DNSWL_NONE=-0.0001, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id S6aWe-9NDmlu for ; Wed, 9 Jul 2014 04:07:54 -0700 (PDT) Received: from BLU004-OMC4S21.hotmail.com (blu004-omc4s21.hotmail.com [65.55.111.160]) (using TLSv1.2 with cipher AES128-SHA256 (128/128 bits)) (No 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--_00624080-bee7-48fc-b086-c90df0cdde6a_-- From nobody Wed Jul 9 04:10:58 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 00CFD1A03F6 for ; Wed, 9 Jul 2014 04:10:55 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.551 X-Spam-Level: X-Spam-Status: No, score=-4.551 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, MIME_8BIT_HEADER=0.3, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 5whzERFyS_36 for ; Wed, 9 Jul 2014 04:10:53 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 6DFC61A03F1 for ; Wed, 9 Jul 2014 04:10:52 -0700 (PDT) Received: from 172.18.7.190 (EHLO lhreml406-hub.china.huawei.com) ([172.18.7.190]) by lhrrg01-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id BJU12193; Wed, 09 Jul 2014 11:10:51 +0000 (GMT) Received: from nkgeml409-hub.china.huawei.com (10.98.56.40) by lhreml406-hub.china.huawei.com (10.201.5.243) with Microsoft SMTP Server (TLS) id 14.3.158.1; Wed, 9 Jul 2014 12:10:27 +0100 Received: from NKGEML512-MBX.china.huawei.com ([169.254.7.249]) by nkgeml409-hub.china.huawei.com ([10.98.56.40]) with mapi id 14.03.0158.001; Wed, 9 Jul 2014 19:10:24 +0800 From: "Dongjie (Jimmy)" To: weiqiang cheng , "mpls@ietf.org" Thread-Topic: =?utf-8?B?W21wbHNdIFtNUExTXSBBbnkgY29tbWVudHMgb24gdGhlIGRyYWZ0IG9mIE1Q?= =?utf-8?B?TFMtVFAgU2hhcmVkLVJpbmcgcHJvdGVjdGlvbiAoTVNSUCkgbWVjaGFuaXNt?= =?utf-8?B?IGZvciByaW5nIHRvcG9sb2d54oCdID8=?= Thread-Index: AQHPm2LAyQYWN4Lt20KSjepCmlFg25uXk54g Date: Wed, 9 Jul 2014 11:10:23 +0000 Message-ID: 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--_000_76CD132C3ADEF848BD84D028D243C927336BE7CDnkgeml512mbxchi_-- From nobody Wed Jul 9 05:04:22 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id ACD161A04A2 for ; Wed, 9 Jul 2014 05:04:18 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.099 X-Spam-Level: X-Spam-Status: No, score=-1.099 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, J_CHICKENPOX_28=0.6, MIME_8BIT_HEADER=0.3, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6Pqkw8GpSzXg for ; Wed, 9 Jul 2014 05:04:15 -0700 (PDT) Received: from mail-qa0-x229.google.com (mail-qa0-x229.google.com [IPv6:2607:f8b0:400d:c00::229]) (using TLSv1 with cipher 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10.224.93.10 with HTTP; Wed, 9 Jul 2014 05:04:13 -0700 (PDT) In-Reply-To: References: Date: Wed, 9 Jul 2014 20:04:13 +0800 Message-ID: From: weiqiang cheng To: =?UTF-8?B?5pu+5bO75rOi?= Content-Type: multipart/alternative; boundary=001a11390c9cbe117e04fdc18138 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/4ZK6HD4h3hQT3tsCTnIrCglYeYA Cc: "mpls@ietf.org" , "draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org" Subject: Re: [mpls] =?utf-8?q?=5BMPLS=5D_Any_comments_on_the_draft_of_MPLS-TP_?= =?utf-8?q?Shared-Ring_protection_=28MSRP=29_mechanism_for_ring_topology?= =?utf-8?b?4oCdID8=?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Jul 2014 12:04:20 -0000 --001a11390c9cbe117e04fdc18138 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable HI Bobo, Thanks a lot for your questions. please see my answer in line: 1. the different between "normal wrapping" and "P2P shout wrapping". [WQ]: In Normal wrapping, protection switching executes at both nodes neighbored failure respectively,so the traffic will be wrapped twice. For Short wrapping protection, switching only executes at up-stream node which neighbored to failure,the destination node will extract the flow from the protection ring directly.This scheme can optimize latency and bandwidth. 2. can i use the RING APS protocol defined in G.8132 to implement the scheme of this document. [WQ]: As I know G.8132 is a draft in ITU-T and ITU-T seams no release plan for it now. The principle is similar. But this draft's ring construction is totally different from G.8132. 3. for the 'dual-node interconnected rings', there must be the same forwarding information between node C and node D in figure 11? [WQ]: Yes, Node C and Node D should sync the forwarding information of LSPs that traverse the interconnected rings, so that both interconnection nodes can terminate the source ring runnel and forward it to the correct destination ring tunnel in interconnected ring. B.R. Weiqiang Cheng 2014-07-09 19:07 GMT+08:00 =E6=9B=BE=E5=B3=BB=E6=B3=A2 : > hi,Weiqiang Cheng > i have some question about the > "draft-cheng-mpls-tp-shared-ring-protection-02". > 1. the different between "normal wrapping" and "P2P shout wrapping". > 2. can i use the RING APS protocol defined in G.8132 to implement the > scheme of this document. > 3. for the 'dual-node interconnected rings', there must be the same > forwarding information between node C and node D in figure 11? > > Best Regards! > BoBo > > > ------------------------------ > Date: Wed, 9 Jul 2014 18:41:01 +0800 > From: chengwq@gmail.com > To: mpls@ietf.org > CC: draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org > Subject: [mpls] [MPLS] Any comments on the draft of MPLS-TP Shared-Ring > protection (MSRP) mechanism for ring topology=E2=80=9D ? > > > Hi There, > > We uploaded the new version draft =E2=80=9CMPLS-TP Shared-Ring protection= (MSRP) mechanism for ring topology=E2=80=9D > > https://datatracker.ietf.org/doc/draft-cheng-mpls-tp-shared-ring-protecti= on/ > > We authors would like to see comments on this draft. Please help to revie= w it and It would be highly appreciated to send your comments on the mailin= g list. > > > > Thanks, > > Weiqiang Cheng > > > _______________________________________________ mpls mailing list > mpls@ietf.org https://www.ietf.org/mailman/listinfo/mpls > --001a11390c9cbe117e04fdc18138 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
HI Bobo,

Thanks a lot for your question= s. please see my answer in line:

1. =C2=A0the different between "normal wrapping&qu= ot; and "P2P shout wrapping".

[WQ]: In Normal wrapping, protection switching executes= at both nodes neighbored failure respectively,so the =C2=A0traffic will be= wrapped twice. For Short wrapping protection, switching only executes at u= p-stream node which neighbored to failure,the destination node will extract= the flow from the protection ring directly.This scheme can optimize latenc= y and bandwidth.
=
2. =C2=A0can i use the RING APS protocol defined in= G.8132 to implement the scheme of this document.
=
[WQ]: As I know G.8132 is a draft in ITU-T and ITU-= T seams no release plan for it now. The principle is similar. But this draf= t's ring construction is totally different from G.8132.
=
3. =C2=A0for the 'dual-node interconnected ring= s', there must be the same forwarding information between node C and no= de D in figure 11?
=
[WQ]: Yes, Node C and Node D should sync the forwar= ding information of LSPs that traverse the interconnected rings, so that bo= th interconnection nodes can terminate the=C2=A0source ring runnel and for= ward it to the correct destination ring tunnel in interconnected ring.

B.R.
Weiqiang Cheng


2014-07= -09 19:07 GMT+08:00 =E6=9B=BE=E5=B3=BB=E6=B3=A2 <zjbdamo@hotmail.com= >:
hi,Weiqiang Cheng
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 i= have some question about the "draft-cheng-mpls-tp-shared-ring-protect= ion-02".
=C2=A0 1.=C2=A0 the different between "normal wrappin= g" and "P2P shout wrapping".
=C2=A0 2.=C2=A0 can i use the RING APS protocol defined in G.8132 to implem= ent the scheme of this document.
=C2=A0 3.=C2=A0 for the 'dual-node = interconnected rings', there must be the same forwarding information be= tween node C and node D in figure 11?

Best Regards!
BoBo


Date: Wed, 9 Jul 2014 18:41:= 01 +0800
From: ch= engwq@gmail.com
To: mpls@ietf.org
CC: draft-cheng-mpls-tp-shared-ring-protection@tools.ie= tf.org
Subject: [mpls] [MPLS] Any comments on the draft of MPLS-TP S= hared-Ring protection (MSRP) mechanism for ring topology=E2=80=9D ?


Hi The=
re,
We uploaded the new version draft=
 =E2=80=9CMPLS-TP Shared-Ring protection (MSRP)=
 mechanism for ring topology=E2=80=9D
https://datatrack=
er.ietf.org/doc/draft-cheng-mpls-tp-shared-ring-protection/

We authors would like to see comments on this dra=
ft. Please help to review it and It would be highly appreciated to send you=
r comments on the mailing list.


=C2=A0
Than=
ks,
Weiqiang Cheng

_______________________________________________ mpls mailing list mpls@ietf.org ht= tps://www.ietf.org/mailman/listinfo/mpls

--001a11390c9cbe117e04fdc18138-- From nobody Wed Jul 9 05:29:59 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5BBA21A04C5 for ; Wed, 9 Jul 2014 05:29:57 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -15.152 X-Spam-Level: X-Spam-Status: No, score=-15.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qQFRr7vpBLNl for ; Wed, 9 Jul 2014 05:29:55 -0700 (PDT) Received: from alln-iport-3.cisco.com (alln-iport-3.cisco.com [173.37.142.90]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 7F3B01A04A2 for ; Wed, 9 Jul 2014 05:29:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1105; q=dns/txt; s=iport; t=1404909010; x=1406118610; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=a5JPnBxQ5rx86xkMZoWrlM1NtesW2pqGPVBF8/Q2Kxc=; b=kfR7UssPw1Sqe/N4vCaKnNFfVu7KwmdwpROhUcxaWUzIFFsY3VZ3lqNW e/s6ab65RY3yruxT7DiILqNKra5Kn43nGQrScB3+9BW7rXevTG5IgQSkd CkL+rGCeLJ9xXaPMQqluaSG5KqDSMrTx173pR/6F94GSjxvXeyaGzWFBg I=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AhwFAB41vVOtJA2N/2dsb2JhbABZgw6BLMU7gSEBgREWdYQDAQEBBDoxAwsMAgICAQgRBAEBCxQFBAcbFxQJCAIEAQ0FCIg6yGMXBI5cEAIBHjEHBoMngRYBBK8CggGBQoIw X-IronPort-AV: E=Sophos;i="5.01,631,1400025600"; d="scan'208";a="59417294" Received: from alln-core-8.cisco.com ([173.36.13.141]) by alln-iport-3.cisco.com with ESMTP; 09 Jul 2014 12:30:09 +0000 Received: from xhc-rcd-x01.cisco.com (xhc-rcd-x01.cisco.com [173.37.183.75]) by alln-core-8.cisco.com (8.14.5/8.14.5) with ESMTP id s69CTsRY025826 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Wed, 9 Jul 2014 12:29:54 GMT Received: from xmb-rcd-x13.cisco.com ([169.254.3.17]) by xhc-rcd-x01.cisco.com ([173.37.183.75]) with mapi id 14.03.0123.003; Wed, 9 Jul 2014 07:29:54 -0500 From: "Siva Sivabalan (msiva)" To: Loa Andersson , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , Adrian Farrel Thread-Topic: Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document Thread-Index: AQHPmeuq415gEYUmrESh7HlYbkakNZuXrwIw Date: Wed, 9 Jul 2014 12:29:53 +0000 Message-ID: References: <53BAA7BA.2060903@pi.nu> In-Reply-To: <53BAA7BA.2060903@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.242.58] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/0DdJsQSzyi0bDQ4Vfy4dIxMVqu0 Cc: "draft-bryant-mpls-oam-udp-return@tools.ietf.org" Subject: Re: [mpls] Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Jul 2014 12:29:57 -0000 Support as an author. -----Original Message----- From: Loa Andersson [mailto:loa@pi.nu]=20 Sent: Monday, July 07, 2014 9:59 AM To: mpls@ietf.org; mpls-chairs@tools.ietf.org; Adrian Farrel Cc: draft-bryant-mpls-oam-udp-return@tools.ietf.org Subject: Poll to see if we have support to make draft-bryant-mpls-oam-udp-r= eturn an mpls working group document Working Group, The authors of draft-bryant-mpls-oam-udp-return has informed us that the dr= aft is ready to be polled to see if we have consensus to make it a working = group document. This mail starts a two week adoption poll. We have not yet done the IPR poll, it will be done in parallel to the adopt= ion poll. There are no IPR disclosed against this draft. Please send your comments to the mpls working group mailing list (mpls@ietf.org) This adoption poll ends Juli 21, 2014! /Loa for the mpls wg co-chairs --=20 Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Wed Jul 9 05:45:50 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1819E1A0535 for ; Wed, 9 Jul 2014 05:45:49 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.267 X-Spam-Level: X-Spam-Status: No, score=-2.267 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, IP_NOT_FRIENDLY=0.334, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6varvvJhn9e3 for ; Wed, 9 Jul 2014 05:45:47 -0700 (PDT) Received: from mx0b-00103a01.pphosted.com (mx0b-00103a01.pphosted.com [67.231.152.227]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 6610A1A0502 for ; Wed, 9 Jul 2014 05:45:47 -0700 (PDT) Received: from pps.filterd (m0002317.ppops.net [127.0.0.1]) by mx0b-00103a01.pphosted.com (8.14.5/8.14.5) with SMTP id s69CjAHD031216; Wed, 9 Jul 2014 08:45:41 -0400 Received: from vawvcgsie2k1301.ciena.com (LIN1-118-36-35.ciena.com [63.118.36.35]) by mx0b-00103a01.pphosted.com with ESMTP id 1n0sp9s3nv-1 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=NOT); Wed, 09 Jul 2014 08:45:41 -0400 Received: from ONWVEXCHHT02.ciena.com (10.128.6.17) by VAWVCGSIE2K1301.ciena.com (10.4.62.15) with Microsoft SMTP Server (TLS) id 15.0.847.32; Wed, 9 Jul 2014 08:45:40 -0400 Received: from ONWVEXCHMB04.ciena.com ([::1]) by ONWVEXCHHT02.ciena.com ([::1]) with mapi; Wed, 9 Jul 2014 08:45:39 -0400 From: "Shah, Himanshu" To: "Siva Sivabalan (msiva)" , Loa Andersson , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , Adrian Farrel Date: Wed, 9 Jul 2014 08:45:39 -0400 Thread-Topic: Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document Thread-Index: AQHPmeuq415gEYUmrESh7HlYbkakNZuXrwIwgAAEMdA= Message-ID: <40746B2300A8FC4AB04EE722A593182B75000F8F@ONWVEXCHMB04.ciena.com> References: <53BAA7BA.2060903@pi.nu> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.12.52, 1.0.14, 0.0.0000 definitions=2014-07-09_03:2014-07-09,2014-07-09,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=7.0.1-1402240000 definitions=main-1407090164 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/tc16rFrpbxUaCDAoDb0Oha8p9cw Cc: "draft-bryant-mpls-oam-udp-return@tools.ietf.org" Subject: Re: [mpls] Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Jul 2014 12:45:49 -0000 Support to adopt this as a working group draft. /himanshu -----Original Message----- From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Siva Sivabalan (msiv= a) Sent: Wednesday, July 09, 2014 8:30 AM To: Loa Andersson; mpls@ietf.org; mpls-chairs@tools.ietf.org; Adrian Farrel Cc: draft-bryant-mpls-oam-udp-return@tools.ietf.org Subject: Re: [mpls] Poll to see if we have support to make draft-bryant-mpl= s-oam-udp-return an mpls working group document Support as an author. -----Original Message----- From: Loa Andersson [mailto:loa@pi.nu]=20 Sent: Monday, July 07, 2014 9:59 AM To: mpls@ietf.org; mpls-chairs@tools.ietf.org; Adrian Farrel Cc: draft-bryant-mpls-oam-udp-return@tools.ietf.org Subject: Poll to see if we have support to make draft-bryant-mpls-oam-udp-r= eturn an mpls working group document Working Group, The authors of draft-bryant-mpls-oam-udp-return has informed us that the dr= aft is ready to be polled to see if we have consensus to make it a working = group document. This mail starts a two week adoption poll. We have not yet done the IPR poll, it will be done in parallel to the adopt= ion poll. There are no IPR disclosed against this draft. Please send your comments to the mpls working group mailing list (mpls@ietf.org) This adoption poll ends Juli 21, 2014! /Loa for the mpls wg co-chairs --=20 Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 _______________________________________________ mpls mailing list mpls@ietf.org https://www.ietf.org/mailman/listinfo/mpls From nobody Wed Jul 9 05:53:34 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B7A3F1A05D1 for ; Wed, 9 Jul 2014 05:53:23 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.095 X-Spam-Level: X-Spam-Status: No, score=-1.095 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HELO_IS_SMALL6=0.556, HTML_FONT_LOW_CONTRAST=0.001, HTML_MESSAGE=0.001, J_CHICKENPOX_52=0.6, MIME_8BIT_HEADER=0.3, RP_MATCHES_RCVD=-0.651, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id zH4mBYf4ySdF for ; 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charset="UTF-8" Content-Transfer-Encoding: quoted-printable =0A
=0A
=0A=0A=0A=0A

Hi Wei qiang,

=0A

 

=0A

I have a comment= =0Aon the "RPS request code"=0Ain 3.1.2  RPS PDU= structure. Could MSRP be extended to support=0A"Signal Degrade (SD)" as a= trigger condition? 

=0A

Dear Authors,

as the scope of the document includes MPLS data plan= e I’ve included MPLS WG in the discussion. Hope you don’t mind.=

Please find my notes to the draft below:<= /p>

·         Section 2 states  “S-BFD packets = are transmitted with IP header, UDP header and BFD control header”. D= oes that mean that ACH encapsulation is outside the scope of this document = as in that case S-BFD packets would not have IP and UDP headers. If that is the case, then clarification of the scope seems ap= propriate.

·         Section 2 introduces “explicitly label= switched” scenario. What is it?

·         Section 2.1, bullet describing selection of = Destination IP address. The RFC 5884 allows use of the whole range rather t= han one address:

“The destination IP= address MUST be randomly chosen from the 127/8 range for IPv4 and  fr= om the 0:0:0:0:0:FFFF:7F00/104 range for IPv6 with the following exception.= ”

The document, as worded, = restricts use of Destination IP address to exercise particular path among a= vailable multi-paths, as suggested in the RFC 5884.

I’d suggest to use = explanation from Section 7 of the RFC 5884.

·         Note that if IP/UDP encapsulation used for S= -BFD there could not be “new associated channel type for S-BFD”= as 0x0021 and 0x0057 must be used for IPv4 and IPv6 accordingly. Or was th= e Ed.Note for PW-ACH encapsulation? But Section 3 discusses only IP routing of S-BFD pong.

 

Thank you for your kind = consideration.

 

Regards,

    =     Greg

--_000_7347100B5761DC41A166AC17F22DF1121B7E8F2Deusaamb103erics_-- From nobody Wed Jul 9 16:41:21 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id F3FD91B2848 for ; Wed, 9 Jul 2014 16:41:19 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -115.152 X-Spam-Level: X-Spam-Status: No, score=-115.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 1ucCiI5-JEN2 for ; Wed, 9 Jul 2014 16:41:18 -0700 (PDT) Received: from alln-iport-1.cisco.com (alln-iport-1.cisco.com [173.37.142.88]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 775611B283E for ; Wed, 9 Jul 2014 16:41:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2913; q=dns/txt; s=iport; t=1404949284; x=1406158884; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=CvQlMma5dBPVAsaUUUrU0BZXaV7Zb14KlD+sLHLbsMQ=; b=ERhgVFBbY+5vRrodt8hPla4++ZbkHgueDymct93dwkhhWPLuKDlGiHov OXMSWJuG0MdKSjCmg+UAwtH7/UAqYmuoW3v11Sa5m79c7Uzb12AXg5oPT 8Fg67X/VOi5v/EXio8VddxnEVRtMpoqJzlc+MVIJ7JQygjg/hLHtzmllr 8=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgwFALHRvVOtJA2K/2dsb2JhbABPCoJqJIEfDcZlAYEHFnWEAwEBAQMBOj0CDAQCAQgRBAEBCxQQMh0IAgQOBQiIMggByEgXjmYrBisHAgSDJ4EWAQSvAoNDgjA X-IronPort-AV: E=Sophos;i="5.01,634,1400025600"; d="scan'208";a="59555683" Received: from alln-core-5.cisco.com ([173.36.13.138]) by alln-iport-1.cisco.com with ESMTP; 09 Jul 2014 23:41:23 +0000 Received: from xhc-rcd-x05.cisco.com (xhc-rcd-x05.cisco.com [173.37.183.79]) by alln-core-5.cisco.com (8.14.5/8.14.5) with ESMTP id s69NfHtk001599 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL) for ; Wed, 9 Jul 2014 23:41:17 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-rcd-x05.cisco.com ([173.37.183.79]) with mapi id 14.03.0123.003; Wed, 9 Jul 2014 18:41:17 -0500 From: "Nobo Akiya (nobo)" To: "Nagendra Kumar Nainar (naikumar)" Thread-Topic: New Version Notification for draft-akiya-mpls-lsp-ping-lag-multipath-00.txt Thread-Index: AQHPh0sKZ/vjNgoGA02gD6R1/DNUlZtviMsAgAAGuSCAAWXvgIAMTauggBet8gCAAHYg8IAAQuAAgALj8yA= Date: Wed, 9 Jul 2014 23:41:15 +0000 Message-ID: References: <20140613210400.13388.18750.idtracker@ietfa.amsl.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.255.16] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/gPknf0kg14xChhIqeDt8Eq83rXw Cc: "mpls@ietf.org" Subject: Re: [mpls] New Version Notification for draft-akiya-mpls-lsp-ping-lag-multipath-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Jul 2014 23:41:20 -0000 Hi Nagendra, > -----Original Message----- > From: Nagendra Kumar Nainar (naikumar) > Sent: Monday, July 07, 2014 10:26 PM > To: Nobo Akiya (nobo) > Cc: mpls@ietf.org > Subject: Re: New Version Notification for draft-akiya-mpls-lsp-ping-lag- > multipath-00.txt >=20 > Hi Nobo, >=20 > Good question. I think you meant E and not C, since C has LAG as upstream= ? >=20 > Assuming you were asking what will E send, then: >=20 > Even if E does not have any upstream/downstream LAG, E will still include > LAG Intf Info TLV in the MPLS echo reply, if it understands this TLV. Thi= s is > how A learns whether or not E is capable of following the procedures > described in this document. Otherwise lack of LAG upstream/downstream > information becomes ambiguous to A: there is no upstream/downstream > LAG on E vs. E didn't understand the LAG procedures (i.e. ignored the opt= ion > TLV and proceeded) but may have upstream/downstream LAG. >=20 > So, LAG Intf Info TLV in MPLS echo reply is to let the initiator know: > - Responder understands this mechanism. > - U bit to indicate that responder is capable of providing Detailed Inter= face > and Label Stack TLV. > - D bit to indicate that responder is capable of providing DDMAP with LAG > info. >=20 > I wanted to break up the (U)pstream and (D)ownstream capabilities, since > on some products, doing one could be more difficult than the other one. >=20 > Yes, it is E :). That makes sense. So I think E will set U and= D to > zero to indicate there is no LAG details but I understand this feature :)= . May > be this can be clarified in the draft?. Sure, how about changes in Section 3. [old] These procedures allow initiating LSR to: o Identify whether responder LSR understands this mechanism. o Identify whether each DDMAP describes a LAG interface or a non-LAG interface. [new] These procedures allow initiating LSR to: o Mandating the responder LSR to always add the LAG Interface Info TLV in the MPLS echo reply allows the initiating LSR to identify whether responder LSR understands this mechanism o The value of the LAG Description Indicator flag in DS Flags will allo= w the initiating LSR to identify whether each DDMAP describes a LAG interface or a non-LAG interface Will that work? >=20 >=20 > Hmm... yes, that text was copied from RFC4379, but it's a bit confusing. > Let me change that: >=20 > [old] > The Interface Index Sub-TLV describes the index assigned by the > upstream LSR to the interface. >=20 > [new] > The Interface Index Sub-TLV describes the index assigned by this > LSR to the interface. >=20 > Would that work? >=20 > Or "The Interface Index Sub-TLV describes the index assigned > by local LSR to the egress interface"?. Accepted. Thank! -Nobo From nobody Wed Jul 9 17:34:41 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id BA6931A00A8 for ; Wed, 9 Jul 2014 17:34:38 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -114.552 X-Spam-Level: X-Spam-Status: No, score=-114.552 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, J_CHICKENPOX_31=0.6, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id SW_PxxmV3c7F for ; Wed, 9 Jul 2014 17:34:36 -0700 (PDT) Received: from alln-iport-3.cisco.com (alln-iport-3.cisco.com [173.37.142.90]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B21C71A0086 for ; Wed, 9 Jul 2014 17:34:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=5057; q=dns/txt; s=iport; t=1404952512; x=1406162112; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=UG1yq4IMwP4kJCU1EpauwTuqppkyHZp2/9dVdmAL9Yw=; b=Igw40Gn8UC8l+UBPW4JkwXJODhQUyQXt0iBfuoPWTdFc5OAc7vBOYxuo WLtd4wnJOm43I1PR7x79mtLo097278Y2Mk5geyD+2Jk474VPzIQOaLyyB iky/UwsaSAKTZGa7sC+osyvFLPYjZ8MpIOk7vso4rQn3GLHqHt0nHNhX6 Q=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Ag0FAAvfvVOtJA2I/2dsb2JhbABZgmokUlq/JIdBAYEHFnWEAwEBAQMBDiwrAgsFAgULAgEIIhQQMiUCBA4NE4gfCAEMyB4XjxExB4MtgRYFnD6SRIIBgUKBcCQc X-IronPort-AV: E=Sophos;i="5.01,635,1400025600"; d="scan'208";a="59609240" Received: from alln-core-3.cisco.com ([173.36.13.136]) by alln-iport-3.cisco.com with ESMTP; 10 Jul 2014 00:35:11 +0000 Received: from xhc-rcd-x09.cisco.com (xhc-rcd-x09.cisco.com [173.37.183.83]) by alln-core-3.cisco.com (8.14.5/8.14.5) with ESMTP id s6A0YZIB022148 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Thu, 10 Jul 2014 00:34:35 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-rcd-x09.cisco.com ([173.37.183.83]) with mapi id 14.03.0123.003; Wed, 9 Jul 2014 19:34:35 -0500 From: "Nobo Akiya (nobo)" To: Sam Aldrin Thread-Topic: [mpls] New Version Notification for draft-akiya-mpls-lsp-ping-lag-multipath-00.txt Thread-Index: AQHPh0sKZ/vjNgoGA02gD6R1/DNUlZtviMsAgCZOLID//65qEIAAaXQAgAKhV1A= Date: Thu, 10 Jul 2014 00:34:34 +0000 Message-ID: References: <20140613210400.13388.18750.idtracker@ietfa.amsl.com> <10150BDE-17FD-43D0-9DE4-6E0CAAF3BD5E@gmail.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.255.16] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/Lyot-I9t4oxYQJES_VyvbsNhbI8 Cc: "mpls@ietf.org" Subject: Re: [mpls] New Version Notification for draft-akiya-mpls-lsp-ping-lag-multipath-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Jul 2014 00:34:39 -0000 Hi Sam, > Thanks, Nobo, for quick response. Sorry for the delay in my second response :D > >> 2. Could you clarify the following? In the case of LAG interface, for > >> a given FEC, will there be different label stack for each > >> sub-interface type? If not, i.e. same label stack but differ sub i.f, > >> which multipath type one could use to determine hash computation? > > > > I think I understand your question ... but if my answers are not what y= ou > were asking, do elaborate. For a given FEC, the incoming & outgoing label= s > will be the same for all LAG members when traversing over a LAG to reach > the downstream. Of course SR could assign an Adj-SID for a LAG member, > and explicitly steer the packets over the specific LAG member, but it wou= ld > no longer be considered to travel over the LAG at that point. Similar if = RSVP > was to pin-down a specific LAG member. So the LAG is treated as one logic= al > interface by the label binding procedures, thus same labels for every LAG > member. > Few questions, >=20 > Because you mentioned it is L2 interfaces only, I was wondering whether L= 3 > header is taken into consideration or not! I see, actual data carried on the LSP may be "whatever", but for the purpos= e of LSP Traceroute multipath discovery, we can assume that multipath is go= ing to be performed with destination IP or Flow/Entropy Label. > Secondly, assuming if member is not pinned to a specific LSP, is the > validation for FEC? If so, how is that being done? when do you consider L= SP > ping/trace failure? As it is sub member failure, the interface is still r= unning > and packets are still fwd'd. If a LAG member is pinned to a specific LSP, then this document does not im= pose any changes. Thanks for pointing this out though, I think it's worth s= pelling that out in the document. What do you think about following text at= the end of Section 2 (Overview). Note that the mechanism described in this document does not impose any changes to scenarios where an LSP is pinned down to a particular LAG member (i.e. the LAG is not treated as one logical interface by the LSP). > >> 4. Also, how is DDMAP interface info validated? I believe the LAG > >> member link # is local. What all fields being validated for LAG interf= ace? > > > > When MPLS echo request traverses over all LAG members (i.e. different > interface index) to the nexthop, then the packets should have terminated > on different incoming LAG members at the downstream (different interface > index). > > > > For supported/unsupported scenarios, please view: > > http://tools.ietf.org/html/draft-akiya-mpls-lsp-ping-lag-multipath-00# > > appendix-A > I think appendix sections are very imp to consider and should be in main > sections. I agree that Appendix is useful. At the same time, I'd like the main to foc= us on the problem and the solution (otherwise the document could become eve= n more difficult to read). How about I add explicit xref to Appendix from t= he Overview. ... o In Section 7, the Interface Index Sub-TLV; o In Section 8, the Detailed Interface and Label Stack TLV; o In Appendix A, issues with LAG having L2 Switch. <---- this entry! > From high level, this addition will help discover various LAG members > associated with the data path of an LSP. But I think it is difficult to v= alidate > against a given FEC. Because the DDMAP info of LAG member sent cannot be > validated. If it is indeed could be validated, should be documented in th= e ID. Good point. I think Section 4 (Mechanism to Validate L2 ECMP Traversal) can= use more texts to describe the what can be validated. How about we make so= me changes in the Section 4 (Mechanism to Validate L2 ECMP Traversal). [old] Described procedures allow initiating LSR to know: o The expected load balance information of every LAG member link, at LSR with TTL=3Dn. o The actual incoming interface at LSR with TTL=3Dn+1, including the interface index of LAG member link if incoming interface is a LAG interface. [new] Described procedures allow initiating LSR to know: o The expected load balance information of every LAG member link, at LSR with TTL=3Dn. o With specific entropy, the expected interface index of the outgoing LAG member link at TTL=3Dn. o With specific entropy, the interface index of the incoming LAG member link at TTL=3Dn+1. Expectation is that there's a relationship between the interface index of the outgoing LAG member link at TTL=3Dn and the interface index of the incoming LAG member link at TTL=3Dn+1 for all discovered entropies. In other words, set of entropies that load balances to outgoing LAG member link X at TTL=3Dn should all reach the nexthop on same incoming LAG member link Y at TTL=3Dn+1. Well, you are already providing good set of comments, much appreciate it! Thanks! -Nobo From nobody Wed Jul 9 21:58:00 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C42F31A049F for ; Wed, 9 Jul 2014 21:57:54 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.099 X-Spam-Level: X-Spam-Status: No, score=-1.099 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, J_CHICKENPOX_81=0.6, MIME_8BIT_HEADER=0.3, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6jbfQQkAqnjX for ; Wed, 9 Jul 2014 21:57:53 -0700 (PDT) Received: from mail-qg0-x22e.google.com (mail-qg0-x22e.google.com [IPv6:2607:f8b0:400d:c04::22e]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 1C82E1A00F0 for ; Wed, 9 Jul 2014 21:57:53 -0700 (PDT) Received: by mail-qg0-f46.google.com with SMTP id q107so6756618qgd.19 for ; Wed, 09 Jul 2014 21:57:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=k3qfny0Mj+bHRDxd+ZaDoptNWLoab7Q06YEQVQOpRk4=; b=WvDb+XEqzZc4u8MbSbM0MHqvWXSBYqaU5o71ZkObsvykyEDmp3wfUkSs4GSPoBuuwB AJj8Rwg9z1mYV/DM3CjEt/ywmBgY/bhe94M+hEtsYxjXen/DxCRlsWjW6bbwkjygUzzH pkTIdqAHn1X1q6muyP/9aqN0HVdTa/TIFlDb+gORuMrHEDRDqvOkNjpk+XLzYmVoYhL/ TCZdjDvpwg+Iwmot5dVTBCkxtJR34yLbXw/WXwuLQPzGhU40Ub+jp1isPQW7h8/6GVeL KEstesAXPvBPc4ZZ8hvU891r05gu5CIfedukFqA21QpEaQSET3+d4m/QAof8JkRmSEwD xHvA== MIME-Version: 1.0 X-Received: by 10.140.88.103 with SMTP id s94mr31618473qgd.73.1404968272206; Wed, 09 Jul 2014 21:57:52 -0700 (PDT) Received: by 10.224.93.10 with HTTP; Wed, 9 Jul 2014 21:57:52 -0700 (PDT) In-Reply-To: <76CD132C3ADEF848BD84D028D243C927336BE7CD@nkgeml512-mbx.china.huawei.com> References: <76CD132C3ADEF848BD84D028D243C927336BE7CD@nkgeml512-mbx.china.huawei.com> Date: Thu, 10 Jul 2014 12:57:52 +0800 Message-ID: From: weiqiang cheng To: "Dongjie (Jimmy)" Content-Type: multipart/alternative; boundary=001a11c11e1cc9205804fdcfaae4 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/1avOvqQHRbNBHijLQgI1m_Qk09A Cc: "mpls@ietf.org" , "draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org" Subject: Re: [mpls] =?utf-8?q?=5BMPLS=5D_Any_comments_on_the_draft_of_MPLS-TP_?= =?utf-8?q?Shared-Ring_protection_=28MSRP=29_mechanism_for_ring_topology?= =?utf-8?b?4oCdID8=?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Jul 2014 04:57:55 -0000 --001a11c11e1cc9205804fdcfaae4 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Jie, Thanks for your comments. MPLS-TP based networks are usually constructed with multiple-ring topology.In some failure scenarios, linear protection such as PSC cannot cover the multi-failure issue.In addition,for many application scenarios such as mobile backhaul,a large number of services should be terminated in one core node.Because the linear protection should be executed end to end,the core node will take heavy load to handle OAM messages and Protection switching. SMP is a very good solution to share the resources and improve the network reliability. My understanding is that shared ring protection is a special case of SMP for ring specifically. It is more easy to implement and able to reduce the complexity of protection configuration and operation in ring topology. B.R. Weiqiang Cheng 2014-07-09 19:10 GMT+08:00 Dongjie (Jimmy) : > Dear authors, > > > > I have one quick comment on this draft: > > > > Since we have Linear Protection (PSC) and the work being done on Shared > Mesh Protection, do we need dedicated protection solution for ring topolo= gy? > > > > Best regards, > > Jie > > > > *From:* mpls [mailto:mpls-bounces@ietf.org] *On Behalf Of *weiqiang cheng > *Sent:* Wednesday, July 09, 2014 6:41 PM > *To:* mpls@ietf.org > *Cc:* draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org > *Subject:* [mpls] [MPLS] Any comments on the draft of MPLS-TP Shared-Ring > protection (MSRP) mechanism for ring topology=E2=80=9D ? > > > > Hi There, > > We uploaded the new version draft =E2=80=9CMPLS-TP Shared-Ring protection= (MSRP) mechanism for ring topology=E2=80=9D > > https://datatracker.ietf.org/doc/draft-cheng-mpls-tp-shared-ring-protecti= on/ > > We authors would like to see comments on this draft. Please help to revie= w it and It would be highly appreciated to send your comments on the mailin= g list. > > > > Thanks, > > Weiqiang Cheng > > --001a11c11e1cc9205804fdcfaae4 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi Jie,
Th= anks for your comments.

MPLS-T= P based networks are usually constructed with multiple-ring topology.In som= e failure scenarios, linear protection such as PSC cannot cover the multi-f= ailure issue.In addition,for many application scenarios such as mobile back= haul,a large number of services should be terminated in one core node.Becau= se the linear protection should be executed end to end,the core node will t= ake heavy load to handle OAM messages and Protection switching. =C2=A0

SMP is a very good sol= ution to share the resources and improve the network reliability. My unders= tanding is that shared ring protection is a special case of SMP for ring sp= ecifically. It is more easy to implement and able to reduce
the complexity o= f protection configuration and operation in ring topology. =C2=A0=C2=A0

B.R.
Weiqia= ng Cheng


2014-07-09 19:10 GMT+08:00 Dongjie (Jimmy) <jie.dong@huawei.com>:

Dear autho= rs,

=C2= =A0

I have one= quick comment on this draft:

=C2= =A0

Since we h= ave Linear Protection (PSC) and the work being done on Shared Mesh Protecti= on, do we need dedicated protection solution for ring topology?

=C2= =A0

Best regar= ds,

Jie=

=C2= =A0

From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of weiqiang cheng
Sent: Wednesday, July 09, 2014 6:41 PM
To: mpls@ietf.org=
Cc: draft-cheng-mpls-tp-shared-ring-protection@t= ools.ietf.org
Subject: [mpls] [MPLS] Any comments on the draft of MPLS-TP Shared-R= ing protection (MSRP) mechanism for ring topology=E2=80=9D ?<= /span>

=C2=A0

Hi There,
We uploaded the new version draft =E2=80=9CMPLS-T=
P Shared-Ring protection (MSRP) mechanism for ring topology=E2=80=9D=

https://datatrack=
er.ietf.org/doc/draft-cheng-mpls-tp-shared-ring-protection/
We authors would like to see comments on this dra=
ft. Please help to review it and It would be highly appreciated to send you=
r comments on the mailing list.
=C2=A0
Thanks,
Weiqiang Cheng

--001a11c11e1cc9205804fdcfaae4-- From nobody Wed Jul 9 22:47:14 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 37EFC1B2797 for ; Wed, 9 Jul 2014 22:47:13 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.4 X-Spam-Level: X-Spam-Status: No, score=-1.4 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, J_CHICKENPOX_31=0.6, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id bWjxLrRrYsfe for ; Wed, 9 Jul 2014 22:47:12 -0700 (PDT) Received: from mail-pd0-x234.google.com (mail-pd0-x234.google.com [IPv6:2607:f8b0:400e:c02::234]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 5FCE31B2795 for ; Wed, 9 Jul 2014 22:47:12 -0700 (PDT) Received: by mail-pd0-f180.google.com with SMTP id fp1so10254495pdb.11 for ; Wed, 09 Jul 2014 22:47:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=content-type:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=UX0uI6Ey1nTd1jzV7IiTW+V0xL1vCsT0S4DWE3CKfjc=; b=hW69aOjrTLF45YpI4F+5PWiRe2tTKCBO7j9A9GBRbw5lXtWuxtFgB3RtGIoJ/UEILu ig+qiKP+EyMLzf1JfCgqUPV+JAjEMzziDdlUVO4gGkardo5cn1MpepThpPkbzXgfm0ka 7+3wQiC8HyQxPfAL/DxzDUHuYUvsLpXXjxbciu+WVQzsGsfsHyc+Akhn1GDJxaqahoVX xh7R/qh5pw4yHoB4N5wuU0AwLgCjfcfrIrvi0LD490ia3OkYmEya/Z+L8Du262642LyT MosrrD2RVnzZw+BL7JwzAWHqC8fKJOo2/CJF8G/rVLTykMiYAuibqfEaybA8Pd8AMiUT q3GA== X-Received: by 10.66.136.131 with SMTP id qa3mr44623135pab.77.1404971232113; Wed, 09 Jul 2014 22:47:12 -0700 (PDT) Received: from [192.168.1.8] (c-107-3-154-60.hsd1.ca.comcast.net. [107.3.154.60]) by mx.google.com with ESMTPSA id op6sm30912773pdb.71.2014.07.09.22.47.11 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 09 Jul 2014 22:47:11 -0700 (PDT) Content-Type: text/plain; charset=windows-1252 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) From: Sam Aldrin In-Reply-To: Date: Wed, 9 Jul 2014 22:47:09 -0700 Content-Transfer-Encoding: quoted-printable Message-Id: References: <20140613210400.13388.18750.idtracker@ietfa.amsl.com> <10150BDE-17FD-43D0-9DE4-6E0CAAF3BD5E@gmail.com> To: "Nobo Akiya (nobo)" X-Mailer: Apple Mail (2.1878.6) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/cy5b6dt6m8hqseDSKI2dka-44JY Cc: "mpls@ietf.org" Subject: Re: [mpls] New Version Notification for draft-akiya-mpls-lsp-ping-lag-multipath-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Jul 2014 05:47:13 -0000 Hi Nobo, Thanks for the responses. Snipped out things so as not to bloat the discussion.=20 I could review draft when you add those changes. For now, have some points which I feel are more imp :D Hope you don=92t = mind. >=20 >> =46rom high level, this addition will help discover various LAG = members >> associated with the data path of an LSP. But I think it is difficult = to validate >> against a given FEC. Because the DDMAP info of LAG member sent cannot = be >> validated. If it is indeed could be validated, should be documented = in the ID. >=20 > Good point. I think Section 4 (Mechanism to Validate L2 ECMP = Traversal) can use more texts to describe the what can be validated. How = about we make some changes in the Section 4 (Mechanism to Validate L2 = ECMP Traversal). >=20 > [old] > Described procedures allow initiating LSR to know: >=20 > o The expected load balance information of every LAG member link, = at > LSR with TTL=3Dn. >=20 > o The actual incoming interface at LSR with TTL=3Dn+1, including = the > interface index of LAG member link if incoming interface is a LAG > interface. >=20 > [new] > Described procedures allow initiating LSR to know: >=20 > o The expected load balance information of every LAG member link, = at > LSR with TTL=3Dn. >=20 > o With specific entropy, the expected interface index of the > outgoing LAG member link at TTL=3Dn. >=20 > o With specific entropy, the interface index of the incoming LAG > member link at TTL=3Dn+1. >=20 > Expectation is that there's a relationship between the interface > index of the outgoing LAG member link at TTL=3Dn and the interface > index of the incoming LAG member link at TTL=3Dn+1 for all = discovered > entropies. In other words, set of entropies that load balances to > outgoing LAG member link X at TTL=3Dn should all reach the nexthop = on > same incoming LAG member link Y at TTL=3Dn+1. I think this is very important, for the reasons below. 1. How does one know same LAG bundle originates at TTL=3Dn terminates at = TTL=3Dn+1. I am talking from discovery/treetrace/someother side? Both = TTL=3Dn and TTL=3Dn+1 could tell it is LAG but doesn=92t mean that is = 1:1 correspondence per link/link member. IOW, how does sec #3 be performed for the scenario described in last = paragraph in sec #4? Better yet, how does one know not to perform if = any? 2. Let us take this scenario, I receive DDMAP at TTL=3Dn with various = LAG interface+members and their multipath info. I send TTL=3Dn+1 with a = chosen LAG interface and multi path info. At TTL=3Dn+1, what am I going = to validate? For the FEC validation and interface validation, I need to = check for specific information, in this case the LAG member. My = understanding is, unlike load balanced interfaces, if LAG member is not = pinned to specific LSP, the even if one member link fails, it load = balances over other member link, because MPLS will only see it as single = interface from LIB point of view, no? 3. If the LAG member info be only used to indicate that there is LAG but = NOT for validation, then text should be added to describe that. = Especially on how FEC interface and label validation is done.=20 4. As you said, if a LAG member is pinned to a specific LSP, then we = will be using a separate DSMAP/DDMAP anyway. If so, could explain the = benefit of LAG with multi path info really used for? In other words, how = much beneficial compared to BFD over LAG? 5. When do you consider a LAG member has failed and how do you indicate = or inform the requestor? Will save more questions for later :D -sam > Well, you are already providing good set of comments, much appreciate = it! >=20 > Thanks! >=20 > -Nobo >=20 From nobody Wed Jul 9 23:55:18 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3899B1A035C; Wed, 9 Jul 2014 23:55:14 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -102.252 X-Spam-Level: X-Spam-Status: No, score=-102.252 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, MIME_8BIT_HEADER=0.3, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id meox6gttRAD5; Wed, 9 Jul 2014 23:55:11 -0700 (PDT) Received: from smtpeg.etri.re.kr (smtpeg1.etri.re.kr [129.254.27.141]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 6E4EA1A0359; Wed, 9 Jul 2014 23:55:10 -0700 (PDT) Received: from SMTP4.etri.info (129.254.28.74) by SMTPEG1.etri.info (129.254.27.141) with Microsoft SMTP Server (TLS) id 14.1.355.2; Thu, 10 Jul 2014 15:55:07 +0900 Received: from SMTP2.etri.info ([169.254.2.160]) by SMTP4.etri.info ([10.2.6.33]) with mapi id 14.01.0355.002; Thu, 10 Jul 2014 15:55:04 +0900 From: =?utf-8?B?66WY7KCV64+Z?= To: Lou Berger , "rtg-ads@tools.ietf.org" Thread-Topic: [RTG-DIR] [mpls] RtgDir review: draft-ietf-mpls-smp-requirements-06.txt Thread-Index: AQHPjWn3yaQ2bqHMa0u/oexBdb3lpJuPKTU+gAHv9wCAB+MbNg== Date: Thu, 10 Jul 2014 06:55:03 +0000 Message-ID: <5B4A6CBE3924BB41A3BEE462A8E0B75A28749702@SMTP2.etri.info> References: <53A5ABED.9080408@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28748144@SMTP2.etri.info>, <53B8190E.6080505@labn.net> In-Reply-To: <53B8190E.6080505@labn.net> Accept-Language: ko-KR, en-US Content-Language: ko-KR 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(ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id EBF671B27A9; Thu, 10 Jul 2014 00:52:12 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -95.402 X-Spam-Level: X-Spam-Status: No, score=-95.402 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, CHARSET_FARAWAY_HEADER=3.2, J_CHICKENPOX_72=0.6, J_CHICKENPOX_91=0.6, MIME_8BIT_HEADER=0.3, MIME_CHARSET_FARAWAY=2.45, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id jtBhzXMiPrNX; Thu, 10 Jul 2014 00:52:10 -0700 (PDT) Received: from smtpeg.etri.re.kr (smtpeg1.etri.re.kr [129.254.27.141]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 1E5641B27A8; Thu, 10 Jul 2014 00:52:09 -0700 (PDT) Received: from SMTP4.etri.info (129.254.28.74) by SMTPEG1.etri.info 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http://mailarchive.ietf.org/arch/msg/mpls/XYtyNTSXK4D9YUKB_IlJqg7th9g Cc: "mpls@ietf.org" , "draft-ietf-mpls-smp-requirements.all@tools.ietf.org" , "rtg-dir@ietf.org" , "rtg-ads@tools.ietf.org" Subject: [mpls] =?euc-kr?b?yLi9xTogW1JURy1ESVJdICBSdGdEaXIgcmV2aWV3OiBk?= =?euc-kr?q?raft-ietf-mpls-smp-requirements-06=2Etxt?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Jul 2014 07:52:13 -0000 TG91IGFuZCBZYWFjb3YsDQoNCkhlcmUgaXMgbXkgc3VnZ2VzdGlvbiBvbiB0aG9zZSB0d28gYnVs bGV0IGl0ZW0gdGV4dHMgcmVsYXRlZCB0byAiYXNzaWduZWQiLg0KDQpBcyBpbiBteSBlYXJsaWVy IGVtYWlsIHRvIExvdSdzIGZvbGxvd3VwIGNvbW1lbnRzLCANCndlIGNhbiBtYWtlIHR3byBzdWIg c2VjdGlvbnMgdW5kZXIgdGhpcyBTZWN0aW9uIDUuMi4gDQphbmQgdGl0bGUgdGhlbSBhcyAiNS4y LjEgU29mdCBwcmVlbXB0aW9uIiBhbmQgIjUuMi4yIEhhcmQgcHJlZW1wdGlvbiIuIA0KVGhvc2Ug 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Cj4NCj4gICAgIF9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f DQo+ICAgICBtcGxzIG1haWxpbmcgbGlzdA0KPiAgICAgbXBsc0BpZXRmLm9yZyA8bWFpbHRvOm1w bHNAaWV0Zi5vcmc+DQo+ICAgICBodHRwczovL3d3dy5pZXRmLm9yZy9tYWlsbWFuL2xpc3RpbmZv L21wbHMNCj4NCg0K From nobody Thu Jul 10 04:55:48 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C9AA11B2888; Thu, 10 Jul 2014 04:55:46 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 2.488 X-Spam-Level: ** X-Spam-Status: No, score=2.488 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, FH_RELAY_NODNS=1.451, HELO_EQ_BIZ=0.288, HELO_MISMATCH_BIZ=0.443, IP_NOT_FRIENDLY=0.334, MIME_8BIT_HEADER=0.3, RDNS_NONE=0.793, SPF_NEUTRAL=0.779] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id R6tCXQP3UoOP; Thu, 10 Jul 2014 04:55:44 -0700 (PDT) Received: from newdragon.webhostserver.biz (unknown [69.25.137.16]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 97B2D1A03F6; Thu, 10 Jul 2014 04:55:44 -0700 (PDT) Received: from localhost ([::1]:34147 helo=[127.0.0.1]) by newdragon.webhostserver.biz with esmtpsa (TLSv1:DHE-RSA-AES128-SHA:128) (Exim 4.82) (envelope-from ) id 1X5Cwv-0005kd-5Q; Thu, 10 Jul 2014 15:55:41 +0400 Message-ID: <53BE7F3B.9010005@labn.net> Date: Thu, 10 Jul 2014 07:55:39 -0400 From: Lou Berger User-Agent: Mozilla/5.0 (X11; Linux i686; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: =?UTF-8?B?66WY7KCV64+Z?= References: <53A5ABED.9080408@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28748144@SMTP2.etri.info>, <53B8190E.6080505@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28749702@SMTP2.etri.info> In-Reply-To: <5B4A6CBE3924BB41A3BEE462A8E0B75A28749702@SMTP2.etri.info> Content-Type: 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List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Jul 2014 11:55:47 -0000 Jeong-dong, Thank you for the response, see below. On 7/10/2014 2:55 AM, ë¥˜ì •ë™ wrote: > > Thank you, Lou > > Please, see the lines starting with [JR] for my responses to your comments. > > I removed the parts that we have already agreed on. I also erased your comments that are minor editorial and will be reflected in the next version as you suggested. The two “assigned†related comments are not covered here as they are being discussed with Yaacov. > > Best regards, > > Jeong-dong > > ****** > > (4) Page 7, the first paragraph: > OLD: > the resources for the protection path are fully committed, > NEW > the resources for the protection path are fully dedicated, > > Dedicated is also an ambiguous term, how about: > OLD > the resources for the protection path are fully committed, the > protection path in the case of SMP consists of segments that are > dedicated to the protection of the related working path and also > NEW > the resources for the protection path are fully allocated, the > protection path in the case of SMP consists of segments that are > allocated to the protection of the related working path and also > > [JR] This paragraph describes the difference between linear protection and shared mesh protection from the perspective of protection resource sharing. In linear protection switching, the resources are not shared but dedicated to the protection path. SMP has shared resources in some segments. I think the word, “dedicated†is general enough to be used without any further definition. RFC 6372 also uses “dedicated“, and this document follows the same use as in RFC 6372 I think the (new) first usage of dedicated in paragraph is fine, it's the second I have a real issue with. I suggested changing both to avoid the term altogether. The way "dedicated" is used in the second sentence is in the context of SMP, while RFC6372 uses "dedicated" the context of "Dedicated Protection" which is contrasted with "Shared Protection". How about: NEW the resources for the protection path are fully dedicated, the protection path in the case of SMP consists of segments that are used for protection of the related working path and also > > > (7) The second paragraph of Section 4.1: > OLD: > When the reserved resources of the shared segments are committed to a > particular protection path, there may not be sufficient resources > available for an additional protection path. This then implies that > if another working path of the SMP domain triggers a protection > switch, the commitment of the resources may fail. In order to > optimize the operation of the commitment and preparing for cases of > multiple working paths failing, the commitment of the shared > resources are be coordinated between the different working paths in > the SMP network. > NEW: > When the reserved resources of the shared segments are utilized by a > particular protection path, there may not be sufficient resources > available for an additional protection path. This then implies that > if another working path of the SMP domain triggers a protection > switch, the resource utilization coordination may fail. The different working paths in > the SMP network are involved in the resource utilization coordination. > > > This is fine, but I wonder why you are using "resource utilization" vs "protection switch"? (this is actually a bit of a general comment -- I the latter is an existing applicable term that would help readers how this document fits in to the technology space.) > > [JR] As described in an earlier part of this section, SMP protection consists of two operations: traffic switchover and resource utilization coordination. The sentences are about the resource utilization coordination, and “resource utilization†seems to be more accurate. Is "resource utilization coordination" done via some form of inter-node coordination? If yes, then I think my comment holds. If no, then I think you should elabotate on how the "coordination" in this case differes from how you use "coordination" elsewhere in the document. Either way, I think we've discussed this enough, i.e., I won't push this point further. > > > - General comment: fate-sharing for co-routed bidirectional LSP > protection: How is co-routing preserved for the reverse path in SMP? > I'd assumed the protection switch coordination protocol would be > required to trigger a switchover of the reverse LSP in the co-routed > case, but don't see this in the document. > [Authors] Fate-sharing is not required by this document. Even in the PSC linear protection switching, such as RFC 6378 (PSC) and RFC 7271 (PSC in APS mode), fate-sharing is not required as unidirectional switching is allowed. This document does not impose any restriction on co-routing, either. > > > Both RFC4427 and 6372 mention this (Bi-directional recovery switching in the former). I think this document really needs to mention something on the topic. Given the 6372 a "MAY" level requirement is probably sufficient, but this should be confirmed with the WG. (I personally would like SHOULD as this seems to better match 6372's text "operator often requires...".) > > [JR] O.K. I guess that mandating bidirectional switching does not mean that unidirectional switching is prohibited. What we can do is that, after changing the title of Section 5.4. from “Revertive protection switching†to “Reversion and Fate-sharingâ€, one paragraph with the following sentence will be added: “Bidirectional protection switching SHOULD be supported in SMP.†The topics are essentially orthognal, i.e., supporting one without the other is completly reasonable. If you don't want to add a dedicated section, then Sections 5.7, 5.3 and perhaps even 5.5 are better choices. > > > - In section 4 and 5.2 you reference 5712 and 3209 as defining > preemption terminology and behavior. I think 6372 is the right > reference here as it defines both in the context of survivability and > in dependent of control plane. > [Authors] One concern is that RFC 6372 describes both soft and hard preemptions in the context of extra traffic, which is not exactly the case for SMP. > > Then 6372 should be referenced and the difference should be described. Otherwise readers are likely to think you just used the wrong reference and that 6372's text applies. 6372 is after all titled "MPLS-TP Survivability Framework"... > > [JR] O.K. 6372 will be referenced and we can add the following sentence as the third sentence in the paragraph: “The traffic of lower priority paths in this document can be viewed as the extra traffic being preempted in [RFC6372].†great. > > > - Section 4.1. You say "two operations simultaneously". Do you really > mean "simultaneously" or merely that they must both occur for > protection to be provided? (Same comment in section 5.1. > [Authors] Both actions should occur at the same time, or as closely as possible to provide fast protection. > > What text change is planned? > > [JR] We can erase “simultaneously†and add the sentence (“Both operations should occur at the same time, or as closely as possible to provide fast protection.â€) as the second sentence of the paragraph. WFM. > > > > - Section 5.2: First paragraph and forth bullet last sentence. These > both basically cover the same topic (preemption) and actually say > slightly different things. I suggest combine into a single > requirement to ensure consistency and full coverage of the topic. > [Authors] The first paragraph is for soft-preemption, while the fourth bullet belongs to the requirements of hard-preemption. > > Do you plan a text change? (the 1st paragraph should be a list item and soft-preemption is mentioned as a parenthetical , and the forth doesn't mention its scope as hard preemption.) > > [JR] OK. We can make them clear. How about the following arrangement? > > 5.2. Multiple triggers > > If more than one working path is triggering a protection switch such > that a protection segment is oversubscribed, there are two different > actions that the SMP network can choose – soft preemption and hard > preemption. > > 5.2.1. Soft-preemption > > For networks that support multiplexing packets over the shared segments, the requirement is: > > O All of the protection paths MAY be allowed to share the resources > of the shared segments > > 5.2.2 Hard-preemption > > There are networks that require the exclusive use of the protection > resources when a protection segment is oversubscribed. > Traffic of lower priority paths is completely blocked. > These include networks that support the requirements in [RFC5654], > and in particular support requirement 58. For such networks, > the following requirements apply: > > O ... > > O ... > I think this will work. Thanks, Lou ... From nobody Thu Jul 10 05:10:08 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D75B91A0407 for ; Thu, 10 Jul 2014 05:10:06 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.701 X-Spam-Level: X-Spam-Status: No, score=-1.701 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, MIME_8BIT_HEADER=0.3, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Z1Fgy56LawGV for ; Thu, 10 Jul 2014 05:10:05 -0700 (PDT) Received: from gproxy7-pub.mail.unifiedlayer.com (gproxy7-pub.mail.unifiedlayer.com [70.40.196.235]) by ietfa.amsl.com (Postfix) with SMTP id 6C2381A037F for ; Thu, 10 Jul 2014 05:10:05 -0700 (PDT) Received: (qmail 30856 invoked by uid 0); 10 Jul 2014 12:10:02 -0000 Received: from unknown (HELO cmgw3) (10.0.90.84) by gproxy7.mail.unifiedlayer.com with SMTP; 10 Jul 2014 12:10:02 -0000 Received: from box313.bluehost.com ([69.89.31.113]) by cmgw3 with id Qi9j1o00R2SSUrH01i9mc2; Thu, 10 Jul 2014 12:10:00 -0600 X-Authority-Analysis: v=2.1 cv=fudPOjIf c=1 sm=1 tr=0 a=h1BC+oY+fLhyFmnTBx92Jg==:117 a=ZSdzdHkL1-cA:10 a=-ANFxW_a3iwA:10 a=HFCU6gKsb0MA:10 a=jPJDawAOAc8A:10 a=IkcTkHD0fZMA:10 a=wU2YTnxGAAAA:8 a=cNaOj0WVAAAA:8 a=-NfooI8aBGcA:10 a=uEJ9t1CZtbIA:10 a=qfHHtKHh6Xq5kuXZ0osA:9 a=QEXdDO2ut3YA:10 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=labn.net; s=default; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:References:Subject:CC:To:MIME-Version:From:Date:Message-ID; bh=cDA9wQrF4DmXfdB8lmw4lXnuWKKV0Y1MAcVk3mc5TGU=; b=hkhlwa3ggFuDuQL+sQUlOzyx+7dls1UeJ6lRFFRh1CI5DilZnvsEKwmO+ows1fiKciJCsUrigYefAvm8vb6JLaEv22KFzt6vVltksk0R8tVaPAMD4AB7XHaprI7pWF3I; Received: from box313.bluehost.com ([69.89.31.113]:54573 helo=[127.0.0.1]) by box313.bluehost.com with esmtpa (Exim 4.82) (envelope-from ) id 1X5DAW-0003p5-RO; Thu, 10 Jul 2014 06:09:45 -0600 Message-ID: <53BE8285.6000106@labn.net> Date: Thu, 10 Jul 2014 08:09:41 -0400 From: Lou Berger User-Agent: Mozilla/5.0 (X11; Linux i686; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: =?UTF-8?B?66WY7KCV64+Z?= References: <53A5ABED.9080408@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28748144@SMTP2.etri.info>, <53B8190E.6080505@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28749702@SMTP2.etri.info> In-Reply-To: <5B4A6CBE3924BB41A3BEE462A8E0B75A28749702@SMTP2.etri.info> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Identified-User: {1038:box313.bluehost.com:labnmobi:labn.net} {sentby:smtp auth 69.89.31.113 authed with lberger@labn.net} Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/RhxAlbEH7GB03oz51PMIja0Uo-c Cc: "rtg-dir@ietf.org" , "mpls@ietf.org" , "draft-ietf-mpls-smp-requirements.all@tools.ietf.org" , "rtg-ads@tools.ietf.org" Subject: Re: [mpls] =?utf-8?b?7ZqM7IugOiBbUlRHLURJUl0gIFJ0Z0RpciByZXZpZXc6IGRy?= =?utf-8?q?aft-ietf-mpls-smp-requirements-06=2Etxt_=28resend=29?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Jul 2014 12:10:07 -0000 [Got some odd bounces on my 1st attempt to send this...] Jeong-dong, Thank you for the response, see below. On 7/10/2014 2:55 AM, 류ì •ë™ wrote: > > Thank you, Lou > > Please, see the lines starting with [JR] for my responses to your comments. > > I removed the parts that we have already agreed on. I also erased your comments that are minor editorial and will be reflected in the next version as you suggested. The two “assigned†related comments are not covered here as they are being discussed with Yaacov. > > Best regards, > > Jeong-dong > > ****** > > (4) Page 7, the first paragraph: > OLD: > the resources for the protection path are fully committed, > NEW > the resources for the protection path are fully dedicated, > > Dedicated is also an ambiguous term, how about: > OLD > the resources for the protection path are fully committed, the > protection path in the case of SMP consists of segments that are > dedicated to the protection of the related working path and also > NEW > the resources for the protection path are fully allocated, the > protection path in the case of SMP consists of segments that are > allocated to the protection of the related working path and also > > [JR] This paragraph describes the difference between linear protection and shared mesh protection from the perspective of protection resource sharing. In linear protection switching, the resources are not shared but dedicated to the protection path. SMP has shared resources in some segments. I think the word, “dedicated†is general enough to be used without any further definition. RFC 6372 also uses “dedicated“, and this document follows the same use as in RFC 6372 I think the (new) first usage of dedicated in paragraph is fine, it's the second I have a real issue with. I suggested changing both to avoid the term altogether. The way "dedicated" is used in the second sentence is in the context of SMP, while RFC6372 uses "dedicated" the context of "Dedicated Protection" which is contrasted with "Shared Protection". How about: NEW the resources for the protection path are fully dedicated, the protection path in the case of SMP consists of segments that are used for protection of the related working path and also > > > (7) The second paragraph of Section 4.1: > OLD: > When the reserved resources of the shared segments are committed to a > particular protection path, there may not be sufficient resources > available for an additional protection path. This then implies that > if another working path of the SMP domain triggers a protection > switch, the commitment of the resources may fail. In order to > optimize the operation of the commitment and preparing for cases of > multiple working paths failing, the commitment of the shared > resources are be coordinated between the different working paths in > the SMP network. > NEW: > When the reserved resources of the shared segments are utilized by a > particular protection path, there may not be sufficient resources > available for an additional protection path. This then implies that > if another working path of the SMP domain triggers a protection > switch, the resource utilization coordination may fail. The different working paths in > the SMP network are involved in the resource utilization coordination. > > > This is fine, but I wonder why you are using "resource utilization" vs "protection switch"? (this is actually a bit of a general comment -- I the latter is an existing applicable term that would help readers how this document fits in to the technology space.) > > [JR] As described in an earlier part of this section, SMP protection consists of two operations: traffic switchover and resource utilization coordination. The sentences are about the resource utilization coordination, and “resource utilization†seems to be more accurate. Is "resource utilization coordination" done via some form of inter-node coordination? If yes, then I think my comment holds. If no, then I think you should elabotate on how the "coordination" in this case differes from how you use "coordination" elsewhere in the document. Either way, I think we've discussed this enough, i.e., I won't push this point further. > > > - General comment: fate-sharing for co-routed bidirectional LSP > protection: How is co-routing preserved for the reverse path in SMP? > I'd assumed the protection switch coordination protocol would be > required to trigger a switchover of the reverse LSP in the co-routed > case, but don't see this in the document. > [Authors] Fate-sharing is not required by this document. Even in the PSC linear protection switching, such as RFC 6378 (PSC) and RFC 7271 (PSC in APS mode), fate-sharing is not required as unidirectional switching is allowed. This document does not impose any restriction on co-routing, either. > > > Both RFC4427 and 6372 mention this (Bi-directional recovery switching in the former). I think this document really needs to mention something on the topic. Given the 6372 a "MAY" level requirement is probably sufficient, but this should be confirmed with the WG. (I personally would like SHOULD as this seems to better match 6372's text "operator often requires...".) > > [JR] O.K. I guess that mandating bidirectional switching does not mean that unidirectional switching is prohibited. What we can do is that, after changing the title of Section 5.4. from “Revertive protection switching†to “Reversion and Fate-sharingâ€Â, one paragraph with the following sentence will be added: “Bidirectional protection switching SHOULD be supported in SMP.†The topics are essentially orthognal, i.e., supporting one without the other is completly reasonable. If you don't want to add a dedicated section, then Sections 5.7, 5.3 and perhaps even 5.5 are better choices. > > > - In section 4 and 5.2 you reference 5712 and 3209 as defining > preemption terminology and behavior. I think 6372 is the right > reference here as it defines both in the context of survivability and > in dependent of control plane. > [Authors] One concern is that RFC 6372 describes both soft and hard preemptions in the context of extra traffic, which is not exactly the case for SMP. > > Then 6372 should be referenced and the difference should be described. Otherwise readers are likely to think you just used the wrong reference and that 6372's text applies. 6372 is after all titled "MPLS-TP Survivability Framework"... > > [JR] O.K. 6372 will be referenced and we can add the following sentence as the third sentence in the paragraph: “The traffic of lower priority paths in this document can be viewed as the extra traffic being preempted in [RFC6372].†great. > > > - Section 4.1. You say "two operations simultaneously". Do you really > mean "simultaneously" or merely that they must both occur for > protection to be provided? (Same comment in section 5.1. > [Authors] Both actions should occur at the same time, or as closely as possible to provide fast protection. > > What text change is planned? > > [JR] We can erase “simultaneously†and add the sentence (“Both operations should occur at the same time, or as closely as possible to provide fast protection.â€Â) as the second sentence of the paragraph. WFM. > > > > - Section 5.2: First paragraph and forth bullet last sentence. These > both basically cover the same topic (preemption) and actually say > slightly different things. I suggest combine into a single > requirement to ensure consistency and full coverage of the topic. > [Authors] The first paragraph is for soft-preemption, while the fourth bullet belongs to the requirements of hard-preemption. > > Do you plan a text change? (the 1st paragraph should be a list item and soft-preemption is mentioned as a parenthetical , and the forth doesn't mention its scope as hard preemption.) > > [JR] OK. We can make them clear. How about the following arrangement? > > 5.2. Multiple triggers > > If more than one working path is triggering a protection switch such > that a protection segment is oversubscribed, there are two different > actions that the SMP network can choose – soft preemption and hard > preemption. > > 5.2.1. Soft-preemption > > For networks that support multiplexing packets over the shared segments, the requirement is: > > O All of the protection paths MAY be allowed to share the resources > of the shared segments > > 5.2.2 Hard-preemption > > There are networks that require the exclusive use of the protection > resources when a protection segment is oversubscribed. > Traffic of lower priority paths is completely blocked. > These include networks that support the requirements in [RFC5654], > and in particular support requirement 58. For such networks, > the following requirements apply: > > O ... > > O ... > I think this will work. Thanks, Lou ... From nobody Thu Jul 10 05:30:50 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 92B191B28AC for ; Thu, 10 Jul 2014 05:30:48 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.651 X-Spam-Level: X-Spam-Status: No, score=-1.651 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, J_CHICKENPOX_81=0.6, MIME_8BIT_HEADER=0.3, RP_MATCHES_RCVD=-0.651] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id AEgYDuaM692D for ; Thu, 10 Jul 2014 05:30:46 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 057AE1B28AB for ; Thu, 10 Jul 2014 05:30:46 -0700 (PDT) Received: from [192.168.0.106] (81-229-83-119-no65.business.telia.com [81.229.83.119]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 5DC431801586; Thu, 10 Jul 2014 14:30:43 +0200 (CEST) Message-ID: <53BE8775.6030606@pi.nu> Date: Thu, 10 Jul 2014 14:30:45 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: weiqiang cheng , "Dongjie (Jimmy)" References: <76CD132C3ADEF848BD84D028D243C927336BE7CD@nkgeml512-mbx.china.huawei.com> In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/t6ypq20lQQYN8YypkiZOLt81Eck Cc: "mpls@ietf.org" , "draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org" Subject: Re: [mpls] =?windows-1252?q?=5BMPLS=5D_Any_comments_on_the_draft_of_M?= =?windows-1252?q?PLS-TP_Shared-Ring_protection_=28MSRP=29_mechanism_for_r?= =?windows-1252?q?ing_topology=94_=3F?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Jul 2014 12:30:48 -0000 Weiqiang Cheng, Authors, Sections 5.2. and 5.2.6.1 of RFC 5654 discusses protection in specific topologies in general and in ring topologies. There quite a number of specific requirements, but I think that a very high-level summary would be: "In the case it is beneficial in the operational situation to have a solution for a specific topology and that solution does not create drawbacks for the general MPLS protection mechanisms, such a solution may be specified and deployed." /Loa On 2014-07-10 06:57, weiqiang cheng wrote: > Hi Jie, > Thanks for your comments. > > MPLS-TP based networks are usually constructed with multiple-ring > topology.In some failure scenarios, linear protection such as PSC cannot > cover the multi-failure issue.In addition,for many application scenarios > such as mobile backhaul,a large number of services should be terminated > in one core node.Because the linear protection should be executed end to > end,the core node will take heavy load to handle OAM messages and > Protection switching. > > SMP is a very good solution to share the resources and improve the > network reliability. My understanding is that shared ring protection is > a special case of SMP for ring specifically. It is more easy to > implement and able to reduce > the complexity of protection configuration and operation in ring topology. > > B.R. > Weiqiang Cheng > > > 2014-07-09 19:10 GMT+08:00 Dongjie (Jimmy) >: > > Dear authors, ____ > > __ __ > > I have one quick comment on this draft: ____ > > __ __ > > Since we have Linear Protection (PSC) and the work being done on > Shared Mesh Protection, do we need dedicated protection solution for > ring topology?____ > > __ __ > > Best regards,____ > > Jie____ > > __ __ > > *From:*mpls [mailto:mpls-bounces@ietf.org > ] *On Behalf Of *weiqiang cheng > *Sent:* Wednesday, July 09, 2014 6:41 PM > *To:* mpls@ietf.org > *Cc:* draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org > > *Subject:* [mpls] [MPLS] Any comments on the draft of MPLS-TP > Shared-Ring protection (MSRP) mechanism for ring topology” ?____ > > __ __ > > Hi There,____ > > We uploaded the new version draft “MPLS-TP Shared-Ring protection (MSRP) mechanism for ring topology”____ > > https://datatracker.ietf.org/doc/draft-cheng-mpls-tp-shared-ring-protection/____ > > We authors would like to see comments on this draft. Please help to review it and It would be highly appreciated to send your comments on the mailing list.____ > > ____ > > Thanks,____ > > Weiqiang Cheng____ > > > > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Thu Jul 10 06:43:44 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E9A9A1B28FA; Thu, 10 Jul 2014 06:43:41 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -102.252 X-Spam-Level: X-Spam-Status: No, score=-102.252 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, MIME_8BIT_HEADER=0.3, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id pWuYOdLMt2ZP; Thu, 10 Jul 2014 06:43:39 -0700 (PDT) Received: from smtpeg.etri.re.kr (smtpeg1.etri.re.kr [129.254.27.141]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 9C81F1B28F1; Thu, 10 Jul 2014 06:43:38 -0700 (PDT) Received: from SMTP4.etri.info (129.254.28.74) by SMTPEG1.etri.info (129.254.27.141) with Microsoft SMTP Server (TLS) id 14.1.355.2; Thu, 10 Jul 2014 22:43:35 +0900 Received: from SMTP2.etri.info ([169.254.2.160]) by SMTP4.etri.info ([10.2.6.33]) with mapi id 14.01.0355.002; Thu, 10 Jul 2014 22:43:32 +0900 From: =?utf-8?B?66WY7KCV64+Z?= To: "lberger@labn.net" Thread-Topic: =?utf-8?B?7ZqM7IugOiBbUlRHLURJUl0gW21wbHNdIFJ0Z0RpciByZXZpZXc6IGRyYWZ0?= =?utf-8?Q?-ietf-mpls-smp-requirements-06.txt?= Thread-Index: AQHPjWn3yaQ2bqHMa0u/oexBdb3lpJuPKTU+gAHv9wCAB+MbNv//vcGAgACuW7U= Date: Thu, 10 Jul 2014 13:43:31 +0000 Message-ID: <5B4A6CBE3924BB41A3BEE462A8E0B75A28749804@SMTP2.etri.info> References: <53A5ABED.9080408@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28748144@SMTP2.etri.info>, <53B8190E.6080505@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28749702@SMTP2.etri.info>, <53BE7F3B.9010005@labn.net> In-Reply-To: <53BE7F3B.9010005@labn.net> Accept-Language: ko-KR, en-US Content-Language: ko-KR X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [129.254.26.37] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/dqTrKZyD7Q_-48OzIRJr0KAfmME Cc: "rtg-dir@ietf.org" , "mpls@ietf.org" , "draft-ietf-mpls-smp-requirements.all@tools.ietf.org" , "rtg-ads@tools.ietf.org" Subject: [mpls] =?utf-8?b?7ZqM7IugOiDtmozsi6A6IFtSVEctRElSXSAgUnRnRGlyIHJl?= =?utf-8?q?view=3A_draft-ietf-mpls-smp-requirements-06=2Etxt?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: 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Y2tlZC4NCj4gVGhlc2UgaW5jbHVkZSBuZXR3b3JrcyB0aGF0IHN1cHBvcnQgdGhlIHJlcXVpcmVt ZW50cyBpbiBbUkZDNTY1NF0sDQo+IGFuZCBpbiBwYXJ0aWN1bGFyIHN1cHBvcnQgcmVxdWlyZW1l bnQgNTguIEZvciBzdWNoIG5ldHdvcmtzLA0KPiB0aGUgZm9sbG93aW5nIHJlcXVpcmVtZW50cyBh cHBseToNCj4NCj4gTyAuLi4NCj4NCj4gTyAuLi4NCj4NCg0KSSB0aGluayB0aGlzIHdpbGwgd29y ay4NCg0KVGhhbmtzLA0KTG91DQoNCi4uLg0KDQo= From nobody Thu Jul 10 07:01:29 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 459B31A0546; Thu, 10 Jul 2014 07:01:23 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -95.402 X-Spam-Level: X-Spam-Status: No, score=-95.402 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, CHARSET_FARAWAY_HEADER=3.2, J_CHICKENPOX_72=0.6, J_CHICKENPOX_91=0.6, MIME_8BIT_HEADER=0.3, MIME_CHARSET_FARAWAY=2.45, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id olgaexeln03G; Thu, 10 Jul 2014 07:01:19 -0700 (PDT) Received: from smtpeg.etri.re.kr (smtpeg1.etri.re.kr [129.254.27.141]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id F002B1A0527; Thu, 10 Jul 2014 07:01:18 -0700 (PDT) Received: from SMTP4.etri.info (129.254.28.74) by SMTPEG1.etri.info (129.254.27.141) with Microsoft SMTP Server (TLS) id 14.1.355.2; Thu, 10 Jul 2014 23:01:16 +0900 Received: from SMTP2.etri.info ([169.254.2.160]) by SMTP4.etri.info ([10.2.6.33]) with mapi id 14.01.0355.002; Thu, 10 Jul 2014 23:01:13 +0900 From: =?ks_c_5601-1987?B?t/nBpLW/?= To: Lou Berger , Yaacov Weingarten Thread-Topic: =?ks_c_5601-1987?B?yLi9xTogW1JURy1ESVJdIFttcGxzXSBSdGdEaXIgcmV2aWV3OiBk?= =?ks_c_5601-1987?Q?raft-ietf-mpls-smp-requirements-06.txt?= Thread-Index: AQHPjWn3yaQ2bqHMa0u/oexBdb3lpJuPKTU+gAI5dwCABCIRAIADfBBe//+7pICAALQH1Q== Date: Thu, 10 Jul 2014 14:01:13 +0000 Message-ID: <5B4A6CBE3924BB41A3BEE462A8E0B75A2874981D@SMTP2.etri.info> References: <53A5ABED.9080408@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28748144@SMTP2.etri.info> , <53BBCE48.7060008@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28749725@SMTP2.etri.info>, <53BE8141.1050506@labn.net> In-Reply-To: <53BE8141.1050506@labn.net> Accept-Language: ko-KR, en-US Content-Language: ko-KR X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [129.254.26.37] Content-Type: text/plain; charset="ks_c_5601-1987" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/QJyOQ2NRou0QVzPVjz8ZLfAKg4Q Cc: "mpls@ietf.org" , "draft-ietf-mpls-smp-requirements.all@tools.ietf.org" , "rtg-dir@ietf.org" , "rtg-ads@tools.ietf.org" Subject: [mpls] =?euc-kr?b?yLi9xTogyLi9xTogW1JURy1ESVJdICBSdGdEaXIgcmV2?= 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draft-akiya-mpls-lsp-ping-lag-multipath-00.txt Thread-Index: AQHPh0sKZ/vjNgoGA02gD6R1/DNUlZtviMsAgCZOLID//65qEIAAaXQAgAKhV1CAALnWgIAAp/Eg Date: Thu, 10 Jul 2014 21:39:44 +0000 Message-ID: References: <20140613210400.13388.18750.idtracker@ietfa.amsl.com> <10150BDE-17FD-43D0-9DE4-6E0CAAF3BD5E@gmail.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.255.85] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/T0QJE83plBjTDlwlwYE5fCszqkQ Cc: "mpls@ietf.org" Subject: Re: [mpls] New Version Notification for draft-akiya-mpls-lsp-ping-lag-multipath-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Jul 2014 21:39:48 -0000 Hi Sam, > Hi Nobo, >=20 > Thanks for the responses. > Snipped out things so as not to bloat the discussion. > I could review draft when you add those changes. > For now, have some points which I feel are more imp :D Hope you don't > mind. No problem, thanks for continued discussions! > > > >> From high level, this addition will help discover various LAG members > >> associated with the data path of an LSP. But I think it is difficult > >> to validate against a given FEC. Because the DDMAP info of LAG member > >> sent cannot be validated. If it is indeed could be validated, should b= e > documented in the ID. > > > > Good point. I think Section 4 (Mechanism to Validate L2 ECMP Traversal) > can use more texts to describe the what can be validated. How about we > make some changes in the Section 4 (Mechanism to Validate L2 ECMP > Traversal). > > > > [old] > > Described procedures allow initiating LSR to know: > > > > o The expected load balance information of every LAG member link, at > > LSR with TTL=3Dn. > > > > o The actual incoming interface at LSR with TTL=3Dn+1, including the > > interface index of LAG member link if incoming interface is a LAG > > interface. > > > > [new] > > Described procedures allow initiating LSR to know: > > > > o The expected load balance information of every LAG member link, at > > LSR with TTL=3Dn. > > > > o With specific entropy, the expected interface index of the > > outgoing LAG member link at TTL=3Dn. > > > > o With specific entropy, the interface index of the incoming LAG > > member link at TTL=3Dn+1. > > > > Expectation is that there's a relationship between the interface > > index of the outgoing LAG member link at TTL=3Dn and the interface > > index of the incoming LAG member link at TTL=3Dn+1 for all discovered > > entropies. In other words, set of entropies that load balances to > > outgoing LAG member link X at TTL=3Dn should all reach the nexthop on > > same incoming LAG member link Y at TTL=3Dn+1. > I think this is very important, for the reasons below. > 1. How does one know same LAG bundle originates at TTL=3Dn terminates at > TTL=3Dn+1. I am talking from discovery/treetrace/someother side? Both TTL= =3Dn > and TTL=3Dn+1 could tell it is LAG but doesn't mean that is 1:1 correspon= dence > per link/link member. If the LAG is back to back connected, then the LAG should have LAG member l= inks that are 1:1. What we are providing here is a way for the initiator to= traverse each LAG member and to allow the initiator perform some sanity ch= eck on this 1:1. > IOW, how does sec #3 be performed for the scenario described in last > paragraph in sec #4? Better yet, how does one know not to perform if any? This document is providing a way for the initiator to obtain more informati= on from downstream LSRs having LAG as outgoing/incoming interfaces. What th= e initiator can do with collected information is a bit of an implementation= matter, which is why above suggested text only described that at high leve= l. > 2. Let us take this scenario, I receive DDMAP at TTL=3Dn with various LA= G > interface+members and their multipath info. I send TTL=3Dn+1 with a chose= n > LAG interface and multi path info. At TTL=3Dn+1, what am I going to valid= ate? DDMAP validation procedures are not updated by this document. However, this= document should have described how the initiator updates the DDMAP receive= d back from TTL=3Dn before sending the DDMAP to TTL=3Dn+1. If it's indeed t= his missing information that's generating some questions, I do apologize. L= et me plan to add some texts on this. > For the FEC validation and interface validation, I need to check for spec= ific > information, in this case the LAG member. My understanding is, unlike loa= d > balanced interfaces, if LAG member is not pinned to specific LSP, the eve= n if > one member link fails, it load balances over other member link, because > MPLS will only see it as single interface from LIB point of view, no? Again DDMAP validation procedures are not updated by this document, let me = be clear on this point in the next revision as well. > 3. If the LAG member info be only used to indicate that there is LAG but = NOT > for validation, then text should be added to describe that. Especially on= how > FEC interface and label validation is done. True, I will add that LAG intf info TLV is not used for any FEC validation = purpose. > 4. As you said, if a LAG member is pinned to a specific LSP, then we will= be > using a separate DSMAP/DDMAP anyway. If so, could explain the benefit of > LAG with multi path info really used for? In other words, how much > beneficial compared to BFD over LAG? There are things like LACP and BFD on LAG which is intended to verify the L= 1/L2/L3 functionality of each LAG member. However, the missing (and importa= nt) piece is that when there are in/out label corruption (i.e. inconsistenc= ies between control plane and data plane) that only affects subset (one or = more) of the LAG member links, then there is nothing that can deterministic= ally test this at the MPLS layer. > 5. When do you consider a LAG member has failed and how do you indicate > or inform the requestor? No DDMAP validation changes, it's up to the initiator to gather and compare= the information. Thanks! -Nobo From nobody Thu Jul 10 14:55:36 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id F3FE91B2A83 for ; Thu, 10 Jul 2014 14:55:34 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.399 X-Spam-Level: X-Spam-Status: No, score=-1.399 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, J_CHICKENPOX_31=0.6, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id BFjNbJFIm2KS for ; Thu, 10 Jul 2014 14:55:33 -0700 (PDT) Received: from mail-qg0-x229.google.com (mail-qg0-x229.google.com [IPv6:2607:f8b0:400d:c04::229]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 0E63A1B2814 for ; Thu, 10 Jul 2014 14:55:32 -0700 (PDT) Received: by mail-qg0-f41.google.com with SMTP id i50so217684qgf.28 for ; Thu, 10 Jul 2014 14:55:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=Sf87+6G8T82doqCiFFOUMCC9zkXFZcV7epzG8fLdefg=; b=VXuR9vRB1rZbPQb2XcJysC6/KNvkot9zkYCSI+eblpqLlhEYgEwXzylcvZ8bUZSDmi cpWqeTmjyCPln55tJ3rQIDzArlFUUnkiC32I60eculxOEpSRopB99hPnT1kwzKjuMwAo FK5mnpLQLgy9aCjMGwSdaamFMNvZ21ghCo1jZFIb0y9bM2zIMHEhAIm8xxHyTBUPpaXk btCREAzxNZH0uDzPhFleQx8Rziu2MkEaUc0FJkLl8+UDIac83089oSv2mOpgSkl+Rzle I1m8Qpu22Ony1aJdIupxoN7P5PUOo5cq/lx4vfhxW6VUdB0pkp1v7MZslPy6Idg0IGOx eZew== MIME-Version: 1.0 X-Received: by 10.229.117.136 with SMTP id r8mr3361656qcq.17.1405029332175; Thu, 10 Jul 2014 14:55:32 -0700 (PDT) Received: by 10.96.70.106 with HTTP; Thu, 10 Jul 2014 14:55:32 -0700 (PDT) In-Reply-To: References: <20140613210400.13388.18750.idtracker@ietfa.amsl.com> <10150BDE-17FD-43D0-9DE4-6E0CAAF3BD5E@gmail.com> Date: Thu, 10 Jul 2014 14:55:32 -0700 Message-ID: From: Sam Aldrin To: "Nobo Akiya (nobo)" Content-Type: multipart/alternative; boundary=001a1133179c3e503a04fddde27d Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/MhZ-4ktCCjxSPg576wT_Em_9X_4 Cc: "mpls@ietf.org" Subject: Re: [mpls] New Version Notification for draft-akiya-mpls-lsp-ping-lag-multipath-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Jul 2014 21:55:35 -0000 --001a1133179c3e503a04fddde27d Content-Type: text/plain; charset=UTF-8 Hi Nobo, Thanks for the reply. Provides better clarity now. Inline for few of my comments. On Thu, Jul 10, 2014 at 2:39 PM, Nobo Akiya (nobo) wrote: > Hi Sam, > > > Hi Nobo, > > > > Thanks for the responses. > > Snipped out things so as not to bloat the discussion. > > I could review draft when you add those changes. > > For now, have some points which I feel are more imp :D Hope you don't > > mind. > > No problem, thanks for continued discussions! > > > > > > >> From high level, this addition will help discover various LAG members > > >> associated with the data path of an LSP. But I think it is difficult > > >> to validate against a given FEC. Because the DDMAP info of LAG member > > >> sent cannot be validated. If it is indeed could be validated, should > be > > documented in the ID. > > > > > > Good point. I think Section 4 (Mechanism to Validate L2 ECMP Traversal) > > can use more texts to describe the what can be validated. How about we > > make some changes in the Section 4 (Mechanism to Validate L2 ECMP > > Traversal). > > > > > > [old] > > > Described procedures allow initiating LSR to know: > > > > > > o The expected load balance information of every LAG member link, at > > > LSR with TTL=n. > > > > > > o The actual incoming interface at LSR with TTL=n+1, including the > > > interface index of LAG member link if incoming interface is a LAG > > > interface. > > > > > > [new] > > > Described procedures allow initiating LSR to know: > > > > > > o The expected load balance information of every LAG member link, at > > > LSR with TTL=n. > > > > > > o With specific entropy, the expected interface index of the > > > outgoing LAG member link at TTL=n. > > > > > > o With specific entropy, the interface index of the incoming LAG > > > member link at TTL=n+1. > > > > > > Expectation is that there's a relationship between the interface > > > index of the outgoing LAG member link at TTL=n and the interface > > > index of the incoming LAG member link at TTL=n+1 for all discovered > > > entropies. In other words, set of entropies that load balances to > > > outgoing LAG member link X at TTL=n should all reach the nexthop on > > > same incoming LAG member link Y at TTL=n+1. > > I think this is very important, for the reasons below. > > 1. How does one know same LAG bundle originates at TTL=n terminates at > > TTL=n+1. I am talking from discovery/treetrace/someother side? Both TTL=n > > and TTL=n+1 could tell it is LAG but doesn't mean that is 1:1 > correspondence > > per link/link member. > > If the LAG is back to back connected, then the LAG should have LAG member > links that are 1:1. What we are providing here is a way for the initiator > to traverse each LAG member and to allow the initiator perform some sanity > check on this 1:1. > %sam - Idea is noble. The only problem is, when you check at TTL=n+1, you do not know whether to expect from LAG member =1 or 2 or something. Hence, the question. > > > IOW, how does sec #3 be performed for the scenario described in last > > paragraph in sec #4? Better yet, how does one know not to perform if any? > > This document is providing a way for the initiator to obtain more > information from downstream LSRs having LAG as outgoing/incoming > interfaces. What the initiator can do with collected information is a bit > of an implementation matter, which is why above suggested text only > described that at high level. > %sam - If it is purely for the purpose of knowing a LAG interface exisits and to indicate packet ingress/egress is that interface, I have no problem. But that multipath info for each member is the itch. ;-) > > > 2. Let us take this scenario, I receive DDMAP at TTL=n with various LAG > > interface+members and their multipath info. I send TTL=n+1 with a chosen > > LAG interface and multi path info. At TTL=n+1, what am I going to > validate? > > DDMAP validation procedures are not updated by this document. However, > this document should have described how the initiator updates the DDMAP > received back from TTL=n before sending the DDMAP to TTL=n+1. If it's > indeed this missing information that's generating some questions, I do > apologize. Let me plan to add some texts on this. > %sam - NP. Will wait for next version. > > > For the FEC validation and interface validation, I need to check for > specific > > information, in this case the LAG member. My understanding is, unlike > load > > balanced interfaces, if LAG member is not pinned to specific LSP, the > even if > > one member link fails, it load balances over other member link, because > > MPLS will only see it as single interface from LIB point of view, no? > > Again DDMAP validation procedures are not updated by this document, let me > be clear on this point in the next revision as well. > > > 3. If the LAG member info be only used to indicate that there is LAG but > NOT > > for validation, then text should be added to describe that. Especially > on how > > FEC interface and label validation is done. > > True, I will add that LAG intf info TLV is not used for any FEC validation > purpose. > > > 4. As you said, if a LAG member is pinned to a specific LSP, then we > will be > > using a separate DSMAP/DDMAP anyway. If so, could explain the benefit of > > LAG with multi path info really used for? In other words, how much > > beneficial compared to BFD over LAG? > > There are things like LACP and BFD on LAG which is intended to verify the > L1/L2/L3 functionality of each LAG member. However, the missing (and > important) piece is that when there are in/out label corruption (i.e. > inconsistencies between control plane and data plane) that only affects > subset (one or more) of the LAG member links, then there is nothing that > can deterministically test this at the MPLS layer. > > > 5. When do you consider a LAG member has failed and how do you indicate > > or inform the requestor? > > No DDMAP validation changes, it's up to the initiator to gather and > compare the information. > %sam - So, does that mean the status reported is per bundled interface and not per Link member? -sam > > Thanks! > > -Nobo > > --001a1133179c3e503a04fddde27d Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi Nobo,

Thanks for the reply. Provides= better clarity now.
Inline for few of my comments.


On Thu, Jul 10, 2014 = at 2:39 PM, Nobo Akiya (nobo) <nobo@cisco.com> wrote:
Hi Sam,

> Hi Nobo,
>
> Thanks for the responses.
> Snipped out things so as not to bloat the discussion.
> I could review draft when you add those changes.
> For now, have some points which I feel are more imp :D Hope you don= 9;t
> mind.

No problem, thanks for continued discussions!

> >
> >> From high level, this addition will help discover various LAG= members
> >> associated with the data path of an LSP. But I think it is di= fficult
> >> to validate against a given FEC. Because the DDMAP info of LA= G member
> >> sent cannot be validated. If it is indeed could be validated,= should be
> documented in the ID.
> >
> > Good point. I think Section 4 (Mechanism to Validate L2 ECMP Trav= ersal)
> can use more texts to describe the what can be validated. How about we=
> make some changes in the Section 4 (Mechanism to Validate L2 ECMP
> Traversal).
> >
> > [old]
> > =C2=A0 Described procedures allow initiating LSR to know:
> >
> > =C2=A0 o =C2=A0The expected load balance information of every LAG= member link, at
> > =C2=A0 =C2=A0 =C2=A0LSR with TTL=3Dn.
> >
> > =C2=A0 o =C2=A0The actual incoming interface at LSR with TTL=3Dn+= 1, including the
> > =C2=A0 =C2=A0 =C2=A0interface index of LAG member link if incomin= g interface is a LAG
> > =C2=A0 =C2=A0 =C2=A0interface.
> >
> > [new]
> > =C2=A0 Described procedures allow initiating LSR to know:
> >
> > =C2=A0 o =C2=A0The expected load balance information of every LAG= member link, at
> > =C2=A0 =C2=A0 =C2=A0LSR with TTL=3Dn.
> >
> > =C2=A0 o =C2=A0With specific entropy, the expected interface inde= x of the
> > =C2=A0 =C2=A0 =C2=A0outgoing LAG member link at TTL=3Dn.
> >
> > =C2=A0 o =C2=A0With specific entropy, the interface index of the = incoming LAG
> > =C2=A0 =C2=A0 =C2=A0member link at TTL=3Dn+1.
> >
> > =C2=A0 Expectation is that there's a relationship between the= interface
> > =C2=A0 index of the outgoing LAG member link at TTL=3Dn and the i= nterface
> > =C2=A0 index of the incoming LAG member link at TTL=3Dn+1 for all= discovered
> > =C2=A0 entropies. =C2=A0In other words, set of entropies that loa= d balances to
> > =C2=A0 outgoing LAG member link X at TTL=3Dn should all reach the= nexthop on
> > =C2=A0 same incoming LAG member link Y at TTL=3Dn+1.
> I think this is very important, for the reasons below.
> 1. How does one know same LAG bundle originates at TTL=3Dn terminates = at
> TTL=3Dn+1. I am talking from discovery/treetrace/someother side? Both = TTL=3Dn
> and TTL=3Dn+1 could tell it is LAG but doesn't mean that is 1:1 co= rrespondence
> per link/link member.

If the LAG is back to back connected, then the LAG should have = LAG member links that are 1:1. What we are providing here is a way for the = initiator to traverse each LAG member and to allow the initiator perform so= me sanity check on this 1:1.
%sam - Idea is noble. The only problem is, when you check= at TTL=3Dn+1, you do not know whether to expect from LAG member =3D1 or 2 = or something. Hence, the question.=C2=A0

> IOW, how does sec #3 be performed for the scenario described in last > paragraph in sec #4? Better yet, how does one know not to perform if a= ny?

This document is providing a way for the initiator to obtain more inf= ormation from downstream LSRs having LAG as outgoing/incoming interfaces. W= hat the initiator can do with collected information is a bit of an implemen= tation matter, which is why above suggested text only described that at hig= h level.
%sam - If it is purely for the purpose of knowing a LAG i= nterface exisits and to indicate packet ingress/egress is that interface, I= have no problem. But that multipath info for each member is the itch. ;-)<= /div>

> 2. Let us take this scenario, =C2=A0I receive DDMAP at TTL=3Dn with va= rious LAG
> interface+members and their multipath info. I send TTL=3Dn+1 with a ch= osen
> LAG interface and multi path info. At TTL=3Dn+1, what am I going to va= lidate?

DDMAP validation procedures are not updated by this document. However= , this document should have described how the initiator updates the DDMAP r= eceived back from TTL=3Dn before sending the DDMAP to TTL=3Dn+1. If it'= s indeed this missing information that's generating some questions, I d= o apologize. Let me plan to add some texts on this.
%sam - NP. Will wait for next version.=C2=A0

> For the FEC validation and interface validation, I need to check for s= pecific
> information, in this case the LAG member. My understanding is, unlike = load
> balanced interfaces, if LAG member is not pinned to specific LSP, the = even if
> one member link fails, it load balances over other member link, becaus= e
> MPLS will only see it as single interface from LIB point of view, no?<= br>
Again DDMAP validation procedures are not updated by this document, l= et me be clear on this point in the next revision as well.

> 3. If the LAG member info be only used to indicate that there is LAG b= ut NOT
> for validation, then text should be added to describe that. Especially= on how
> FEC interface and label validation is done.

True, I will add that LAG intf info TLV is not used for any FEC valid= ation purpose.

> 4. As you said, if a LAG member is pinned to a specific LSP, then we w= ill be
> using a separate DSMAP/DDMAP anyway. If so, could explain the benefit = of
> LAG with multi path info really used for? In other words, how much
> beneficial compared to BFD over LAG?

There are things like LACP and BFD on LAG which is intended to verify= the L1/L2/L3 functionality of each LAG member. However, the missing (and i= mportant) piece is that when there are in/out label corruption (i.e. incons= istencies between control plane and data plane) that only affects subset (o= ne or more) of the LAG member links, then there is nothing that can determi= nistically test this at the MPLS layer.

> 5. When do you consider a LAG member has failed and how do you indicat= e
> or inform the requestor?

No DDMAP validation changes, it's up to the initiator to gather a= nd compare the information.
%sam - So, does that mean = the status reported is per bundled interface and not per Link member?

-sam=C2=A0

Thanks!

-Nobo


--001a1133179c3e503a04fddde27d-- From nobody Thu Jul 10 16:44:19 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 74CC61A00B9 for ; Thu, 10 Jul 2014 16:44:14 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -114.552 X-Spam-Level: X-Spam-Status: No, score=-114.552 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, J_CHICKENPOX_31=0.6, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id aDQKm5vNJwND for ; Thu, 10 Jul 2014 16:44:11 -0700 (PDT) Received: from alln-iport-2.cisco.com (alln-iport-2.cisco.com [173.37.142.89]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No 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2014 23:45:03 +0000 Received: from xhc-aln-x04.cisco.com (xhc-aln-x04.cisco.com [173.36.12.78]) by rcdn-core-1.cisco.com (8.14.5/8.14.5) with ESMTP id s6ANiA05031195 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Thu, 10 Jul 2014 23:44:10 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-aln-x04.cisco.com ([173.36.12.78]) with mapi id 14.03.0123.003; Thu, 10 Jul 2014 18:44:10 -0500 From: "Nobo Akiya (nobo)" To: Sam Aldrin Thread-Topic: [mpls] New Version Notification for draft-akiya-mpls-lsp-ping-lag-multipath-00.txt Thread-Index: AQHPh0sKZ/vjNgoGA02gD6R1/DNUlZtviMsAgCZOLID//65qEIAAaXQAgAKhV1CAALnWgIAAp/EggABmnwD//8WGoA== Date: Thu, 10 Jul 2014 23:44:10 +0000 Message-ID: References: <20140613210400.13388.18750.idtracker@ietfa.amsl.com> <10150BDE-17FD-43D0-9DE4-6E0CAAF3BD5E@gmail.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.255.85] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/EFtkfHAV7boRLeyiySwHUoF-Euk Cc: "mpls@ietf.org" Subject: Re: [mpls] New Version Notification for draft-akiya-mpls-lsp-ping-lag-multipath-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Jul 2014 23:44:14 -0000 SGkgU2FtLA0KDQo+IC0tLS0tT3JpZ2luYWwgTWVzc2FnZS0tLS0tDQo+IEZyb206IFNhbSBBbGRy aW4gW21haWx0bzphbGRyaW4uaWV0ZkBnbWFpbC5jb21dDQo+IFNlbnQ6IFRodXJzZGF5LCBKdWx5 IDEwLCAyMDE0IDU6NTYgUE0NCj4gVG86IE5vYm8gQWtpeWEgKG5vYm8pDQo+IENjOiBtcGxzQGll dGYub3JnDQo+IFN1YmplY3Q6IFJlOiBbbXBsc10gTmV3IFZlcnNpb24gTm90aWZpY2F0aW9uIGZv ciBkcmFmdC1ha2l5YS1tcGxzLWxzcC1waW5nLQ0KPiBsYWctbXVsdGlwYXRoLTAwLnR4dA0KPiAN Cj4gSGkgTm9ibywNCj4gDQo+IFRoYW5rcyBmb3IgdGhlIHJlcGx5LiBQcm92aWRlcyBiZXR0ZXIg 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FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, J_CHICKENPOX_81=0.6, MIME_8BIT_HEADER=0.3, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id SYImKIk6z9U0 for ; Thu, 10 Jul 2014 20:23:58 -0700 (PDT) Received: from mail-qc0-x235.google.com (mail-qc0-x235.google.com [IPv6:2607:f8b0:400d:c01::235]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 23ABA1A01BA for ; Thu, 10 Jul 2014 20:23:58 -0700 (PDT) Received: by mail-qc0-f181.google.com with SMTP id x13so469684qcv.40 for ; Thu, 10 Jul 2014 20:23:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=wQ6NhBHbER6vQcLhnNh8fmxExX7Nm+fJOAF52a7Hs6E=; b=I9zum3JrxvNTD9Ar7e/tyRSs71Bb7gLdhLY0mOdZp54eC1GDNFrZ+oYNzSLDNT5cYV MLj1ujLClRweOZ/37qgfVp05n0Nxqho361xIVCUxPaiAT6EpzrC5ZOXpOIzDkAHyFm78 rkyXwtzuAe9S25xm1alMEfthyeij7MlZ8SkbQxK7NiKa3zS2ri4JiAWEG8gZfcKHNexl xzJrCaW8jjISlksfmEJ/2Lh+w1JKD3cWgEK9no5KGo1gteDcXvq9dk28CoAYTg+ZH+i4 s7t/UZtDnM9gixowmWqFNwyv7Kdc6Q6FwzdX0N+oYGuOfUrTH96sT7akenA8tLkhYNQ8 fM9Q== MIME-Version: 1.0 X-Received: by 10.224.136.200 with SMTP id s8mr87997034qat.85.1405049037360; Thu, 10 Jul 2014 20:23:57 -0700 (PDT) Received: by 10.224.93.10 with HTTP; Thu, 10 Jul 2014 20:23:57 -0700 (PDT) In-Reply-To: <53BE8775.6030606@pi.nu> References: <76CD132C3ADEF848BD84D028D243C927336BE7CD@nkgeml512-mbx.china.huawei.com> <53BE8775.6030606@pi.nu> Date: Fri, 11 Jul 2014 11:23:57 +0800 Message-ID: From: weiqiang cheng To: Loa Andersson Content-Type: multipart/alternative; boundary=001a11c2caa2c3922004fde278f9 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/OFg8PdPCEVEzeGyAmolfkFMbzwM Cc: "draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org" , "mpls@ietf.org" Subject: Re: [mpls] =?utf-8?q?=5BMPLS=5D_Any_comments_on_the_draft_of_MPLS-TP_?= =?utf-8?q?Shared-Ring_protection_=28MSRP=29_mechanism_for_ring_topology?= =?utf-8?b?4oCdID8=?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Jul 2014 03:24:00 -0000 --001a11c2caa2c3922004fde278f9 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Loa, Thank you very much for your information. Ring typologies is an economical solution for operators' network,and it can provide double physical routes with minimum number of fibers or Microwave links. So lots of operators access and metro networks are constructed by rings. A specific solution for Ring topology is very valuable. Such as China Mobile, more than 85% fiber networks are using ring topology. Till now, more than 600,000 MPLS-TP based Packet transport network nodes deployed, and most of them are constructed with ring typology. From 2013 years, China mobile began to deploy the Ring Protection solutions as the draft described, now more than 5,000 Nodes have already finished upgrading. The result shows that the networks reliability improved and the operation efficiency also are increased. B.R. Weiqiang Cheng 2014-07-10 20:30 GMT+08:00 Loa Andersson : > Weiqiang Cheng, Authors, > > Sections 5.2. and 5.2.6.1 of RFC 5654 discusses protection in specific > topologies in general and in ring topologies. There quite a number of > specific requirements, but I think that a very high-level summary would > be: "In the case it is beneficial in the operational situation to have > a solution for a specific topology and that solution does not create > drawbacks for the general MPLS protection mechanisms, such a solution > may be specified and deployed." > > /Loa > > > On 2014-07-10 06:57, weiqiang cheng wrote: > >> Hi Jie, >> Thanks for your comments. >> >> MPLS-TP based networks are usually constructed with multiple-ring >> topology.In some failure scenarios, linear protection such as PSC cannot >> cover the multi-failure issue.In addition,for many application scenarios >> such as mobile backhaul,a large number of services should be terminated >> in one core node.Because the linear protection should be executed end to >> end,the core node will take heavy load to handle OAM messages and >> Protection switching. >> >> SMP is a very good solution to share the resources and improve the >> network reliability. My understanding is that shared ring protection is >> a special case of SMP for ring specifically. It is more easy to >> implement and able to reduce >> the complexity of protection configuration and operation in ring topolog= y. >> >> B.R. >> Weiqiang Cheng >> >> >> 2014-07-09 19:10 GMT+08:00 Dongjie (Jimmy) > >: >> >> Dear authors, ____ >> >> __ __ >> >> I have one quick comment on this draft: ____ >> >> __ __ >> >> >> Since we have Linear Protection (PSC) and the work being done on >> Shared Mesh Protection, do we need dedicated protection solution for >> ring topology?____ >> >> __ __ >> >> Best regards,____ >> >> Jie____ >> >> __ __ >> >> *From:*mpls [mailto:mpls-bounces@ietf.org >> ] *On Behalf Of *weiqiang cheng >> *Sent:* Wednesday, July 09, 2014 6:41 PM >> *To:* mpls@ietf.org >> *Cc:* draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org >> >> *Subject:* [mpls] [MPLS] Any comments on the draft of MPLS-TP >> Shared-Ring protection (MSRP) mechanism for ring topology=E2=80=9D ?= ____ >> >> __ __ >> >> Hi There,____ >> >> We uploaded the new version draft =E2=80=9CMPLS-TP Shared-Ring prote= ction >> (MSRP) mechanism for ring topology=E2=80=9D____ >> >> https://datatracker.ietf.org/doc/draft-cheng-mpls-tp- >> shared-ring-protection/____ >> >> We authors would like to see comments on this draft. Please help to >> review it and It would be highly appreciated to send your comments on th= e >> mailing list.____ >> >> ____ >> >> Thanks,____ >> >> Weiqiang Cheng____ >> >> >> >> >> >> _______________________________________________ >> mpls mailing list >> mpls@ietf.org >> https://www.ietf.org/mailman/listinfo/mpls >> >> > -- > > > Loa Andersson email: loa@mail01.huawei.com > Senior MPLS Expert loa@pi.nu > Huawei Technologies (consultant) phone: +46 739 81 21 64 > --001a11c2caa2c3922004fde278f9 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi Loa,
Thank you very much for your i= nformation.
Ring typologies is an economical solution for operato= rs' network,and it can provide double physical routes with minimum numb= er of fibers or Microwave links.

So lots of operators access and metro networks are cons= tructed by rings. A specific solution for Ring topology is very valuable.

Such as China Mobile, more than 85% fiber networks = are using ring topology. Till now, more than 600,000 MPLS-TP based Packet t= ransport network nodes deployed, and most of them are constructed with ring= typology. From 2013 years, China mobile began to deploy the Ring Protectio= n solutions as the draft described, now more than 5,000 Nodes have already = finished upgrading. The result shows that the networks reliability improved= and the operation efficiency also are increased.

B.R.
Weiqiang Cheng =C2=A0 =C2=A0 =C2=A0



<= br>
2014-07-10 20:30 GMT+08:00 Loa Andersson <loa@pi.nu<= /a>>:
Weiqiang Cheng, Authors,

Sections 5.2. and 5.2.6.1 of RFC 5654 discusses protection in specific
topologies in general and in ring topologies. There quite a number of
specific requirements, but I think that a very high-level summary would
be: "In the case it is beneficial in the operational situation to have=
a solution for a specific topology and that solution does not create
drawbacks for the general MPLS protection mechanisms, such a solution
may be specified and deployed."

/Loa


On 2014-07-10 06:57, weiqiang cheng wrote:
Hi Jie,
Thanks for your comments.

MPLS-TP based networks are usually constructed with multiple-ring
topology.In some failure scenarios, linear protection such as PSC cannot cover the multi-failure issue.In addition,for many application scenarios such as mobile backhaul,a large number of services should be terminated
in one core node.Because the linear protection should be executed end to end,the core node will take heavy load to handle OAM messages and
Protection switching.

SMP is a very good solution to share the resources and improve the
network reliability. My understanding is that shared ring protection is
a special case of SMP for ring specifically. It is more easy to
implement and able to reduce
the complexity of protection configuration and operation in ring topology.<= br>
B.R.
Weiqiang Cheng


2014-07-09 19:10 GMT+08:00 Dongjie (Jimmy) <jie.dong@huawei.com
<mailto:jie.don= g@huawei.com>>:

=C2=A0 =C2=A0 Dear authors, ____

=C2=A0 =C2=A0 __ __

=C2=A0 =C2=A0 I have one quick comment on this draft: ____

=C2=A0 =C2=A0 __ __


=C2=A0 =C2=A0 Since we have Linear Protection (PSC) and the work being done= on
=C2=A0 =C2=A0 Shared Mesh Protection, do we need dedicated protection solut= ion for
=C2=A0 =C2=A0 ring topology?____

=C2=A0 =C2=A0 __ __

=C2=A0 =C2=A0 Best regards,____

=C2=A0 =C2=A0 Jie____

=C2=A0 =C2=A0 __ __

=C2=A0 =C2=A0 *From:*mpls [mailto:mpls-bounces@ietf.org
=C2=A0 =C2=A0 <mailto:mpls-bounces@ietf.org>] *On Behalf Of *weiqiang chen= g
=C2=A0 =C2=A0 *Sent:* Wednesday, July 09, 2014 6:41 PM
=C2=A0 =C2=A0 *To:* mpls= @ietf.org <mailto:mpls@ietf.org>
=C2=A0 =C2=A0 *Cc:* draft-cheng-mpls-tp-shared-r= ing-protection@tools.ietf.org
=C2=A0 =C2=A0 <mailto:draft-cheng-mpls-tp-sha= red-ring-protection@tools.ietf.org>
=C2=A0 =C2=A0 *Subject:* [mpls] [MPLS] Any comments on the draft of MPLS-TP=
=C2=A0 =C2=A0 Shared-Ring protection (MSRP) mechanism for ring topology=E2= =80=9D ?____

=C2=A0 =C2=A0 __ __

=C2=A0 =C2=A0 Hi There,____

=C2=A0 =C2=A0 We uploaded the new version draft =E2=80=9CMPLS-TP Shared-Rin= g protection (MSRP) mechanism for ring topology=E2=80=9D____

=C2=A0 =C2=A0 https://datatracker.ietf.= org/doc/draft-cheng-mpls-tp-shared-ring-protection/____
=C2=A0 =C2=A0 We authors would like to see comments on this draft. Please h= elp to review it and It would be highly appreciated to send your comments o= n the mailing list.____

=C2=A0 =C2=A0 =C2=A0 ____

=C2=A0 =C2=A0 Thanks,____

=C2=A0 =C2=A0 Weiqiang Cheng____





_______________________________________________
mpls mailing list
mpls@ietf.org
ht= tps://www.ietf.org/mailman/listinfo/mpls


--


Loa Andersson =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0email: loa@mail01.huawei.com
Senior MPLS Expert =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0loa@pi.nu
Huawei Technologies (consultant) =C2=A0 =C2=A0 phone: +46 739 81 2= 1 64

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kt2sm830753pbc.83.2014.07.10.21.34.59 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 10 Jul 2014 21:35:01 -0700 (PDT) Date: Fri, 11 Jul 2014 12:35:09 +0800 From: "wangminxue@gmail.com" To: "weiqiang cheng" , loa X-Priority: 3 X-GUID: 519F0AAD-8AD5-464A-A3D1-DA27BD7654B1 X-Has-Attach: no X-Mailer: Foxmail 7, 1, 3, 52[cn] Mime-Version: 1.0 Message-ID: <2014071112350787754332@gmail.com> Content-Type: multipart/alternative; boundary="----=_001_NextPart008800163802_=----" Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/SedewUdY2LPSgQRRH9WreLeshg4 Cc: mpls , draft-cheng-mpls-tp-shared-ring-protection Subject: [mpls] =?gb2312?b?Rnc6IEZXOiAgW01QTFNdIEFueSBjb21tZW50cyBvbiB0?= =?gb2312?b?aGUgZHJhZnQgb2YgTVBMUy1UUCBTaGFyZWQtUmluZyBwcm90ZWN0?= =?gb2312?b?aW9uIChNU1JQKSBtZWNoYW5pc20gZm9yIHJpbmcgdG9wb2xvZ3k=?= =?gb2312?b?obEgPw==?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , 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Hi all,
I  am the China Mob= ile PTN=20 ring protection project managers. We have deployed the ring prot= ection=20 in this draft in Guangdong Province, which is the most economically developed pro= vince in=20 China. Currently ring protection techneque is used mostly=20 in aggreation and access layers in metro PTN network=20 with 3G/4G and group customer services.
In the performance test, the = switching=20 time of single point failure is less than 30ms, while the multi-point fail= ure is=20 less than 45ms. The test results show that solution in the draft can achei= ve the=20 expected telecom performance. 
 
B.R.
 
Wang Minxue
China Mobile Reserach Institute
 

From: weiqiang=20 cheng [mailto:chengwq@gmail.com]
Sent: Friday, July 11, 2014 11= :24=20 AM
To: Loa Andersson
Cc: Dongjie (Jimmy); mpls@ietf.or= g;=20 draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org
Subject: Re:=20 [mpls] [MPLS] Any comments on the draft of MPLS-TP Shared-Ring protection = (MSRP)=20 mechanism for ring topology=A1=B1 ?

 

Hi Loa,

Thank you very much for your=20 information.

Ring typologies is an economical s= olution=20 for operators' network,and it can provide double physical routes with mini= mum=20 number of fibers or Microwave links.

 

So lots of operators access and me= tro=20 networks are constructed by rings. A specific solution for Ring topology i= s very=20 valuable.

 

Such as China Mobile, more than 85= % fiber=20 networks are using ring topology. Till now, more than 600,000 MPLS-TP base= d=20 Packet transport network nodes deployed, and most of them are constructed = with=20 ring typology. From 2013 years, China mobile began to deploy the Ring Prot= ection=20 solutions as the draft described, now more than 5,000 Nodes have already=20 finished upgrading. The result shows that the networks reliability improve= d and=20 the operation efficiency also are increased.

 

B.R.

Weiqiang Cheng    =20  

 

 

=

 

2014-07-10 20:30 GMT+08:00 Loa And= ersson=20 <loa@pi.nu>:

Weiqiang Cheng, Authors,

Se= ctions=20 5.2. and 5.2.6.1 of RFC 5654 discusses protection in specific
topologie= s in=20 general and in ring topologies. There quite a number of
specific=20 requirements, but I think that a very high-level summary would
be: "In = the=20 case it is beneficial in the operational situation to have
a solution f= or a=20 specific topology and that solution does not create
drawbacks for the g= eneral=20 MPLS protection mechanisms, such a solution
may be specified and=20 deployed."

/Loa



On 2014-07-10 06:57, weiqi= ang cheng=20 wrote:

Hi Jie,
Thanks for your=20 comments.

MPLS-TP based networks are usually constructed with=20 multiple-ring
topology.In some failure scenarios, linear protection s= uch as=20 PSC cannot
cover the multi-failure issue.In addition,for many applica= tion=20 scenarios
such as mobile backhaul,a large number of services should b= e=20 terminated
in one core node.Because the linear protection should be=20 executed end to
end,the core node will take heavy load to handle OAM=20 messages and
Protection switching.

SMP is a very good solution= to=20 share the resources and improve the
network reliability. My understan= ding=20 is that shared ring protection is
a special case of SMP for ring=20 specifically. It is more easy to
implement and able to reduce
the=20 complexity of protection configuration and operation in ring=20 topology.

B.R.
Weiqiang Cheng


2014-07-09 19:10 GMT+= 08:00=20 Dongjie (Jimmy) <jie.dong@huawei.com

<mailto:jie.dong@huawei.com>>:

    De= ar=20 authors, ____

    __ __

    I have one= quick=20 comment on this draft: ____

    __ __=



    Since we h= ave Linear=20 Protection (PSC) and the work being done on
    Shared Mesh= =20 Protection, do we need dedicated protection solution=20 for

    ring=20 topology?____

    __ __

    Best=20 regards,____

    Jie____

    __=20 __

    *From:*mpls [mailto:mpls-bounces@ietf.org
    <mailto:mpls-bounces@ietf.org>] *On Behalf Of *weiqiang=20 cheng
    *Sent:* Wednesday, July 09, 2014 6:41 PM
 = ;=20   *To:* mpls@ietf.= org=20 <mailto:mpls@ietf.org>
    *Cc:* draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.or= g
 =20   <mailto:draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.or= g>
 =20   *Subject:* [mpls] [MPLS] Any comments on the draft of MPLS-TP
=  =20   Shared-Ring protection (MSRP) mechanism for ring topology=A1=B1=20 ?____

    __ __

    Hi=20 There,____

    We uploaded the new version draft =A1=B0= MPLS-TP=20 Shared-Ring protection (MSRP) mechanism for ring topology=A1=B1____
<= BR> =20   https://datatracker.ietf.org/doc/draft-cheng-mpls-tp-sha= red-ring-protection/____

 =20   We authors would like to see comments on this draft. Please help = to=20 review it and It would be highly appreciated to send your comments on th= e=20 mailing list.____

      ____

   =20 Thanks,____

    Weiqiang Cheng____






_______________________________________= ________
mpls=20 mailing list
mpls@ietf.org
https://www.ietf.org/mailman/listinfo/mpls


--


Loa Andersson &n= bsp;=20                    =20  email: loa@mail01.huawei.com
S= enior MPLS=20 Expert                   &nbs= p;=20      loa@pi.nu
Huawei Techno= logies=20 (consultant)     phone: +46 739 81 21 64

 

 
wangminxue@gmail.com
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c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=ot2mG6P/1v8XgJxFCKvnLb3coZtXxH4XEsDsbnbgylc=; b=cn3zVG9+RMFuuvHR9LLHMQ///jUStR+L/flcYsfzE8W7m3dKiMwfztKr8LyCmCYvT1 ReoPGO/oNaguIizq8ablLN4vXHxKUGzl3udFvgwdc6yRO1Ba8vgT+t0QnyYPtd8dGIED 3bbN4cBPk66Z7z056o+rbArTwHq8C8FaWvSrZlqygSTc2uGtymfSPA3rN1Iz3oisv7Cn rQTwD39jwK5keScXsImm4dsDxONDdGD9532dvGKtV+o8c2W8CJ5hWr32YTNT6kROEwte oWnNU7gsLuP+irWiY6jSk2xPSA9SiQ2I7k4xlW2VfhLl745qN5mFYgrRqvsTpjYLqQhG fHrQ== MIME-Version: 1.0 X-Received: by 10.224.55.134 with SMTP id u6mr26184525qag.71.1405069438776; Fri, 11 Jul 2014 02:03:58 -0700 (PDT) Received: by 10.224.93.10 with HTTP; Fri, 11 Jul 2014 02:03:58 -0700 (PDT) In-Reply-To: References: Date: Fri, 11 Jul 2014 17:03:58 +0800 Message-ID: From: weiqiang cheng To: liu.guoman@zte.com.cn Content-Type: multipart/alternative; boundary=047d7bf0dd16c87c3804fde73857 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/SPKY0g0bpJWlXuRveuDZx1QzNas Cc: "mpls@ietf.org" , "draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org" Subject: Re: [mpls] =?utf-8?b?562U5aSNOiAgW01QTFNdIEFueSBjb21tZW50cyBvbiB0aGUg?= =?utf-8?q?draft_of_MPLS-TP_Shared-Ring_protection_=28MSRP=29_mechanism_fo?= =?utf-8?q?r_ring_topology=E2=80=9D_=3F?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Jul 2014 09:04:01 -0000 --047d7bf0dd16c87c3804fde73857 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Guoman, The "APS" should be "RPS" Ring Protection Switching, and It is a clerical error. So sorry to make you confused. We will modify it in late version. Thanks a lot. B.R. Weiqiang Cheng 2014-07-11 14:51 GMT+08:00 : > hi, weiqiang > I have just reviewed this draft and a question for clause 3 coordination > protocol > it seem to have two types protocol , one is RPS protocol in clause 3.1. > another is APS protocol in clause 3.2. > is it necessary to use the two types of protocol in the mpls-tp ring > protection? > I think the answer is "no". how about it=EF=BC=9F > > thank you ! > > B.R. > liu > > > > > *weiqiang cheng >* > =E5=8F=91=E4=BB=B6=E4=BA=BA: "mpls" > > 2014-07-09 18:41 > =E6=94=B6=E4=BB=B6=E4=BA=BA > "mpls@ietf.org" , > =E6=8A=84=E9=80=81 > "draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org" < > draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org> > =E4=B8=BB=E9=A2=98 > [mpls] [MPLS] Any comments on the draft of MPLS-TP Shared-Ring protection > (MSRP) mechanism for ring topology=E2=80=9D ? > > > > > Hi There, > We uploaded the new version draft =E2=80=9CMPLS-TP Shared-Ring protection= (MSRP) > mechanism for ring topology=E2=80=9D > > *https://datatracker.ietf.org/doc/draft-cheng-mpls-tp-shared-ring-protect= ion/* > > We authors would like to see comments on this draft. Please help to revie= w > it and It would be highly appreciated to send your comments on the mailin= g > list. > > Thanks, > Weiqiang Cheng_______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > > > > -------------------------------------------------------- > ZTE Information Security Notice: The information contained in this mail (= and any attachment transmitted herewith) is privileged and confidential and= is intended for the exclusive use of the addressee(s). If you are not an = intended recipient, any disclosure, reproduction, distribution or other dis= semination or use of the information contained is strictly prohibited. If = you have received this mail in error, please delete it and notify us immedi= ately. > > > > --047d7bf0dd16c87c3804fde73857 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi Guoman,

The "APS" should b= e "RPS" Ring Protection Switching, and It is a=C2=A0clerical erro= r. So sorry to make you confused. We will modify it in late version.
<= div> Thanks a lot.

B.R.
Weiqiang Cheng
<= /div>


2014-07-= 11 14:51 GMT+08:00 <liu.guoman@zte.com.cn>:
hi, weiqiang
I have just reviewed this draft and a question for clause 3 coordination protocol
=C2=A0it seem to have two types protocol , one is RPS protocol in clause 3.1. another is APS protocol in clause 3.2.
=C2=A0is it necessary to use the two types of protocol in the mpls-tp ring protection?
=C2=A0I think the answer is "no". how about it=EF=BC=9F

thank you !

B.R.
liu




weiqiang cheng &l= t;chengwq@gmail.com<= /a>>
=E5=8F=91=E4=BB=B6=E4=BA=BA: =C2= =A0"mpls" <mpls-bounces@ietf.org>

2014-07-09 18:41

=E6=94=B6=E4=BB= =B6=E4=BA=BA
"mpls@ietf.org" <mpls@ietf.org>,
=E6=8A=84=E9=80= =81
"dra= ft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org" <draft-cheng-mpls-tp-shared-ring-protection@tools.ie= tf.org>
=E4=B8=BB=E9=A2= =98
[mpls] [MPLS] Any comments on= the draft of MPLS-TP Shared-Ring protection (MSRP) mechanism for ring topology=E2=80= =9D ?





Hi There,
We uploaded the new version draft =E2=80=9CMPLS-TP= Shared-Ring protection (MSRP) mechanism for ring topology=E2=80=9D
= https://datatracker.ietf.org/doc/draft-cheng-mpls-tp-shared-ring-protection= /
We authors would like to see comments on this draf= t. Please help to review it and It would be highly appreciated to send your comments on the mailing list.
=C2=A0
Thanks,
Weiqiang Cheng__= _____________________________________________
mpls mailing list
mpls@ietf.org
https://www.ietf.org/mailman/listinfo/mpls
 


--------------------------------------------------------
ZTE Information Security Notice: The information contained in this mail (an=
d any attachment transmitted herewith) is privileged and confidential and i=
s intended for the exclusive use of the addressee(s).  If you are not an in=
tended recipient, any disclosure, reproduction, distribution or other disse=
mination or use of the information contained is strictly prohibited.  If yo=
u have received this mail in error, please delete it and notify us immediat=
ely.


--047d7bf0dd16c87c3804fde73857-- From nobody Fri Jul 11 04:20:42 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3139B1B2867 for ; Fri, 11 Jul 2014 04:20:37 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.251 X-Spam-Level: X-Spam-Status: No, score=-2.251 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, MIME_8BIT_HEADER=0.3, RP_MATCHES_RCVD=-0.651] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qDDF9yLqarTz for ; Fri, 11 Jul 2014 04:20:34 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id DC8D41B2863 for ; Fri, 11 Jul 2014 04:20:33 -0700 (PDT) Received: from [192.168.0.106] (81-229-83-119-no65.business.telia.com [81.229.83.119]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 331841802B19; Fri, 11 Jul 2014 13:20:32 +0200 (CEST) Message-ID: <53BFC884.1000105@pi.nu> Date: Fri, 11 Jul 2014 13:20:36 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: weiqiang cheng , liu.guoman@zte.com.cn References: In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/IZOMyi3iilIxuaK5d4oG5x-_eqM Cc: "mpls@ietf.org" , "draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org" Subject: Re: [mpls] =?utf-8?b?562U5aSNOiAgW01QTFNdIEFueSBjb21tZW50cyBvbiB0aGUg?= =?utf-8?q?draft_of_MPLS-TP_Shared-Ring_protection_=28MSRP=29_mechanism_fo?= =?utf-8?q?r_ring_topology=E2=80=9D_=3F?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Jul 2014 11:20:37 -0000 Weiqiang, RFC 7271 took great care to make the PSC and APS identical from an operational point of view; does this mean that PSC (RFC 7271) could be used also? /Loa On 2014-07-11 11:03, weiqiang cheng wrote: > Hi Guoman, > > The "APS" should be "RPS" Ring Protection Switching, and It is > a clerical error. So sorry to make you confused. We will modify it in > late version. > Thanks a lot. > > B.R. > Weiqiang Cheng > > > 2014-07-11 14:51 GMT+08:00 >: > > hi, weiqiang > I have just reviewed this draft and a question for clause 3 > coordination protocol > it seem to have two types protocol , one is RPS protocol in clause > 3.1. another is APS protocol in clause 3.2. > is it necessary to use the two types of protocol in the mpls-tp > ring protection? > I think the answer is "no". how about it？ > > thank you ! > > B.R. > liu > > > > > *weiqiang cheng >* > å‘件人: "mpls" > > > 2014-07-09 18:41 > > > 收件人 > "mpls@ietf.org " >, > æŠ„é€ > "draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org > " > > > 主题 > [mpls] [MPLS] Any comments on the draft of MPLS-TP Shared-Ring > protection (MSRP) mechanism for ring topology†? > > > > > > > > > Hi There, > We uploaded the new version draft “MPLS-TP Shared-Ring protection > (MSRP) mechanism for ring topology†> _https://datatracker.ietf.org/doc/draft-cheng-mpls-tp-shared-ring-protection/_ > > We authors would like to see comments on this draft. Please help to > review it and It would be highly appreciated to send your comments > on the mailing list. > > Thanks, > Weiqiang Cheng_______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > > > > -------------------------------------------------------- > ZTE Information Security Notice: The information contained in this mail (and any attachment transmitted herewith) is privileged and confidential and is intended for the exclusive use of the addressee(s). If you are not an intended recipient, any disclosure, reproduction, distribution or other dissemination or use of the information contained is strictly prohibited. If you have received this mail in error, please delete it and notify us immediately. > > > > > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Fri Jul 11 10:10:20 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 996701B2B63 for ; Fri, 11 Jul 2014 10:10:06 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.551 X-Spam-Level: X-Spam-Status: No, score=-2.551 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.651] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id O3eez2c840Kx for ; Fri, 11 Jul 2014 10:09:59 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 79AEE1B2BBF for ; Fri, 11 Jul 2014 10:09:59 -0700 (PDT) Received: from [192.168.1.216] (81-236-221-144-no93.tbcn.telia.com [81.236.221.144]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 3D72418013DA; Fri, 11 Jul 2014 19:09:58 +0200 (CEST) Message-ID: <53C01A61.5090406@pi.nu> Date: Fri, 11 Jul 2014 19:09:53 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , Martin Vigoureux , draft-ietf-mpls-pim-sm-over-mldp@tools.ietf.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/3IwDNL-tW8msuSi4r1-WeAMMM5A Subject: [mpls] IPR Poll on draft-ietf-mpls-pim-sm-over-mldp X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Jul 2014 17:10:07 -0000 Working Group, The authors of draft-ietf-mpls-pim-sm-over-mldp has told the wg chairs that it is time to start the working group last call on this draft. We will do so shortly, we will start the IPR poll first and follow up with the wglc. This mail starts that IPR poll. Are you aware of any IPR that applies to draft-ietf-mpls-mldp-node- protection? If so, has this IPR been disclosed in compliance with IETF IPR rules (see RFCs 3979, 4879, 3669 and 5378 for more details). Currently there are two IPR disclosures that relates to this document. If you are listed as a document author or contributor please respond to this email regardless of whether or not you are aware of any relevant IPR. *The response needs to be sent to the MPLS wg mailing list.* The document will not advance to the next stage until a response has been received from each author and contributor. If you are on the MPLS WG email list but are not listed as an author or contributor, then please explicitly respond only if you are aware of any IPR that has not yet been disclosed in conformance with IETF rules. Thanks, Loa (as MPLS WG co-chair) -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Fri Jul 11 10:21:01 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id CE0961A0AEE for ; Fri, 11 Jul 2014 10:20:58 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.602 X-Spam-Level: X-Spam-Status: No, score=-2.602 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id yWdirnJC1RS7 for ; Fri, 11 Jul 2014 10:20:56 -0700 (PDT) Received: from na01-by2-obe.outbound.protection.outlook.com (mail-by2lp0242.outbound.protection.outlook.com [207.46.163.242]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 4CC361A0AC1 for ; Fri, 11 Jul 2014 10:20:56 -0700 (PDT) Received: from CO1PR05MB457.namprd05.prod.outlook.com (10.141.72.141) by CO1PR05MB458.namprd05.prod.outlook.com (10.141.72.140) with Microsoft SMTP Server (TLS) id 15.0.980.8; Fri, 11 Jul 2014 17:20:54 +0000 Received: from CO1PR05MB457.namprd05.prod.outlook.com ([169.254.4.112]) by CO1PR05MB457.namprd05.prod.outlook.com ([169.254.4.112]) with mapi id 15.00.0980.000; Fri, 11 Jul 2014 17:20:53 +0000 From: Ravi Singh To: "Nobo Akiya (nobo)" , "draft-ravisingh-mpls-el-for-seamless-mpls@tools.ietf.org" Thread-Topic: Comments on draft-ravisingh-mpls-el-for-seamless-mpls Thread-Index: Ac7bkJ2xL0omkkvnRZ2jAuXiLdjyFTBm3teA Date: Fri, 11 Jul 2014 17:20:52 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [66.129.239.11] x-microsoft-antispam: BCL:0;PCL:0;RULEID: x-forefront-prvs: 02698DF457 x-forefront-antispam-report: SFV:NSPM; SFS:(6009001)(13464003)(51704005)(199002)(189002)(377454003)(87936001)(85852003)(95666004)(106356001)(77982001)(76482001)(101416001)(561944003)(86362001)(85306003)(19580405001)(4396001)(92566001)(15975445006)(21056001)(83072002)(83322001)(15202345003)(105586002)(79102001)(76576001)(2656002)(107046002)(99286002)(81342001)(80022001)(66066001)(77096002)(64706001)(74316001)(46102001)(20776003)(81542001)(54356999)(33646001)(76176999)(74662001)(19580395003)(99396002)(74502001)(31966008)(50986999)(108616002)(24736002); DIR:OUT; SFP:; SCL:1; SRVR:CO1PR05MB458; H:CO1PR05MB457.namprd05.prod.outlook.com; FPR:; MLV:sfv; PTR:InfoNoRecords; MX:1; LANG:en; Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: juniper.net Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/CrNRAfbYSQwZkYo3JunBflByp30 Cc: "mpls@ietf.org" Subject: Re: [mpls] Comments on draft-ravisingh-mpls-el-for-seamless-mpls X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Jul 2014 17:20:59 -0000 Hi Nobo We have a new version of this draft: http://tools.ietf.org/html/draft-ravisingh-mpls-el-for-seamless-mpls-02 > -----Original Message----- > From: mpls-bounces@ietf.org [mailto:mpls-bounces@ietf.org] On Behalf Of > Nobo Akiya (nobo) > Sent: Thursday, November 07, 2013 12:23 AM > To: draft-ravisingh-mpls-el-for-seamless-mpls@tools.ietf.org > Cc: mpls@ietf.org > Subject: [mpls] Comments on draft-ravisingh-mpls-el-for-seamless-mpls >=20 > Hi Ravi, Yimin, >=20 > I have couple of comments. >=20 > 1. Stitched LSP - Proposed really offers optimization in stitched > scenario. >=20 > a. Allows EL usage for even wider than just EL capable segments. > b. Potentially speeds data traversal over stitched LSP as number of > times ELI/EL popped/pushed are reduced. >=20 > Document sort of eludes to this, but I think it'll be beneficial to > state that things will work as is (RFC6790), but proposal can be used > as optimization. The optimization aspect has been called out in the latest version. > 2. Hierarchical LSP >=20 > > B. Preventing multiple (ELI+EL) pairs underneath a given forwarding > > label in the stack: >=20 > I highly support above statement. Having multiple ELs in the stack > will, yet again, cause more changes required in LSP traceroute wrt > multipath information handling, and requires even more complex > computation by initiator to traverse ECMP paths. Great that we are in agreement. Ravi > -Nobo >=20 > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls >=20 From nobody Fri Jul 11 10:27:03 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 42D421B2BF4 for ; Fri, 11 Jul 2014 10:26:59 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.602 X-Spam-Level: X-Spam-Status: No, score=-2.602 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tTGM0TPCV83k for ; Fri, 11 Jul 2014 10:26:57 -0700 (PDT) Received: from na01-bl2-obe.outbound.protection.outlook.com (mail-bl2lp0206.outbound.protection.outlook.com [207.46.163.206]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id AFDF71B2BEF for ; Fri, 11 Jul 2014 10:26:55 -0700 (PDT) Received: from BY2PR05MB727.namprd05.prod.outlook.com (10.141.223.23) by BY2PR05MB645.namprd05.prod.outlook.com (10.141.217.148) with Microsoft SMTP Server (TLS) id 15.0.980.8; Fri, 11 Jul 2014 17:26:47 +0000 Received: from CO1PR05MB457.namprd05.prod.outlook.com (10.141.72.141) by BY2PR05MB727.namprd05.prod.outlook.com (10.141.223.23) with Microsoft SMTP Server (TLS) id 15.0.985.8; Fri, 11 Jul 2014 17:26:46 +0000 Received: from CO1PR05MB457.namprd05.prod.outlook.com ([169.254.4.112]) by CO1PR05MB457.namprd05.prod.outlook.com ([169.254.4.112]) with mapi id 15.00.0980.000; Fri, 11 Jul 2014 17:26:46 +0000 From: Ravi Singh To: "curtis@ipv6.occnc.com" , "Nobo Akiya (nobo)" , "draft-ravisingh-mpls-el-for-seamless-mpls@tools.ietf.org" Thread-Topic: Comments on draft-ravisingh-mpls-el-for-seamless-mpls Thread-Index: Ac7bkJ2xL0omkkvnRZ2jAuXiLdjyFTBm3teAAAA4nqA= Date: Fri, 11 Jul 2014 17:26:46 +0000 Message-ID: <779cdb00cc0643aa954a3ef174b95dd7@CO1PR05MB457.namprd05.prod.outlook.com> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [66.129.239.11] x-microsoft-antispam: BCL:0;PCL:0;RULEID: x-forefront-prvs: 02698DF457 x-forefront-antispam-report: SFV:NSPM; SFS:(6009001)(199002)(377454003)(13464003)(189002)(51704005)(64706001)(107046002)(74502001)(106356001)(20776003)(87936001)(2656002)(46102001)(79102001)(99286002)(99396002)(92566001)(33646001)(95666004)(31966008)(77096002)(80022001)(15975445006)(15202345003)(101416001)(66066001)(85852003)(74662001)(19580395003)(561944003)(19580405001)(50986999)(21056001)(86362001)(85306003)(4396001)(76482001)(76176999)(83322001)(54356999)(81342001)(83072002)(81542001)(105586002)(74316001)(76576001)(77982001)(108616002)(24736002); DIR:OUT; SFP:; SCL:1; SRVR:BY2PR05MB727; H:CO1PR05MB457.namprd05.prod.outlook.com; FPR:; MLV:sfv; PTR:InfoNoRecords; MX:1; LANG:en; Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Microsoft-Antispam: BCL:0;PCL:0;RULEID: X-OriginatorOrg: juniper.net Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/Om_J6o-VPiYV9s2239yS-gjG5xA Cc: "mpls@ietf.org" Subject: Re: [mpls] Comments on draft-ravisingh-mpls-el-for-seamless-mpls X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Jul 2014 17:26:59 -0000 Hi Curtis You've had comments on our usage of the term stitching in this draft. We've clarified the same (in the latest version) and now instead of referri= ng to the use-case as being "stitching" (as implied in the GMPLS case), we = now refer to it as concatenation of LSPs. Please refer the latest version and let me know if there are any further co= mments... Thanks Ravi > -----Original Message----- > From: Ravi Singh [mailto:ravis@juniper.net] > Sent: Friday, July 11, 2014 10:21 AM > To: Nobo Akiya (nobo); draft-ravisingh-mpls-el-for-seamless- > mpls@tools.ietf.org > Cc: mpls@ietf.org > Subject: RE: Comments on draft-ravisingh-mpls-el-for-seamless-mpls >=20 > Hi Nobo > We have a new version of this draft: > http://tools.ietf.org/html/draft-ravisingh-mpls-el-for-seamless- > mpls-02 >=20 >=20 > > -----Original Message----- > > From: mpls-bounces@ietf.org [mailto:mpls-bounces@ietf.org] On Behalf > Of > > Nobo Akiya (nobo) > > Sent: Thursday, November 07, 2013 12:23 AM > > To: draft-ravisingh-mpls-el-for-seamless-mpls@tools.ietf.org > > Cc: mpls@ietf.org > > Subject: [mpls] Comments on draft-ravisingh-mpls-el-for-seamless-mpls > > > > Hi Ravi, Yimin, > > > > I have couple of comments. > > > > 1. Stitched LSP - Proposed really offers optimization in stitched > > scenario. > > > > a. Allows EL usage for even wider than just EL capable segments. > > b. Potentially speeds data traversal over stitched LSP as number of > > times ELI/EL popped/pushed are reduced. > > > > Document sort of eludes to this, but I think it'll be beneficial to > > state that things will work as is (RFC6790), but proposal can be used > > as optimization. >=20 > The optimization aspect has been called out in the latest version. >=20 >=20 > > 2. Hierarchical LSP > > > > > B. Preventing multiple (ELI+EL) pairs underneath a given > forwarding > > > label in the stack: > > > > I highly support above statement. Having multiple ELs in the stack > > will, yet again, cause more changes required in LSP traceroute wrt > > multipath information handling, and requires even more complex > > computation by initiator to traverse ECMP paths. >=20 > Great that we are in agreement. > Ravi >=20 >=20 >=20 > > -Nobo > > > > _______________________________________________ > > mpls mailing list > > mpls@ietf.org > > https://www.ietf.org/mailman/listinfo/mpls > > From nobody Fri Jul 11 10:29:01 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D60BD1B297C for ; Fri, 11 Jul 2014 10:28:55 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.399 X-Spam-Level: X-Spam-Status: No, score=-1.399 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, J_CHICKENPOX_31=0.6, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id u7plVbKbQL6K for ; Fri, 11 Jul 2014 10:28:53 -0700 (PDT) Received: from mail-pa0-x235.google.com (mail-pa0-x235.google.com [IPv6:2607:f8b0:400e:c03::235]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 699841B2973 for ; Fri, 11 Jul 2014 10:28:53 -0700 (PDT) Received: by mail-pa0-f53.google.com with SMTP id ey11so1826263pad.12 for ; Fri, 11 Jul 2014 10:28:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=content-type:mime-version:subject:from:in-reply-to:date:cc :message-id:references:to; bh=+ngjrRRQCk2YGhlotRjx0ceFnaTx1/Hw7hYfGNWETTU=; b=jgaRR0HAkoP6s8m5iNxrk792sS0wgrH7PfJi8pMlVJTvkp1agLKT6ZMyIZ58+i28mk gnv0dEvd/1KpS04NM0CCbHBFX9JuiEPcLO0NWVyrULhL2F7b7i+mgut86FZWsaVw/Az3 HOK7er/dD7cmGAJrwrg546OTxdOGirGZXM1GI38Bt/kzXD/bC8GCsrC1HYnqPkqEU0Ag L84MAPQyCPauGLaRweVWGFWK8ak7+XvRSXZcx4XOZbfIeLASjsGhPN92ts6K6SoeN3sP pNQj8Ui6kofZB3euGx8e9PQOE0MR3jqorssjDN45NLgbdwqdoD3Y3QKCKOKVI0zMWl0t usjA== X-Received: by 10.66.232.166 with SMTP id tp6mr88717pac.127.1405099733108; Fri, 11 Jul 2014 10:28:53 -0700 (PDT) Received: from [192.168.1.2] (c-107-3-154-60.hsd1.ca.comcast.net. [107.3.154.60]) by mx.google.com with ESMTPSA id kh7sm11583319pad.8.2014.07.11.10.28.51 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 11 Jul 2014 10:28:52 -0700 (PDT) Content-Type: multipart/alternative; boundary="Apple-Mail=_5897540B-12D9-4722-A624-0AB25A61DFB9" Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) From: Sam Aldrin In-Reply-To: Date: Fri, 11 Jul 2014 10:28:52 -0700 Message-Id: References: <20140613210400.13388.18750.idtracker@ietfa.amsl.com> <10150BDE-17FD-43D0-9DE4-6E0CAAF3BD5E@gmail.com> To: "Nobo Akiya (nobo)" X-Mailer: Apple Mail (2.1878.6) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/M64iromN3oqsbuH-X7kxi-BS2Tk Cc: "mpls@ietf.org" Subject: Re: [mpls] New Version Notification for draft-akiya-mpls-lsp-ping-lag-multipath-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Jul 2014 17:28:56 -0000 --Apple-Mail=_5897540B-12D9-4722-A624-0AB25A61DFB9 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Hi Nobo, Few comments inline. On Jul 10, 2014, at 4:44 PM, Nobo Akiya (nobo) wrote: > Hi Sam, >=20 >> -----Original Message----- >> From: Sam Aldrin [mailto:aldrin.ietf@gmail.com] >> Sent: Thursday, July 10, 2014 5:56 PM >> To: Nobo Akiya (nobo) >> Cc: mpls@ietf.org >> Subject: Re: [mpls] New Version Notification for = draft-akiya-mpls-lsp-ping- >> lag-multipath-00.txt >>=20 >> Hi Nobo, >>=20 >> Thanks for the reply. Provides better clarity now. >=20 > I'm very glad to hear that, and thanks again for many comments! >=20 > Also, I'm glad you didn't ask all of these questions at the mic :) >=20 >> Inline for few of my comments. >>=20 >> On Thu, Jul 10, 2014 at 2:39 PM, Nobo Akiya (nobo) >> wrote: >> Hi Sam, >>=20 >>> Hi Nobo, >>>=20 >>> Thanks for the responses. >>> Snipped out things so as not to bloat the discussion. >>> I could review draft when you add those changes. >>> For now, have some points which I feel are more imp :D Hope you = don't >>> mind. >> No problem, thanks for continued discussions! >>=20 >>>>=20 >>>>> =46rom high level, this addition will help discover various LAG = members >>>>> associated with the data path of an LSP. But I think it is = difficult >>>>> to validate against a given FEC. Because the DDMAP info of LAG >> member >>>>> sent cannot be validated. If it is indeed could be validated, = should be >>> documented in the ID. >>>>=20 >>>> Good point. I think Section 4 (Mechanism to Validate L2 ECMP = Traversal) >>> can use more texts to describe the what can be validated. How about = we >>> make some changes in the Section 4 (Mechanism to Validate L2 ECMP >>> Traversal). >>>>=20 >>>> [old] >>>> Described procedures allow initiating LSR to know: >>>>=20 >>>> o The expected load balance information of every LAG member = link, at >>>> LSR with TTL=3Dn. >>>>=20 >>>> o The actual incoming interface at LSR with TTL=3Dn+1, including = the >>>> interface index of LAG member link if incoming interface is a = LAG >>>> interface. >>>>=20 >>>> [new] >>>> Described procedures allow initiating LSR to know: >>>>=20 >>>> o The expected load balance information of every LAG member = link, at >>>> LSR with TTL=3Dn. >>>>=20 >>>> o With specific entropy, the expected interface index of the >>>> outgoing LAG member link at TTL=3Dn. >>>>=20 >>>> o With specific entropy, the interface index of the incoming LAG >>>> member link at TTL=3Dn+1. >>>>=20 >>>> Expectation is that there's a relationship between the interface >>>> index of the outgoing LAG member link at TTL=3Dn and the = interface >>>> index of the incoming LAG member link at TTL=3Dn+1 for all = discovered >>>> entropies. In other words, set of entropies that load balances = to >>>> outgoing LAG member link X at TTL=3Dn should all reach the = nexthop on >>>> same incoming LAG member link Y at TTL=3Dn+1. >>> I think this is very important, for the reasons below. >>> 1. How does one know same LAG bundle originates at TTL=3Dn = terminates at >>> TTL=3Dn+1. I am talking from discovery/treetrace/someother side? = Both >> TTL=3Dn >>> and TTL=3Dn+1 could tell it is LAG but doesn't mean that is 1:1 >> correspondence >>> per link/link member. >> If the LAG is back to back connected, then the LAG should have LAG = member >> links that are 1:1. What we are providing here is a way for the = initiator to >> traverse each LAG member and to allow the initiator perform some = sanity >> check on this 1:1. >> %sam - Idea is noble. The only problem is, when you check at TTL=3Dn+1,= you >> do not know whether to expect from LAG member =3D1 or 2 or something. >> Hence, the question. >=20 > Yes these are good questions. What we do know is that if: > - traversing LAG member=3D1 at TTL=3Dn will result in LAG member=3D1' = as the incoming interface at TTL=3Dn+1. > - traversing LAG member=3D2 at TTL=3Dn will result in LAG member=3D2' = as the incoming interface at TTL=3Dn+1. >=20 > The error is detected when: > - traversing LAG member=3D1 at TTL=3Dn will result in LAG member=3D1' = as the incoming interface at TTL=3Dn+1. > - traversing LAG member=3D2 at TTL=3Dn will result in LAG member=3D1' = as the incoming interface at TTL=3Dn+1. >=20 > So it's all up to the initiating LSR to add logic to verify this.=20 So, the validation is pretty much offline and not built into the OAM = packets and initiator has to know topology etc via offline means and = specifically whether the links traverse switches or not. >=20 >>=20 >>> IOW, how does sec #3 be performed for the scenario described in last >>> paragraph in sec #4? Better yet, how does one know not to perform if = any? >> This document is providing a way for the initiator to obtain more >> information from downstream LSRs having LAG as outgoing/incoming >> interfaces. What the initiator can do with collected information is a = bit of an >> implementation matter, which is why above suggested text only = described >> that at high level. >> %sam - If it is purely for the purpose of knowing a LAG interface = exisits and >> to indicate packet ingress/egress is that interface, I have no = problem. But >> that multipath info for each member is the itch. ;-) >=20 > Yes it's itchy but necessary, as we need to deterministically traverse = each LAG member in the MPLS layer, hence the need for multipath. Itchiness is not because of the info, rather, this is applicable only = for a specific topology, which cannot be discovered for validation, via = inline means. Ofcourse that doesn't diminish the value. >=20 > The primary goal here is to ensure we have a necessary OAM tool to = mitigate traffic black hole in MPLS networks, and I'm afraid this is a = necessary (or very very beneficial) change. OAM is meant for that :D >=20 >>=20 >>> 2. Let us take this scenario, I receive DDMAP at TTL=3Dn with = various LAG >>> interface+members and their multipath info. I send TTL=3Dn+1 with a = chosen >>> LAG interface and multi path info. At TTL=3Dn+1, what am I going to = validate? >> DDMAP validation procedures are not updated by this document. = However, >> this document should have described how the initiator updates the = DDMAP >> received back from TTL=3Dn before sending the DDMAP to TTL=3Dn+1. If = it's >> indeed this missing information that's generating some questions, I = do >> apologize. Let me plan to add some texts on this. >> %sam - NP. Will wait for next version. >=20 > Thanks to you and Nagendra, numbers of beneficial changes were = suggested. I should have a revision ready in couple of days, but you'll = need to wait until the gate is open again for its publication. If you = want to take an early look, drop me a line. No time to review before the mtg. Sorry. >=20 >>=20 >>> For the FEC validation and interface validation, I need to check for = specific >>> information, in this case the LAG member. My understanding is, = unlike >> load >>> balanced interfaces, if LAG member is not pinned to specific LSP, = the even >> if >>> one member link fails, it load balances over other member link, = because >>> MPLS will only see it as single interface from LIB point of view, = no? >> Again DDMAP validation procedures are not updated by this document, = let >> me be clear on this point in the next revision as well. >>=20 >>> 3. If the LAG member info be only used to indicate that there is LAG = but >> NOT >>> for validation, then text should be added to describe that. = Especially on >> how >>> FEC interface and label validation is done. >> True, I will add that LAG intf info TLV is not used for any FEC = validation >> purpose. >>=20 >>> 4. As you said, if a LAG member is pinned to a specific LSP, then we = will be >>> using a separate DSMAP/DDMAP anyway. If so, could explain the = benefit >> of >>> LAG with multi path info really used for? In other words, how much >>> beneficial compared to BFD over LAG? >> There are things like LACP and BFD on LAG which is intended to verify = the >> L1/L2/L3 functionality of each LAG member. However, the missing (and >> important) piece is that when there are in/out label corruption (i.e. >> inconsistencies between control plane and data plane) that only = affects >> subset (one or more) of the LAG member links, then there is nothing = that >> can deterministically test this at the MPLS layer. >>=20 >>> 5. When do you consider a LAG member has failed and how do you >> indicate >>> or inform the requestor? >> No DDMAP validation changes, it's up to the initiator to gather and = compare >> the information. >> %sam - So, does that mean the status reported is per bundled = interface and >> not per Link member? >=20 > DDMAP is still per LAG, but some Sub-TLVs (multipath info and = interface index) are per LAG member link. nod. -sam >=20 > Thanks! >=20 > -Nobo >=20 >>=20 >> -sam >>=20 >> Thanks! >>=20 >> -Nobo --Apple-Mail=_5897540B-12D9-4722-A624-0AB25A61DFB9 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii Hi = Nobo,

Few comments inline.
On Jul 10, = 2014, at 4:44 PM, Nobo Akiya (nobo) <nobo@cisco.com> wrote:

Hi Sam,

-----Original Message-----
From: Sam Aldrin [mailto:aldrin.ietf@gmail.com]Sent: Thursday, July 10, 2014 5:56 PM
To: Nobo Akiya = (nobo)
Cc: mpls@ietf.org
Subject: Re: [mpls] = New Version Notification for = draft-akiya-mpls-lsp-ping-
lag-multipath-00.txt

Hi = Nobo,

Thanks for the reply. Provides better clarity = now.

I'm very glad to hear that, and thanks again = for many comments!

Also, I'm glad you didn't ask all of these = questions at the mic :)

Inline for few = of my comments.

On Thu, Jul 10, 2014 at 2:39 PM, Nobo Akiya = (nobo) <nobo@cisco.com>
wrote:
Hi = Sam,

Hi Nobo,

Thanks for the = responses.
Snipped out things so as not to bloat the discussion.
I = could review draft when you add those changes.
For now, have some = points which I feel are more imp :D Hope you = don't
mind.
No problem, thanks for continued = discussions!


=46rom high level, this = addition will help discover various LAG members
associated with the = data path of an LSP. But I think it is difficult
to validate against = a given FEC. Because the DDMAP info of = LAG
member
sent = cannot be validated. If it is indeed could be validated, should = be
documented in the ID.

Good point. I think Section 4 (Mechanism to Validate = L2 ECMP Traversal)
can use more texts to describe the = what can be validated. How about we
make some changes in the Section = 4 (Mechanism to Validate L2 ECMP
Traversal).

[old]
  Described procedures allow = initiating LSR to know:

  o  The expected load = balance information of every LAG member link, at
    =  LSR with TTL=3Dn.

  o  The actual incoming = interface at LSR with TTL=3Dn+1, including the
    =  interface index of LAG member link if incoming interface is a = LAG
     interface.

[new]
  Described procedures allow = initiating LSR to know:

  o  The expected load = balance information of every LAG member link, at
    =  LSR with TTL=3Dn.

  o  With specific = entropy, the expected interface index of the
    =  outgoing LAG member link at TTL=3Dn.

  o  With specific = entropy, the interface index of the incoming LAG
    =  member link at TTL=3Dn+1.

  Expectation is that there's = a relationship between the interface
  index of the outgoing LAG = member link at TTL=3Dn and the interface
  index of the incoming LAG = member link at TTL=3Dn+1 for all discovered
  entropies.  In other = words, set of entropies that load balances to
  outgoing LAG member link X = at TTL=3Dn should all reach the nexthop on
  same incoming LAG member = link Y at TTL=3Dn+1.
I think this is very important, for = the reasons below.
1. How does one know same LAG bundle originates at = TTL=3Dn terminates at
TTL=3Dn+1. I am talking from = discovery/treetrace/someother side? = Both
TTL=3Dn
and TTL=3Dn+1 = could tell it is LAG but doesn't mean that is = 1:1
correspondence
per = link/link member.
If the LAG is back to back connected, = then the LAG should have LAG member
links that are 1:1. What we are = providing here is a way for the initiator to
traverse each LAG member = and to allow the initiator perform some sanity
check on this = 1:1.
%sam - Idea is noble. The only problem is, when you check at = TTL=3Dn+1, you
do not know whether to expect from LAG member =3D1 or = 2 or something.
Hence, the question.

Yes these = are good questions. What we do know is that if:
- traversing LAG = member=3D1 at TTL=3Dn will result in LAG member=3D1' as the incoming = interface at TTL=3Dn+1.
- traversing LAG member=3D2 at TTL=3Dn will = result in LAG member=3D2' as the incoming interface at = TTL=3Dn+1.

The error is detected when:
- traversing LAG = member=3D1 at TTL=3Dn will result in LAG member=3D1' as the incoming = interface at TTL=3Dn+1.
- traversing LAG member=3D2 at TTL=3Dn will = result in LAG member=3D1' as the incoming interface at = TTL=3Dn+1.

So it's all up to the initiating LSR to add logic to = verify this. 
So, the validation is pretty = much offline and not built into the OAM packets and initiator has to = know topology etc via offline means and specifically whether the links = traverse switches or not.


IOW, how does sec #3 be = performed for the scenario described in last
paragraph in sec #4? = Better yet, how does one know not to perform if = any?
This document is providing a way for the initiator = to obtain more
information from downstream LSRs having LAG as = outgoing/incoming
interfaces. What the initiator can do with = collected information is a bit of an
implementation matter, which is = why above suggested text only described
that at high level.
%sam - = If it is purely for the purpose of knowing a LAG interface exisits = and
to indicate packet ingress/egress is that interface, I have no = problem. But
that multipath info for each member is the itch. = ;-)

Yes it's itchy but necessary, as we need to = deterministically traverse each LAG member in the MPLS layer, hence the = need for multipath.
Itchiness is not because of = the info, rather, this is applicable only for a specific topology, which = cannot be discovered for validation, via inline means. Ofcourse that = doesn't diminish the value.

The primary goal here is to ensure = we have a necessary OAM tool to mitigate traffic black hole in MPLS = networks, and I'm afraid this is a necessary (or very very beneficial) = change.
OAM is meant for that :D


2. Let us take this = scenario,  I receive DDMAP at TTL=3Dn with various = LAG
interface+members and their multipath info. I send TTL=3Dn+1 with = a chosen
LAG interface and multi path info. At TTL=3Dn+1, what am I = going to validate?
DDMAP validation procedures are not = updated by this document. However,
this document should have = described how the initiator updates the DDMAP
received back from = TTL=3Dn before sending the DDMAP to TTL=3Dn+1. If it's
indeed this = missing information that's generating some questions, I do
apologize. = Let me plan to add some texts on this.
%sam - NP. Will wait for next = version.

Thanks to you and Nagendra, numbers of = beneficial changes were suggested. I should have a revision ready in = couple of days, but you'll need to wait until the gate is open again for = its publication. If you want to take an early look, drop me a = line.
No time to review before the mtg. = Sorry.


For = the FEC validation and interface validation, I need to check for = specific
information, in this case the LAG member. My understanding = is, unlike
load
balanced = interfaces, if LAG member is not pinned to specific LSP, the = even
if
one member link = fails, it load balances over other member link, because
MPLS will = only see it as single interface from LIB point of view, = no?
Again DDMAP validation procedures are not updated by = this document, let
me be clear on this point in the next revision as = well.

3. If the LAG member info be only = used to indicate that there is LAG = but
NOT
for validation, = then text should be added to describe that. Especially = on
how
FEC interface and = label validation is done.
True, I will add that LAG intf = info TLV is not used for any FEC = validation
purpose.

4. As you said, = if a LAG member is pinned to a specific LSP, then we will be
using a = separate DSMAP/DDMAP anyway. If so, could explain the = benefit
of
LAG with multi = path info really used for? In other words, how much
beneficial = compared to BFD over LAG?
There are things like LACP and = BFD on LAG which is intended to verify the
L1/L2/L3 functionality of = each LAG member. However, the missing (and
important) piece is that = when there are in/out label corruption (i.e.
inconsistencies between = control plane and data plane) that only affects
subset (one or more) = of the LAG member links, then there is nothing that
can = deterministically test this at the MPLS layer.

5. When do you consider a LAG member has failed and how do = you
indicate
or inform the = requestor?
No DDMAP validation changes, it's up to the = initiator to gather and compare
the information.
%sam - So, does = that mean the status reported is per bundled interface and
not per = Link member?

DDMAP is still per LAG, but some = Sub-TLVs (multipath info and interface index) are per LAG member = link.
nod.

-sam

Thanks!

-Nobo


-sam

Thanks!

-Nobo

= --Apple-Mail=_5897540B-12D9-4722-A624-0AB25A61DFB9-- From nobody Fri Jul 11 11:24:45 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 901671B2898 for ; Fri, 11 Jul 2014 11:24:44 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.551 X-Spam-Level: X-Spam-Status: No, score=-2.551 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.651] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 5jvOMshJlFOX for ; Fri, 11 Jul 2014 11:24:43 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 46E9B1A0ABB for ; Fri, 11 Jul 2014 11:24:43 -0700 (PDT) Received: from [192.168.1.216] (81-236-221-144-no93.tbcn.telia.com [81.236.221.144]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id EFA7E18013DA; Fri, 11 Jul 2014 20:24:41 +0200 (CEST) Message-ID: <53C02BE4.2010902@pi.nu> Date: Fri, 11 Jul 2014 20:24:36 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , Martin Vigoureux , draft-ietf-mpls-pim-sm-over-mldp@tools.ietf.org References: <53C01A61.5090406@pi.nu> In-Reply-To: <53C01A61.5090406@pi.nu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/PYUShIto0Xo-KHF0zQItSL9_jNw Subject: [mpls] Correction - IPR Poll on draft-ietf-mpls-pim-sm-over-mldp X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Jul 2014 18:24:44 -0000 Working group, I made a "copy - paste" mistake when I started this IPR poll. The correct text should be: The authors of draft-ietf-mpls-pim-sm-over-mldp has told the wg chairs that it is time to start the working group last call on this draft. We will do so shortly, we will start the IPR poll first and follow up with the wglc. This mail starts that IPR poll. Are you aware of any IPR that applies to draft-ietf-mpls-pim-sm- over-mldp? If so, has this IPR been disclosed in compliance with IETF IPR rules (see RFCs 3979, 4879, 3669 and 5378 for more details). Currently there are one IPR disclosures that relates to this document. If you are listed as a document author or contributor please respond to this email regardless of whether or not you are aware of any relevant IPR. *The response needs to be sent to the MPLS wg mailing list.* The document will not advance to the next stage until a response has been received from each author and contributor. If you are on the MPLS WG email list but are not listed as an author or contributor, then please explicitly respond only if you are aware of any IPR that has not yet been disclosed in conformance with IETF rules. Thanks, Loa (as MPLS WG co-chair) On 2014-07-11 19:09, Loa Andersson wrote: > Working Group, > > The authors of draft-ietf-mpls-pim-sm-over-mldp has told the wg chairs > that it is time to start the working group last call on this draft. > > We will do so shortly, we will start the IPR poll first and follow up > with the wglc. > > This mail starts that IPR poll. > > Are you aware of any IPR that applies to draft-ietf-mpls-mldp-node- > protection? > > If so, has this IPR been disclosed in compliance with IETF IPR rules > (see RFCs 3979, 4879, 3669 and 5378 for more details). > > Currently there are two IPR disclosures that relates to this document. > > If you are listed as a document author or contributor please respond to > this email regardless of whether or not you are aware of any relevant > IPR. *The response needs to be sent to the MPLS wg mailing list.* The > document will not advance to the next stage until a response has been > received from each author and contributor. > > If you are on the MPLS WG email list but are not listed as an author or > contributor, then please explicitly respond only if you are aware of any > IPR that has not yet been disclosed in conformance with IETF rules. > > Thanks, Loa > (as MPLS WG co-chair) > From nobody Fri Jul 11 11:43:26 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D18481A0AFE for ; Fri, 11 Jul 2014 11:43:25 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.902 X-Spam-Level: X-Spam-Status: No, score=-1.902 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id TyOaKFSkgDqX for ; Fri, 11 Jul 2014 11:43:23 -0700 (PDT) Received: from na01-bn1-obe.outbound.protection.outlook.com (mail-bn1lp0144.outbound.protection.outlook.com [207.46.163.144]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 94E051A0365 for ; Fri, 11 Jul 2014 11:43:23 -0700 (PDT) Received: from BY2PR05CA016.namprd05.prod.outlook.com (10.141.216.26) by BN3PR0501MB1203.namprd05.prod.outlook.com (25.160.113.23) with Microsoft SMTP Server (TLS) id 15.0.985.8; Fri, 11 Jul 2014 18:43:21 +0000 Received: from BL2FFO11FD052.protection.gbl (2a01:111:f400:7c09::108) by BY2PR05CA016.outlook.office365.com (2a01:111:e400:2c40::26) with Microsoft SMTP Server (TLS) id 15.0.985.8 via Frontend Transport; Fri, 11 Jul 2014 18:43:20 +0000 Received: from P-EMF02-SAC.jnpr.net (66.129.239.16) by BL2FFO11FD052.mail.protection.outlook.com (10.173.161.214) with Microsoft SMTP Server (TLS) id 15.0.980.11 via Frontend Transport; Fri, 11 Jul 2014 18:43:20 +0000 Received: from magenta.juniper.net (172.17.27.123) by P-EMF02-SAC.jnpr.net (172.24.192.21) with Microsoft SMTP Server (TLS) id 14.3.146.0; Fri, 11 Jul 2014 11:43:15 -0700 Received: from juniper.net (sapphire.juniper.net [172.17.28.108]) by magenta.juniper.net (8.11.3/8.11.3) with ESMTP id s6BIhEn10223; Fri, 11 Jul 2014 11:43:14 -0700 (PDT) (envelope-from yakov@juniper.net) Message-ID: <201407111843.s6BIhEn10223@magenta.juniper.net> To: Loa Andersson In-Reply-To: <53C02BE4.2010902@pi.nu> References: <53C01A61.5090406@pi.nu> <53C02BE4.2010902@pi.nu> X-MH-In-Reply-To: Loa Andersson message dated "Fri, 11 Jul 2014 20:24:36 +0200." MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <25089.1405104193.1@juniper.net> Date: Fri, 11 Jul 2014 11:43:14 -0700 From: Yakov Rekhter X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:66.129.239.16; CTRY:US; IPV:NLI; IPV:NLI; EFV:NLI; SFV:NSPM; SFS:(6009001)(51704005)(199002)(189002)(106466001)(4396001)(81542001)(79102001)(81342001)(92726001)(105596002)(99396002)(87936001)(102836001)(16796002)(15975445006)(64706001)(68736004)(95666004)(21056001)(81156004)(110136001)(85306003)(23726002)(86362001)(97736001)(47776003)(97756001)(46102001)(20776003)(85852003)(107046002)(83072002)(19580395003)(76482001)(80022001)(6806004)(83322001)(74662001)(76176999)(69596002)(46406003)(92566001)(74502001)(77982001)(44976005)(50466002)(54356999)(50986999)(84676001)(31966008); DIR:OUT; SFP:; SCL:1; SRVR:BN3PR0501MB1203; H:P-EMF02-SAC.jnpr.net; FPR:; MLV:sfv; PTR:InfoDomainNonexistent; MX:1; LANG:en; X-Microsoft-Antispam: BCL:0;PCL:0;RULEID: X-Forefront-PRVS: 02698DF457 Received-SPF: SoftFail (: domain of transitioning juniper.net discourages use of 66.129.239.16 as permitted sender) Authentication-Results: spf=softfail (sender IP is 66.129.239.16) smtp.mailfrom=yakov@juniper.net; X-OriginatorOrg: juniper.net Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/tGKiWSnMtJSVKPfp8Q2L1sbJd4A Cc: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , draft-ietf-mpls-pim-sm-over-mldp@tools.ietf.org Subject: Re: [mpls] Correction - IPR Poll on draft-ietf-mpls-pim-sm-over-mldp X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Jul 2014 18:43:26 -0000 Loa, > Working group, > > I made a "copy - paste" mistake when I started this IPR poll. The > correct text should be: > > The authors of draft-ietf-mpls-pim-sm-over-mldp has told the wg chairs > that it is time to start the working group last call on this draft. > > We will do so shortly, we will start the IPR poll first and follow up > with the wglc. > > This mail starts that IPR poll. > > Are you aware of any IPR that applies to draft-ietf-mpls-pim-sm- > over-mldp? I am aware of the following relevant IPR that is related to draft-ietf-mpls-pim-sm-over-mldp - https://datatracker.ietf.org/ipr/2189/ > If so, has this IPR been disclosed in compliance with IETF IPR rules > (see RFCs 3979, 4879, 3669 and 5378 for more details). Yes. > Currently there are one IPR disclosures that relates to this document. I think this is the one I mentioned above. Yakov. From nobody Fri Jul 11 12:10:18 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 01D1F1A0B02 for ; Fri, 11 Jul 2014 12:10:15 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.367 X-Spam-Level: X-Spam-Status: No, score=-1.367 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, IP_NOT_FRIENDLY=0.334, MIME_8BIT_HEADER=0.3, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Jxp06WmCGJyE for ; Fri, 11 Jul 2014 12:10:14 -0700 (PDT) Received: from gproxy8-pub.mail.unifiedlayer.com (gproxy8-pub.mail.unifiedlayer.com [67.222.33.93]) by ietfa.amsl.com (Postfix) with SMTP id D87EF1A0AEB for ; Fri, 11 Jul 2014 12:10:12 -0700 (PDT) Received: (qmail 11779 invoked by uid 0); 11 Jul 2014 19:10:10 -0000 Received: from unknown (HELO cmgw4) (10.0.90.85) by gproxy8.mail.unifiedlayer.com with SMTP; 11 Jul 2014 19:10:10 -0000 Received: from box313.bluehost.com ([69.89.31.113]) by cmgw4 with id RDA01o01T2SSUrH01DA3Sk; Fri, 11 Jul 2014 19:10:08 -0600 X-Authority-Analysis: v=2.1 cv=OcELUHjY c=1 sm=1 tr=0 a=h1BC+oY+fLhyFmnTBx92Jg==:117 a=ZSdzdHkL1-cA:10 a=zCehyBWSIz4A:10 a=HFCU6gKsb0MA:10 a=jPJDawAOAc8A:10 a=IkcTkHD0fZMA:10 a=wU2YTnxGAAAA:8 a=cNaOj0WVAAAA:8 a=-NfooI8aBGcA:10 a=uEJ9t1CZtbIA:10 a=XKRAzt7loxlGrBEaZkYA:9 a=QEXdDO2ut3YA:10 a=33rK67OTR_gA:10 a=Flg0Rsxmn5MA:10 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=labn.net; s=default; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:References:Subject:CC:To:MIME-Version:From:Date:Message-ID; bh=FuDokubYgHNNcktFSkueE4DTPGz6M7331E71WQS+Eqo=; b=Yv8V0DW5XmnFuqs8hZoAFlIYB0FmN+QZ4jaXUoeGJ9o1xoIVph2s+ET5mKoiU8QeXS+JAwoSSXg71XnZjelo1Ka+KeF1tnuv/EhCteeeLIcZAu3eIJ6MYQ8p33aeTUTP; Received: from box313.bluehost.com ([69.89.31.113]:60059 helo=[127.0.0.1]) by box313.bluehost.com with esmtpa (Exim 4.82) (envelope-from ) id 1X5gCo-000532-88; Fri, 11 Jul 2014 13:10:02 -0600 Message-ID: <53C03687.2000007@labn.net> Date: Fri, 11 Jul 2014 15:09:59 -0400 From: Lou Berger User-Agent: Mozilla/5.0 (X11; Linux i686; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: =?UTF-8?B?66WY7KCV64+Z?= References: <53A5ABED.9080408@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28748144@SMTP2.etri.info>, <53B8190E.6080505@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28749702@SMTP2.etri.info>, <53BE7F3B.9010005@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28749804@SMTP2.etri.info> In-Reply-To: <5B4A6CBE3924BB41A3BEE462A8E0B75A28749804@SMTP2.etri.info> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Identified-User: {1038:box313.bluehost.com:labnmobi:labn.net} {sentby:smtp auth 69.89.31.113 authed with lberger@labn.net} Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/nPxdgmYNC3W1uTbJB0V9GMKQLXg Cc: "rtg-dir@ietf.org" , "rtg-ads@tools.ietf.org" , "draft-ietf-mpls-smp-requirements.all@tools.ietf.org" , "mpls@ietf.org" Subject: Re: [mpls] =?utf-8?b?W1JURy1ESVJdIO2ajOyLoDog7ZqM7IugOiAgIFJ0Z0RpciBy?= =?utf-8?q?eview=3A_draft-ietf-mpls-smp-requirements-06=2Etxt?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Jul 2014 19:10:15 -0000 Thank you -- just one response and suggested change. Lou On 07/10/2014 09:43 AM, ë¥˜ì •ë™ wrote: > Lou, > > Thank you for agreeing on most of the suggestions. > Please, see the lines starting with [JR2] below. > > Best regards, > > Jeong-dong > > > ________________________________________ > 보낸 사람: Lou Berger [lberger@labn.net] ... >> This is fine, but I wonder why you are using "resource utilization" vs > "protection switch"? (this is actually a bit of a general comment -- I > the latter is an existing applicable term that would help readers how > this document fits in to the technology space.) >> >> [JR] As described in an earlier part of this section, SMP protection > consists of two operations: traffic switchover and resource utilization > coordination. The sentences are about the resource utilization > coordination, and “resource utilization†seems to be more accurate. > > Is "resource utilization coordination" done via some form of inter-node > coordination? If yes, then I think my comment holds. If no, then I > think you should elabotate on how the "coordination" in this case > differes from how you use "coordination" elsewhere in the document. > Either way, I think we've discussed this enough, i.e., I won't push this > point further. > > [JR2] "resource utilization coorination" occurs between the nodes as in other protection switching. "resource utilization coordination" is a part of whole SMP protection switching coordination and is meant to emphasize that coordination is for resource utilization. Of course, the reason why it does resource utilization coordination is to complete protection switching eventually. > Okay. I think adding something along the lines of ""resource utilization coordination" is a part of whole SMP protection switching coordination " to the text would clarify your intent to future readers. ... 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Jul 2014 13:44:09 -0700 (PDT) Received: from SMTP1.etri.info (129.254.28.71) by SMTPEG2.etri.info (129.254.27.142) with Microsoft SMTP Server (TLS) id 14.1.355.2; Sat, 12 Jul 2014 05:44:09 +0900 Received: from SMTP2.etri.info ([169.254.2.160]) by SMTP1.etri.info ([10.2.6.30]) with mapi id 14.01.0355.002; Sat, 12 Jul 2014 05:44:05 +0900 From: =?ks_c_5601-1987?B?t/nBpLW/?= To: Lou Berger Thread-Topic: =?ks_c_5601-1987?B?W1JURy1ESVJdIMi4vcU6IMi4vcU6ICBbbXBsc10gUnRnRGlyIHJl?= =?ks_c_5601-1987?B?dmlldzogZHJhZnQtaWV0Zi1tcGxzLXNtcC1yZXF1aXJlbWVudHMt?= =?ks_c_5601-1987?Q?06.txt?= Thread-Index: AQHPnTu+I+zt/9CorUOfYbvrcdbcUpubVend Date: Fri, 11 Jul 2014 20:44:05 +0000 Message-ID: <5B4A6CBE3924BB41A3BEE462A8E0B75A28749B0A@SMTP2.etri.info> References: <53A5ABED.9080408@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28748144@SMTP2.etri.info>, <53B8190E.6080505@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28749702@SMTP2.etri.info>, <53BE7F3B.9010005@labn.net> 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ZSBwcm90ZWN0aW9uIHN3aXRjaGluZyBldmVudHVhbGx5Lg0KPg0KDQpPa2F5LiBJIHRoaW5rIGFk ZGluZyBzb21ldGhpbmcgYWxvbmcgdGhlIGxpbmVzIG9mICIicmVzb3VyY2UgdXRpbGl6YXRpb24N CmNvb3JkaW5hdGlvbiIgaXMgYSBwYXJ0IG9mIHdob2xlIFNNUCBwcm90ZWN0aW9uIHN3aXRjaGlu ZyBjb29yZGluYXRpb24gIg0KdG8gdGhlIHRleHQgd291bGQgY2xhcmlmeSB5b3VyIGludGVudCB0 byBmdXR1cmUgcmVhZGVycy4NCi4uLg0KDQo= From nobody Fri Jul 11 13:45:46 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B1B411B29FB; Fri, 11 Jul 2014 13:45:42 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -95.402 X-Spam-Level: X-Spam-Status: No, score=-95.402 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, CHARSET_FARAWAY_HEADER=3.2, J_CHICKENPOX_72=0.6, J_CHICKENPOX_91=0.6, MIME_8BIT_HEADER=0.3, MIME_CHARSET_FARAWAY=2.45, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id IEKFe8RU4oJo; Fri, 11 Jul 2014 13:45:38 -0700 (PDT) Received: from smtpeg.etri.re.kr (smtpeg1.etri.re.kr [129.254.27.141]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 5D2DF1B29AC; Fri, 11 Jul 2014 13:45:37 -0700 (PDT) Received: from SMTP1.etri.info (129.254.28.71) by SMTPEG1.etri.info (129.254.27.141) with Microsoft SMTP Server (TLS) id 14.1.355.2; Sat, 12 Jul 2014 05:45:33 +0900 Received: from SMTP2.etri.info ([169.254.2.160]) by SMTP1.etri.info ([10.2.6.30]) with mapi id 14.01.0355.002; Sat, 12 Jul 2014 05:45:32 +0900 From: =?ks_c_5601-1987?B?t/nBpLW/?= To: Lou Berger , Yaacov Weingarten Thread-Topic: =?ks_c_5601-1987?B?W1JURy1ESVJdIMi4vcU6IMi4vcU6ICBbbXBsc10gUnRnRGlyIHJl?= =?ks_c_5601-1987?B?dmlldzogZHJhZnQtaWV0Zi1tcGxzLXNtcC1yZXF1aXJlbWVudHMt?= =?ks_c_5601-1987?Q?06.txt?= Thread-Index: AQHPnTwR3Su8Nb99YkmyI+lQcafNCZubV139 Date: Fri, 11 Jul 2014 20:45:31 +0000 Message-ID: <5B4A6CBE3924BB41A3BEE462A8E0B75A28749B1D@SMTP2.etri.info> References: <53A5ABED.9080408@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28748144@SMTP2.etri.info> , <53BBCE48.7060008@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28749725@SMTP2.etri.info>, <53BE8141.1050506@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A2874981D@SMTP2.etri.info>, <53C0370D.1010503@labn.net> In-Reply-To: <53C0370D.1010503@labn.net> Accept-Language: ko-KR, en-US Content-Language: ko-KR X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [129.254.26.37] Content-Type: text/plain; charset="ks_c_5601-1987" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/TbACu0NgzXbufl96QjHR-PrEKTY Cc: "mpls@ietf.org" , "rtg-ads@tools.ietf.org" , "draft-ietf-mpls-smp-requirements.all@tools.ietf.org" , "rtg-dir@ietf.org" Subject: [mpls] =?euc-kr?b?yLi9xTogW1JURy1ESVJdIMi4vcU6IMi4vcU6ICAgUnRn?= =?euc-kr?q?Dir_review=3A_draft-ietf-mpls-smp-requirements-06=2Etxt?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Jul 2014 20:45:42 -0000 TG91LCANCg0KSSBoYXZlIG5vIHByb2JsZW0gd2l0aCBjaGFuZ2luZyBhcyB5b3Ugc3VnZ2VzdGVk Lg0KQWdhaW4sIHRoYW5rcyBmb3IgeW91ciBoZWxwLg0KDQpCZXN0IHJlZ2FyZHMsDQoNCkplb25n LWRvbmcNCg0KDQpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fDQq6uLO9 ILvntvc6IExvdSBCZXJnZXIgW2xiZXJnZXJAbGFibi5uZXRdDQq6uLO9ILOvwqU6IDIwMTSz4iA3 v/kgMTLAzyDF5L/kwM8gv8DA/CA0OjEyDQq53rTCILvntvc6ILf5waS1vzsgWWFhY292IFdlaW5n YXJ0ZW4NCsL8wbY6IG1wbHNAaWV0Zi5vcmc7IGRyYWZ0LWlldGYtbXBscy1zbXAtcmVxdWlyZW1l bnRzLmFsbEB0b29scy5pZXRmLm9yZzsgcnRnLWRpckBpZXRmLm9yZzsgcnRnLWFkc0B0b29scy5p ZXRmLm9yZw0Kwaa48TogUmU6IFtSVEctRElSXSDIuL3FOiDIuL3FOiAgW21wbHNdIFJ0Z0RpciBy 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<5B4A6CBE3924BB41A3BEE462A8E0B75A28749804@SMTP2.etri.info>, <53C03687.2000007@labn.net>, <5B4A6CBE3924BB41A3BEE462A8E0B75A28749B0A@SMTP2.etri.info> In-Reply-To: <5B4A6CBE3924BB41A3BEE462A8E0B75A28749B0A@SMTP2.etri.info> Accept-Language: ko-KR, en-US Content-Language: ko-KR X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [129.254.26.37] Content-Type: text/plain; charset="ks_c_5601-1987" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/IhqDK-Kk3zDhGTpe0iSzEZuGqBY Cc: "rtg-dir@ietf.org" , "rtg-ads@tools.ietf.org" , "draft-ietf-mpls-smp-requirements.all@tools.ietf.org" , "mpls@ietf.org" Subject: [mpls] =?euc-kr?b?yLi9xTogW1JURy1ESVJdIMi4vcU6IMi4vcU6ICAgUnRn?= =?euc-kr?q?Dir_review=3A_draft-ietf-mpls-smp-requirements-06=2Etxt?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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Z2gsIGkuZS4sIEkgd29uJ3QgcHVzaCB0aGlzDQo+IHBvaW50IGZ1cnRoZXIuDQo+DQo+IFtKUjJd ICJyZXNvdXJjZSB1dGlsaXphdGlvbiBjb29yaW5hdGlvbiIgb2NjdXJzIGJldHdlZW4gdGhlIG5v ZGVzIGFzIGluIG90aGVyIHByb3RlY3Rpb24gc3dpdGNoaW5nLiAicmVzb3VyY2UgdXRpbGl6YXRp b24gY29vcmRpbmF0aW9uIiBpcyBhIHBhcnQgb2Ygd2hvbGUgU01QIHByb3RlY3Rpb24gc3dpdGNo aW5nIGNvb3JkaW5hdGlvbiBhbmQgaXMgbWVhbnQgdG8gZW1waGFzaXplIHRoYXQgY29vcmRpbmF0 aW9uIGlzIGZvciByZXNvdXJjZSB1dGlsaXphdGlvbi4gT2YgY291cnNlLCB0aGUgcmVhc29uIHdo eSBpdCBkb2VzIHJlc291cmNlIHV0aWxpemF0aW9uIGNvb3JkaW5hdGlvbiBpcyB0byBjb21wbGV0 ZSBwcm90ZWN0aW9uIHN3aXRjaGluZyBldmVudHVhbGx5Lg0KPg0KDQpPa2F5LiBJIHRoaW5rIGFk ZGluZyBzb21ldGhpbmcgYWxvbmcgdGhlIGxpbmVzIG9mICIicmVzb3VyY2UgdXRpbGl6YXRpb24N CmNvb3JkaW5hdGlvbiIgaXMgYSBwYXJ0IG9mIHdob2xlIFNNUCBwcm90ZWN0aW9uIHN3aXRjaGlu ZyBjb29yZGluYXRpb24gIg0KdG8gdGhlIHRleHQgd291bGQgY2xhcmlmeSB5b3VyIGludGVudCB0 byBmdXR1cmUgcmVhZGVycy4NCi4uLg0KDQo= From nobody Fri Jul 11 14:16:26 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 52DC81B29AE for ; Fri, 11 Jul 2014 14:16:24 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.551 X-Spam-Level: X-Spam-Status: No, score=-2.551 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.651] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id uYxryhJ4pyd6 for ; Fri, 11 Jul 2014 14:16:22 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 886E71B29A4 for ; Fri, 11 Jul 2014 14:16:22 -0700 (PDT) Received: from [192.168.1.215] (81-236-221-144-no93.tbcn.telia.com [81.236.221.144]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 31A1718013DA; Fri, 11 Jul 2014 23:16:21 +0200 (CEST) Message-ID: <53C0541F.8000804@pi.nu> Date: Fri, 11 Jul 2014 23:16:15 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls@ietf.org" , draft-ietf-mpls-mldp-node-protection@tools.ietf.org, "mpls-chairs@tools.ietf.org" , "VIGOUREUX, MARTIN (MARTIN)" References: <53A00CBF.7010605@pi.nu> In-Reply-To: <53A00CBF.7010605@pi.nu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/4CdXM3iY4e1MBh6Sfgu0OkZFZDc Subject: Re: [mpls] working group last call on draft-ietf-mpls-mldp-node-protection X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Jul 2014 21:16:24 -0000 Working group, This working group last call has been closed! There have been some comments, can the authors please address the comments and update as necessary. /Loa (for the wg chairs) On 2014-06-17 11:39, Loa Andersson wrote: > Working Group, > > This is to initiate a two week working group last call on > draft-ietf-mpls-mldp-node-protection-01. > > Please send your comments to the mpls wg mailing list (mpls@ietf.org). > > There are two IPR disclosures against this document. The authors and > the working group members have been asked in a separate mail to state > whether they are aware of other IPRs that relate to this document. > > This working group last call ends July 1, 2014. > > /Loa > for the MPLS wg chairs > > > From nobody Fri Jul 11 14:25:44 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 10DD61B29BB for ; Fri, 11 Jul 2014 14:25:43 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.551 X-Spam-Level: X-Spam-Status: No, score=-2.551 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.651] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id V_mZvQFBt5nH for ; Fri, 11 Jul 2014 14:25:42 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 238F41B29B4 for ; Fri, 11 Jul 2014 14:25:42 -0700 (PDT) Received: from [192.168.1.215] (81-236-221-144-no93.tbcn.telia.com [81.236.221.144]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id E212818013DA; Fri, 11 Jul 2014 23:25:40 +0200 (CEST) Message-ID: <53C0564F.5040502@pi.nu> Date: Fri, 11 Jul 2014 23:25:35 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , draft-ietf-mpls-mldp-in-band-wildcard-encoding@tools.ietf.org, Martin Vigoureux Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/zy0Q_qrh_VvHL7IUMc_fuewhCQ4 Subject: [mpls] IPR poll on draft-ietf-mpls-mldp-in-band-wildcard-encoding X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Jul 2014 21:25:43 -0000 Working group, The authors of draft-ietf-mpls-mldp-in-band-wildcard-encoding has told the wg chairs that it is time to start the working group last call on this draft. We will do so shortly, we will start the IPR poll first and follow up with the wglc. This mail starts that IPR poll. Are you aware of any IPR that applies to draft-ietf-mpls-mldp-in-band-wildcard-encoding? If so, has this IPR been disclosed in compliance with IETF IPR rules (see RFCs 3979, 4879, 3669 and 5378 for more details). Currently there are no IPR disclosures that relates to this document. If you are listed as a document author or contributor please respond to this email regardless of whether or not you are aware of any relevant IPR. *The response needs to be sent to the MPLS wg mailing list.* The document will not advance to the next stage until a response has been received from each author and contributor. If you are on the MPLS WG email list but are not listed as an author or contributor, then please explicitly respond only if you are aware of any IPR that has not yet been disclosed in conformance with IETF rules. Thanks, Loa (as MPLS WG co-chair) From nobody Fri Jul 11 14:44:06 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 076791B29CC for ; Fri, 11 Jul 2014 14:44:05 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qPKOZVnB8fMd for ; Fri, 11 Jul 2014 14:44:02 -0700 (PDT) Received: from usevmg21.ericsson.net (usevmg21.ericsson.net [198.24.6.65]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A49A11B29B8 for ; Fri, 11 Jul 2014 14:44:01 -0700 (PDT) X-AuditID: c6180641-f79916d00000623a-9f-53c005cf2c4d Received: from EUSAAHC007.ericsson.se (Unknown_Domain [147.117.188.93]) by usevmg21.ericsson.net (Symantec Mail Security) with SMTP id 30.F9.25146.FC500C35; Fri, 11 Jul 2014 17:42:07 +0200 (CEST) Received: from EUSAAMB109.ericsson.se ([147.117.188.126]) by EUSAAHC007.ericsson.se ([147.117.188.93]) with mapi id 14.03.0174.001; Fri, 11 Jul 2014 17:43:53 -0400 From: Jeff Tantsura To: Loa Andersson , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "draft-ietf-mpls-mldp-in-band-wildcard-encoding@tools.ietf.org" , "Martin Vigoureux" Thread-Topic: [mpls] IPR poll on draft-ietf-mpls-mldp-in-band-wildcard-encoding Thread-Index: AQHPnU60qmUvom97aE+ffOAbA08iLJubNYEA Date: Fri, 11 Jul 2014 21:43:52 +0000 Message-ID: References: <53C0564F.5040502@pi.nu> In-Reply-To: <53C0564F.5040502@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.4.1.140326 x-originating-ip: [147.117.188.11] Content-Type: text/plain; charset="iso-8859-1" Content-ID: <2568B16F0452684495335182E835EF56@ericsson.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupnkeLIzCtJLcpLzFFi42KZXLonVvc864Fgg91nxC2eT3zAbvFv7hxm izu7vrBafL+0hMXi1tKVrA6sHq3P9rJ6LFnyk8lj1vQ2No8vlz+zBbBEcdmkpOZklqUW6dsl cGUc22BX8JOv4s35KewNjFt5uhg5OCQETCSWv1LsYuQEMsUkLtxbzwZiCwkcZZS4dpu/i5EL yF7OKHFk8lRmkASbgIHE/2/HWUASIgJ7mCTufHkHlhAWCJA4f7MVrFtEIFDi0KYuKNtI4u3Z B6wgNouAqkTb8pVg9bwC5hKXrrWzQ2xTkXh8bCIjyEGcQDXHP6qAhBmBDvp+ag0TiM0sIC5x 68l8JohDBSSW7DnPDGGLSrx8/A9svKiAnsS74zA1ShIff89nh+jVk7gxdQobhG0t0TptEguE rS2xbOFrqHMEJU7OfMIygVF8FpJ1s5C0z0LSPgtJ+ywk7QsYWVcxcpQWp5blphsZbmIExuAx CTbHHYwLPlkeYhTgYFTi4X3wdn+wEGtiWXFl7iFGaQ4WJXFezep5wUIC6YklqdmpqQWpRfFF pTmpxYcYmTg4pRoYZXaF+EawRDZlnGXZ8UHrwKHjYWcOp/t6redbwSw0U7t+9boJs45efRqa wCXvKDst9Z5+XfRR9/av1+qm18nuXGBmmnyoiFnwX/as0AKJ/t37ei00WJKtPIwnFagxp0tX fJSty6svN3m09+FVgyfz9M8IiBhwP1usd55Hh+mnyrTZ6cbx6yYpsRRnJBpqMRcVJwIADG+Q pqICAAA= Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/tL3wyrTJyiDCY1SZ9Fl7XvW6xZw Subject: Re: [mpls] IPR poll on draft-ietf-mpls-mldp-in-band-wildcard-encoding X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Jul 2014 21:44:05 -0000 Hi Loa, I=B9m not aware of any IPR that has not yet been disclosed. Thanks! Cheers, Jeff -----Original Message----- From: Loa Andersson Date: Friday, July 11, 2014 at 2:25 PM To: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "draft-ietf-mpls-mldp-in-band-wildcard-encoding@tools.ietf.org" , Martin Vigoureux Subject: [mpls] IPR poll on draft-ietf-mpls-mldp-in-band-wildcard-encoding >Working group, > >The authors of draft-ietf-mpls-mldp-in-band-wildcard-encoding has told >the wg chairs that it is time to start the working group last call on >this draft. > >We will do so shortly, we will start the IPR poll first and follow up >with the wglc. > >This mail starts that IPR poll. > >Are you aware of any IPR that applies to >draft-ietf-mpls-mldp-in-band-wildcard-encoding? > >If so, has this IPR been disclosed in compliance with IETF IPR rules >(see RFCs 3979, 4879, 3669 and 5378 for more details). > >Currently there are no IPR disclosures that relates to this document. > >If you are listed as a document author or contributor please respond to >this email regardless of whether or not you are aware of any relevant >IPR. *The response needs to be sent to the MPLS wg mailing list.* The >document will not advance to the next stage until a response has been >received from each author and contributor. > >If you are on the MPLS WG email list but are not listed as an author or >contributor, then please explicitly respond only if you are aware of any >IPR that has not yet been disclosed in conformance with IETF rules. > >Thanks, Loa >(as MPLS WG co-chair) > >_______________________________________________ >mpls mailing list >mpls@ietf.org >https://www.ietf.org/mailman/listinfo/mpls From nobody Fri Jul 11 17:27:41 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1284A1A0091; 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Fri, 11 Jul 2014 19:27:35 -0500 From: "Nobo Akiya (nobo)" To: Gregory Mirsky , "draft-akiya-bfd-seamless-ip@tools.ietf.org" Thread-Topic: Mail regarding draft-akiya-bfd-seamless-ip Thread-Index: Ac+bu+vYh1eB6vZtTcCR1YUv3xMn0wBpRplw Date: Sat, 12 Jul 2014 00:27:34 +0000 Message-ID: References: <7347100B5761DC41A166AC17F22DF1121B7E8F2D@eusaamb103.ericsson.se> In-Reply-To: <7347100B5761DC41A166AC17F22DF1121B7E8F2D@eusaamb103.ericsson.se> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.240.48] Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/2WYW4FAqrNy-Nu4y3D42G-ln25g Cc: "mpls@ietf.org" , "rtg-bfd@ietf.org" Subject: Re: [mpls] Mail regarding draft-akiya-bfd-seamless-ip X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Jul 2014 00:27:38 -0000 Hi Greg, Thanks for comments! Please see in-line. > -----Original Message----- > From: Gregory Mirsky [mailto:gregory.mirsky@ericsson.com] > Sent: Wednesday, July 09, 2014 6:21 PM > To: draft-akiya-bfd-seamless-ip@tools.ietf.org > Cc: rtg-bfd@ietf.org; mpls@ietf.org > Subject: Mail regarding draft-akiya-bfd-seamless-ip >=20 > Dear Authors, > as the scope of the document includes MPLS data plane I've included MPLS > WG in the discussion. Hope you don't mind. Sure, no problem at all. > Please find my notes to the draft below: > . Section 2 states =A0"S-BFD packets are transmitted with IP header, UDP > header and BFD control header". Does that mean that ACH encapsulation is > outside the scope of this document as in that case S-BFD packets would no= t > have IP and UDP headers. If that is the case, then clarification of the s= cope > seems appropriate. Good question. This is exactly one of the points that authors are looking f= or feedback on. We have two options. This is the S-BFD update slide for IETF90 to be presented in the BFD WG. http://www.ietf.org/proceedings/90/slides/slides-90-bfd-2.pptx Please see page 3 on the two options, and we welcome comments/suggestions := ) > . Section 2 introduces "explicitly label switched" scenario. What is it? On the wire, a packet may have a label stack, but ... Type 1: Those locally generated packets that are routed but happens rides o= ver an LSP (ex: IP routed but goes over LDP LSP). Type 2: Those locally generated packets that are designed to ride over a sp= ecific LSP. By "explicitly label switched", I wanted to say Type 2. But looking for sug= gestions. > . Section 2.1, bullet describing selection of Destination IP address. The= RFC > 5884 allows use of the whole range rather than one address: > "The destination IP address MUST be randomly chosen from the 127/8 range > for IPv4 and =A0from the 0:0:0:0:0:FFFF:7F00/104 range for IPv6 with the > following exception." > The document, as worded, restricts use of Destination IP address to exerc= ise > particular path among available multi-paths, as suggested in the RFC 5884= . > I'd suggest to use explanation from Section 7 of the RFC 5884. Good catch! Yes we wanted to describe the range similar to RFC5884, but wor= ded it incorrectly. We will fix that in the next revision. > . Note that if IP/UDP encapsulation used for S-BFD there could not be "ne= w > associated channel type for S-BFD" as 0x0021 and 0x0057 must be used for > IPv4 and IPv6 accordingly. Or was the Ed.Note for PW-ACH encapsulation? > But Section 3 discusses only IP routing of S-BFD pong. Let's see what the WG decides on the S-BFD document structuring (your comme= nt #1 in above). >=20 > Thank you for your kind consideration. Thanks for always thoughtful comments! -Nobo >=20 > Regards, > =A0=A0=A0=A0=A0=A0=A0 Greg From nobody Sat Jul 12 04:49:51 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 243D51B2854 for ; Sat, 12 Jul 2014 04:49:50 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.551 X-Spam-Level: X-Spam-Status: No, score=-2.551 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.651] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Ow-W6KJ7Q6iV for ; Sat, 12 Jul 2014 04:49:48 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 44AFD1B2857 for ; Sat, 12 Jul 2014 04:49:47 -0700 (PDT) Received: from [192.168.0.106] (81-229-83-119-no65.business.telia.com [81.229.83.119]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 3D31F18013DA; Sat, 12 Jul 2014 13:49:46 +0200 (CEST) Message-ID: <53C120DF.7030901@pi.nu> Date: Sat, 12 Jul 2014 13:49:51 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "draft-ietf-mpls-ldp-ipv6@tools.ietf.org" , "VIGOUREUX, MARTIN (MARTIN)" Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/iWgrn8MWV7-HBfPjU6WsLirE8bg Subject: [mpls] Short working group last call on draft-ietf-mpls-ldp-ipv6-13 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Jul 2014 11:49:50 -0000 Working Group, This is to initiate a short working group last call on draft-ietf-mpls-ldp-ipv6-13. Please send your comments to the mpls wg mailing list (mpls@ietf.org). The background is that we pulled the document back from IESG evaluation to update it due to some critical comments. The version that we pulled back was version -10 and we are now at version -13. There are no IPR disclosures against this document. The authors and the working group members have been asked in a separate mail to state whether they are aware of other IPRs that relate to this document. This working group last call ends July 23, 2014. /Loa for the MPLS wg chairs -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Sat Jul 12 07:02:21 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D26511B29C1 for ; Sat, 12 Jul 2014 07:02:17 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.551 X-Spam-Level: X-Spam-Status: No, score=-2.551 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.651] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3adpn3saLqzB for ; Sat, 12 Jul 2014 07:02:16 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 4A42D1B29B1 for ; Sat, 12 Jul 2014 07:02:16 -0700 (PDT) Received: from [192.168.1.215] (81-236-221-144-no93.tbcn.telia.com [81.236.221.144]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 6A1811801586; Sat, 12 Jul 2014 16:02:14 +0200 (CEST) Message-ID: <53C13FDF.1000604@pi.nu> Date: Sat, 12 Jul 2014 16:02:07 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls@ietf.org" Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/yJ43nWrUUCAvb2rd2PB81tmzI6g Cc: "mpls-chairs@tools.ietf.org" , draft-akiya-mpls-entropy-lsp-ping@tools.ietf.org Subject: [mpls] IPR poll on draft-akiya-mpls-entropy-lsp-ping X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Jul 2014 14:02:18 -0000 Working Group, The authors of draft-akiya-mpls-entropy-lsp-ping has told the wg chairs that the draft is ready to be polled to see uf we have support to make it a working group document. While addressing the last procedures details we will start the the IPR poll.This mail starts that IPR poll. Are you aware of any IPR that applies to draft-akiya-mpls-entropy- lsp-ping? If so, has this IPR been disclosed in compliance with IETF IPR rules (see RFCs 3979, 4879, 3669 and 5378 for more details). Currently there are two IPR disclosures that relates to this document. If you are listed as a document author or contributor please respond to this email regardless of whether or not you are aware of any relevant IPR. *The response needs to be sent to the MPLS wg mailing list.* The document will not advance to the next stage until a response has been received from each author and contributor. If you are on the MPLS WG email list but are not listed as an author or contributor, then please explicitly respond only if you are aware of any IPR that has not yet been disclosed in conformance with IETF rules. Thanks, Loa (as MPLS WG co-chair) From nobody Sat Jul 12 12:00:28 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 06C891B2B60 for ; Sat, 12 Jul 2014 12:00:23 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -15.152 X-Spam-Level: X-Spam-Status: No, score=-15.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id srsTlLgs_LuE for ; Sat, 12 Jul 2014 12:00:21 -0700 (PDT) Received: from alln-iport-1.cisco.com (alln-iport-1.cisco.com [173.37.142.88]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 1E18D1B2B94 for ; Sat, 12 Jul 2014 12:00:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1510; q=dns/txt; s=iport; t=1405191621; x=1406401221; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=36oXDUs+HDhNI9kJref28HuDRChDDPUNucb+rOTTM8I=; b=UjrKrpaphUl3X+z6ixcEMd9rGZMKoFLV3skff3FPtvR8TdkKu9dLVXpG F7ldYcYsH0elOnczss3MARPOp2t97zSXUdiuwQc9cs5NA/sezvTHllQMe L6YWCxEP+jilyNqI0jwdgrlNHwsxnKGflLGyjCZYX2QYJWnBOvP8M/o1q c=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgUFAJOEwVOtJV2d/2dsb2JhbABZgw6BLMh/AYERFnWEBAEBAwFuBgUFCwIBCEYyJQIEDgWIOgjHIBeOaRACARwzB4MtgRYBBIoikGyUHYNEgjA X-IronPort-AV: E=Sophos;i="5.01,650,1400025600"; d="scan'208";a="60296508" Received: from rcdn-core-6.cisco.com ([173.37.93.157]) by alln-iport-1.cisco.com with ESMTP; 12 Jul 2014 19:00:20 +0000 Received: from xhc-rcd-x13.cisco.com (xhc-rcd-x13.cisco.com [173.37.183.87]) by rcdn-core-6.cisco.com (8.14.5/8.14.5) with ESMTP id s6CJ0KFg032284 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Sat, 12 Jul 2014 19:00:20 GMT Received: from xmb-aln-x02.cisco.com ([169.254.5.120]) by xhc-rcd-x13.cisco.com ([173.37.183.87]) with mapi id 14.03.0123.003; Sat, 12 Jul 2014 14:00:20 -0500 From: "Carlos Pignataro (cpignata)" To: Loa Andersson Thread-Topic: IPR poll on draft-akiya-mpls-entropy-lsp-ping Thread-Index: AQHPndnla7YobpYJPkC3yIjFdRTM+pudH0UA Date: Sat, 12 Jul 2014 19:00:19 +0000 Message-ID: References: <53C13FDF.1000604@pi.nu> In-Reply-To: <53C13FDF.1000604@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.82.214.157] Content-Type: text/plain; charset="iso-8859-1" Content-ID: <0BDCF7EE0694F2418862EFD84CD1D9B1@emea.cisco.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/pRBKUOoAwu6WgxDrv0jLhtv1Bys Cc: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "draft-akiya-mpls-entropy-lsp-ping@tools.ietf.org" Subject: Re: [mpls] IPR poll on draft-akiya-mpls-entropy-lsp-ping X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Jul 2014 19:00:23 -0000 Loa, As you indicate, there are two IPR disclosures related to this document: IP= R # 2221 and # 2305. I am not aware of any other IPR relevant to this docum= ent. Thanks, Carlos. On Jul 12, 2014, at 10:02 AM, Loa Andersson wrote: > Working Group, >=20 > The authors of draft-akiya-mpls-entropy-lsp-ping has told the wg chairs > that the draft is ready to be polled to see uf we have support to make > it a working group document. >=20 > While addressing the last procedures details we will start the the IPR > poll.This mail starts that IPR poll. >=20 > Are you aware of any IPR that applies to draft-akiya-mpls-entropy- > lsp-ping? >=20 > If so, has this IPR been disclosed in compliance with IETF IPR rules > (see RFCs 3979, 4879, 3669 and 5378 for more details). >=20 > Currently there are two IPR disclosures that relates to this document. >=20 > If you are listed as a document author or contributor please respond to > this email regardless of whether or not you are aware of any relevant > IPR. *The response needs to be sent to the MPLS wg mailing list.* The doc= ument will not advance to the next stage until a response has been > received from each author and contributor. >=20 > If you are on the MPLS WG email list but are not listed as an author or > contributor, then please explicitly respond only if you are aware of any > IPR that has not yet been disclosed in conformance with IETF rules. >=20 > Thanks, Loa > (as MPLS WG co-chair) From nobody Sat Jul 12 12:03:07 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6C9DD1B2B52 for ; Sat, 12 Jul 2014 12:03:05 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -15.152 X-Spam-Level: X-Spam-Status: No, score=-15.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Xhz0LnipWAqa for ; Sat, 12 Jul 2014 12:03:03 -0700 (PDT) Received: from alln-iport-5.cisco.com (alln-iport-5.cisco.com [173.37.142.92]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 79A061B294A for ; Sat, 12 Jul 2014 12:03:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2322; q=dns/txt; s=iport; t=1405191783; x=1406401383; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=G4YEDCPTmM7byWwUx7Usz5ajOIA3ZqtwgfpKm2wPdXM=; b=Y0QOlDy/b3dbzNrtWpgecvN708YTBGgQTmW2wFkUTIvZDiasjjaQoC3K DUGCpgmPpcgpTylAMJvdCGa47wsZ2qfEAOtn4GvxohKSRMyxOGvjKewyL WDA8K1gecdg4fRWFaVZBPk07WCZlIyDJXPu62rnzfdCc+KeonbUvuXVte E=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: At8HAP2FwVOtJA2E/2dsb2JhbABZgw5SrGEBAQEBAQEFAW6UMgqHQwGBERZ1hAMBAQEDAQEBAWsGBQUHBAIBCBEDAQIBLicLHQgCBA4FiDoIDccZEwSFe4huEAIBHDMHBoMngRYFiiKQbJQdg0Q X-IronPort-AV: E=Sophos;i="5.01,650,1400025600"; d="scan'208";a="60349428" Received: from alln-core-10.cisco.com ([173.36.13.132]) by alln-iport-5.cisco.com with ESMTP; 12 Jul 2014 19:03:02 +0000 Received: from xhc-rcd-x10.cisco.com (xhc-rcd-x10.cisco.com [173.37.183.84]) by alln-core-10.cisco.com (8.14.5/8.14.5) with ESMTP id s6CJ32j5012320 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Sat, 12 Jul 2014 19:03:02 GMT Received: from xmb-aln-x14.cisco.com ([169.254.8.248]) by xhc-rcd-x10.cisco.com ([173.37.183.84]) with mapi id 14.03.0123.003; Sat, 12 Jul 2014 14:03:02 -0500 From: "IJsbrand Wijnands (iwijnand)" To: Jeff Tantsura Thread-Topic: [mpls] IPR poll on draft-ietf-mpls-mldp-in-band-wildcard-encoding Thread-Index: AQHPnVFAugcb6dl+yU2ZrE1Udy1k55uczStd Date: Sat, 12 Jul 2014 19:03:01 +0000 Message-ID: <4ABE9238-FCEE-4C68-ABDE-A55ABBEEAA49@cisco.com> References: <53C0564F.5040502@pi.nu>, In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/NmHrfXq1kA8gSbjCJalJvBX0A5U Cc: "draft-ietf-mpls-mldp-in-band-wildcard-encoding@tools.ietf.org" , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" Subject: Re: [mpls] IPR poll on draft-ietf-mpls-mldp-in-band-wildcard-encoding X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Jul 2014 19:03:05 -0000 Same here! Sent from my iPhone > On 11 Jul 2014, at 23:44, "Jeff Tantsura" wr= ote: >=20 > Hi Loa, >=20 > I=B9m not aware of any IPR that has not yet been disclosed. > Thanks! >=20 > Cheers, > Jeff >=20 >=20 > -----Original Message----- > From: Loa Andersson > Date: Friday, July 11, 2014 at 2:25 PM > To: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" > , > "draft-ietf-mpls-mldp-in-band-wildcard-encoding@tools.ietf.org" > , Martin > Vigoureux > Subject: [mpls] IPR poll on draft-ietf-mpls-mldp-in-band-wildcard-encodin= g >=20 >> Working group, >>=20 >> The authors of draft-ietf-mpls-mldp-in-band-wildcard-encoding has told >> the wg chairs that it is time to start the working group last call on >> this draft. >>=20 >> We will do so shortly, we will start the IPR poll first and follow up >> with the wglc. >>=20 >> This mail starts that IPR poll. >>=20 >> Are you aware of any IPR that applies to >> draft-ietf-mpls-mldp-in-band-wildcard-encoding? >>=20 >> If so, has this IPR been disclosed in compliance with IETF IPR rules >> (see RFCs 3979, 4879, 3669 and 5378 for more details). >>=20 >> Currently there are no IPR disclosures that relates to this document. >>=20 >> If you are listed as a document author or contributor please respond to >> this email regardless of whether or not you are aware of any relevant >> IPR. *The response needs to be sent to the MPLS wg mailing list.* The >> document will not advance to the next stage until a response has been >> received from each author and contributor. >>=20 >> If you are on the MPLS WG email list but are not listed as an author or >> contributor, then please explicitly respond only if you are aware of any >> IPR that has not yet been disclosed in conformance with IETF rules. >>=20 >> Thanks, Loa >> (as MPLS WG co-chair) >>=20 >> _______________________________________________ >> mpls mailing list >> mpls@ietf.org >> https://www.ietf.org/mailman/listinfo/mpls >=20 > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls From nobody Sat Jul 12 14:55:14 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1080A1A0AB2 for ; Sat, 12 Jul 2014 14:55:13 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -115.152 X-Spam-Level: X-Spam-Status: No, score=-115.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6LCLDsTFvIlL for ; Sat, 12 Jul 2014 14:55:11 -0700 (PDT) Received: from rcdn-iport-1.cisco.com (rcdn-iport-1.cisco.com [173.37.86.72]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 95AEE1A08EC for ; Sat, 12 Jul 2014 14:55:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1692; q=dns/txt; s=iport; t=1405202111; x=1406411711; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=kWlUkKOA3mv7wrHR1Ql3RBFEkZPPZW01p4VT5i8mG/c=; b=IF8latUrxLklxqLop+LRuXkyHYZ/w0yFuXZLfzN5G7IWJWKjX6D8Fgvl sJlYxygipFQU4Wi/Motgquu97E4PrBQMPGCFI509QEP2sJoSIiK8u5hSd bS8DHZgOdQS34jNS+ZEsTc8tNkFLgOr4AWeRqA1qyzugfFNofPTbrsxzE M=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgcFAJOuwVOtJV2P/2dsb2JhbABZgmokgSzJAQGBERZ1hAMBAQEEOjQGBQwEAgEIEQQBAQsUCQcyFAkIAgQBDQUIiDoBxx0XjmkQAgEeMQcGgyeBFgEEryuDRIIw X-IronPort-AV: E=Sophos;i="5.01,650,1400025600"; d="scan'208";a="339386204" Received: from rcdn-core-7.cisco.com ([173.37.93.143]) by rcdn-iport-1.cisco.com with ESMTP; 12 Jul 2014 21:54:51 +0000 Received: from xhc-aln-x12.cisco.com (xhc-aln-x12.cisco.com [173.36.12.86]) by rcdn-core-7.cisco.com (8.14.5/8.14.5) with ESMTP id s6CLsp7v006128 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Sat, 12 Jul 2014 21:54:51 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-aln-x12.cisco.com ([173.36.12.86]) with mapi id 14.03.0123.003; Sat, 12 Jul 2014 16:54:51 -0500 From: "Nobo Akiya (nobo)" To: Loa Andersson , "mpls@ietf.org" Thread-Topic: IPR poll on draft-akiya-mpls-entropy-lsp-ping Thread-Index: AQHPndnlQK6EnxKx7kyka6DzpKkwxJuc+/+A Date: Sat, 12 Jul 2014 21:54:50 +0000 Message-ID: References: <53C13FDF.1000604@pi.nu> In-Reply-To: <53C13FDF.1000604@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.240.48] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/9V-72pscZ3pjNK8-NfSP45yM2vs Cc: "mpls-chairs@tools.ietf.org" , "draft-akiya-mpls-entropy-lsp-ping@tools.ietf.org" Subject: Re: [mpls] IPR poll on draft-akiya-mpls-entropy-lsp-ping X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Jul 2014 21:55:13 -0000 Hi Loa, I am not aware of any other IPRs to this document besides IPRs # 2221 and #= 2305. Thanks! -Nobo > -----Original Message----- > From: Loa Andersson [mailto:loa@pi.nu] > Sent: Saturday, July 12, 2014 10:02 AM > To: mpls@ietf.org > Cc: mpls-chairs@tools.ietf.org; draft-akiya-mpls-entropy-lsp- > ping@tools.ietf.org; Martin Vigoureux > Subject: IPR poll on draft-akiya-mpls-entropy-lsp-ping >=20 > Working Group, >=20 > The authors of draft-akiya-mpls-entropy-lsp-ping has told the wg chairs t= hat > the draft is ready to be polled to see uf we have support to make it a > working group document. >=20 > While addressing the last procedures details we will start the the IPR > poll.This mail starts that IPR poll. >=20 > Are you aware of any IPR that applies to draft-akiya-mpls-entropy- lsp-pi= ng? >=20 > If so, has this IPR been disclosed in compliance with IETF IPR rules (see= RFCs > 3979, 4879, 3669 and 5378 for more details). >=20 > Currently there are two IPR disclosures that relates to this document. >=20 > If you are listed as a document author or contributor please respond to t= his > email regardless of whether or not you are aware of any relevant IPR. *Th= e > response needs to be sent to the MPLS wg mailing list.* The document will > not advance to the next stage until a response has been received from eac= h > author and contributor. >=20 > If you are on the MPLS WG email list but are not listed as an author or > contributor, then please explicitly respond only if you are aware of any = IPR > that has not yet been disclosed in conformance with IETF rules. >=20 > Thanks, Loa > (as MPLS WG co-chair) From nobody Sat Jul 12 14:56:25 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6D2FB1A0654 for ; Sat, 12 Jul 2014 14:56:24 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2 X-Spam-Level: X-Spam-Status: No, score=-2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id EWyIre6VGCXj for ; Sat, 12 Jul 2014 14:56:23 -0700 (PDT) Received: from mail-pd0-x233.google.com (mail-pd0-x233.google.com [IPv6:2607:f8b0:400e:c02::233]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 16BA01A04C2 for ; Sat, 12 Jul 2014 14:56:23 -0700 (PDT) Received: by mail-pd0-f179.google.com with SMTP id w10so3180097pde.24 for ; Sat, 12 Jul 2014 14:56:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=references:mime-version:in-reply-to:content-type :content-transfer-encoding:message-id:cc:from:subject:date:to; bh=ns6TJ6TpchJZE/d+zG29ylQroBDSWm7avpW4aPcsy/E=; b=sYIyoNJs7n5LPi9IhNPdiDDV4JgdP9xASO2qhCTJQQA1eEkxVhGm4RqJ05HzIrBjZx DlC0H1y+vWnVaCB8JtSrMlwGGUPyLrTHwU2peqXnZgi8zeGOvt3cAa+iFPJ6ypFFPdft IIcOV7qfOUQhpdT6uEYHGmuWqlGHNP5FscZ6YRxZTrkuKpc0xyCsErrho1KrDEfva/Oj eLMVGJ+Vjt+nG0d/kSfSiM3FNvhT8aXZWe2SwXuRi7j4HsWvnzo41l4LLa5xrC8I5+ot x7dwLRsR0tK05nMbgm0q2R1BXtMjzN1cH3W31l9QLu9ljH3vl85xv6JVbwNcDv++0acg HpxA== X-Received: by 10.70.15.225 with SMTP id a1mr7196651pdd.13.1405202182721; Sat, 12 Jul 2014 14:56:22 -0700 (PDT) Received: from [192.168.1.6] (c-107-3-154-60.hsd1.ca.comcast.net. [107.3.154.60]) by mx.google.com with ESMTPSA id y1sm6155053pbw.87.2014.07.12.14.56.21 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sat, 12 Jul 2014 14:56:21 -0700 (PDT) References: <53C13FDF.1000604@pi.nu> Mime-Version: 1.0 (1.0) In-Reply-To: <53C13FDF.1000604@pi.nu> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Message-Id: <370B9DEB-3135-4360-B0DF-E795DD70D12D@gmail.com> X-Mailer: iPad Mail (11D257) From: Sam Aldrin Date: Sat, 12 Jul 2014 14:56:20 -0700 To: Loa Andersson Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/6D9yI0mosRFbx4lsrhm5yyVkErE Cc: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "draft-akiya-mpls-entropy-lsp-ping@tools.ietf.org" Subject: Re: [mpls] IPR poll on draft-akiya-mpls-entropy-lsp-ping X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Jul 2014 21:56:24 -0000 None that I am aware off. Sam Sent from my iPad > On Jul 12, 2014, at 7:02 AM, Loa Andersson wrote: >=20 > Working Group, >=20 > The authors of draft-akiya-mpls-entropy-lsp-ping has told the wg chairs > that the draft is ready to be polled to see uf we have support to make > it a working group document. >=20 > While addressing the last procedures details we will start the the IPR > poll.This mail starts that IPR poll. >=20 > Are you aware of any IPR that applies to draft-akiya-mpls-entropy- > lsp-ping? >=20 > If so, has this IPR been disclosed in compliance with IETF IPR rules > (see RFCs 3979, 4879, 3669 and 5378 for more details). >=20 > Currently there are two IPR disclosures that relates to this document. >=20 > If you are listed as a document author or contributor please respond to > this email regardless of whether or not you are aware of any relevant > IPR. *The response needs to be sent to the MPLS wg mailing list.* The docu= ment will not advance to the next stage until a response has been > received from each author and contributor. >=20 > If you are on the MPLS WG email list but are not listed as an author or > contributor, then please explicitly respond only if you are aware of any > IPR that has not yet been disclosed in conformance with IETF rules. >=20 > Thanks, Loa > (as MPLS WG co-chair) From nobody Sat Jul 12 16:58:14 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 263801B278C for ; Sat, 12 Jul 2014 16:58:11 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -15.152 X-Spam-Level: X-Spam-Status: No, score=-15.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id zwC2GfeRG--y for ; Sat, 12 Jul 2014 16:58:09 -0700 (PDT) Received: from rcdn-iport-7.cisco.com (rcdn-iport-7.cisco.com [173.37.86.78]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 36DB61ACD01 for ; Sat, 12 Jul 2014 16:58:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=39; q=dns/txt; s=iport; t=1405209490; x=1406419090; h=from:to:cc:subject:in-reply-to:reply-to:mime-version: content-id:date:message-id; bh=OQJsKKQ25dkxQW3wgUe3GyAj9LkVTuAfyYw5xMGKA1U=; b=HOSaL3owxk0ihspMGQMQB0l9Y6yEmn7LR9WrnYWNdfQz/+VAriWXvvh3 Yt9FkgOnGeOOomXIKY5e38/IaL4L68+MXma5R59dTYpmzB1vmk6v75GVj ycMu5f5UIsGTMCIM7biCcW7dLzF4cdBVllRPiG0Fvp7JDPzQquC+LMWjR c=; X-IronPort-AV: E=Sophos;i="5.01,651,1400025600"; d="scan'208";a="339564476" Received: from alln-core-6.cisco.com ([173.36.13.139]) by rcdn-iport-7.cisco.com with ESMTP; 12 Jul 2014 23:58:08 +0000 Received: from erosen-lnx.cisco.com (erosen-lnx.cisco.com [161.44.71.19]) by alln-core-6.cisco.com (8.14.5/8.14.5) with ESMTP id s6CNw7QJ024749; Sat, 12 Jul 2014 23:58:07 GMT Received: from erosen-lnx (localhost [127.0.0.1]) by erosen-lnx.cisco.com (Postfix) with ESMTP id 4CFD8787; Sat, 12 Jul 2014 19:58:07 -0400 (EDT) From: Eric Rosen To: Loa Andersson In-reply-to: Your message of Fri, 11 Jul 2014 23:25:35 +0200. <53C0564F.5040502@pi.nu> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <12395.1405209487.1@erosen-lnx> Date: Sat, 12 Jul 2014 19:58:07 -0400 Message-ID: <12396.1405209487@erosen-lnx> Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/oZXepvN8iSm7pFd4XEJrTnMMO5E Cc: draft-ietf-mpls-mldp-in-band-wildcard-encoding@tools.ietf.org, "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" Subject: Re: [mpls] IPR poll on draft-ietf-mpls-mldp-in-band-wildcard-encoding X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: erosen@cisco.com List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Jul 2014 23:58:11 -0000 I am not aware of any applicable IPR. From nobody Sun Jul 13 08:13:08 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2D5051B2880 for ; Sun, 13 Jul 2014 08:13:05 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -15.151 X-Spam-Level: X-Spam-Status: No, score=-15.151 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, TVD_SPACE_RATIO=0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id zXd7tI9OMQ5N for ; Sun, 13 Jul 2014 08:13:04 -0700 (PDT) Received: from rcdn-iport-1.cisco.com (rcdn-iport-1.cisco.com [173.37.86.72]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D42E61B2813 for ; 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Sun, 13 Jul 2014 15:13:03 GMT Received: from xmb-rcd-x03.cisco.com ([169.254.7.65]) by xhc-rcd-x10.cisco.com ([173.37.183.84]) with mapi id 14.03.0123.003; Sun, 13 Jul 2014 10:13:02 -0500 From: "Nagendra Kumar Nainar (naikumar)" To: Loa Andersson , "mpls@ietf.org" Thread-Topic: [mpls] IPR poll on draft-akiya-mpls-entropy-lsp-ping Thread-Index: AQHPndnwZ2XIu9RixEKOZa/1eCCmgpueLJ2A Date: Sun, 13 Jul 2014 15:13:02 +0000 Message-ID: References: <53C13FDF.1000604@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.4.2.140509 x-originating-ip: [10.21.82.76] Content-Type: text/plain; charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/CSquGWaQ2-Y_Y4pf9xuy6kH7GOQ Cc: "mpls-chairs@tools.ietf.org" , "draft-akiya-mpls-entropy-lsp-ping@tools.ietf.org" Subject: Re: [mpls] IPR poll on draft-akiya-mpls-entropy-lsp-ping X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 13 Jul 2014 15:13:05 -0000 From nobody Sun Jul 13 11:00:45 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E31CD1A0076 for ; 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bh=F6WM0AJxYnAJSNNR/lORv1ezWvfvDHOMOt3dZ9x2qPM=; b=WMiBPcAsser5GgK4yVmfB9dGS3Z2+u7rps109AdmzJu9HHMKW4HGpXuB IHs5l/IS0yqJ0cF5reGjVxLyIT7ibNmzpkgu3xPIxO+Kb+zKIxpeELhrr Qezm+HVxRTQ2RziKWuUgbI7JFbY4WSwg63yPgqBcjuTwpXMtZN5ic77GI E=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AhAFAPzHwlOtJV2R/2dsb2JhbABZgw5SWsE3CodDAYEJFnWEBAEBBAEBATc0BgUQAgEINhAnCyUCBAENBYhCDccREwSOaRACAU8HhEMFmw6UHYNEgjA X-IronPort-AV: E=Sophos;i="5.01,654,1400025600"; d="scan'208";a="339765811" Received: from rcdn-core-9.cisco.com ([173.37.93.145]) by rcdn-iport-4.cisco.com with ESMTP; 13 Jul 2014 18:00:40 +0000 Received: from xhc-aln-x11.cisco.com (xhc-aln-x11.cisco.com [173.36.12.85]) by rcdn-core-9.cisco.com (8.14.5/8.14.5) with ESMTP id s6DI0eO1029097 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Sun, 13 Jul 2014 18:00:40 GMT Received: from xmb-rcd-x03.cisco.com ([169.254.7.65]) by xhc-aln-x11.cisco.com ([173.36.12.85]) with mapi id 14.03.0123.003; Sun, 13 Jul 2014 13:00:40 -0500 From: "Nagendra Kumar Nainar (naikumar)" To: Loa Andersson , "mpls@ietf.org" Thread-Topic: [mpls] IPR poll on draft-akiya-mpls-entropy-lsp-ping Thread-Index: AQHPndnwZ2XIu9RixEKOZa/1eCCmgpueXcgA Date: Sun, 13 Jul 2014 18:00:39 +0000 Message-ID: References: <53C13FDF.1000604@pi.nu> In-Reply-To: <53C13FDF.1000604@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.4.2.140509 x-originating-ip: [10.82.211.89] Content-Type: text/plain; charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/TBTVcWAjAJ7TWIL4X-9b2pRhbRk Cc: "mpls-chairs@tools.ietf.org" , "draft-akiya-mpls-entropy-lsp-ping@tools.ietf.org" Subject: Re: [mpls] IPR poll on draft-akiya-mpls-entropy-lsp-ping X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 13 Jul 2014 18:00:44 -0000 Hi Loa, I am not aware of any IPR other than IPR#2221 and 2305 related to this document. Thanks, Nagendra On 7/12/14, 10:02 AM, "Loa Andersson" wrote: >Working Group, > >The authors of draft-akiya-mpls-entropy-lsp-ping has told the wg chairs >that the draft is ready to be polled to see uf we have support to make >it a working group document. > >While addressing the last procedures details we will start the the IPR >poll.This mail starts that IPR poll. > >Are you aware of any IPR that applies to draft-akiya-mpls-entropy- >lsp-ping? > >If so, has this IPR been disclosed in compliance with IETF IPR rules >(see RFCs 3979, 4879, 3669 and 5378 for more details). > >Currently there are two IPR disclosures that relates to this document. > >If you are listed as a document author or contributor please respond to >this email regardless of whether or not you are aware of any relevant >IPR. *The response needs to be sent to the MPLS wg mailing list.* The >document will not advance to the next stage until a response has been >received from each author and contributor. > >If you are on the MPLS WG email list but are not listed as an author or >contributor, then please explicitly respond only if you are aware of any >IPR that has not yet been disclosed in conformance with IETF rules. > >Thanks, Loa >(as MPLS WG co-chair) > >_______________________________________________ >mpls mailing list >mpls@ietf.org >https://www.ietf.org/mailman/listinfo/mpls > From nobody Mon Jul 14 01:38:39 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 717ED1A037A for ; Mon, 14 Jul 2014 01:38:38 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.551 X-Spam-Level: X-Spam-Status: No, score=-2.551 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.651] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id peazhDpX5iSl for ; Mon, 14 Jul 2014 01:38:36 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 9EE461A0378 for ; Mon, 14 Jul 2014 01:38:36 -0700 (PDT) Received: from [192.168.1.133] (81-236-221-144-no93.tbcn.telia.com [81.236.221.144]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id DA5B81802B19; Mon, 14 Jul 2014 10:38:34 +0200 (CEST) Message-ID: <53C39711.4040301@pi.nu> Date: Mon, 14 Jul 2014 10:38:41 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls@ietf.org" Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/_ZBbMfb2Gez2Zu3IkEDjdMF1euM Cc: "mpls-chairs@tools.ietf.org" , draft-ietf-mpls-proxy-lsp-ping@tools.ietf.org Subject: [mpls] Implementation poll on draft-ietf-mpls-proxy-lsp-ping X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Jul 2014 08:38:38 -0000 Working Group, draft-ietf-mpls-proxy-lsp-ping has been updated after working group last call (version -02) and we are almost ready to send it to the IESG with a request for publication. In preparing the shepherd write-up we need information on existing implementations. This is to start a poll for implementations of draft-ietf-mpls-proxy- lsp-ping. If you have an implementation please respond to the mailing-list or directly to the wg-chairs. /Loa for the wg chairs -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Mon Jul 14 02:43:02 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 15FB71A0383 for ; Mon, 14 Jul 2014 02:43:01 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 4 X-Spam-Level: **** X-Spam-Status: No, score=4 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, CHARSET_FARAWAY_HEADER=3.2, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, J_CHICKENPOX_52=0.6, MIME_8BIT_HEADER=0.3, MIME_CHARSET_FARAWAY=2.45, RCVD_IN_DNSWL_NONE=-0.0001, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) 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aXY+PC9kaXY+X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18K bXBscyBtYWlsaW5nIGxpc3QKPGEgaHJlZj0ibWFpbHRvOm1wbHNAaWV0Zi5vcmciIHRhcmdldD0i X2JsYW5rIj5tcGxzQGlldGYub3JnPC9hPgo8YSBocmVmPSJodHRwczovL3d3dy5pZXRmLm9yZy9t YWlsbWFuL2xpc3RpbmZvL21wbHMiIHRhcmdldD0iX2JsYW5rIj5odHRwczovL3d3dy5pZXRmLm9y Zy9tYWlsbWFuL2xpc3RpbmZvL21wbHM8L2E+PC9kaXY+IAkJIAkgICAJCSAgPC9kaXY+PC9kaXY+ CjwvYmxvY2txdW90ZT48L2Rpdj48YnI+PC9kaXY+PC9kaXY+IAkJIAkgICAJCSAgPC9kaXY+PC9i b2R5Pg0KPC9odG1sPg== --_4b17cc96-6a70-4c1d-98b2-c688c0d7c7d7_-- From nobody Mon Jul 14 03:11:30 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 0CC531A0386 for ; Mon, 14 Jul 2014 03:11:28 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -15.152 X-Spam-Level: X-Spam-Status: No, score=-15.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id lbvHwjTxbsc1 for ; Mon, 14 Jul 2014 03:11:26 -0700 (PDT) Received: from aer-iport-1.cisco.com (aer-iport-1.cisco.com [173.38.203.51]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2D8D71A0167 for ; Mon, 14 Jul 2014 03:11:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1637; q=dns/txt; s=iport; t=1405332686; x=1406542286; h=message-id:date:from:reply-to:mime-version:to:cc:subject: references:in-reply-to:content-transfer-encoding; bh=7nlnXG+gE8Qq7izUJsNoFjkCkV/QD9Io57RTzDIMM08=; b=RKMlZpDl0Ck6DS6xs3GNHdaJoF5C8d2SzTreHcd3AZyUAQ/zbCULd6Hi WXJ11LO0T1lBTp1cYQ4nq77jLd/krHon/ZI+ewHsUWK237Ud1Ox1cP24+ tyC+G05+9SeagzsTlNoKuhk+EdrQ7P0Vkl2kSEGOK908VsNDrZ8KxaCMV w=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AqQEAJirw1OtJssW/2dsb2JhbABZg2DCFgqHQwGBLnWEBAEBBAEBATU2BgQBEAsYCRYPCQMCAQIBFTAGAQwBBQIBAYg+DbZRkFQXjmkQAgFPB4RDAQSbDocSjQuDRWs X-IronPort-AV: E=Sophos;i="5.01,657,1400025600"; d="scan'208";a="111041300" Received: from aer-iport-nat.cisco.com (HELO aer-core-2.cisco.com) ([173.38.203.22]) by aer-iport-1.cisco.com with ESMTP; 14 Jul 2014 10:11:24 +0000 Received: from cisco.com (mrwint.cisco.com [64.103.70.36]) by aer-core-2.cisco.com (8.14.5/8.14.5) with ESMTP id s6EABOQK019714 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 14 Jul 2014 10:11:24 GMT Received: from [127.0.0.1] (localhost [127.0.0.1]) by cisco.com (8.14.4+Sun/8.8.8) with ESMTP id s6EAB380003043; Mon, 14 Jul 2014 11:11:07 +0100 (BST) Message-ID: <53C3ACB7.7010209@cisco.com> Date: Mon, 14 Jul 2014 11:11:03 +0100 From: Stewart Bryant User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: Loa Andersson , "mpls@ietf.org" References: <53C13FDF.1000604@pi.nu> In-Reply-To: <53C13FDF.1000604@pi.nu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/HfN2-M1wv-1731gbPtKJ6z1SSdw Cc: "mpls-chairs@tools.ietf.org" , draft-akiya-mpls-entropy-lsp-ping@tools.ietf.org Subject: Re: [mpls] IPR poll on draft-akiya-mpls-entropy-lsp-ping X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: stbryant@cisco.com List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Jul 2014 10:11:28 -0000 Support This is a problem that we need to work on, and this is a good place to start. Stewart On 12/07/2014 15:02, Loa Andersson wrote: > Working Group, > > The authors of draft-akiya-mpls-entropy-lsp-ping has told the wg chairs > that the draft is ready to be polled to see uf we have support to make > it a working group document. > > While addressing the last procedures details we will start the the IPR > poll.This mail starts that IPR poll. > > Are you aware of any IPR that applies to draft-akiya-mpls-entropy- > lsp-ping? > > If so, has this IPR been disclosed in compliance with IETF IPR rules > (see RFCs 3979, 4879, 3669 and 5378 for more details). > > Currently there are two IPR disclosures that relates to this document. > > If you are listed as a document author or contributor please respond to > this email regardless of whether or not you are aware of any relevant > IPR. *The response needs to be sent to the MPLS wg mailing list.* The > document will not advance to the next stage until a response has been > received from each author and contributor. > > If you are on the MPLS WG email list but are not listed as an author or > contributor, then please explicitly respond only if you are aware of any > IPR that has not yet been disclosed in conformance with IETF rules. > > Thanks, Loa > (as MPLS WG co-chair) > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > > -- For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/index.html From nobody Mon Jul 14 04:36:21 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 104D81A038B for ; Mon, 14 Jul 2014 04:36:20 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.7 X-Spam-Level: X-Spam-Status: No, score=-1.7 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, MIME_8BIT_HEADER=0.3, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id sqfcjWiUrofS for ; Mon, 14 Jul 2014 04:36:18 -0700 (PDT) Received: from mail-we0-x22a.google.com (mail-we0-x22a.google.com [IPv6:2a00:1450:400c:c03::22a]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 826F71A0386 for ; Mon, 14 Jul 2014 04:36:18 -0700 (PDT) Received: by mail-we0-f170.google.com with SMTP id w62so3670632wes.29 for ; Mon, 14 Jul 2014 04:36:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:disposition-notification-to:date:from:reply-to :user-agent:mime-version:to:cc:subject:references:in-reply-to :content-type:content-transfer-encoding; bh=TkBCkq8wOoTcSchd5+uRVf2n0Lv4ZtgBu9xeIPQJV3M=; b=gLqesvNqHvQau0hFNOYi12YIKKYeyqAPEHD9pBg/aJMxPmD9VLc7WVKzmEMljr1eDc fF7xjr67tZok/aH5I4n4+D8xDgeX3wZTrXVXbNF0z92icqYRMu1KugSSP/P6t37QIRAf 6295Qimysjf/oYBT4CYI0Mrt2jFd9FW5AokMd4QX/lc6BGXwsIrjPWSuMowehg2eSvEG a3qkoq8Pr2Bi2aJztzg/zGp4YNFQi1kLDN3o0gvEhKX3BgejB5Tt/bozPTDFOZ88egdy fHa0UrQ8g5klmpE1sJz5XOhi+cnJVWjgnGHjXo4hf1CK5aFDFaltG6gujQxqdLMDtZzW YqkQ== X-Received: by 10.180.24.97 with SMTP id t1mr24028940wif.45.1405337776795; Mon, 14 Jul 2014 04:36:16 -0700 (PDT) Received: from McAsterix.local (g215085.upc-g.chello.nl. [80.57.215.85]) by mx.google.com with ESMTPSA id u10sm24919141wjz.43.2014.07.14.04.36.15 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 14 Jul 2014 04:36:16 -0700 (PDT) Message-ID: <53C3C0AD.1040903@gmail.com> Date: Mon, 14 Jul 2014 13:36:13 +0200 From: Huub van Helvoort User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: Loa Andersson , weiqiang cheng , liu.guoman@zte.com.cn References: <53BFC884.1000105@pi.nu> In-Reply-To: <53BFC884.1000105@pi.nu> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/t-pW1XqkQQXtUeBbOZwj5r9Sufk Cc: "mpls@ietf.org" , "draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org" Subject: Re: [mpls] =?utf-8?b?562U5aSNOiAgW01QTFNdIEFueSBjb21tZW50cyBvbiB0aGUg?= =?utf-8?q?draft_of_MPLS-TP_Shared-Ring_protection_=28MSRP=29_mechanism_fo?= =?utf-8?q?r_ring_topology=E2=80=9D_=3F?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: huubatwork@gmail.com List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Jul 2014 11:36:20 -0000 Hello Loa, You wrote: > RFC 7271 took great care to make the PSC and APS identical from an > operational point of view; does this mean that PSC (RFC 7271) could > be used also? For an operator the operational functions (lockout, forced switch, manual switch exercise, clear) are compatible with PSC/APS. However: One difference with PSC/APS is the PDU format: for ring protection a source and destination address are required. The other difference is the forwarding and processing of the RPS PDUs in each node in the ring. RPS messages are send clockwise around the ring, AND RPS messages are send counter-clockwise around the ring. Because of these differences we use RPS because this is dedicated to Ring protection (it requires a A-Ch channel type different from PSC). Best regards, Huub. > On 2014-07-11 11:03, weiqiang cheng wrote: >> Hi Guoman, >> >> The "APS" should be "RPS" Ring Protection Switching, and It is >> a clerical error. So sorry to make you confused. We will modify it in >> late version. >> Thanks a lot. >> >> B.R. >> Weiqiang Cheng >> >> >> 2014-07-11 14:51 GMT+08:00 > >: >> >> hi, weiqiang >> I have just reviewed this draft and a question for clause 3 >> coordination protocol >> it seem to have two types protocol , one is RPS protocol in clause >> 3.1. another is APS protocol in clause 3.2. >> is it necessary to use the two types of protocol in the mpls-tp >> ring protection? >> I think the answer is "no". how about it？ >> >> thank you ! >> >> B.R. >> liu >> >> *weiqiang cheng >* >> å‘件人: "mpls" > > >> >> 2014-07-09 18:41 >> >> 收件人 >> "mpls@ietf.org " > >, >> æŠ„é€ >> "draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org >> " >> > > >> 主题 >> [mpls] [MPLS] Any comments on the draft of MPLS-TP Shared-Ring >> protection (MSRP) mechanism for ring topology†? >> >> Hi There, >> We uploaded the new version draft “MPLS-TP Shared-Ring protection >> (MSRP) mechanism for ring topology†>> >> _https://datatracker.ietf.org/doc/draft-cheng-mpls-tp-shared-ring-protection/_ >> >> >> We authors would like to see comments on this draft. Please help to >> review it and It would be highly appreciated to send your comments >> on the mailing list. >> >> Thanks, >> Weiqiang Cheng_______________________________________________ -- ***************************************************************** 请记ä½ï¼Œä½ æ˜¯ç‹¬ä¸€æ— äºŒçš„，就åƒå…¶ä»–æ¯ä¸€ä¸ªäººä¸€æ · From nobody Mon Jul 14 04:40:09 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 0AE8C1A038E for ; Mon, 14 Jul 2014 04:40:08 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.251 X-Spam-Level: X-Spam-Status: No, score=-2.251 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, MIME_8BIT_HEADER=0.3, RP_MATCHES_RCVD=-0.651] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hndQqanlvuY9 for ; Mon, 14 Jul 2014 04:40:05 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 4321E1A0361 for ; Mon, 14 Jul 2014 04:40:05 -0700 (PDT) Received: from [192.168.0.106] (81-229-83-119-no65.business.telia.com [81.229.83.119]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id D03BF1802B19; Mon, 14 Jul 2014 13:40:03 +0200 (CEST) Message-ID: <53C3C19A.7070506@pi.nu> Date: Mon, 14 Jul 2014 13:40:10 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: huubatwork@gmail.com, weiqiang cheng , liu.guoman@zte.com.cn References: <53BFC884.1000105@pi.nu> <53C3C0AD.1040903@gmail.com> In-Reply-To: <53C3C0AD.1040903@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/ShkJAI1zEL3On_lUY7UhuWGOsp8 Cc: "mpls@ietf.org" , "draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org" Subject: Re: [mpls] =?utf-8?b?562U5aSNOiAgW01QTFNdIEFueSBjb21tZW50cyBvbiB0aGUg?= =?utf-8?q?draft_of_MPLS-TP_Shared-Ring_protection_=28MSRP=29_mechanism_fo?= =?utf-8?q?r_ring_topology=E2=80=9D_=3F?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Jul 2014 11:40:08 -0000 Huub, Are you saying that this can't be done using PSC? Or just that there is a preference using RPS. Or that RPS is what you used? /Loa On 2014-07-14 13:36, Huub van Helvoort wrote: > Hello Loa, > > You wrote: > >> RFC 7271 took great care to make the PSC and APS identical from an >> operational point of view; does this mean that PSC (RFC 7271) could >> be used also? > > For an operator the operational functions (lockout, forced switch, > manual switch exercise, clear) are compatible with PSC/APS. > > However: > One difference with PSC/APS is the PDU format: for ring protection > a source and destination address are required. > The other difference is the forwarding and processing of the RPS > PDUs in each node in the ring. RPS messages are send clockwise > around the ring, AND RPS messages are send counter-clockwise > around the ring. > > Because of these differences we use RPS because this is dedicated > to Ring protection (it requires a A-Ch channel type different from > PSC). > > Best regards, Huub. > > >> On 2014-07-11 11:03, weiqiang cheng wrote: >>> Hi Guoman, >>> >>> The "APS" should be "RPS" Ring Protection Switching, and It is >>> a clerical error. So sorry to make you confused. We will modify it in >>> late version. >>> Thanks a lot. >>> >>> B.R. >>> Weiqiang Cheng >>> >>> >>> 2014-07-11 14:51 GMT+08:00 >> >: >>> >>> hi, weiqiang >>> I have just reviewed this draft and a question for clause 3 >>> coordination protocol >>> it seem to have two types protocol , one is RPS protocol in clause >>> 3.1. another is APS protocol in clause 3.2. >>> is it necessary to use the two types of protocol in the mpls-tp >>> ring protection? >>> I think the answer is "no". how about it？ >>> >>> thank you ! >>> >>> B.R. >>> liu >>> >>> *weiqiang cheng >* >>> å‘件人: "mpls" >> > >>> >>> 2014-07-09 18:41 >>> >>> 收件人 >>> "mpls@ietf.org " >> >, >>> æŠ„é€ >>> "draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org >>> " >>> >> > >>> 主题 >>> [mpls] [MPLS] Any comments on the draft of MPLS-TP Shared-Ring >>> protection (MSRP) mechanism for ring topology†? >>> >>> Hi There, >>> We uploaded the new version draft “MPLS-TP Shared-Ring protection >>> (MSRP) mechanism for ring topology†>>> >>> _https://datatracker.ietf.org/doc/draft-cheng-mpls-tp-shared-ring-protection/_ >>> >>> >>> >>> We authors would like to see comments on this draft. Please help to >>> review it and It would be highly appreciated to send your comments >>> on the mailing list. >>> >>> Thanks, >>> Weiqiang Cheng_______________________________________________ > > > -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Mon Jul 14 05:10:35 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 31A831A03CB for ; Mon, 14 Jul 2014 05:10:34 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.7 X-Spam-Level: X-Spam-Status: No, score=-1.7 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, MIME_8BIT_HEADER=0.3, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PzQ4_dySww4Z for ; Mon, 14 Jul 2014 05:10:33 -0700 (PDT) Received: from mail-wg0-x22b.google.com (mail-wg0-x22b.google.com [IPv6:2a00:1450:400c:c00::22b]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id AC3171A03CE for ; Mon, 14 Jul 2014 05:10:32 -0700 (PDT) Received: by mail-wg0-f43.google.com with SMTP id l18so3196265wgh.2 for ; Mon, 14 Jul 2014 05:10:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:disposition-notification-to:date:from:reply-to :user-agent:mime-version:to:cc:subject:references:in-reply-to :content-type:content-transfer-encoding; bh=lf9EZTfmYtGv6PJycrvsP5Km5HhisTToiUFcucp5ngI=; b=IWW+6cICQ4PwFsH9Vx7uGGf7/z/eri6py/bxcu4XoHrvJG3U1ept0NeZE770nyIZVZ TW1WFUKdcht/xZpyMU82oSTk0lBtYOhjnFZEZZ/Thh40c7xMAtrDFL5OYDCERNj+MZI5 /opnSyLWp1fH/Pr1cS6TuwmCuHALVInBBuT8LgeqS6aieU7Rrd02jgqFs2mlxSZlnk9r jKKU9cYHiYvwhI9hcc+wV0HCvxAnBpFuCu8SqApbdugaFQVSGDhEZ+XDB9LsYiEMfQjH AHDXJAm4P6jpJnfUQqeusW/aOTfwSfSl2Rpai58GBgqEn2/gTSgfYjFQtk9V0R28b5M/ BX5w== X-Received: by 10.194.86.74 with SMTP id n10mr2819989wjz.132.1405339829072; Mon, 14 Jul 2014 05:10:29 -0700 (PDT) Received: from McAsterix.local (g215085.upc-g.chello.nl. [80.57.215.85]) by mx.google.com with ESMTPSA id f6sm25120148wja.25.2014.07.14.05.10.27 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 14 Jul 2014 05:10:28 -0700 (PDT) Message-ID: <53C3C8B2.5020006@gmail.com> Date: Mon, 14 Jul 2014 14:10:26 +0200 From: Huub van Helvoort User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: Loa Andersson , weiqiang cheng , liu.guoman@zte.com.cn References: <53BFC884.1000105@pi.nu> <53C3C0AD.1040903@gmail.com> <53C3C19A.7070506@pi.nu> In-Reply-To: <53C3C19A.7070506@pi.nu> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/lrYTi9sx2Ouu9ixGNiVc563PEYE Cc: "mpls@ietf.org" , "draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org" Subject: Re: [mpls] =?utf-8?b?562U5aSNOiAgW01QTFNdIEFueSBjb21tZW50cyBvbiB0aGUg?= =?utf-8?q?draft_of_MPLS-TP_Shared-Ring_protection_=28MSRP=29_mechanism_fo?= =?utf-8?q?r_ring_topology=E2=80=9D_=3F?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: huubatwork@gmail.com List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Jul 2014 12:10:34 -0000 Hello Loa, You reply: > Are you saying that this can't be done using PSC? That is indeed the case. In PSC the two end nodes A and Z communicate with each-other, there is no need to identify them in the PSC PDU. In RPS a node has to communicate with its adjacent node which has to be identified (in the RPS PDU). > Or just that there is a preference using RPS. The draft explains why we need a dedicated ring protection mechanism. > Or that RPS is what you used? Yes, RPS is used already. Best regards, Huub. > On 2014-07-14 13:36, Huub van Helvoort wrote: >> Hello Loa, >> >> You wrote: >> >>> RFC 7271 took great care to make the PSC and APS identical from an >>> operational point of view; does this mean that PSC (RFC 7271) could >>> be used also? >> >> For an operator the operational functions (lockout, forced switch, >> manual switch exercise, clear) are compatible with PSC/APS. >> >> However: >> One difference with PSC/APS is the PDU format: for ring protection >> a source and destination address are required. >> The other difference is the forwarding and processing of the RPS >> PDUs in each node in the ring. RPS messages are send clockwise >> around the ring, AND RPS messages are send counter-clockwise >> around the ring. >> >> Because of these differences we use RPS because this is dedicated >> to Ring protection (it requires a A-Ch channel type different from >> PSC). >> >> Best regards, Huub. >> >> >>> On 2014-07-11 11:03, weiqiang cheng wrote: >>>> Hi Guoman, >>>> >>>> The "APS" should be "RPS" Ring Protection Switching, and It is >>>> a clerical error. So sorry to make you confused. We will modify it in >>>> late version. >>>> Thanks a lot. >>>> >>>> B.R. >>>> Weiqiang Cheng >>>> >>>> >>>> 2014-07-11 14:51 GMT+08:00 >>> >: >>>> >>>> hi, weiqiang >>>> I have just reviewed this draft and a question for clause 3 >>>> coordination protocol >>>> it seem to have two types protocol , one is RPS protocol in >>>> clause >>>> 3.1. another is APS protocol in clause 3.2. >>>> is it necessary to use the two types of protocol in the mpls-tp >>>> ring protection? >>>> I think the answer is "no". how about it？ >>>> >>>> thank you ! >>>> >>>> B.R. >>>> liu >>>> >>>> *weiqiang cheng >* >>>> å‘件人: "mpls" >>> > >>>> >>>> 2014-07-09 18:41 >>>> >>>> 收件人 >>>> "mpls@ietf.org " >>> >, >>>> æŠ„é€ >>>> "draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org >>>> " >>>> >>> > >>>> 主题 >>>> [mpls] [MPLS] Any comments on the draft of MPLS-TP Shared-Ring >>>> protection (MSRP) mechanism for ring topology†? >>>> >>>> Hi There, >>>> We uploaded the new version draft “MPLS-TP Shared-Ring protection >>>> (MSRP) mechanism for ring topology†>>>> >>>> _https://datatracker.ietf.org/doc/draft-cheng-mpls-tp-shared-ring-protection/_ >>>> >>>> >>>> >>>> >>>> We authors would like to see comments on this draft. Please help to >>>> review it and It would be highly appreciated to send your comments >>>> on the mailing list. >>>> >>>> Thanks, >>>> Weiqiang Cheng_______________________________________________ >> >> >> > -- ***************************************************************** 请记ä½ï¼Œä½ æ˜¯ç‹¬ä¸€æ— äºŒçš„，就åƒå…¶ä»–æ¯ä¸€ä¸ªäººä¸€æ · From nobody Mon Jul 14 08:24:47 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6137F1A0A86 for ; Mon, 14 Jul 2014 08:24:45 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 4.283 X-Spam-Level: **** X-Spam-Status: No, score=4.283 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, CHARSET_FARAWAY_HEADER=3.2, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, IP_NOT_FRIENDLY=0.334, MIME_8BIT_HEADER=0.3, MIME_CHARSET_FARAWAY=2.45, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id A49gO4Wd38hw for ; Mon, 14 Jul 2014 08:24:44 -0700 (PDT) Received: from gproxy8-pub.mail.unifiedlayer.com (gproxy8-pub.mail.unifiedlayer.com [67.222.33.93]) by ietfa.amsl.com (Postfix) with SMTP id 4D3F41A0A9A for ; Mon, 14 Jul 2014 08:24:44 -0700 (PDT) Received: (qmail 27263 invoked by uid 0); 14 Jul 2014 15:24:37 -0000 Received: from unknown (HELO cmgw3) (10.0.90.84) by gproxy8.mail.unifiedlayer.com with SMTP; 14 Jul 2014 15:24:37 -0000 Received: from box313.bluehost.com ([69.89.31.113]) by cmgw3 with id SMQU1o00J2SSUrH01MQXEv; Mon, 14 Jul 2014 15:24:36 -0600 X-Authority-Analysis: v=2.1 cv=fudPOjIf c=1 sm=1 tr=0 a=h1BC+oY+fLhyFmnTBx92Jg==:117 a=ZSdzdHkL1-cA:10 a=0h-4G3Jn0DgA:10 a=HFCU6gKsb0MA:10 a=jPJDawAOAc8A:10 a=XW0vzNQbW2AA:10 a=wU2YTnxGAAAA:8 a=cNaOj0WVAAAA:8 a=-NfooI8aBGcA:10 a=uEJ9t1CZtbIA:10 a=48vgC7mUAAAA:8 a=FTdrIyHOBxr9dhh79YcA:9 a=Spabb166XhwA:10 a=lZB815dzVvQA:10 a=33rK67OTR_gA:10 a=PyHJAHBcnqkA:10 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=labn.net; s=default; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:References:Subject:CC:To:MIME-Version:From:Date:Message-ID; bh=drZQQW/fovSqJ0ECkPZdgtKJ/FhJ1NEc18SUkLeN1Xs=; b=hMSYIKN7RvKmA3NhyXRaqcDZu+4jREqVIEtnCNe9N733TdM0T0PrJUx1n6igp0g+8T997oFq6NQJXbUp1jnKNXs6OQWf/ukuPnv3jTpFBi+KFVQOz64Bw3PLeMHyqy1Y; Received: from box313.bluehost.com ([69.89.31.113]:37479 helo=[127.0.0.1]) by box313.bluehost.com with esmtpa (Exim 4.82) (envelope-from ) id 1X6i7B-0007TZ-Nc; Mon, 14 Jul 2014 09:24:29 -0600 Message-ID: <53C3F62A.8030903@labn.net> Date: Mon, 14 Jul 2014 11:24:26 -0400 From: Lou Berger User-Agent: Mozilla/5.0 (X11; Linux i686; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: =?EUC-KR?B?t/nBpLW/?= References: <53A5ABED.9080408@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28748144@SMTP2.etri.info>, <53B8190E.6080505@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28749702@SMTP2.etri.info>, <53BE7F3B.9010005@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28749804@SMTP2.etri.info>, <53C03687.2000007@labn.net>, <5B4A6CBE3924BB41A3BEE462A8E0B75A28749B0A@SMTP2.etri.info> <5B4A6CBE3924BB41A3BEE462A8E0B75A28749B31@SMTP2.etri.info> In-Reply-To: <5B4A6CBE3924BB41A3BEE462A8E0B75A28749B31@SMTP2.etri.info> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=EUC-KR Content-Transfer-Encoding: 8bit X-Identified-User: {1038:box313.bluehost.com:labnmobi:labn.net} {sentby:smtp auth 69.89.31.113 authed with lberger@labn.net} Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/h8mCVg3yj7jmjzSZOh89vJOjA9g Cc: "rtg-dir@ietf.org" , "mpls@ietf.org" , "draft-ietf-mpls-smp-requirements.all@tools.ietf.org" , "rtg-ads@tools.ietf.org" Subject: Re: [mpls] =?euc-kr?b?W1JURy1ESVJdIMi4vcU6ICDIuL3FOiDIuL3FOiAgIFJ0?= =?euc-kr?q?gDir_review=3A_draft-ietf-mpls-smp-requirements-06=2Etxt?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Jul 2014 15:24:45 -0000 Jeong-dong, Unless I missed something, I think we've closed all topics. Agreed? Much thanks, Lou On 07/11/2014 05:00 PM, ·ùÁ¤µ¿ wrote: > Lou, > > I sent the previous email without showing the proposed text. > The last sentence of the last paragraph in Section 4.1 will be: > ------ > When the reserved resources of the shared segments are utilized by > a particular protection path, there may not be sufficient resources > available for an additional protection path. This then implies that > if another working path of the SMP domain triggers a protection > switch, the resource utilization coordination may fail. > The different working paths in the SMP network are involved in the resource > utilization coordination, which is a part of whole SMP protection switching coordination. > ------ > Please, let me know if there is someting to improve. > > Best regards, > > Jeong-dong > > > ________________________________________ > º¸³½ »ç¶÷: ·ùÁ¤µ¿ > º¸³½ ³¯Â¥: 2014³â 7¿ù 12ÀÏ Åä¿äÀÏ ¿ÀÀü 5:44 > ¹Þ´Â »ç¶÷: Lou Berger > ÂüÁ¶: rtg-dir@ietf.org; mpls@ietf.org; draft-ietf-mpls-smp-requirements.all@tools.ietf.org; rtg-ads@tools.ietf.org > Á¦¸ñ: ȸ½Å: [RTG-DIR] ȸ½Å: ȸ½Å: [mpls] RtgDir review: draft-ietf-mpls-smp-requirements-06.txt > > Lou, > > Certainly, it can be done as you suggested. > I also think that your suggested change would help the readibility of this document. > Thanks a lot for your help. > > Best regards, > > Jeong-dong > > > > ________________________________________ > º¸³½ »ç¶÷: Lou Berger [lberger@labn.net] > º¸³½ ³¯Â¥: 2014³â 7¿ù 12ÀÏ Åä¿äÀÏ ¿ÀÀü 4:09 > ¹Þ´Â »ç¶÷: ·ùÁ¤µ¿ > ÂüÁ¶: rtg-dir@ietf.org; mpls@ietf.org; draft-ietf-mpls-smp-requirements.all@tools.ietf.org; rtg-ads@tools.ietf.org > Á¦¸ñ: Re: [RTG-DIR] ȸ½Å: ȸ½Å: [mpls] RtgDir review: draft-ietf-mpls-smp-requirements-06.txt > > Thank you -- just one response and suggested change. > > Lou > > On 07/10/2014 09:43 AM, ·ùÁ¤µ¿ wrote: >> Lou, >> >> Thank you for agreeing on most of the suggestions. >> Please, see the lines starting with [JR2] below. >> >> Best regards, >> >> Jeong-dong >> >> >> ________________________________________ >> º¸³½ »ç¶÷: Lou Berger [lberger@labn.net] > ... >>> This is fine, but I wonder why you are using "resource utilization" vs >> "protection switch"? (this is actually a bit of a general comment -- I >> the latter is an existing applicable term that would help readers how >> this document fits in to the technology space.) >>> >>> [JR] As described in an earlier part of this section, SMP protection >> consists of two operations: traffic switchover and resource utilization >> coordination. The sentences are about the resource utilization >> coordination, and ¡°resource utilization¡± seems to be more accurate. >> >> Is "resource utilization coordination" done via some form of inter-node >> coordination? If yes, then I think my comment holds. If no, then I >> think you should elabotate on how the "coordination" in this case >> differes from how you use "coordination" elsewhere in the document. >> Either way, I think we've discussed this enough, i.e., I won't push this >> point further. >> >> [JR2] "resource utilization coorination" occurs between the nodes as in other protection switching. "resource utilization coordination" is a part of whole SMP protection switching coordination and is meant to emphasize that coordination is for resource utilization. Of course, the reason why it does resource utilization coordination is to complete protection switching eventually. >> > > Okay. I think adding something along the lines of ""resource utilization > coordination" is a part of whole SMP protection switching coordination " > to the text would clarify your intent to future readers. > ... > From nobody Mon Jul 14 10:08:41 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 69E291A0AE0; Mon, 14 Jul 2014 10:08:37 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -101.901 X-Spam-Level: X-Spam-Status: No, score=-101.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id weil9ZlHFYny; Mon, 14 Jul 2014 10:08:34 -0700 (PDT) Received: from usevmg20.ericsson.net (usevmg20.ericsson.net [198.24.6.45]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 5C2B01A0ADF; Mon, 14 Jul 2014 10:08:34 -0700 (PDT) X-AuditID: c618062d-f79206d0000014d2-d9-53c3bc0ec701 Received: from EUSAAHC004.ericsson.se (Unknown_Domain [147.117.188.84]) by usevmg20.ericsson.net (Symantec Mail Security) with SMTP id 5B.1E.05330.E0CB3C35; Mon, 14 Jul 2014 13:16:30 +0200 (CEST) Received: from EUSAAMB103.ericsson.se ([147.117.188.120]) by EUSAAHC004.ericsson.se ([147.117.188.84]) with mapi id 14.03.0174.001; Mon, 14 Jul 2014 13:08:33 -0400 From: Gregory Mirsky To: Marc Binderberger , Mahesh Jethanandani Thread-Topic: Working Group Last Call for draft-ietf-bfd-intervals (ending July 15) Thread-Index: AQHPmw63Tav428XCvEWNHGxxx+UXq5uXaUMAgAIubgCABdYBgIAAZl4A Date: Mon, 14 Jul 2014 17:08:31 +0000 Message-ID: <7347100B5761DC41A166AC17F22DF1121B7ECAAF@eusaamb103.ericsson.se> References: <20140630163846.GA11842@pfrc> <20140706225103.GB21814@pfrc> <315041E4211CB84E86EF7C25A2AB583D346263F3@xmb-rcd-x15.cisco.com> <20140708212758846800.0b3e2246@sniff.de> <7D7BEA10-A2D0-4948-AC6B-DDAE96490962@gmail.com> <20140713235355131554.386a7bfe@sniff.de> In-Reply-To: <20140713235355131554.386a7bfe@sniff.de> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [147.117.188.10] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrALMWRmVeSWpSXmKPExsUyuXRPiC7fnsPBBgv6zS1mX/nPbHH6zTo2 i1tLV7JafP6zjdGBxWPnrLvsHkuW/GTyaF3dzRLAHMVlk5Kak1mWWqRvl8CVcfLYQtaC2ToV P3qWsjUw3lLuYuTkkBAwkejq7GCBsMUkLtxbz9bFyMUhJHCUUWLuwU3sEM5yRol/774yg1Sx CRhJvNjYww5iiwiESTxcOwvMZhbwkvg/8SMTiC0sECJxYVo/E0RNqMT6LedYuxg5gGw3iQtv 1EDCLAKqEmufbQEbySvgK/HzwHkWiF0LmSW2N50GS3AKmEocPr6HDcRmBLru+6k1TBC7xCVu PZnPBHG1gMSSPeeZIWxRiZeP/7FC2EoSk5aeY4Wo15FYsPsTG4StLbFs4WuoxYISJ2c+YZnA KDYLydhZSFpmIWmZhaRlASPLKkaO0uLUstx0I4NNjMAoOibBpruDcc9Ly0OMAhyMSjy8CqsO BwuxJpYVV+YeYpTmYFES551VOy9YSCA9sSQ1OzW1ILUovqg0J7X4ECMTB6dUA2N6YGmu75a8 wvuVR34k+sdILVbpm8yf/u+0RLcec7c+6xKJlrAga9Ftu/frrF2oL72TKaDca+ax/Ji7dodW z1t9TISxaK/JX7kwjdNBF1O72KXdnx/susPOfO10qeUh1/i3y7fMrzhXcSxxsWa8+AERU8+Z 9Tv52/eeW2kRWsnocc/SW0XHQomlOCPRUIu5qDgRACUuUqiDAgAA Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/EbSLbQuwbbJpCl-P_LmZMqd2nvU Cc: "mpls@ietf.org" , "rtg-bfd@ietf.org" Subject: Re: [mpls] Working Group Last Call for draft-ietf-bfd-intervals (ending July 15) X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Jul 2014 17:08:37 -0000 Hi Marc, Mahesh, et. al, to the best of my knowledge, I've added MPLS WG to the discussion in case I= have missed it, there's no explicit requirement to support 3.3 msec for th= e benefit of MPLS-TP. But as we consider MPLS-TP to be foundation for packe= t-switched transport and that there's explicit requirement to support sub-5= 0 msec protection switchover, then we conclude that, like in TDM transport,= 10 msec is budgeted to detect a defect. Hence CFM/Y.1731 require support o= f 3.3 msec. I think that support of 3.3 msec by a BFD implementation is a r= equirement if sub-50 msec protection to be provided in a network. (Note, th= at actual detection by CFM/Y.1731 and BFD will vary slightly.) Regards, Greg -----Original Message----- From: Rtg-bfd [mailto:rtg-bfd-bounces@ietf.org] On Behalf Of Marc Binderber= ger Sent: Sunday, July 13, 2014 11:54 PM To: Mahesh Jethanandani Cc: rtg-bfd@ietf.org Subject: Re: Working Group Last Call for draft-ietf-bfd-intervals (ending J= uly 15) Hello Mahesh, > That is what happens when you have read the complete draft :-( the full 8 pages, yes ;-) > Question around the explanation provided in Appendix A.=20 >=20 > For 3.3ms: required by MPLS-TP - is there a reference you can cite?=20 > Also, is this a requirement only for MPLS-TP? MPLS-TP was at least driving this requirement. I have to ask my MPLS collea= gues if this has been written down explicitly meanwhile. > The rational for 20ms applies to 10ms (with a multiplier of 3) and explai= ns=20 > the why. Better than saying general consensus and not explaining the why.= =20 > Would you agree? Various people have expressed their strong interest to have 10msec in the s= et=20 of intervals. For various reasons. The ability to detect/restore in 50-60ms= ec=20 is of course important but even more important was the fact that many vendo= rs=20 are about to implement or have already implemented 10msec. That's why I wro= te=20 "general consensus" instead of trying to rationalize the value. Regards, Marc >=20 > On Jul 8, 2014, at 9:27 PM, Marc Binderberger wrote: >=20 >> Hello Mahesh, >>=20 >> appendix A of the draft is explaining the selection. >>=20 >>=20 >> Best regards, >> Marc >>=20 >>=20 >> On Tue, 8 Jul 2014 17:42:41 -0700, Mahesh Jethanandani wrote: >>> Jeff et. all, >>>=20 >>> Having just tried an interoperability BFD test between two vendor boxes= ,=20 >>> I=20 >>> can see why having the defined common intervals would be useful. So yes= ,=20 >>> a=20 >>> support for the draft. >>>=20 >>> Would it be helpful to have some rational for why the said intervals we= re=20 >>> selected? Typical rationals that I have heard for the faster intervals= =20 >>> are=20 >>> that operators want a 50ms protection switchover. For that 3.3ms and 10= ms=20 >>> meet the detection requirements. What goal is 20ms trying to achieve? >>>=20 >>> A 100ms and 1s intervals are helpful for applications that do not have= =20 >>> stringent requirements (e.g. protection of a voice stream) but can=20 >>> benefit=20 >>> from a quick detection. Examples include routing protocols that use BFD= =20 >>> as=20 >>> a hello protocol. >>>=20 >>>=20 >>> On Mon, Jul 7, 2014 at 11:49 AM, Pablo Frank wro= te: >>>> I'm working on a HW implementation that supports the proposed interval= s=20 >>>> and the draft was useful in that context. I can see that the non-Y.17= 31=20 >>>> standard intervals (i.e. 20ms, 50ms) could prove a challenge for some= =20 >>>> existing hardware implementations, but these rates should be within th= e=20 >>>> capability of most software implementations. Even for existing hardwa= re=20 >>>> implementations, since the new rates are a multiple of 10ms, it's=20 >>>> usually=20 >>>> not *that* challenging. So yes/support. >>>>=20 >>>> regards, >>>> Pablo >>>>=20 >>>>=20 >>>>=20 >>>> On Mon, Jul 7, 2014 at 12:12 PM, Vengada Prasad Govindan (venggovi)=20 >>>> wrote: >>>>> Hello Jeff, >>>>> From an implementer's perspective, I see this draft adds value by=20 >>>>> steering implementations towards a point of convergence. I support th= is=20 >>>>> draft for publication. >>>>> Thanks >>>>> Prasad >>>>>=20 >>>>> -----Original Message----- >>>>> From: Rtg-bfd [mailto:rtg-bfd-bounces@ietf.org] On Behalf Of Jeffrey= =20 >>>>> Haas >>>>> Sent: Monday, July 07, 2014 4:21 AM >>>>> To: rtg-bfd@ietf.org >>>>> Subject: Re: Working Group Last Call for draft-ietf-bfd-intervals=20 >>>>> (ending=20 >>>>> July 15) >>>>>=20 >>>>> We are coming up on the second week of this WGLC and have thus far on= ly=20 >>>>> heard from one non-author. :-) Please take a moment and review this= =20 >>>>> draft, especially if you are an implementor. >>>>>=20 >>>>> -- Jeff >>>>>=20 >>>>> On Mon, Jun 30, 2014 at 12:38:46PM -0400, Jeffrey Haas wrote: >>>>>> Working Group, >>>>>>=20 >>>>>> We would like to initiate the start of Working Group Last Call for >>>>>> Common Interval Support in BFD: >>>>>>=20 >>>>>> http://tools.ietf.org/html/draft-ietf-bfd-intervals-01 >>>>>>=20 >>>>>> Note that the intended status of this document is INFORMATIONAL. >>>>>>=20 >>>>>> Please send your comments, including whether you think the draft is >>>>>> ready for publication or not, to the list no later than July 15. >>>>>>=20 >>>>>> -- Jeff and Nobo >>>>>=20 >>>>=20 >>>=20 >>>=20 >>>=20 >>> --=20 >>> Mahesh Jethanandani >>> mjethanandani@gmail.com >=20 > Mahesh Jethanandani > mjethanandani@gmail.com >=20 >=20 >=20 From nobody Mon Jul 14 10:56:43 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D96451AD6B1 for ; Mon, 14 Jul 2014 10:56:39 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 1.437 X-Spam-Level: * X-Spam-Status: No, score=1.437 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, CHARSET_FARAWAY_HEADER=3.2, CN_BODY_35=0.339, MIME_8BIT_HEADER=0.3, MIME_CHARSET_FARAWAY=2.45, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001] autolearn=ham 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-0700 From: Quintin zhao To: Loa Andersson , "mpls@ietf.org" Thread-Topic: Correction - IPR Poll on draft-ietf-mpls-pim-sm-over-mldp Thread-Index: AQHPnSr4cuI19OQIY0uR7t3TUToq0Jubpb8AgAQ4Y7A= Date: Mon, 14 Jul 2014 17:56:28 +0000 Message-ID: <11208E03C9803E4CB4C3D898F153D6C0307C90A3@SJCEML702-CHM.china.huawei.com> References: <53C01A61.5090406@pi.nu> <53C02BE4.2010902@pi.nu> In-Reply-To: <53C02BE4.2010902@pi.nu> Accept-Language: en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.47.130.9] Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/7VZlJF6lwQHvD7YqTCxOLQhf3SY Subject: [mpls] =?gb2312?b?tPC4tDogQ29ycmVjdGlvbiAtICBJUFIgUG9sbCBvbiBk?= =?gb2312?b?cmFmdC1pZXRmLW1wbHMtcGltLXNtLW92ZXItbWxkcA==?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: 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DQo+IChhcyBNUExTIFdHIGNvLWNoYWlyKQ0KPg0K From nobody Mon Jul 14 17:56:10 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 417F81B27EC; Mon, 14 Jul 2014 17:56:08 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -102.251 X-Spam-Level: X-Spam-Status: No, score=-102.251 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, MIME_8BIT_HEADER=0.3, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id JC_caB4swp5g; Mon, 14 Jul 2014 17:56:05 -0700 (PDT) Received: from smtpeg.etri.re.kr (smtpeg1.etri.re.kr [129.254.27.141]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2CCB01B27DA; 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<53C03687.2000007@labn.net>, <5B4A6CBE3924BB41A3BEE462A8E0B75A28749B0A@SMTP2.etri.info> <5B4A6CBE3924BB41A3BEE462A8E0B75A28749B31@SMTP2.etri.info>, <53C3F62A.8030903@labn.net> In-Reply-To: <53C3F62A.8030903@labn.net> Accept-Language: ko-KR, en-US Content-Language: ko-KR X-MS-Has-Attach: X-MS-TNEF-Correlator: x-new-displayname: SmVvbmcgUnlvbw== x-originating-ip: [129.254.28.41] Content-Type: multipart/alternative; boundary="_000_5B4A6CBE3924BB41A3BEE462A8E0B75A28749F56SMTP2etriinfo_" MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/PGmbXQnFqzv-ImXfjPDTqE-2NWQ Cc: "rtg-dir@ietf.org" , "mpls@ietf.org" , "draft-ietf-mpls-smp-requirements.all@tools.ietf.org" , "rtg-ads@tools.ietf.org" Subject: Re: [mpls] =?utf-8?b?W1JURy1ESVJdIO2ajOyLoDogIO2ajOyLoDog7ZqM7IugOiAg?= =?utf-8?q?_RtgDir_review=3A_draft-ietf-mpls-smp-requirements-06=2Etxt?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , 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localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2PWFHt9IRLPh for ; Tue, 15 Jul 2014 01:03:52 -0700 (PDT) Received: from mail-qc0-x22d.google.com (mail-qc0-x22d.google.com [IPv6:2607:f8b0:400d:c01::22d]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 420371A0327 for ; Tue, 15 Jul 2014 01:03:52 -0700 (PDT) Received: by mail-qc0-f173.google.com with SMTP id c9so4562143qcz.4 for ; Tue, 15 Jul 2014 01:03:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=OQwBdqXZILs8lACPp7lgvSP4bhohyBwJp7L/E7Ej6Qw=; b=nsy603Uvd7N9cHFe6YKZOXM/xhnp0poEFJYRt8peOVNsiqimBkVyjbR/Ky3ruKZKo/ atZ8DV15ckgCgo3EEjjuvITsZTwSsts8lTk9uutkgfK1bmd/yYBgnE5JTGUD2mgjrKQj +baJE0Svo7Sef+m/6FrGeRge4vgVCumxqYk6KcAbnRj1CPMKohmBTFkJIJONhZW8sE2y IYsoicn5eUWls+Iylits0NHIPJnm/sZZvlhobgEA0p0neN2GOi/rNXNZyVMCE0QbfYkh 3HGsfQwMlO1XUFb1rwWdoc+0gLxFp95eucfmgs39YNQHiiitjQQixQf2/19/BpLOVOfx A5rA== MIME-Version: 1.0 X-Received: by 10.224.114.138 with SMTP id e10mr29783174qaq.71.1405411431334; Tue, 15 Jul 2014 01:03:51 -0700 (PDT) Received: by 10.224.93.10 with HTTP; Tue, 15 Jul 2014 01:03:51 -0700 (PDT) In-Reply-To: References: Date: Tue, 15 Jul 2014 16:03:51 +0800 Message-ID: From: weiqiang cheng To: =?UTF-8?B?5pu+5bO75rOi?= Content-Type: multipart/alternative; boundary=047d7bea2ee220c92504fe36d9fe Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/6FBjP_e4DLMfbLhzMPXpt7cyWyQ Cc: "mpls@ietf.org" , "draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org" Subject: Re: [mpls] =?utf-8?q?=5BMPLS=5D_Any_comments_on_the_draft_of_MPLS-TP_?= =?utf-8?q?Shared-Ring_protection_=28MSRP=29_mechanism_for_ring_topology?= =?utf-8?b?4oCdID8=?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Jul 2014 08:03:56 -0000 --047d7bea2ee220c92504fe36d9fe Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Bobo, Thank you very much for your comments and suggestions. My answers are in line: 1.according to this draft, there are some dedicated RING TUNNELs used for 'dual-node interconnected rings'. such as the R1cW_F&A, R1aW_F&A, R1cP_F&A, R1aP_F&A and so on,and there are a virtual interconnecting node group composed by node A and node F(in figure 12). a)how to map the virtual interconnecting node to real node. for RING1, the two direction RING TUNNELS,R1cW_F&A,R1aW_F&A,which one will be terminated at node A, and which one will be terminated at node F. what is the rule? [WQ] As 2.5.2.1.mentioned, " - When the service traffic passes through the interconnection node, the direction of the working ring tunnels in each ring for this service traffic should be the same. For example, if the working ring tunnel follows the clockwise direction in Ring1, the working ring tunnel for the same service traffic in Ring2 also follows the clockwise direction when the service leaves Ring1 and enters Ring2." If you follow the rule,following mechanism will be executed: * In normal state: Ring tunnel to interconnected node group will be terminated at the first interconnected node. * If the first interconnected node failure, the traffic will be switched to protection ring tunnel and terminated in another interconnected node. b)in figure 12, node F, i suppose there should be 4 choices when the R2cW_FandA reach F. 1st,when everything is ok, node F should terminate the R2cW_FandA,and enter R2cW_I. 2nd,when link between F and G is fail. node F should terminate the R2cW_FandA,and enter R2aP_I. 3rd, when link between F and G is fail,and the link between F and A is fail too in RING 2. node F should not terminate the R2cW_FandA,and stitch R2cW_FandA to node A. 4th, when link between F and G is fail, and the links between F and A are fail too in RING 2 and RING 1.node F should not terminate the R2cW_FandA,and switch R2cW_FandA to R2cP_FandA,and terminate the RING TUNNEL at node A. i wonder that is the all possibility? and the principle is the path that cross ring take the higher precedence? [WQ] I think you have list all conditions. One comment for 3rd item: When link between F and G is fail,and the link between F and A is fail too in RING 2. node F should not terminate the R1cW_FandA,and switch R1cW_FandA to R1aP_FandA, and terminated the protection ring tunnel at Node A. 2. in the section 5.2.2,P18, it seem the two figure 11 should be figure 12. [WQ] Yes=EF=BC=8Cit is a clerical error. We will correct it in next vers= ion; 3. in the figure 12,between the F and E,there should be a connection that is part of the R1aP_F&A and should mark with 'a'? [WQ] YES=EF=BC=8Cthe protected Ring tunnel is a closed ring. If dest nod= e in ring 2 is not reachedble, traffic will switched to the protection ring tunnel in Node F. B.R. Weiqiang Cheng *From:* =E6=9B=BE=E5=B3=BB=E6=B3=A2 [mailto:zjbdamo@hotmail.com] *Sent:* Tuesday, July 15, 2014 8:38 AM *To:* weiqiang cheng *Cc:* mpls@ietf.org; draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org *Subject:* RE: [mpls] [MPLS] Any comments on the draft of MPLS-TP Shared-Ring protection (MSRP) mechanism for ring topology=E2=80=9D ? hi Weiqiang, please help me to clarify some doubts. 1.according to this draft, there are some dedicated RING TUNNELs used for 'dual-node interconnected rings'. such as the R1cW_F&A, R1aW_F&A, R1cP_F&A, R1aP_F&A and so on,and there are a virtual interconnecting node group composed by node A and node F(in figure 12). a)how to map the virtual interconnecting node to real node. for RING1, the two direction RING TUNNELS,R1cW_F&A,R1aW_F&A,which one will be terminated at node A, and which one will be terminated at node F. what is the rule? b)in figure 12, node F, i suppose there should be 4 choices when the R2cW_FandA reach F. 1st,when everything is ok, node F should terminate the R2cW_FandA,and enter R2cW_I. 2nd,when link between F and G is fail. node F should terminate the R2cW_FandA,and enter R2aP_I. 3rd, when link between F and G is fail,and the link between F and A is fail too in RING 2. node F should not terminate the R2cW_FandA,and stitch R2cW_FandA to node A. 4th, when link between F and G is fail, and the links between F and A are fail too in RING 2 and RING 1.node F should not terminate the R2cW_FandA,and switch R2cW_FandA to R2cP_FandA,and terminate the RING TUNNEL at node A. i wonder that is the all possibility? and the principle is the path that cross ring take the higher precedence? 2. in the section 5.2.2,P18, it seem the two figure 11 should be figure 12. 3. in the figure 12,between the F and E,there should be a connection that is part of the R1aP_F&A and should mark with 'a'? Best Regards! Bobo 2014-07-09 19:07 GMT+08:00 =E6=9B=BE=E5=B3=BB=E6=B3=A2 : > hi,Weiqiang Cheng > i have some question about the > "draft-cheng-mpls-tp-shared-ring-protection-02". > 1. the different between "normal wrapping" and "P2P shout wrapping". > 2. can i use the RING APS protocol defined in G.8132 to implement the > scheme of this document. > 3. for the 'dual-node interconnected rings', there must be the same > forwarding information between node C and node D in figure 11? > > Best Regards! > BoBo > > > ------------------------------ > Date: Wed, 9 Jul 2014 18:41:01 +0800 > From: chengwq@gmail.com > To: mpls@ietf.org > CC: draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org > Subject: [mpls] [MPLS] Any comments on the draft of MPLS-TP Shared-Ring > protection (MSRP) mechanism for ring topology=E2=80=9D ? > > > Hi There, > > We uploaded the new version draft =E2=80=9CMPLS-TP Shared-Ring protection= (MSRP) mechanism for ring topology=E2=80=9D > > https://datatracker.ietf.org/doc/draft-cheng-mpls-tp-shared-ring-protecti= on/ > > We authors would like to see comments on this draft. Please help to revie= w it and It would be highly appreciated to send your comments on the mailin= g list. > > > > Thanks, > > Weiqiang Cheng > > > _______________________________________________ mpls mailing list > mpls@ietf.org https://www.ietf.org/mailman/listinfo/mpls > --047d7bea2ee220c92504fe36d9fe Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

Hi Bobo,

=C2=A0

Thank you very much for you= r comments and suggestions. My answers are in line:

=C2=A0

1.according to this draft, = there are some dedicated RING TUNNELs used for=C2=A0 'dual-node interconnected rings'. such as the R1cW_F&A, R1aW_F&A, R1cP_F&A, R1aP_F&A and so on,and there are a virtual interconnecting node group composed by node A and node F(in figure 12).

=C2=A0=C2=A0=C2=A0 a)how to map the virtual interconnecting node to real node. for RING1, the two direction RING TUNNELS,R1cW_F&A,R1aW_F&A,which one will be terminated at node A, and which one will be terminated=C2=A0 at node F. wha= t is the rule?

=C2=A0=C2=A0=C2=A0 <= /p>

=C2=A0 [WQ] =C2=A0As 2.5.2.1.mentioned, " - When the service traffic passes through the interconnection node, the direction of the working ring tunnels= in each ring for this

=C2=A0=C2=A0 service traffic should be the same.=C2=A0 For example, if the working ring tunnel follows the clockwise direction in Ring1, the working ring

=C2=A0=C2=A0 tunnel for the same service traffic in Ring2 also follows the clockwise direction when the service leaves Ring1 and enters Ring2." If you foll= ow the rule,following mechanism will be executed:

=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0 * In normal state: Ring tunnel to interconnected node group will be terminated at the first interconnected node.

=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0 * If the first interconnected node failure, the traffic will be switched to protection ring tunnel and terminated in another interconnected node.

=C2=A0=C2=A0=C2=A0 <= /p>

=C2=A0=C2=A0=C2=A0 b)in figure 12, node F, i suppose there should be 4 choices when the R2cW_FandA reach F.

=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0 1st,when everything is ok, node F should terminate the R2cW_FandA,and enter R2cW_I.

=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0 2nd,when link between F and G is fail. node F should terminate the R2cW_FandA,and enter R2aP_I.

=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0 3rd, when link between F and G is fail,and the link between F and A is fail too in RING 2. node F should not terminate the R2cW_FandA,and stitch R2cW_FandA to node A.

=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0 4th, when link between F and G is fail, and the links between F and A are fail too in RING 2 and RING 1.node F should not terminate the R2cW_FandA,and switch R2cW_FandA to R2cP_FandA,and terminate the RING TUNNE= L at node A.

=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0 i wonder that is the all possibility? and the principle is the path that cross ring take the higher precedence?



=C2=A0=C2=A0 [WQ] I think you have list all conditions. One comment for 3rd item:=

=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0 When link between F and G is fail,and the link between F and A is fail too in RING 2. node F should not terminate the R1cW_FandA,and switch R1cW_F= andA to R1aP_FandA, and terminated the protection ring tunnel at Node A.=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0

=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0

2. in the section 5.2.2,P18= , it seem the two figure 11 should be figure 12.

=C2=A0

=C2=A0=C2=A0 [WQ] Yes=EF=BC= =8Cit is a clerical error. We will correct it in next version;

3.

in the figure 12,between th= e F and E,there should be a connection that is part

of the R1aP_F&A and sho= uld mark with 'a'?


=

=C2=A0=C2=A0 [WQ] YES=EF=BC= =8Cthe protected Ring tunnel is a closed ring. If dest node in ring 2 is not reachedble, traffic will switched to the protection ring tunnel in Node F.<= /span>

=C2=A0=C2=A0

B.R.

Weiqiang Cheng

=C2=A0

From: =E6=9B=BE=E5=B3=BB=E6=B3=A2 [mailto:zjbdamo@hotmail.com] Sent: Tuesday, July 15, 2014 8:38 AM
To: weiqiang cheng
Cc: mpls@ietf.org; draft-cheng-mpls-tp-shared-ring-protection@tools.ietf.org
Subject: RE: [mpls] [MPLS] Any comments on the draft of MPLS-TP Shared-Ring protection (MSRP) mechanism for ring topology=E2=80=9D ?=

=C2=A0

hi Weiq= iang,
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 please help me to clarify some doubts.=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 1.according to this draft, there are s= ome dedicated RING TUNNELs used for=C2=A0 'dual-node interconnected rings&#= 39;. such as the R1cW_F&A, R1aW_F&A, R1cP_F&A, R1aP_F&A and so on,and th= ere are a virtual interconnecting node group composed by node A and node F(in figure 12).
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 a)how to map t= he virtual interconnecting node to real node. for RING1, the two direction RIN= G TUNNELS,R1cW_F&A,R1aW_F&A,which one will be terminated at node A, a= nd which one will be terminated=C2=A0 at node F. what is the rule?
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 b)in figure 12= , node F, i suppose there should be 4 choices when the R2cW_FandA reach F. =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0 1st,when everything is ok, node F should terminate the R2cW_FandA,and enter R2cW_I.
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0 2nd,when link between F and G is fail. node F should terminate the R2cW_FandA,and enter R2aP_I.
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0 3rd, when link between F and G is fail,and the link between F and A is fail= too in RING 2. node F should not terminate the R2cW_FandA,and stitch R2cW_FandA= to node A.
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0 4th, when link between F and G is fail, and the links between F and A are f= ail too in RING 2 and RING 1.node F should not terminate the R2cW_FandA,and swi= tch R2cW_FandA to R2cP_FandA,and terminate the RING TUNNEL at node A.
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0 i wonder that is the all possibility? and the principle is the path that cr= oss ring take the higher precedence?
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 2. in the section 5.2.2,P18, it seem t= he two figure 11 should be figure 12.
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 3. in the figure 12,between the F and E,there should be a connection that is part of the R1aP_F&A and should = mark with 'a'?

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Best Regards!
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Bobo



2014-07-09 19:07 G= MT+08:00 =E6=9B=BE=E5=B3=BB=E6=B3=A2 <zjbdamo@hotmail.com>= :
hi,Weiqiang Cheng
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 i= have some question about the "draft-cheng-mpls-tp-shared-ring-protect= ion-02".
=C2=A0 1.=C2=A0 the different between "normal wrappin= g" and "P2P shout wrapping".
=C2=A0 2.=C2=A0 can i use the RING APS protocol defined in G.8132 to implem= ent the scheme of this document.
=C2=A0 3.=C2=A0 for the 'dual-node = interconnected rings', there must be the same forwarding information be= tween node C and node D in figure 11?

Best Regards!
BoBo


Date: Wed, 9 Jul 2014 18:41:= 01 +0800
From: ch= engwq@gmail.com
To: mpls@ietf.org
CC: draft-cheng-mpls-tp-shared-ring-protection@tools.ie= tf.org
Subject: [mpls] [MPLS] Any comments on the draft of MPLS-TP S= hared-Ring protection (MSRP) mechanism for ring topology=E2=80=9D ?


Hi The=
re,
We uploaded the new version draft=
 =E2=80=9CMPLS-TP Shared-Ring protection (MSRP)=
 mechanism for ring topology=E2=80=9D
https://datatrack=
er.ietf.org/doc/draft-cheng-mpls-tp-shared-ring-protection/

We authors would like to see comments on this dra=
ft. Please help to review it and It would be highly appreciated to send you=
r comments on the mailing list.


=C2=A0
Than=
ks,
Weiqiang Cheng

_______________________________________________ mpls mailing list mpls@ietf.org ht= tps://www.ietf.org/mailman/listinfo/mpls

--047d7bea2ee220c92504fe36d9fe-- From nobody Tue Jul 15 05:16:06 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 995D91B287B for ; Tue, 15 Jul 2014 05:16:02 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -6.9 X-Spam-Level: X-Spam-Status: No, score=-6.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hf8g4yEkExRr for ; Tue, 15 Jul 2014 05:15:54 -0700 (PDT) Received: from hoemail1.alcatel.com (hoemail1.alcatel.com [192.160.6.148]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C19541A038C for ; Tue, 15 Jul 2014 05:15:54 -0700 (PDT) Received: from fr711usmtp1.zeu.alcatel-lucent.com (h135-239-2-122.lucent.com [135.239.2.122]) by hoemail1.alcatel.com (8.13.8/IER-o) with ESMTP id s6FCFqBg012555 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Tue, 15 Jul 2014 07:15:53 -0500 (CDT) Received: from FR711WXCHHUB02.zeu.alcatel-lucent.com (fr711wxchhub02.zeu.alcatel-lucent.com [135.239.2.112]) by fr711usmtp1.zeu.alcatel-lucent.com (GMO) with ESMTP id s6FCFn5G002112 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL) for ; Tue, 15 Jul 2014 14:15:51 +0200 Received: from [172.27.205.228] (135.239.27.41) by FR711WXCHHUB02.zeu.alcatel-lucent.com (135.239.2.112) with Microsoft SMTP Server (TLS) id 14.2.247.3; Tue, 15 Jul 2014 14:15:50 +0200 Message-ID: <53C51B75.9000008@alcatel-lucent.com> Date: Tue, 15 Jul 2014 14:15:49 +0200 From: Martin Vigoureux User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [135.239.27.41] Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/NPQ2ANuU8xtJ-xPB0qrLYM2UM8c Subject: [mpls] IETF90 - MPLS - Agenda available - Please send your presentation material X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Jul 2014 12:16:03 -0000 All, the agenda is on-line: http://www.ietf.org/proceedings/90/agenda/agenda-90-mpls Please have a look at it. Speakers, please start sending me your presentation material, and please do so before July the 21st (Monday), local time. Thank you Martin From nobody Tue Jul 15 09:48:52 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6154B1A0AAE; Tue, 15 Jul 2014 09:48:49 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.201 X-Spam-Level: X-Spam-Status: No, score=-2.201 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HELO_EQ_DE=0.35, RP_MATCHES_RCVD=-0.651] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2muNqw7EqZv0; Tue, 15 Jul 2014 09:48:46 -0700 (PDT) Received: from door.sniff.de (door.sniff.de [IPv6:2001:6f8:94f:1::1]) by ietfa.amsl.com (Postfix) with ESMTP id F0E3E1B28B6; Tue, 15 Jul 2014 09:48:45 -0700 (PDT) Received: from [IPv6:::1] (localhost.sniff.de [127.0.0.1]) by door.sniff.de (Postfix) with ESMTP id F31882AA0F; Tue, 15 Jul 2014 16:48:42 +0000 (GMT) Date: Tue, 15 Jul 2014 09:49:02 -0700 From: Marc Binderberger To: Gregory Mirsky Message-ID: <20140715094902199916.194f6b23@sniff.de> In-Reply-To: <7347100B5761DC41A166AC17F22DF1121B7ECAAF@eusaamb103.ericsson.se> References: <20140630163846.GA11842@pfrc> <20140706225103.GB21814@pfrc> <315041E4211CB84E86EF7C25A2AB583D346263F3@xmb-rcd-x15.cisco.com> <20140708212758846800.0b3e2246@sniff.de> <7D7BEA10-A2D0-4948-AC6B-DDAE96490962@gmail.com> <20140713235355131554.386a7bfe@sniff.de> <7347100B5761DC41A166AC17F22DF1121B7ECAAF@eusaamb103.ericsson.se> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: GyazMail version 1.5.15 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/EcBqXb1Ew8elmSqVtnCu15xx_f0 Cc: "mpls@ietf.org" , "rtg-bfd@ietf.org" Subject: Re: [mpls] Working Group Last Call for draft-ietf-bfd-intervals (ending July 15) X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Jul 2014 16:48:49 -0000 Hello Greg et al., indeed, I got a similar feedback from my colleagues working on MPLS-TP. Have to look into the particular documents (e.g. G.783) to see it with my own eyes but it seems the budget is 10msec detection + 50msec restoration. Always thought it's the other way around. Then the 10msec detection time lead to 3 x 3.3msec, yes. I will update our document with a sentence, especially as I haven't found any IETF reference (draft/RFC) with an explicit requirement for MPLS-TP. It's "borrowed" from Sonet/SDH specs. Thanks for confirming! Regards, Martc On Mon, 14 Jul 2014 17:08:31 +0000, Gregory Mirsky wrote: > Hi Marc, Mahesh, et. al, > to the best of my knowledge, I've added MPLS WG to the discussion in case I > have missed it, there's no explicit requirement to support 3.3 msec for the > benefit of MPLS-TP. But as we consider MPLS-TP to be foundation for > packet-switched transport and that there's explicit requirement to support > sub-50 msec protection switchover, then we conclude that, like in TDM > transport, 10 msec is budgeted to detect a defect. Hence CFM/Y.1731 require > support of 3.3 msec. I think that support of 3.3 msec by a BFD > implementation is a requirement if sub-50 msec protection to be provided in > a network. (Note, that actual detection by CFM/Y.1731 and BFD will vary > slightly.) > > Regards, > Greg > > -----Original Message----- > From: Rtg-bfd [mailto:rtg-bfd-bounces@ietf.org] On Behalf Of Marc > Binderberger > Sent: Sunday, July 13, 2014 11:54 PM > To: Mahesh Jethanandani > Cc: rtg-bfd@ietf.org > Subject: Re: Working Group Last Call for draft-ietf-bfd-intervals (ending > July 15) > > Hello Mahesh, > >> That is what happens when you have read the complete draft :-( > > the full 8 pages, yes ;-) > > >> Question around the explanation provided in Appendix A. >> >> For 3.3ms: required by MPLS-TP - is there a reference you can cite? >> Also, is this a requirement only for MPLS-TP? > > MPLS-TP was at least driving this requirement. I have to ask my MPLS > colleagues if this has been written down explicitly meanwhile. > > >> The rational for 20ms applies to 10ms (with a multiplier of 3) and >> explains >> the why. Better than saying general consensus and not explaining the why. >> Would you agree? > > Various people have expressed their strong interest to have 10msec in the > set > of intervals. For various reasons. The ability to detect/restore in > 50-60msec > is of course important but even more important was the fact that many > vendors > are about to implement or have already implemented 10msec. That's why I > wrote > "general consensus" instead of trying to rationalize the value. > > > Regards, Marc > > >> >> On Jul 8, 2014, at 9:27 PM, Marc Binderberger wrote: >> >>> Hello Mahesh, >>> >>> appendix A of the draft is explaining the selection. >>> >>> >>> Best regards, >>> Marc >>> >>> >>> On Tue, 8 Jul 2014 17:42:41 -0700, Mahesh Jethanandani wrote: >>>> Jeff et. all, >>>> >>>> Having just tried an interoperability BFD test between two vendor boxes, >>>> I >>>> can see why having the defined common intervals would be useful. So yes, >>>> a >>>> support for the draft. >>>> >>>> Would it be helpful to have some rational for why the said intervals >>>> were >>>> selected? Typical rationals that I have heard for the faster intervals >>>> are >>>> that operators want a 50ms protection switchover. For that 3.3ms and >>>> 10ms >>>> meet the detection requirements. What goal is 20ms trying to achieve? >>>> >>>> A 100ms and 1s intervals are helpful for applications that do not have >>>> stringent requirements (e.g. protection of a voice stream) but can >>>> benefit >>>> from a quick detection. Examples include routing protocols that use BFD >>>> as >>>> a hello protocol. >>>> >>>> >>>> On Mon, Jul 7, 2014 at 11:49 AM, Pablo Frank >>>> wrote: >>>>> I'm working on a HW implementation that supports the proposed intervals >>>>> and the draft was useful in that context. I can see that the >>>>> non-Y.1731 >>>>> standard intervals (i.e. 20ms, 50ms) could prove a challenge for some >>>>> existing hardware implementations, but these rates should be within the >>>>> capability of most software implementations. Even for existing >>>>> hardware >>>>> implementations, since the new rates are a multiple of 10ms, it's >>>>> usually >>>>> not *that* challenging. So yes/support. >>>>> >>>>> regards, >>>>> Pablo >>>>> >>>>> >>>>> >>>>> On Mon, Jul 7, 2014 at 12:12 PM, Vengada Prasad Govindan (venggovi) >>>>> wrote: >>>>>> Hello Jeff, >>>>>> From an implementer's perspective, I see this draft adds value by >>>>>> steering implementations towards a point of convergence. I support >>>>>> this >>>>>> draft for publication. >>>>>> Thanks >>>>>> Prasad >>>>>> >>>>>> -----Original Message----- >>>>>> From: Rtg-bfd [mailto:rtg-bfd-bounces@ietf.org] On Behalf Of Jeffrey >>>>>> Haas >>>>>> Sent: Monday, July 07, 2014 4:21 AM >>>>>> To: rtg-bfd@ietf.org >>>>>> Subject: Re: Working Group Last Call for draft-ietf-bfd-intervals >>>>>> (ending >>>>>> July 15) >>>>>> >>>>>> We are coming up on the second week of this WGLC and have thus far >>>>>> only >>>>>> heard from one non-author. :-) Please take a moment and review this >>>>>> draft, especially if you are an implementor. >>>>>> >>>>>> -- Jeff >>>>>> >>>>>> On Mon, Jun 30, 2014 at 12:38:46PM -0400, Jeffrey Haas wrote: >>>>>>> Working Group, >>>>>>> >>>>>>> We would like to initiate the start of Working Group Last Call for >>>>>>> Common Interval Support in BFD: >>>>>>> >>>>>>> http://tools.ietf.org/html/draft-ietf-bfd-intervals-01 >>>>>>> >>>>>>> Note that the intended status of this document is INFORMATIONAL. >>>>>>> >>>>>>> Please send your comments, including whether you think the draft is >>>>>>> ready for publication or not, to the list no later than July 15. >>>>>>> >>>>>>> -- Jeff and Nobo >>>>>> >>>>> >>>> >>>> >>>> >>>> -- >>>> Mahesh Jethanandani >>>> mjethanandani@gmail.com >> >> Mahesh Jethanandani >> mjethanandani@gmail.com >> >> >> > From nobody Wed Jul 16 19:24:12 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 848641A040C for ; Wed, 16 Jul 2014 19:24:10 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -115.152 X-Spam-Level: X-Spam-Status: No, score=-115.152 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id oIc0Yl6SamAR for ; Wed, 16 Jul 2014 19:24:08 -0700 (PDT) Received: from rcdn-iport-3.cisco.com (rcdn-iport-3.cisco.com [173.37.86.74]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 5E2D11A03CA for ; Wed, 16 Jul 2014 19:24:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=5238; q=dns/txt; s=iport; t=1405563848; x=1406773448; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=X8Yu0V9CPfm2zb7NtnVv9A7pDFzMHptGRBXEz4t1HPE=; b=Ofxm2tiOjUq/5T7XJiiKp0mN8us4CoDZnVEJGlzQobuWRd8bnfA+i4nn Xe0cWszx+XeNIdGITl6qpE1JNLGDjcXD6yUkiQo5vRjzHkAybX5FxukeP EFcvFMQhC3aHmlk+maq15aCQf1pbMgM6KJGfixlJkq56jF5Sn57S/RuF6 o=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AjoFAHIyx1OtJA2K/2dsb2JhbABZgmokUlcEwy8Kh0IBgQgWdoQDAQEBBAEBAQssKwkLDAQCAQgRBAEBCxQJBycLFAkIAQEEAQ0FCBOIJwEMyiEXjxoxBwaDJ4EWBZxpkmCDRGyBRQ X-IronPort-AV: E=Sophos;i="5.01,675,1400025600"; d="scan'208";a="340609024" Received: from alln-core-5.cisco.com ([173.36.13.138]) by rcdn-iport-3.cisco.com with ESMTP; 17 Jul 2014 02:24:07 +0000 Received: from xhc-rcd-x08.cisco.com (xhc-rcd-x08.cisco.com [173.37.183.82]) by alln-core-5.cisco.com (8.14.5/8.14.5) with ESMTP id s6H2O7x0024651 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Thu, 17 Jul 2014 02:24:07 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-rcd-x08.cisco.com ([173.37.183.82]) with mapi id 14.03.0123.003; Wed, 16 Jul 2014 21:24:07 -0500 From: "Nobo Akiya (nobo)" To: Ravi Singh , "draft-ravisingh-mpls-el-for-seamless-mpls@tools.ietf.org" Thread-Topic: Comments on draft-ravisingh-mpls-el-for-seamless-mpls Thread-Index: Ac7bkJ2xL0omkkvnRZ2jAuXiLdjyFTBm3teAAQjoYdA= Date: Thu, 17 Jul 2014 02:24:06 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.243.219] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/_2NxTt42Dnz7bUvKyyYqND1PCCc Cc: "mpls@ietf.org" Subject: Re: [mpls] Comments on draft-ravisingh-mpls-el-for-seamless-mpls X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Jul 2014 02:24:10 -0000 Hi Ravi, et al, [comment 1] The document seems to be describing two different topics. 1. Data plane behavior regarding ELI/EL with stitched and/or hierarchical L= SPs. 2. How to extend EL usage wider than actual capabilities of involved LSRs. I agree that the two topics are rather related, but I find (1) to be a very= useful information to vendors and (2) to be an optimization. Is there any particular reason why the two topics cannot be broken up into = two separate documents? That may result in much clearer documents. [comment 2] >From what I understand of the data plane behaviors, they boil down to follo= wing 4 things. Behavior for an ingress LSR programmed to push [transport label(s), ELI, EL= ]: a. The LSR SHOULD NOT push [ELI, EL] if the label stack already contain [EL= I, EL], and SHOULD only push [transport label(s)]. b. If the LSR popping N transport labels includes popping of [ELI, EL], the= LSR MAY reuse the popped [EL] value when needing to push [ELI, EL]. c. If the LSR popping N transport labels expose [ELI, EL] as top labels, th= e LSR MAY preserve the exposed [ELI, EL] in the label stack and only push [= transport label(s)]. Behavior for an ingress LSR of ELC-not-capable LSP: d. The LSR MUST ensure [ELI, EL] do not immediately follow label(s) pushed = or swapped by the LSR. Note, in the document, (a) is described as a procedure if [ELI, EL] are fou= nd under the top label only, but I don't think we need to make such restric= tion. Section 4.3. does is likely the reason why you restricted this to the= top label only, but I prefer that this rule be kept simple and not restric= ted. If you really want to ensure that [ELI, EL] appears near the top, the= n additional rule will do the job. a-variant: The LSR SHOULD NOT push [ELI, EL] if the label stack already con= tain [ELI, EL], and SHOULD only push [transport label(s)]. The LSR MAY stil= l push [transport label(s), ELI, EL] if [ELI, EL] found is deep in the labe= l stack. Do above (a-d), more or less, align with data plane rules you have in mind? [comment 3 (nitpick)] [snip from draft-ravisingh-mpls-el-for-seamless-mpls-02] 3. Key attributes of the entropy label solution: Summary from [EL-RFC] [...] - Transport-label-POPing router POPs (ELI+EL) PHR/egress of the LSP is responsible for POPing off the (ELI+EL) after it has been exposed as the top label on the packet due to POPing the transport label. The removal of the (ELI+EL) is done either when the ELI is the top label; or when the ELI is next label below the top label being POPed. It's a bit of a nitpick, but above is probably not an accurate reflection o= f RFC6790 regarding Penultimate Hop LSR behavior, as RFC6790 states: [snip from RFC6790] 4.4. Penultimate Hop LSR No change is needed at penultimate hop LSRs. However, a PHP LSR that recognizes the ELI MAY choose to pop the ELI and following label (which should be an entropy label) in addition to popping the tunnel label, provided that doing so doesn't diminish its ability to load balance on the next hop. Thanks! -Nobo > -----Original Message----- > From: Ravi Singh [mailto:ravis@juniper.net] > Sent: Friday, July 11, 2014 1:21 PM > To: Nobo Akiya (nobo); draft-ravisingh-mpls-el-for-seamless- > mpls@tools.ietf.org > Cc: mpls@ietf.org > Subject: RE: Comments on draft-ravisingh-mpls-el-for-seamless-mpls >=20 > Hi Nobo > We have a new version of this draft: > http://tools.ietf.org/html/draft-ravisingh-mpls-el-for-seamless- > mpls-02 >=20 >=20 > > -----Original Message----- > > From: mpls-bounces@ietf.org [mailto:mpls-bounces@ietf.org] On Behalf > > Of Nobo Akiya (nobo) > > Sent: Thursday, November 07, 2013 12:23 AM > > To: draft-ravisingh-mpls-el-for-seamless-mpls@tools.ietf.org > > Cc: mpls@ietf.org > > Subject: [mpls] Comments on draft-ravisingh-mpls-el-for-seamless-mpls > > > > Hi Ravi, Yimin, > > > > I have couple of comments. > > > > 1. Stitched LSP - Proposed really offers optimization in stitched > > scenario. > > > > a. Allows EL usage for even wider than just EL capable segments. > > b. Potentially speeds data traversal over stitched LSP as number of > > times ELI/EL popped/pushed are reduced. > > > > Document sort of eludes to this, but I think it'll be beneficial to > > state that things will work as is (RFC6790), but proposal can be used > > as optimization. >=20 > The optimization aspect has been called out in the latest version. >=20 >=20 > > 2. Hierarchical LSP > > > > > B. Preventing multiple (ELI+EL) pairs underneath a given forwarding > > > label in the stack: > > > > I highly support above statement. Having multiple ELs in the stack > > will, yet again, cause more changes required in LSP traceroute wrt > > multipath information handling, and requires even more complex > > computation by initiator to traverse ECMP paths. >=20 > Great that we are in agreement. > Ravi >=20 >=20 >=20 > > -Nobo > > > > _______________________________________________ > > mpls mailing list > > mpls@ietf.org > > https://www.ietf.org/mailman/listinfo/mpls > > From nobody Thu Jul 17 17:51:14 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 02F411B28CB for ; Thu, 17 Jul 2014 17:51:10 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -114.502 X-Spam-Level: X-Spam-Status: No, score=-114.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hsKHc9KQGGvl for ; Thu, 17 Jul 2014 17:51:05 -0700 (PDT) Received: from rcdn-iport-8.cisco.com (rcdn-iport-8.cisco.com [173.37.86.79]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id E0A431B28E5 for ; Thu, 17 Jul 2014 17:51:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=4272; q=dns/txt; s=iport; t=1405644665; x=1406854265; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=WlmCndU0OJy23QDxtoEwOCT/5erqdCWTOIFvnPJ6XjM=; b=H8k+RjRWMZBlvBSsnprpu7GgBPSICTPfK1H8NTiXXy6W7wLUAxtPqbPa ie0zAxbuhot5t0dJhuXabihMzY/1Und4fu3gl+N52jzFlfq5YYIYDCHEs TlSdXcJ5AeC1D6FdlAJxn+I0kY2khLNLtEFvNu2rHDHMz+o+FbVnDSFDu 8=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AhoFAApvyFOtJV2U/2dsb2JhbABZgmokUlcExAIKhiKBIQGBCRZ2hAMBAQEEAQEBNzEDCwwCAgIBCBEEAQELFAUEBxsMCxQJCAIEAQ0FCBOIJwEMxTsTBASOZRACAR4xBwaDKIEYBa9LggKBQmyBRQ X-IronPort-AV: E=Sophos;i="5.01,681,1400025600"; d="scan'208";a="340911268" Received: from rcdn-core-12.cisco.com ([173.37.93.148]) by rcdn-iport-8.cisco.com with ESMTP; 18 Jul 2014 00:50:58 +0000 Received: from xhc-aln-x15.cisco.com (xhc-aln-x15.cisco.com [173.36.12.89]) by rcdn-core-12.cisco.com (8.14.5/8.14.5) with ESMTP id s6I0ovNW009560 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Fri, 18 Jul 2014 00:50:57 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-aln-x15.cisco.com ([173.36.12.89]) with mapi id 14.03.0123.003; Thu, 17 Jul 2014 19:50:57 -0500 From: "Nobo Akiya (nobo)" To: Loa Andersson , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , Adrian Farrel Thread-Topic: [mpls] Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document Thread-Index: AQHPmeuyvEqL5d1/1ESW4A59wRYjn5ukwbEw Date: Fri, 18 Jul 2014 00:50:56 +0000 Message-ID: References: <53BAA7BA.2060903@pi.nu> In-Reply-To: <53BAA7BA.2060903@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.255.162] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/sg-PNl-5G6pBq1pSyMgIODobMHM Cc: "draft-bryant-mpls-oam-udp-return@tools.ietf.org" Subject: Re: [mpls] Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Jul 2014 00:51:10 -0000 Hi Loa, I have read the document and on-list discussions around this document. I believe this document solves a necessary problem, and I believe the desir= e to define a solution based on the LMAP framework should not block the pro= gress of this document (i.e. the two should be pursued independently). Therefore, I support the adoption of this document as a WG document. Below lists few comments which I would like to see addressed, but not block= ers before becoming a WG document. [snip from Section 4] If the URO is expected but is not present in Query message and an MPLS-PLDM Response is requested out-of-band, the Query message MUST NOT be processed further. If received over a bidirectional LSP, the control code of the Response message MUST be set to "Error - Missing TLV" and a Response SHOULD be sent over the reverse LSP. [snip from Section 4.3] If an Out-of-band response is requested and the Address object or the URO is missing, the Query SHOULD be dropped in the case of a unidirectional LSP. If both these TLVs are missing on a bidirectional LSP, the control code of Response message should set to "Invalid Message" and the response SHOULD be sent over the reverse LSP. Both snippets are describing the same procedure but there's a conflict with= control code value mandated. =3D> "Missing TLV" (TBD) vs. "Invalid Message" (0x1C) In the second snippet from Section 4.3 above, I believe the condition shoul= d be && and not ||. s/and the Address object or the URO is missing/and the Address object and t= he URO are missing/ [snip from Section 5] Nothing in this document precludes the use of a configured UDP/IP return path in a deployment in which configuration is preferred to signalling. In these circumstances the URO MAY be omitted from the MPLS-PLDM messages. I'd like to propose a slightly different text, because such configuration m= ay be to setup a default target for the response, in which case URO will be= more preferred. [suggested text] Nothing in this document precludes the use of a configured UDP/IP return path that is more preferred than the target specified in received UROs. In these circumstances, the UROs in received MPLS-PM Query MAY be ignored. Alternatively use of a configured UDP/IP return path as a default target may be specified (i.e. less preferred than UROs). In these circumstances, the absence of the UROs in received MPLS-PM Query SHOULD NOT be treated as an error. --- nits --- [Abstract] s/proceedure/procedure/ [Introduction, last paragraph] s/reponse/response/ [Solution Overview, first paragraph] s/querry/query/ [Sending an MPLS-PM Response, second paragraph] s/incuded/included/ [Sending an MPLS-PM Response, second paragraph] s/Session Indentifier/Session Identifier/ Thanks! -Nobo > -----Original Message----- > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Loa Andersson > Sent: Monday, July 07, 2014 9:59 AM > To: mpls@ietf.org; mpls-chairs@tools.ietf.org; Adrian Farrel > Cc: draft-bryant-mpls-oam-udp-return@tools.ietf.org > Subject: [mpls] Poll to see if we have support to make draft-bryant-mpls- > oam-udp-return an mpls working group document >=20 > Working Group, >=20 >=20 > The authors of draft-bryant-mpls-oam-udp-return has informed us that the > draft is ready to be polled to see if we have consensus to make it a work= ing > group document. >=20 > This mail starts a two week adoption poll. >=20 > We have not yet done the IPR poll, it will be done in parallel to the ado= ption > poll. >=20 > There are no IPR disclosed against this draft. >=20 > Please send your comments to the mpls working group mailing list > (mpls@ietf.org) >=20 > This adoption poll ends Juli 21, 2014! >=20 > /Loa > for the mpls wg co-chairs >=20 > -- >=20 >=20 > Loa Andersson email: loa@mail01.huawei.com > Senior MPLS Expert loa@pi.nu > Huawei Technologies (consultant) phone: +46 739 81 21 64 >=20 > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls From nobody Thu Jul 17 18:59:07 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 451DF1A03A9; Thu, 17 Jul 2014 18:59:03 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.202 X-Spam-Level: X-Spam-Status: No, score=-4.202 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 9SkSv6TXLqXK; Thu, 17 Jul 2014 18:59:01 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 031BC1A01BA; Thu, 17 Jul 2014 18:59:00 -0700 (PDT) Received: from 172.18.7.190 (EHLO lhreml401-hub.china.huawei.com) ([172.18.7.190]) by lhrrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id BHH71716; Fri, 18 Jul 2014 01:58:59 +0000 (GMT) Received: from NKGEML406-HUB.china.huawei.com (10.98.56.37) by lhreml401-hub.china.huawei.com (10.201.5.240) with Microsoft SMTP Server (TLS) id 14.3.158.1; Fri, 18 Jul 2014 02:58:59 +0100 Received: from NKGEML512-MBS.china.huawei.com ([169.254.8.48]) by nkgeml406-hub.china.huawei.com ([10.98.56.37]) with mapi id 14.03.0158.001; Fri, 18 Jul 2014 09:58:52 +0800 From: Xuxiaohu To: "mpls@ietf.org" Thread-Topic: How to carry metadata/context in an MPLS packet Thread-Index: Ac+iK9IiUw61Lt1oTZi1TxTMkTltPw== Date: Fri, 18 Jul 2014 01:58:51 +0000 Message-ID: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08294118@NKGEML512-MBS.china.huawei.com> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.111.98.134] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/z_f8fxDLiagTbvS9Q4S5qJcwSHM Cc: "" , "sfc@ietf.org" Subject: [mpls] How to carry metadata/context in an MPLS packet X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Jul 2014 01:59:03 -0000 Hi all, I'm now considering how to carry metadata/context in an MPLS packet. I just= noticed that draft-guichard-mpls-metadata-00 (http://tools.ietf.org/html/d= raft-guichard-mpls-metadata-00#page-6) proposes a way to carry metadata/con= text in an MPLS packet (see below): "3. Metadata Channel Header Format The presence of metadata within an MPLS packet must be indicated in the encapsulation. This document defines that the G-ACh Generic Associated Channel Label (GAL) [RFC5586] with label value 13 is utilized for this purpose. The GAL label provides a method to identify that a packet contains an "Associated Channel Header (ACH)" followed by a non-service payload. [RFC5586] identifies the G-ACh Generic Associated Channel by setting the first nibble of the ACH that immediately follows the bottom label in the stack if the GAL label is present, to 0001b. Further [RFC5586] expects that the ACH not be used to carry user data traffic. This document proposes an extension to allow the first nibble of the ACH to be set to 0000b and, when following the GAL, be interpreted using the semantics defined in [I-D.guichard-metadata-header] to allow metadata to be carried through the G-ACh channel." However, it seems that the special usage of the GAL as mentioned above stil= l conflicts with the following statement quoted from [RFC5586]: " The GAL MUST NOT appear in the label stack when transporting normal user-plane packets. Furthermore, when present, the GAL MUST NOT appear more than once in the label stack." I wonder whether the special usage of the GAL as proposed in the above draf= t would result in any backward compatibility issue. In addition, I wonder w= hether it's worthwhile to reconsider the possibility of introducing a Proto= col Type (PT) field immediately after the bottom of the MPLS label stack. W= ith such PT field, any kind of future MPLS payload (e.g., metadata header o= r NSH) can be easily identified. Best regards, Xiaohu From nobody Thu Jul 17 20:11:05 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id AE1591A0422; Thu, 17 Jul 2014 20:11:03 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.201 X-Spam-Level: X-Spam-Status: No, score=-4.201 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id DGCejJ-K_QkV; Thu, 17 Jul 2014 20:11:01 -0700 (PDT) Received: from mail1.bemta3.messagelabs.com (mail1.bemta3.messagelabs.com [195.245.230.163]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A02191A0417; Thu, 17 Jul 2014 20:11:00 -0700 (PDT) Received: from [85.158.137.99:58985] by server-3.bemta-3.messagelabs.com id BC/A8-08876-24098C35; Fri, 18 Jul 2014 03:10:58 +0000 X-Env-Sender: l.wood@surrey.ac.uk X-Msg-Ref: server-15.tower-217.messagelabs.com!1405653058!22628557!1 X-Originating-IP: [131.227.200.35] X-StarScan-Received: X-StarScan-Version: 6.11.3; banners=-,-,- X-VirusChecked: Checked Received: (qmail 22524 invoked from network); 18 Jul 2014 03:10:58 -0000 Received: from exht021p.surrey.ac.uk (HELO EXHT021P.surrey.ac.uk) (131.227.200.35) by server-15.tower-217.messagelabs.com with AES128-SHA encrypted SMTP; 18 Jul 2014 03:10:58 -0000 Received: from EXHY022V.surrey.ac.uk (131.227.201.104) by EXHT021P.surrey.ac.uk (131.227.200.35) with Microsoft SMTP Server (TLS) id 8.3.348.2; Fri, 18 Jul 2014 04:10:58 +0100 Received: from emea01-am1-obe.outbound.protection.outlook.com (131.227.201.241) by EXHY022v.surrey.ac.uk (131.227.201.104) with Microsoft SMTP Server (TLS) id 14.3.181.6; Fri, 18 Jul 2014 04:10:57 +0100 Received: from AMSPR06MB439.eurprd06.prod.outlook.com (10.242.23.19) by AMSPR06MB438.eurprd06.prod.outlook.com (10.242.23.15) with Microsoft SMTP Server (TLS) id 15.0.985.8; Fri, 18 Jul 2014 03:10:57 +0000 Received: from AMSPR06MB439.eurprd06.prod.outlook.com ([10.242.23.19]) by AMSPR06MB439.eurprd06.prod.outlook.com ([10.242.23.19]) with mapi id 15.00.0985.008; Fri, 18 Jul 2014 03:10:57 +0000 From: To: , Thread-Topic: How to carry metadata/context in an MPLS packet Thread-Index: Ac+iK9IiUw61Lt1oTZi1TxTMkTltPwACfNZj Date: Fri, 18 Jul 2014 03:10:56 +0000 Message-ID: <1405653056176.39234@surrey.ac.uk> References: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08294118@NKGEML512-MBS.china.huawei.com> In-Reply-To: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08294118@NKGEML512-MBS.china.huawei.com> Accept-Language: en-AU, en-US Content-Language: en-AU X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [122.200.59.30] x-microsoft-antispam: BCL:0;PCL:0;RULEID: x-forefront-prvs: 02760F0D1C x-forefront-antispam-report: SFV:NSPM; SFS:(6009001)(53754006)(377454003)(199002)(189002)(107046002)(54356999)(46102001)(19580395003)(50986999)(4396001)(95666004)(74482001)(99396002)(66066001)(86362001)(19580405001)(15395725005)(81342001)(81542001)(105586002)(76482001)(15975445006)(36756003)(20776003)(31966008)(85306003)(74502001)(92566001)(83072002)(83322001)(77982001)(15198665003)(85852003)(79102001)(64706001)(80022001)(74662001)(101416001)(76176999)(21056001)(15202345003)(2656002)(106356001)(87936001)(92726001); DIR:OUT; SFP:; SCL:1; SRVR:AMSPR06MB438; H:AMSPR06MB439.eurprd06.prod.outlook.com; FPR:; MLV:sfv; PTR:InfoNoRecords; MX:1; LANG:en; Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OrganizationHeadersPreserved: AMSPR06MB438.eurprd06.prod.outlook.com X-CrossPremisesHeadersFiltered: EXHY022v.surrey.ac.uk Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/mJ3nc18pGcJANCO3PEm7nkqrUiw Cc: spring@ietf.org, sfc@ietf.org Subject: Re: [mpls] How to carry metadata/context in an MPLS packet X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Jul 2014 03:11:03 -0000 How? A better question is "why?"=0A= =0A= What has to be done in MPLS that cannot be done outside it?=0A= =0A= Lloyd Wood=0A= http://about.me/lloydwood=0A= ________________________________________=0A= From: mpls on behalf of Xuxiaohu =0A= Sent: Friday, 18 July 2014 11:58 AM=0A= To: mpls@ietf.org=0A= Cc: ; sfc@ietf.org=0A= Subject: [mpls] How to carry metadata/context in an MPLS packet=0A= =0A= Hi all,=0A= =0A= I'm now considering how to carry metadata/context in an MPLS packet. I just= noticed that draft-guichard-mpls-metadata-00 (http://tools.ietf.org/html/d= raft-guichard-mpls-metadata-00#page-6) proposes a way to carry metadata/con= text in an MPLS packet (see below):=0A= =0A= "3. Metadata Channel Header Format=0A= =0A= The presence of metadata within an MPLS packet must be indicated in=0A= the encapsulation. This document defines that the G-ACh Generic=0A= Associated Channel Label (GAL) [RFC5586] with label value 13 is=0A= utilized for this purpose. The GAL label provides a method to=0A= identify that a packet contains an "Associated Channel Header (ACH)"=0A= followed by a non-service payload.=0A= =0A= [RFC5586] identifies the G-ACh Generic Associated Channel by setting=0A= the first nibble of the ACH that immediately follows the bottom label=0A= in the stack if the GAL label is present, to 0001b. Further=0A= [RFC5586] expects that the ACH not be used to carry user data=0A= traffic. This document proposes an extension to allow the first=0A= nibble of the ACH to be set to 0000b and, when following the GAL, be=0A= interpreted using the semantics defined in=0A= [I-D.guichard-metadata-header] to allow metadata to be carried=0A= through the G-ACh channel."=0A= =0A= However, it seems that the special usage of the GAL as mentioned above stil= l conflicts with the following statement quoted from [RFC5586]:=0A= =0A= " The GAL MUST NOT appear in the label stack when transporting normal=0A= user-plane packets. Furthermore, when present, the GAL MUST NOT=0A= appear more than once in the label stack."=0A= =0A= I wonder whether the special usage of the GAL as proposed in the above draf= t would result in any backward compatibility issue. In addition, I wonder w= hether it's worthwhile to reconsider the possibility of introducing a Proto= col Type (PT) field immediately after the bottom of the MPLS label stack. W= ith such PT field, any kind of future MPLS payload (e.g., metadata header o= r NSH) can be easily identified.=0A= =0A= Best regards,=0A= Xiaohu=0A= =0A= _______________________________________________=0A= mpls mailing list=0A= mpls@ietf.org=0A= https://www.ietf.org/mailman/listinfo/mpls=0A= From nobody Thu Jul 17 20:18:05 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6EFAB1B286B; Thu, 17 Jul 2014 20:17:59 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.202 X-Spam-Level: X-Spam-Status: No, score=-4.202 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id zfwJrI66UM8C; Thu, 17 Jul 2014 20:17:58 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 1FBE31A0495; Thu, 17 Jul 2014 20:17:56 -0700 (PDT) Received: from 172.18.7.190 (EHLO lhreml405-hub.china.huawei.com) ([172.18.7.190]) by lhrrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id BHH76308; Fri, 18 Jul 2014 03:17:55 +0000 (GMT) Received: from NKGEML406-HUB.china.huawei.com (10.98.56.37) by lhreml405-hub.china.huawei.com (10.201.5.242) with Microsoft SMTP Server (TLS) id 14.3.158.1; Fri, 18 Jul 2014 04:17:54 +0100 Received: from NKGEML512-MBS.china.huawei.com ([169.254.8.48]) by nkgeml406-hub.china.huawei.com ([10.98.56.37]) with mapi id 14.03.0158.001; Fri, 18 Jul 2014 11:17:51 +0800 From: Xuxiaohu To: "l.wood@surrey.ac.uk" , "mpls@ietf.org" Thread-Topic: How to carry metadata/context in an MPLS packet Thread-Index: Ac+iK9IiUw61Lt1oTZi1TxTMkTltPwACfNZjAAAtuoA= Date: Fri, 18 Jul 2014 03:17:51 +0000 Message-ID: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08294173@NKGEML512-MBS.china.huawei.com> References: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08294118@NKGEML512-MBS.china.huawei.com> <1405653056176.39234@surrey.ac.uk> In-Reply-To: <1405653056176.39234@surrey.ac.uk> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.111.98.134] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/uU_OXzPxCVGbMLNDnojkchM3Iqg Cc: "spring@ietf.org" , "sfc@ietf.org" Subject: Re: [mpls] How to carry metadata/context in an MPLS packet X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Jul 2014 03:17:59 -0000 The presence of metadata within an MPLS packet must be indicated in the enc= apsulation. I think that's the "why" you may want to know. Best regards, Xiaohu > -----Original Message----- > From: l.wood@surrey.ac.uk [mailto:l.wood@surrey.ac.uk] > Sent: Friday, July 18, 2014 11:11 AM > To: Xuxiaohu; mpls@ietf.org > Cc: spring@ietf.org; sfc@ietf.org > Subject: RE: How to carry metadata/context in an MPLS packet >=20 > How? A better question is "why?" >=20 > What has to be done in MPLS that cannot be done outside it? >=20 > Lloyd Wood > http://about.me/lloydwood > ________________________________________ > From: mpls on behalf of Xuxiaohu > > Sent: Friday, 18 July 2014 11:58 AM > To: mpls@ietf.org > Cc: ; sfc@ietf.org > Subject: [mpls] How to carry metadata/context in an MPLS packet >=20 > Hi all, >=20 > I'm now considering how to carry metadata/context in an MPLS packet. I ju= st > noticed that draft-guichard-mpls-metadata-00 > (http://tools.ietf.org/html/draft-guichard-mpls-metadata-00#page-6) propo= ses > a way to carry metadata/context in an MPLS packet (see below): >=20 > "3. Metadata Channel Header Format >=20 > The presence of metadata within an MPLS packet must be indicated in > the encapsulation. This document defines that the G-ACh Generic > Associated Channel Label (GAL) [RFC5586] with label value 13 is > utilized for this purpose. The GAL label provides a method to > identify that a packet contains an "Associated Channel Header (ACH)" > followed by a non-service payload. >=20 > [RFC5586] identifies the G-ACh Generic Associated Channel by setting > the first nibble of the ACH that immediately follows the bottom label > in the stack if the GAL label is present, to 0001b. Further > [RFC5586] expects that the ACH not be used to carry user data > traffic. This document proposes an extension to allow the first > nibble of the ACH to be set to 0000b and, when following the GAL, be > interpreted using the semantics defined in > [I-D.guichard-metadata-header] to allow metadata to be carried > through the G-ACh channel." >=20 > However, it seems that the special usage of the GAL as mentioned above st= ill > conflicts with the following statement quoted from [RFC5586]: >=20 > " The GAL MUST NOT appear in the label stack when transporting normal > user-plane packets. Furthermore, when present, the GAL MUST NOT > appear more than once in the label stack." >=20 > I wonder whether the special usage of the GAL as proposed in the above dr= aft > would result in any backward compatibility issue. In addition, I wonder w= hether > it's worthwhile to reconsider the possibility of introducing a Protocol T= ype (PT) > field immediately after the bottom of the MPLS label stack. With such PT = field, > any kind of future MPLS payload (e.g., metadata header or NSH) can be eas= ily > identified. >=20 > Best regards, > Xiaohu >=20 > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls From nobody Thu Jul 17 20:22:35 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id EC8611B286B; Thu, 17 Jul 2014 20:22:32 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tYvBqc935G2I; Thu, 17 Jul 2014 20:22:31 -0700 (PDT) Received: from mail1.bemta5.messagelabs.com (mail1.bemta5.messagelabs.com [195.245.231.150]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 777A41A0418; Thu, 17 Jul 2014 20:22:30 -0700 (PDT) Received: from [195.245.231.67:51838] by server-14.bemta-5.messagelabs.com id 1C/47-11783-5F298C35; Fri, 18 Jul 2014 03:22:29 +0000 X-Env-Sender: l.wood@surrey.ac.uk X-Msg-Ref: server-12.tower-82.messagelabs.com!1405653747!39396238!6 X-Originating-IP: [131.227.200.39] X-StarScan-Received: X-StarScan-Version: 6.11.3; banners=-,-,- X-VirusChecked: Checked Received: (qmail 5082 invoked from network); 18 Jul 2014 03:22:28 -0000 Received: from exht012p.surrey.ac.uk (HELO EXHT012P.surrey.ac.uk) (131.227.200.39) by server-12.tower-82.messagelabs.com with AES128-SHA encrypted SMTP; 18 Jul 2014 03:22:28 -0000 Received: from EXHY011V.surrey.ac.uk (131.227.200.103) by EXHT012P.surrey.ac.uk (131.227.200.39) with Microsoft SMTP Server (TLS) id 8.3.348.2; Fri, 18 Jul 2014 04:22:27 +0100 Received: from emea01-am1-obe.outbound.protection.outlook.com (131.227.200.4) by email365.surrey.ac.uk (131.227.200.103) with Microsoft SMTP Server (TLS) id 14.3.181.6; Fri, 18 Jul 2014 04:22:26 +0100 Received: from AMSPR06MB439.eurprd06.prod.outlook.com (10.242.23.19) by AMSPR06MB437.eurprd06.prod.outlook.com (10.242.23.11) with Microsoft SMTP Server (TLS) id 15.0.985.8; Fri, 18 Jul 2014 03:22:26 +0000 Received: from AMSPR06MB439.eurprd06.prod.outlook.com ([10.242.23.19]) by AMSPR06MB439.eurprd06.prod.outlook.com ([10.242.23.19]) with mapi id 15.00.0985.008; Fri, 18 Jul 2014 03:22:26 +0000 From: To: , Thread-Topic: How to carry metadata/context in an MPLS packet Thread-Index: Ac+iK9IiUw61Lt1oTZi1TxTMkTltPwACfNZjAAAtuoAAADRSVw== Date: Fri, 18 Jul 2014 03:22:26 +0000 Message-ID: <1405653745773.33083@surrey.ac.uk> References: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08294118@NKGEML512-MBS.china.huawei.com> <1405653056176.39234@surrey.ac.uk>, <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08294173@NKGEML512-MBS.china.huawei.com> In-Reply-To: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08294173@NKGEML512-MBS.china.huawei.com> Accept-Language: en-AU, en-US Content-Language: en-AU X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [122.200.59.30] x-microsoft-antispam: BCL:0;PCL:0;RULEID: x-forefront-prvs: 02760F0D1C x-forefront-antispam-report: SFV:NSPM; SFS:(6009001)(51444003)(53754006)(51704005)(13464003)(199002)(189002)(377454003)(83322001)(64706001)(66066001)(20776003)(76176999)(87936001)(15975445006)(50986999)(19580405001)(95666004)(54356999)(101416001)(105586002)(85306003)(107046002)(76482001)(46102001)(92566001)(36756003)(15395725005)(19580395003)(77982001)(74662001)(79102001)(86362001)(74502001)(4396001)(2656002)(106356001)(31966008)(92726001)(85852003)(81542001)(83072002)(81342001)(21056001)(15202345003)(99396002)(74482001)(15198665003)(80022001); DIR:OUT; SFP:; SCL:1; SRVR:AMSPR06MB437; H:AMSPR06MB439.eurprd06.prod.outlook.com; FPR:; MLV:sfv; PTR:InfoNoRecords; MX:1; LANG:en; Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OrganizationHeadersPreserved: AMSPR06MB437.eurprd06.prod.outlook.com X-OriginatorOrg: surrey.ac.uk X-CrossPremisesHeadersPromoted: EXHY011v.surrey.ac.uk X-CrossPremisesHeadersFiltered: EXHY011v.surrey.ac.uk Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/t9dSsJtHPSlTOU3H2Og3e7ehLdg Cc: spring@ietf.org, sfc@ietf.org Subject: Re: [mpls] How to carry metadata/context in an MPLS packet X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Jul 2014 03:22:33 -0000 No, my "why" is "why have metadata in the MPLS header at all"?=0A= =0A= Why does this have to be done inband?=0A= =0A= I am questioning the basis for doing this. There is no "must" here.=0A= =0A= Lloyd Wood=0A= http://about.me/lloydwood=0A= ________________________________________=0A= From: Xuxiaohu =0A= Sent: Friday, 18 July 2014 1:17 PM=0A= To: Wood L Dr (Electronic Eng); mpls@ietf.org=0A= Cc: spring@ietf.org; sfc@ietf.org=0A= Subject: RE: How to carry metadata/context in an MPLS packet=0A= =0A= The presence of metadata within an MPLS packet must be indicated in the enc= apsulation. I think that's the "why" you may want to know.=0A= =0A= Best regards,=0A= Xiaohu=0A= =0A= > -----Original Message-----=0A= > From: l.wood@surrey.ac.uk [mailto:l.wood@surrey.ac.uk]=0A= > Sent: Friday, July 18, 2014 11:11 AM=0A= > To: Xuxiaohu; mpls@ietf.org=0A= > Cc: spring@ietf.org; sfc@ietf.org=0A= > Subject: RE: How to carry metadata/context in an MPLS packet=0A= >=0A= > How? A better question is "why?"=0A= >=0A= > What has to be done in MPLS that cannot be done outside it?=0A= >=0A= > Lloyd Wood=0A= > http://about.me/lloydwood=0A= > ________________________________________=0A= > From: mpls on behalf of Xuxiaohu=0A= > =0A= > Sent: Friday, 18 July 2014 11:58 AM=0A= > To: mpls@ietf.org=0A= > Cc: ; sfc@ietf.org=0A= > Subject: [mpls] How to carry metadata/context in an MPLS packet=0A= >=0A= > Hi all,=0A= >=0A= > I'm now considering how to carry metadata/context in an MPLS packet. I ju= st=0A= > noticed that draft-guichard-mpls-metadata-00=0A= > (http://tools.ietf.org/html/draft-guichard-mpls-metadata-00#page-6) propo= ses=0A= > a way to carry metadata/context in an MPLS packet (see below):=0A= >=0A= > "3. Metadata Channel Header Format=0A= >=0A= > The presence of metadata within an MPLS packet must be indicated in=0A= > the encapsulation. This document defines that the G-ACh Generic=0A= > Associated Channel Label (GAL) [RFC5586] with label value 13 is=0A= > utilized for this purpose. The GAL label provides a method to=0A= > identify that a packet contains an "Associated Channel Header (ACH)"= =0A= > followed by a non-service payload.=0A= >=0A= > [RFC5586] identifies the G-ACh Generic Associated Channel by setting= =0A= > the first nibble of the ACH that immediately follows the bottom label= =0A= > in the stack if the GAL label is present, to 0001b. Further=0A= > [RFC5586] expects that the ACH not be used to carry user data=0A= > traffic. This document proposes an extension to allow the first=0A= > nibble of the ACH to be set to 0000b and, when following the GAL, be= =0A= > interpreted using the semantics defined in=0A= > [I-D.guichard-metadata-header] to allow metadata to be carried=0A= > through the G-ACh channel."=0A= >=0A= > However, it seems that the special usage of the GAL as mentioned above st= ill=0A= > conflicts with the following statement quoted from [RFC5586]:=0A= >=0A= > " The GAL MUST NOT appear in the label stack when transporting normal=0A= > user-plane packets. Furthermore, when present, the GAL MUST NOT=0A= > appear more than once in the label stack."=0A= >=0A= > I wonder whether the special usage of the GAL as proposed in the above dr= aft=0A= > would result in any backward compatibility issue. In addition, I wonder w= hether=0A= > it's worthwhile to reconsider the possibility of introducing a Protocol T= ype (PT)=0A= > field immediately after the bottom of the MPLS label stack. With such PT = field,=0A= > any kind of future MPLS payload (e.g., metadata header or NSH) can be eas= ily=0A= > identified.=0A= >=0A= > Best regards,=0A= > Xiaohu=0A= >=0A= > _______________________________________________=0A= > mpls mailing list=0A= > mpls@ietf.org=0A= > https://www.ietf.org/mailman/listinfo/mpls=0A= From nobody Thu Jul 17 23:33:24 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C198D1B28FC; Thu, 17 Jul 2014 23:33:22 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.202 X-Spam-Level: X-Spam-Status: No, score=-4.202 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id JbBcOU5Ffr7q; Thu, 17 Jul 2014 23:33:20 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 374361B28F9; Thu, 17 Jul 2014 23:33:19 -0700 (PDT) Received: from 172.18.7.190 (EHLO lhreml404-hub.china.huawei.com) ([172.18.7.190]) by lhrrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id BHH87825; Fri, 18 Jul 2014 06:33:17 +0000 (GMT) Received: from NKGEML402-HUB.china.huawei.com (10.98.56.33) by lhreml404-hub.china.huawei.com (10.201.5.218) with Microsoft SMTP Server (TLS) id 14.3.158.1; Fri, 18 Jul 2014 07:33:16 +0100 Received: from NKGEML512-MBS.china.huawei.com ([169.254.8.48]) by nkgeml402-hub.china.huawei.com ([10.98.56.33]) with mapi id 14.03.0158.001; Fri, 18 Jul 2014 14:33:10 +0800 From: Xuxiaohu To: "l.wood@surrey.ac.uk" , "mpls@ietf.org" Thread-Topic: How to carry metadata/context in an MPLS packet Thread-Index: Ac+iK9IiUw61Lt1oTZi1TxTMkTltPwACfNZjAAAtuoAAADRSVwAGdgOQ Date: Fri, 18 Jul 2014 06:33:09 +0000 Message-ID: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE082941BF@NKGEML512-MBS.china.huawei.com> References: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08294118@NKGEML512-MBS.china.huawei.com> <1405653056176.39234@surrey.ac.uk>, <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08294173@NKGEML512-MBS.china.huawei.com> <1405653745773.33083@surrey.ac.uk> In-Reply-To: <1405653745773.33083@surrey.ac.uk> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.111.98.134] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/w7v8sTUXWTZJ3Gd5kmdkkCF2pr4 Cc: "spring@ietf.org" , "sfc@ietf.org" Subject: Re: [mpls] How to carry metadata/context in an MPLS packet X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Jul 2014 06:33:23 -0000 > -----Original Message----- > From: l.wood@surrey.ac.uk [mailto:l.wood@surrey.ac.uk] > Sent: Friday, July 18, 2014 11:22 AM > To: Xuxiaohu; mpls@ietf.org > Cc: spring@ietf.org; sfc@ietf.org > Subject: RE: How to carry metadata/context in an MPLS packet >=20 > No, my "why" is "why have metadata in the MPLS header at all"? You could choose to carry the metadata context instead of the metadata itse= lf in the data packet (See section 3.5 of the following draft (http://tools= .ietf.org/html/draft-rijsman-sfc-metadata-considerations-00#page-8)). > Why does this have to be done inband? It doesn't have to be done inband. However, since In-band marking (see sect= ion 3.1 of the following draft (http://tools.ietf.org/html/draft-rijsman-sf= c-metadata-considerations-00#page-8)) ) is one of the approaches of metadat= a sharing, I'm just considering how to realize that in-band approach in the= MPLS case. Best regards, Xiaohu > I am questioning the basis for doing this. There is no "must" here. >=20 > Lloyd Wood > http://about.me/lloydwood > ________________________________________ > From: Xuxiaohu > Sent: Friday, 18 July 2014 1:17 PM > To: Wood L Dr (Electronic Eng); mpls@ietf.org > Cc: spring@ietf.org; sfc@ietf.org > Subject: RE: How to carry metadata/context in an MPLS packet >=20 > The presence of metadata within an MPLS packet must be indicated in the > encapsulation. I think that's the "why" you may want to know. >=20 > Best regards, > Xiaohu >=20 > > -----Original Message----- > > From: l.wood@surrey.ac.uk [mailto:l.wood@surrey.ac.uk] > > Sent: Friday, July 18, 2014 11:11 AM > > To: Xuxiaohu; mpls@ietf.org > > Cc: spring@ietf.org; sfc@ietf.org > > Subject: RE: How to carry metadata/context in an MPLS packet > > > > How? A better question is "why?" > > > > What has to be done in MPLS that cannot be done outside it? > > > > Lloyd Wood > > http://about.me/lloydwood > > ________________________________________ > > From: mpls on behalf of Xuxiaohu > > > > Sent: Friday, 18 July 2014 11:58 AM > > To: mpls@ietf.org > > Cc: ; sfc@ietf.org > > Subject: [mpls] How to carry metadata/context in an MPLS packet > > > > Hi all, > > > > I'm now considering how to carry metadata/context in an MPLS packet. I > > just noticed that draft-guichard-mpls-metadata-00 > > (http://tools.ietf.org/html/draft-guichard-mpls-metadata-00#page-6) > > proposes a way to carry metadata/context in an MPLS packet (see below): > > > > "3. Metadata Channel Header Format > > > > The presence of metadata within an MPLS packet must be indicated in > > the encapsulation. This document defines that the G-ACh Generic > > Associated Channel Label (GAL) [RFC5586] with label value 13 is > > utilized for this purpose. The GAL label provides a method to > > identify that a packet contains an "Associated Channel Header (ACH)" > > followed by a non-service payload. > > > > [RFC5586] identifies the G-ACh Generic Associated Channel by setting > > the first nibble of the ACH that immediately follows the bottom labe= l > > in the stack if the GAL label is present, to 0001b. Further > > [RFC5586] expects that the ACH not be used to carry user data > > traffic. This document proposes an extension to allow the first > > nibble of the ACH to be set to 0000b and, when following the GAL, be > > interpreted using the semantics defined in > > [I-D.guichard-metadata-header] to allow metadata to be carried > > through the G-ACh channel." > > > > However, it seems that the special usage of the GAL as mentioned above > > still conflicts with the following statement quoted from [RFC5586]: > > > > " The GAL MUST NOT appear in the label stack when transporting normal > > user-plane packets. Furthermore, when present, the GAL MUST NOT > > appear more than once in the label stack." > > > > I wonder whether the special usage of the GAL as proposed in the above > > draft would result in any backward compatibility issue. In addition, I > > wonder whether it's worthwhile to reconsider the possibility of > > introducing a Protocol Type (PT) field immediately after the bottom of > > the MPLS label stack. With such PT field, any kind of future MPLS > > payload (e.g., metadata header or NSH) can be easily identified. > > > > Best regards, > > Xiaohu > > > > _______________________________________________ > > mpls mailing list > > mpls@ietf.org > > https://www.ietf.org/mailman/listinfo/mpls From nobody Thu Jul 17 23:42:16 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 01B921B2906; Thu, 17 Jul 2014 23:42:13 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.202 X-Spam-Level: X-Spam-Status: No, score=-4.202 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2OIgelks77rO; Thu, 17 Jul 2014 23:42:11 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 36AB11B2904; Thu, 17 Jul 2014 23:42:10 -0700 (PDT) Received: from 172.18.7.190 (EHLO lhreml403-hub.china.huawei.com) ([172.18.7.190]) by lhrrg01-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id BKF19478; Fri, 18 Jul 2014 06:42:08 +0000 (GMT) Received: from NKGEML402-HUB.china.huawei.com (10.98.56.33) by lhreml403-hub.china.huawei.com (10.201.5.217) with Microsoft SMTP Server (TLS) id 14.3.158.1; Fri, 18 Jul 2014 07:42:07 +0100 Received: from NKGEML512-MBS.china.huawei.com ([169.254.8.48]) by nkgeml402-hub.china.huawei.com ([10.98.56.33]) with mapi id 14.03.0158.001; Fri, 18 Jul 2014 14:41:56 +0800 From: Xuxiaohu To: Xuxiaohu , "l.wood@surrey.ac.uk" , "mpls@ietf.org" Thread-Topic: How to carry metadata/context in an MPLS packet Thread-Index: Ac+iK9IiUw61Lt1oTZi1TxTMkTltPwACfNZjAAAtuoAAADRSVwAGdgOQAAB4rkA= Date: Fri, 18 Jul 2014 06:41:55 +0000 Message-ID: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE082941CD@NKGEML512-MBS.china.huawei.com> References: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08294118@NKGEML512-MBS.china.huawei.com> <1405653056176.39234@surrey.ac.uk>, <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08294173@NKGEML512-MBS.china.huawei.com> <1405653745773.33083@surrey.ac.uk> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.111.98.134] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/BDIjnn7NoYjDUUnvKr8z-AJnC3U Cc: "spring@ietf.org" , "sfc@ietf.org" Subject: Re: [mpls] How to carry metadata/context in an MPLS packet X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Jul 2014 06:42:13 -0000 > -----Original Message----- > From: Xuxiaohu > Sent: Friday, July 18, 2014 2:33 PM > To: 'l.wood@surrey.ac.uk'; mpls@ietf.org > Cc: spring@ietf.org; sfc@ietf.org > Subject: RE: How to carry metadata/context in an MPLS packet >=20 >=20 >=20 > > -----Original Message----- > > From: l.wood@surrey.ac.uk [mailto:l.wood@surrey.ac.uk] > > Sent: Friday, July 18, 2014 11:22 AM > > To: Xuxiaohu; mpls@ietf.org > > Cc: spring@ietf.org; sfc@ietf.org > > Subject: RE: How to carry metadata/context in an MPLS packet > > > > No, my "why" is "why have metadata in the MPLS header at all"? >=20 > You could choose to carry the metadata context instead of the metadata it= self in > the data packet (See section 3.5 of the following draft > (http://tools.ietf.org/html/draft-rijsman-sfc-metadata-considerations-00#= page- > 8)). >=20 > > Why does this have to be done inband? >=20 > It doesn't have to be done inband. However, since In-band marking (see se= ction > 3.1 of the following draft > (http://tools.ietf.org/html/draft-rijsman-sfc-metadata-considerations-00#= page- > 8)) ) is one of the approaches of metadata sharing, I'm just considering = how to > realize that in-band approach in the MPLS case. >=20 > Best regards, > Xiaohu >=20 > > I am questioning the basis for doing this. There is no "must" here. By the way, you are right that carrying metadata or metadata context within= data packets is optional, rather than mandatory. Best regards, Xiaohu > > Lloyd Wood > > http://about.me/lloydwood > > ________________________________________ > > From: Xuxiaohu > > Sent: Friday, 18 July 2014 1:17 PM > > To: Wood L Dr (Electronic Eng); mpls@ietf.org > > Cc: spring@ietf.org; sfc@ietf.org > > Subject: RE: How to carry metadata/context in an MPLS packet > > > > The presence of metadata within an MPLS packet must be indicated in > > the encapsulation. I think that's the "why" you may want to know. > > > > Best regards, > > Xiaohu > > > > > -----Original Message----- > > > From: l.wood@surrey.ac.uk [mailto:l.wood@surrey.ac.uk] > > > Sent: Friday, July 18, 2014 11:11 AM > > > To: Xuxiaohu; mpls@ietf.org > > > Cc: spring@ietf.org; sfc@ietf.org > > > Subject: RE: How to carry metadata/context in an MPLS packet > > > > > > How? A better question is "why?" > > > > > > What has to be done in MPLS that cannot be done outside it? > > > > > > Lloyd Wood > > > http://about.me/lloydwood > > > ________________________________________ > > > From: mpls on behalf of Xuxiaohu > > > > > > Sent: Friday, 18 July 2014 11:58 AM > > > To: mpls@ietf.org > > > Cc: ; sfc@ietf.org > > > Subject: [mpls] How to carry metadata/context in an MPLS packet > > > > > > Hi all, > > > > > > I'm now considering how to carry metadata/context in an MPLS packet. > > > I just noticed that draft-guichard-mpls-metadata-00 > > > (http://tools.ietf.org/html/draft-guichard-mpls-metadata-00#page-6) > > > proposes a way to carry metadata/context in an MPLS packet (see below= ): > > > > > > "3. Metadata Channel Header Format > > > > > > The presence of metadata within an MPLS packet must be indicated i= n > > > the encapsulation. This document defines that the G-ACh Generic > > > Associated Channel Label (GAL) [RFC5586] with label value 13 is > > > utilized for this purpose. The GAL label provides a method to > > > identify that a packet contains an "Associated Channel Header (ACH= )" > > > followed by a non-service payload. > > > > > > [RFC5586] identifies the G-ACh Generic Associated Channel by setti= ng > > > the first nibble of the ACH that immediately follows the bottom la= bel > > > in the stack if the GAL label is present, to 0001b. Further > > > [RFC5586] expects that the ACH not be used to carry user data > > > traffic. This document proposes an extension to allow the first > > > nibble of the ACH to be set to 0000b and, when following the GAL, = be > > > interpreted using the semantics defined in > > > [I-D.guichard-metadata-header] to allow metadata to be carried > > > through the G-ACh channel." > > > > > > However, it seems that the special usage of the GAL as mentioned > > > above still conflicts with the following statement quoted from [RFC55= 86]: > > > > > > " The GAL MUST NOT appear in the label stack when transporting norma= l > > > user-plane packets. Furthermore, when present, the GAL MUST NOT > > > appear more than once in the label stack." > > > > > > I wonder whether the special usage of the GAL as proposed in the > > > above draft would result in any backward compatibility issue. In > > > addition, I wonder whether it's worthwhile to reconsider the > > > possibility of introducing a Protocol Type (PT) field immediately > > > after the bottom of the MPLS label stack. With such PT field, any > > > kind of future MPLS payload (e.g., metadata header or NSH) can be eas= ily > identified. > > > > > > Best regards, > > > Xiaohu > > > > > > _______________________________________________ > > > mpls mailing list > > > mpls@ietf.org > > > https://www.ietf.org/mailman/listinfo/mpls From nobody Fri Jul 18 00:43:52 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 283AE1A031B; Fri, 18 Jul 2014 00:43:43 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.201 X-Spam-Level: X-Spam-Status: No, score=-4.201 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id n77wnU3Saj6y; Fri, 18 Jul 2014 00:43:40 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 5857A1A0328; Fri, 18 Jul 2014 00:43:39 -0700 (PDT) Received: from 172.18.7.190 (EHLO lhreml401-hub.china.huawei.com) ([172.18.7.190]) by lhrrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id BHH94291; Fri, 18 Jul 2014 07:43:37 +0000 (GMT) Received: from NKGEML402-HUB.china.huawei.com (10.98.56.33) by lhreml401-hub.china.huawei.com (10.201.5.240) with Microsoft SMTP Server (TLS) id 14.3.158.1; Fri, 18 Jul 2014 08:43:09 +0100 Received: from NKGEML512-MBS.china.huawei.com ([169.254.8.48]) by nkgeml402-hub.china.huawei.com ([10.98.56.33]) with mapi id 14.03.0158.001; Fri, 18 Jul 2014 15:43:06 +0800 From: Xuxiaohu To: Robert Raszuk , "sfc@ietf.org" Thread-Topic: [spring] How to carry metadata/context in an MPLS packet Thread-Index: Ac+iK9IiUw61Lt1oTZi1TxTMkTltP///1YkA//95gUA= Date: Fri, 18 Jul 2014 07:43:06 +0000 Message-ID: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE082941FE@NKGEML512-MBS.china.huawei.com> References: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08294118@NKGEML512-MBS.china.huawei.com> In-Reply-To: Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.111.98.134] Content-Type: multipart/alternative; boundary="_000_1FEE3F8F5CCDE64C9A8E8F4AD27C19EE082941FENKGEML512MBSchi_" MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/7nibjV7tVDUkSe6eTIasL625NOk Cc: "mpls@ietf.org" , "" Subject: Re: [mpls] [spring] How to carry metadata/context in an MPLS packet X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Jul 2014 07:43:43 -0000 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([169.254.1.165]) by xhc-rcd-x13.cisco.com ([173.37.183.87]) with mapi id 14.03.0123.003; Fri, 18 Jul 2014 05:26:46 -0500 From: "Jim Guichard (jguichar)" To: "l.wood@surrey.ac.uk" , "xuxiaohu@huawei.com" , "mpls@ietf.org" Thread-Topic: [sfc] How to carry metadata/context in an MPLS packet Thread-Index: AQHPonLGRVDkgTbu6E6nM2i0L/u3EQ== Date: Fri, 18 Jul 2014 10:26:46 +0000 Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.3.9.131030 x-originating-ip: [10.98.43.180] Content-Type: text/plain; charset="us-ascii" Content-ID: <79D924AD1CCAF24D944C4B91646872F8@emea.cisco.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/-33OmanK_aX080DgHIdtrsuwaTI Cc: "spring@ietf.org" , "sfc@ietf.org" Subject: Re: [mpls] [sfc] How to carry metadata/context in an MPLS packet X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Jul 2014 10:26:49 -0000 Hi Lloyd, I believe that Xiaohu means that we need a way to *indicate* that metadata follows the bottom of the MPLS label stack. There are multiple ways to do that and as Robert quite rightly pointed out some mechanisms already exist such as reserved labels, special-purpose labels, context labels, my old draft (which FYI has expired) etc. On 7/17/14, 11:22 PM, "l.wood@surrey.ac.uk" wrote: >No, my "why" is "why have metadata in the MPLS header at all"? > >Why does this have to be done inband? > >I am questioning the basis for doing this. There is no "must" here. > >Lloyd Wood >http://about.me/lloydwood >________________________________________ >From: Xuxiaohu >Sent: Friday, 18 July 2014 1:17 PM >To: Wood L Dr (Electronic Eng); mpls@ietf.org >Cc: spring@ietf.org; sfc@ietf.org >Subject: RE: How to carry metadata/context in an MPLS packet > >The presence of metadata within an MPLS packet must be indicated in the >encapsulation. I think that's the "why" you may want to know. > >Best regards, >Xiaohu > >> -----Original Message----- >> From: l.wood@surrey.ac.uk [mailto:l.wood@surrey.ac.uk] >> Sent: Friday, July 18, 2014 11:11 AM >> To: Xuxiaohu; mpls@ietf.org >> Cc: spring@ietf.org; sfc@ietf.org >> Subject: RE: How to carry metadata/context in an MPLS packet >> >> How? A better question is "why?" >> >> What has to be done in MPLS that cannot be done outside it? >> >> Lloyd Wood >> http://about.me/lloydwood >> ________________________________________ >> From: mpls on behalf of Xuxiaohu >> >> Sent: Friday, 18 July 2014 11:58 AM >> To: mpls@ietf.org >> Cc: ; sfc@ietf.org >> Subject: [mpls] How to carry metadata/context in an MPLS packet >> >> Hi all, >> >> I'm now considering how to carry metadata/context in an MPLS packet. I >>just >> noticed that draft-guichard-mpls-metadata-00 >> (http://tools.ietf.org/html/draft-guichard-mpls-metadata-00#page-6) >>proposes >> a way to carry metadata/context in an MPLS packet (see below): >> >> "3. Metadata Channel Header Format >> >> The presence of metadata within an MPLS packet must be indicated in >> the encapsulation. This document defines that the G-ACh Generic >> Associated Channel Label (GAL) [RFC5586] with label value 13 is >> utilized for this purpose. The GAL label provides a method to >> identify that a packet contains an "Associated Channel Header (ACH)" >> followed by a non-service payload. >> >> [RFC5586] identifies the G-ACh Generic Associated Channel by setting >> the first nibble of the ACH that immediately follows the bottom label >> in the stack if the GAL label is present, to 0001b. Further >> [RFC5586] expects that the ACH not be used to carry user data >> traffic. This document proposes an extension to allow the first >> nibble of the ACH to be set to 0000b and, when following the GAL, be >> interpreted using the semantics defined in >> [I-D.guichard-metadata-header] to allow metadata to be carried >> through the G-ACh channel." >> >> However, it seems that the special usage of the GAL as mentioned above >>still >> conflicts with the following statement quoted from [RFC5586]: >> >> " The GAL MUST NOT appear in the label stack when transporting normal >> user-plane packets. Furthermore, when present, the GAL MUST NOT >> appear more than once in the label stack." >> >> I wonder whether the special usage of the GAL as proposed in the above >>draft >> would result in any backward compatibility issue. In addition, I wonder >>whether >> it's worthwhile to reconsider the possibility of introducing a Protocol >>Type (PT) >> field immediately after the bottom of the MPLS label stack. With such >>PT field, >> any kind of future MPLS payload (e.g., metadata header or NSH) can be >>easily >> identified. >> >> Best regards, >> Xiaohu >> >> _______________________________________________ >> mpls mailing list >> mpls@ietf.org >> https://www.ietf.org/mailman/listinfo/mpls > >_______________________________________________ >sfc mailing list >sfc@ietf.org >https://www.ietf.org/mailman/listinfo/sfc From nobody Fri Jul 18 03:43:45 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 172441A032F for ; Fri, 18 Jul 2014 03:43:43 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ATWiZPcsKqoO for ; Fri, 18 Jul 2014 03:43:41 -0700 (PDT) Received: from aer-iport-2.cisco.com (aer-iport-2.cisco.com [173.38.203.52]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2F6761A02AC for ; Fri, 18 Jul 2014 03:43:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3462; q=dns/txt; s=iport; t=1405680221; x=1406889821; h=message-id:date:from:reply-to:mime-version:to:cc:subject: references:in-reply-to:content-transfer-encoding; bh=gwU+5GdZiS5P1G6yEX1oVgfbW+5Isbzt4KFpajcltLk=; b=dlGWO+wRfIhso8Q91AnFWt99t83/g0ZffnHvxuLRcOENwObCbrXE/aKb JKqHQc/WiuFQ7UKYYrinZ3sH7DNdKoCDKgHXyGNuvyHyajTzoPi1yfxcT qCGyBUkkt1qRt77OBJS3T5Tv/qJsmoakQjqrmdozL7p+Og9HFRayue56Y I=; X-IronPort-AV: E=Sophos;i="5.01,684,1400025600"; d="scan'208";a="115862102" Received: from aer-iport-nat.cisco.com (HELO aer-core-3.cisco.com) ([173.38.203.22]) by aer-iport-2.cisco.com with ESMTP; 18 Jul 2014 10:43:37 +0000 Received: from cisco.com (mrwint.cisco.com [64.103.70.36]) by aer-core-3.cisco.com (8.14.5/8.14.5) with ESMTP id s6IAhamK001256 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 18 Jul 2014 10:43:36 GMT Received: from [IPv6:::1] (localhost [127.0.0.1]) by cisco.com (8.14.4+Sun/8.8.8) with ESMTP id s6IAhY4f012423; Fri, 18 Jul 2014 11:43:34 +0100 (BST) Message-ID: <53C8FA57.6080802@cisco.com> Date: Fri, 18 Jul 2014 11:43:35 +0100 From: Stewart Bryant User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "Nobo Akiya (nobo)" , Loa Andersson , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , Adrian Farrel References: <53BAA7BA.2060903@pi.nu> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/HPRlOh6TKU0fFCAjccQqDXrb_Jc Cc: "draft-bryant-mpls-oam-udp-return@tools.ietf.org" Subject: Re: [mpls] Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: stbryant@cisco.com List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Jul 2014 10:43:43 -0000 On 18/07/2014 01:50, Nobo Akiya (nobo) wrote: > Hi Loa, > > I have read the document and on-list discussions around this document. > > I believe this document solves a necessary problem, and I believe the desire to define a solution based on the LMAP framework should not block the progress of this document (i.e. the two should be pursued independently). > > Therefore, I support the adoption of this document as a WG document. > > Below lists few comments which I would like to see addressed, but not blockers before becoming a WG document. > > [snip from Section 4] > If the URO is expected but is not present in Query message and an > MPLS-PLDM Response is requested out-of-band, the Query message MUST > NOT be processed further. If received over a bidirectional LSP, the > control code of the Response message MUST be set to "Error - Missing > TLV" and a Response SHOULD be sent over the reverse LSP. > > [snip from Section 4.3] > If an Out-of-band response is requested and the Address object or the > URO is missing, the Query SHOULD be dropped in the case of a > unidirectional LSP. If both these TLVs are missing on a > bidirectional LSP, the control code of Response message should set to > "Invalid Message" and the response SHOULD be sent over the reverse > LSP. > > Both snippets are describing the same procedure but there's a conflict with control code value mandated. > => "Missing TLV" (TBD) vs. "Invalid Message" (0x1C) Good catch. Since we have combined port and address, invalid Msg is probably good enough. > In the second snippet from Section 4.3 above, I believe the condition should be && and not ||. I don't think so. Address only was the original mode and although I have doubts about whether there are deployments we need to support it until it is deprecated. Thus you might find an address TLV indicating a response over IP is required or a URO indicating a response over UDP/IP is required. I think we agreed that we needed to support multiple UROs in certain circumstances however I am wondering whether we need to support both modes (IP and URO) or the same packet. > s/and the Address object or the URO is missing/and the Address object and the URO are missing/ Please see above. Since we combined address and port in the URO only one TLV needs to be present > [snip from Section 5] > Nothing in this document precludes the use of a configured UDP/IP > return path in a deployment in which configuration is preferred to > signalling. In these circumstances the URO MAY be omitted from the > MPLS-PLDM messages. > > I'd like to propose a slightly different text, because such configuration may be to setup a default target for the response, in which case URO will be more preferred. > > [suggested text] > Nothing in this document precludes the use of a configured UDP/IP > return path that is more preferred than the target specified in > received UROs. In these circumstances, the UROs in received MPLS-PM > Query MAY be ignored. Alternatively use of a configured UDP/IP > return path as a default target may be specified (i.e. less preferred > than UROs). In these circumstances, the absence of the UROs in > received MPLS-PM Query SHOULD NOT be treated as an error. That works for me. I will fix the nits as needs Thanks for the review Stewart From nobody Fri Jul 18 06:03:40 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id BE2BE1A0AEB for ; Fri, 18 Jul 2014 06:03:34 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -114.502 X-Spam-Level: X-Spam-Status: No, score=-114.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id wMqiUjBaqglS for ; Fri, 18 Jul 2014 06:03:19 -0700 (PDT) Received: from rcdn-iport-1.cisco.com (rcdn-iport-1.cisco.com [173.37.86.72]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 18C7E1A0AD9 for ; Fri, 18 Jul 2014 06:03:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2197; q=dns/txt; s=iport; t=1405688599; x=1406898199; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=nBlnEqXqClEELD0wwI3u8Sh0xuov3t0VnY3fP2aMP6s=; b=ZVtjIK2zeeOWuZJFfjsEEGKKXkSgXLiiYwojG0nou9MIn83PGrr9AFG+ MRjkStm42FKoTpjKhZ4pPuupcbFG6dcgyLNPbHNVKERJ7/8XDItpS1yZW M+qooT1EITm160ZuojeIVB2VP42HgXQeCElRc1oeiSkdt86GW4n2bsMLg I=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AhAFAF0ayVOtJV2a/2dsb2JhbABZgmokgS3LEoEhAYEIFnaEBAEBBDo/EAIBCCIUBQsyJQIEAQ0NiDoBxDAXjxoxB4MugRgFjkOhEYICgUKCMQ X-IronPort-AV: E=Sophos;i="5.01,685,1400025600"; d="scan'208";a="340835179" Received: from rcdn-core-3.cisco.com ([173.37.93.154]) by rcdn-iport-1.cisco.com with ESMTP; 18 Jul 2014 13:03:18 +0000 Received: from xhc-rcd-x06.cisco.com (xhc-rcd-x06.cisco.com [173.37.183.80]) by rcdn-core-3.cisco.com (8.14.5/8.14.5) with ESMTP id s6ID3IQ9006793 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Fri, 18 Jul 2014 13:03:18 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-rcd-x06.cisco.com ([173.37.183.80]) with mapi id 14.03.0123.003; Fri, 18 Jul 2014 08:03:18 -0500 From: "Nobo Akiya (nobo)" To: "Stewart Bryant (stbryant)" , Loa Andersson , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , Adrian Farrel Thread-Topic: [mpls] Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document Thread-Index: AQHPmeuyvEqL5d1/1ESW4A59wRYjn5ukwbEwgAFIiYD//87NQA== Date: Fri, 18 Jul 2014 13:03:17 +0000 Message-ID: References: <53BAA7BA.2060903@pi.nu> <53C8FA57.6080802@cisco.com> In-Reply-To: <53C8FA57.6080802@cisco.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [161.44.212.73] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/jxLmS2iRTPzTu0-ysyO2i-3FT-4 Cc: "draft-bryant-mpls-oam-udp-return@tools.ietf.org" Subject: Re: [mpls] Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Jul 2014 13:03:37 -0000 Hi Stewart, Clipping out ones with closure. Please see below. [...] > > [snip from Section 4] > > If the URO is expected but is not present in Query message and an > > MPLS-PLDM Response is requested out-of-band, the Query message > MUST > > NOT be processed further. If received over a bidirectional LSP, th= e > > control code of the Response message MUST be set to "Error - Missin= g > > TLV" and a Response SHOULD be sent over the reverse LSP. > > > > [snip from Section 4.3] > > If an Out-of-band response is requested and the Address object or t= he > > URO is missing, the Query SHOULD be dropped in the case of a > > unidirectional LSP. If both these TLVs are missing on a > > bidirectional LSP, the control code of Response message should set = to > > "Invalid Message" and the response SHOULD be sent over the reverse > > LSP. [...] > > In the second snippet from Section 4.3 above, I believe the condition > should be && and not ||. > I don't think so. >=20 > Address only was the original mode and although I have doubts about > whether there are deployments we need to support it until it is deprecate= d. > Thus you might find an address TLV indicating a response over IP is requi= red > or a URO indicating a response over UDP/IP is required. >=20 > I think we agreed that we needed to support multiple UROs in certain > circumstances however I am wondering whether we need to support both > modes (IP and URO) or the same packet. [...] I see. I got the impression from the document that having both is not disal= lowed, thus it's an error if neither are included in the Query (i.e. &&). B= ut you are right, there's no point in keeping around (IP) since (URO) is a = superset. Technically I do not see any issue if this document deprecated (I= P). Responder implementations will likely need to support both for a while,= thus perhaps having a text around the transition period (i.e. what happens= when both (IP) and (URO) are in the Query) somewhere in the document (ex: = Appendix?) may be beneficial. Either way, texts in both snippets should be updated. Thanks! -Nobo From nobody Fri Jul 18 07:43:38 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id DB8811B29E0; Fri, 18 Jul 2014 07:43:33 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.277 X-Spam-Level: X-Spam-Status: No, score=-1.277 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FM_FORGED_GMAIL=0.622, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id I7JyERbXbMa3; Fri, 18 Jul 2014 07:43:31 -0700 (PDT) Received: from mail-ie0-x22c.google.com (mail-ie0-x22c.google.com [IPv6:2607:f8b0:4001:c03::22c]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 10D291B29CE; Fri, 18 Jul 2014 07:43:30 -0700 (PDT) Received: by mail-ie0-f172.google.com with SMTP id lx4so4580563iec.17 for ; Fri, 18 Jul 2014 07:43:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=UIrzvOQ2YUHjM0nbyOoriIY/J2pVyExkHxhyGNm2Mac=; b=rRoUMIS2vhZhjdbRik8myrWAYQR8q3Ox+Ob50Xh0INwZSlBH+vEd3SPOdXhe9Kabsn RK6XWpI4wLUTAMew0Ye//Y89dn5uFeXDCDEqmWTEbUit4J5el1EvMZdqg6GPNDeZXWML 8xER4qh23wY5edp4tsZJ76aNC2ybtYXkx1FVUrtDksA9mj0kGmjVHdK7ZnnXXHcmw7+t 1JV33p1qb6wxun4cTdrHGTYQiLtiVXDC3KUO3cYOkXBw9wKZolFh7SgOUA1KS0IZp1HY Qxv0zbTovaWU3WLTlfRH4KcqQuTf4oMJjazyPiD+MTX/3AlKkuEBvS/0W1mZaxhDb8Lm z9NA== MIME-Version: 1.0 X-Received: by 10.42.154.132 with SMTP id q4mr8214426icw.4.1405694610197; Fri, 18 Jul 2014 07:43:30 -0700 (PDT) Sender: rraszuk@gmail.com Received: by 10.64.89.38 with HTTP; Fri, 18 Jul 2014 07:43:30 -0700 (PDT) In-Reply-To: References: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08294118@NKGEML512-MBS.china.huawei.com> Date: Fri, 18 Jul 2014 16:43:30 +0200 X-Google-Sender-Auth: nd42Y6V-GFoxs1lLKAjCXHLW2kI Message-ID: From: Robert Raszuk To: Ron Parker Content-Type: multipart/alternative; boundary=90e6ba6e87a6e7528504fe78c708 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/0M3izpBLu--zV1FU23YbS0x63sE Cc: "mpls@ietf.org" , "" , "sfc@ietf.org" Subject: Re: [mpls] [sfc] [spring] How to carry metadata/context in an MPLS packet X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Jul 2014 14:43:34 -0000 --90e6ba6e87a6e7528504fe78c708 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Ron, I would be very very carefull to place matadata inband (ie embed it in customer data packets) of data plane. Few reasons for consideration: - Adding anything over hundred bytes may become pretty overwhelming for small size customer packets - Adding anything over already maxed size packet may cause MTU issues and fragmentation (which in many cases is not possible in the middle of the network). Keep in mind also encrypted data. - Anything which is variable length in the data plane and which is opaque to the data plane causes additional data plane requirements which a lot of hardware may have a hard time to deal with - Inband transport provides no option to pre-populate the state at the backup devices / backup paths where no active traffic is traversing before any network event affecting primary path - A lot of appliances may not be able to be transparent to opaque variable length metadata resulting in metadata information loss. For all of the above reasons (and I am sure many more not listed above) I would keep customer data packets alone and when needed limit only insertion of a pointer to metadata context learned out-of-band. (Out-of-band is a bit misleading term here as metadata can happily travel via the same set of links as customer data. What it really means is out-of-customer-data-packets). Best regards, R. On Fri, Jul 18, 2014 at 2:05 PM, Ron Parker wrote: > Robert, > > > > Inband is one way -- it simplifies things at the cost of packet growth. > Out-of-band (i.e., signaling) is another way =E2=80=93 it adds complexity= but > doesn=E2=80=99t grow the data plane packets. Congruent out-of-band is a= variation > on out-of-band that may partially reduce out-of-band complexity. I thi= nk > many opinions on the thread have been that all are in scope, > architecturally. Draft-zhang-sfc-sch (I am a co-author), for example, > defines inband metadata explicitly, but states in text that out-of-band i= s > possible, too. I=E2=80=99m sure this will be a topic of discussion whe= n we start > discussing control plane requirements. > > > > Ron > > > > *From:* sfc [mailto:sfc-bounces@ietf.org] *On Behalf Of *Robert Raszuk > > *Sent:* Friday, July 18, 2014 3:27 AM > *To:* Xuxiaohu; sfc@ietf.org > *Cc:* mpls@ietf.org; > *Subject:* Re: [sfc] [spring] How to carry metadata/context in an MPLS > packet > > > > All, > > > > Is the idea of using data plane to carry complete metadata is "the way" o= r > "a way" of approaching the problem ? Has this been already discussed ? > > > > I would rather consider to carry metadata in control plane and only attac= h > a reference_id (and only when it is needed) to the data plane. > > > > Rgs, > > R. > > > > > > > > > > On Fri, Jul 18, 2014 at 3:58 AM, Xuxiaohu wrote: > > Hi all, > > I'm now considering how to carry metadata/context in an MPLS packet. I > just noticed that draft-guichard-mpls-metadata-00 ( > http://tools.ietf.org/html/draft-guichard-mpls-metadata-00#page-6) > proposes a way to carry metadata/context in an MPLS packet (see below): > > "3. Metadata Channel Header Format > > The presence of metadata within an MPLS packet must be indicated in > the encapsulation. This document defines that the G-ACh Generic > Associated Channel Label (GAL) [RFC5586] with label value 13 is > utilized for this purpose. The GAL label provides a method to > identify that a packet contains an "Associated Channel Header (ACH)" > followed by a non-service payload. > > [RFC5586] identifies the G-ACh Generic Associated Channel by setting > the first nibble of the ACH that immediately follows the bottom label > in the stack if the GAL label is present, to 0001b. Further > [RFC5586] expects that the ACH not be used to carry user data > traffic. This document proposes an extension to allow the first > nibble of the ACH to be set to 0000b and, when following the GAL, be > interpreted using the semantics defined in > [I-D.guichard-metadata-header] to allow metadata to be carried > through the G-ACh channel." > > However, it seems that the special usage of the GAL as mentioned above > still conflicts with the following statement quoted from [RFC5586]: > > " The GAL MUST NOT appear in the label stack when transporting normal > user-plane packets. Furthermore, when present, the GAL MUST NOT > appear more than once in the label stack." > > I wonder whether the special usage of the GAL as proposed in the above > draft would result in any backward compatibility issue. In addition, I > wonder whether it's worthwhile to reconsider the possibility of introduci= ng > a Protocol Type (PT) field immediately after the bottom of the MPLS label > stack. With such PT field, any kind of future MPLS payload (e.g., metadat= a > header or NSH) can be easily identified. > > Best regards, > Xiaohu > > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring > > > --90e6ba6e87a6e7528504fe78c708 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable --90e6ba6e87a6e7528504fe78c708-- From nobody Sat Jul 19 05:33:19 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8827F1B27F6 for ; Sat, 19 Jul 2014 05:33:16 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id icDIu_qn6FQZ for ; Sat, 19 Jul 2014 05:33:14 -0700 (PDT) Received: from mail-qa0-x234.google.com (mail-qa0-x234.google.com [IPv6:2607:f8b0:400d:c00::234]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 569A71B27E7 for ; Sat, 19 Jul 2014 05:33:14 -0700 (PDT) Received: by mail-qa0-f52.google.com with SMTP id j15so3784733qaq.39 for ; Sat, 19 Jul 2014 05:33:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type; bh=DEnUM4L2FLF3o4e9QLe1+qu8fNoRvB1HFI9bvMeCdJU=; b=nuj+410z8X6JjY92etmeIJbwPirtpyFpte2vsRivCUha5HgRU3KcvISWYdeSGKWxvl 2PZkOR24/bwbN+Yrc8mm3z7vYyHjvr6uC4sYb/00m5aKpRgzEzVWr323pBjBGAvVDzG9 /v2dzXYR7NFuy6kIXbvl8WEHcn4++c/ViOOKrXbNMyZ+LWkjxRHm182w7ye6ncOGXeCB uQ++jrayVOLNGYuT1JpV8WLAufFIIOGXtlfzYdwmtLuQZJzbw0vV4WQjap78EDGQ9ZNC Z4co7f2urmTH7tZ7oGbHR4aVEET8S6yLf3x3OOTV8LKbdE6tgCwf+y1adVXTSC6RjFak 1jBg== X-Received: by 10.140.88.103 with SMTP id s94mr17253490qgd.73.1405773193472; Sat, 19 Jul 2014 05:33:13 -0700 (PDT) MIME-Version: 1.0 Received: by 10.140.16.22 with HTTP; Sat, 19 Jul 2014 05:32:53 -0700 (PDT) In-Reply-To: <370B9DEB-3135-4360-B0DF-E795DD70D12D@gmail.com> References: <53C13FDF.1000604@pi.nu> <370B9DEB-3135-4360-B0DF-E795DD70D12D@gmail.com> From: "Andrew G. Malis" Date: Sat, 19 Jul 2014 08:32:53 -0400 Message-ID: To: Sam Aldrin Content-Type: multipart/alternative; boundary=001a11c11e1cd4f0c104fe8b1360 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/ImDmjl-CduROXVLHxPpr8drf83w Cc: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "draft-akiya-mpls-entropy-lsp-ping@tools.ietf.org" Subject: Re: [mpls] IPR poll on draft-akiya-mpls-entropy-lsp-ping X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 19 Jul 2014 12:33:16 -0000 --001a11c11e1cd4f0c104fe8b1360 Content-Type: text/plain; charset=UTF-8 Loa, Sorry for the delay. I am not aware of any IPR beyond that already disclosed. Cheers, Andy On Sat, Jul 12, 2014 at 5:56 PM, Sam Aldrin wrote: > None that I am aware off. > > Sam > > Sent from my iPad > > > On Jul 12, 2014, at 7:02 AM, Loa Andersson wrote: > > > > Working Group, > > > > The authors of draft-akiya-mpls-entropy-lsp-ping has told the wg chairs > > that the draft is ready to be polled to see uf we have support to make > > it a working group document. > > > > While addressing the last procedures details we will start the the IPR > > poll.This mail starts that IPR poll. > > > > Are you aware of any IPR that applies to draft-akiya-mpls-entropy- > > lsp-ping? > > > > If so, has this IPR been disclosed in compliance with IETF IPR rules > > (see RFCs 3979, 4879, 3669 and 5378 for more details). > > > > Currently there are two IPR disclosures that relates to this document. > > > > If you are listed as a document author or contributor please respond to > > this email regardless of whether or not you are aware of any relevant > > IPR. *The response needs to be sent to the MPLS wg mailing list.* The > document will not advance to the next stage until a response has been > > received from each author and contributor. > > > > If you are on the MPLS WG email list but are not listed as an author or > > contributor, then please explicitly respond only if you are aware of any > > IPR that has not yet been disclosed in conformance with IETF rules. > > > > Thanks, Loa > > (as MPLS WG co-chair) > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > --001a11c11e1cd4f0c104fe8b1360 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Loa,

Sorry for the delay. I am not awar= e of any IPR beyond that already disclosed.

Cheers= ,
Andy


On Sat, Jul 12, 2014 at 5:56 PM, Sam Aldrin <aldrin.ietf@gmail.com> wrote:
None that I am aware off.

Sam

Sent from my iPad

> On Jul 12, 2014, at 7:02 AM, Loa Andersson <loa@pi.nu> wrote:
>
> Working Group,
>
> The authors of draft-akiya-mpls-entropy-lsp-ping has told the wg chair= s
> that the draft is ready to be polled to see uf we have support to make=
> it a working group document.
>
> While addressing the last procedures details we will start the the IPR=
> poll.This mail starts that IPR poll.
>
> Are you aware of any IPR that applies to draft-akiya-mpls-entropy-
> lsp-ping?
>
> If so, has this IPR been disclosed in compliance with IETF IPR rules > (see RFCs 3979, 4879, 3669 and 5378 for more details).
>
> Currently there are two IPR disclosures that relates to this document.=
>
> If you are listed as a document author or contributor please respond t= o
> this email regardless of whether or not you are aware of any relevant<= br> > IPR. *The response needs to be sent to the MPLS wg mailing list.* The = document will not advance to the next stage until a response has been
> received from each author and contributor.
>
> If you are on the MPLS WG email list but are not listed as an author o= r
> contributor, then please explicitly respond only if you are aware of a= ny
> IPR that has not yet been disclosed in conformance with IETF rules. >
> Thanks, Loa
> (as MPLS WG co-chair)

_______________________= ________________________
mpls mailing list
mpls@ietf.org
ht= tps://www.ietf.org/mailman/listinfo/mpls

--001a11c11e1cd4f0c104fe8b1360-- From nobody Mon Jul 21 04:03:41 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E6ED11B2D80 for ; Mon, 21 Jul 2014 04:03:38 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -6.9 X-Spam-Level: X-Spam-Status: No, score=-6.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hF7enCSNWytD for ; Mon, 21 Jul 2014 04:03:34 -0700 (PDT) Received: from ihemail1.lucent.com (ihemail1.lucent.com [135.245.0.33]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 5D3CE1B2D4C for ; Mon, 21 Jul 2014 04:03:34 -0700 (PDT) Received: from us70tusmtp2.zam.alcatel-lucent.com (h135-5-2-64.lucent.com [135.5.2.64]) by ihemail1.lucent.com (8.13.8/IER-o) with ESMTP id s6LB3WAa026299 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Mon, 21 Jul 2014 06:03:32 -0500 (CDT) Received: from US70UWXCHHUB02.zam.alcatel-lucent.com (us70uwxchhub02.zam.alcatel-lucent.com [135.5.2.49]) by us70tusmtp2.zam.alcatel-lucent.com (GMO) with ESMTP id s6LB3V2L023778 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL) for ; Mon, 21 Jul 2014 07:03:32 -0400 Received: from [135.244.3.17] (135.5.27.18) by US70UWXCHHUB02.zam.alcatel-lucent.com (135.5.2.49) with Microsoft SMTP Server (TLS) id 14.2.247.3; Mon, 21 Jul 2014 07:03:31 -0400 Message-ID: <53CCF381.5090707@alcatel-lucent.com> Date: Mon, 21 Jul 2014 13:03:29 +0200 From: Martin Vigoureux User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: References: <53C51B75.9000008@alcatel-lucent.com> In-Reply-To: <53C51B75.9000008@alcatel-lucent.com> Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 8bit X-Originating-IP: [135.5.27.18] Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/ZzG-hhYVw6kDnxLT7bA_nQJXaO8 Subject: [mpls] Urgent [Re: IETF90 - MPLS - Agenda available - Please send your presentation material] X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Jul 2014 11:03:39 -0000 Hello, I have only received 8 sets of slides out of the 19 expected. Deadline was yesterday 23h59 ... Please send by them noon today, otherwise I will not upload them. -m Le 15/07/2014 14:15, Martin Vigoureux a écrit : > All, > > the agenda is on-line: > http://www.ietf.org/proceedings/90/agenda/agenda-90-mpls > > Please have a look at it. > > Speakers, please start sending me your presentation material, and please > do so before July the 21st (Monday), local time. > > Thank you > > Martin > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > > From nobody Mon Jul 21 05:51:25 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1BEFF1B2BD1 for ; Mon, 21 Jul 2014 05:51:24 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 1.877 X-Spam-Level: * X-Spam-Status: No, score=1.877 tagged_above=-999 required=5 tests=[BAYES_40=-0.001, HELO_EQ_IT=0.635, HOST_EQ_IT=1.245, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id rKxo7IXfoPcH for ; Mon, 21 Jul 2014 05:51:22 -0700 (PDT) Received: from teledg001ba020.telecomitalia.it (teledg001ba020.telecomitalia.it [156.54.233.210]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 719E71B2BC9 for ; Mon, 21 Jul 2014 05:51:21 -0700 (PDT) Received: from TELCAH001BA020.telecomitalia.local (10.188.101.214) by teledg001ba020.telecomitalia.it (10.188.101.210) with Microsoft SMTP Server (TLS) id 14.3.181.6; Mon, 21 Jul 2014 14:51:11 +0200 Received: from TELMBB001BA020.telecomitalia.local ([169.254.2.208]) by TELCAH001BA020.telecomitalia.local ([10.188.101.214]) with mapi id 14.03.0181.006; Mon, 21 Jul 2014 14:51:12 +0200 From: Capello Alessandro To: Loa Andersson , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , Adrian Farrel Thread-Topic: [mpls] Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document Thread-Index: AQHPmeu0n6CH63ahB0qBH3drHaV9L5uqj3HA Date: Mon, 21 Jul 2014 12:51:11 +0000 Message-ID: References: <53BAA7BA.2060903@pi.nu> In-Reply-To: <53BAA7BA.2060903@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.188.101.186] x-ti-disclaimer: Disclaimer1 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/kB9lmiH1tiv9HZRRkCw33SvUBEw Cc: "draft-bryant-mpls-oam-udp-return@tools.ietf.org" Subject: Re: [mpls] Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Jul 2014 12:51:24 -0000 Hi, I support the adoption of this draft as a WG document. Regards, Alessandro -----Original Message----- From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Loa Andersson Sent: luned=EC 7 luglio 2014 15.59 To: mpls@ietf.org; mpls-chairs@tools.ietf.org; Adrian Farrel Cc: draft-bryant-mpls-oam-udp-return@tools.ietf.org Subject: [mpls] Poll to see if we have support to make draft-bryant-mpls-oa= m-udp-return an mpls working group document Working Group, The authors of draft-bryant-mpls-oam-udp-return has informed us that the draft is ready to be polled to see if we have consensus to make it a working group document. This mail starts a two week adoption poll. We have not yet done the IPR poll, it will be done in parallel to the adoption poll. There are no IPR disclosed against this draft. Please send your comments to the mpls working group mailing list (mpls@ietf.org) This adoption poll ends Juli 21, 2014! /Loa for the mpls wg co-chairs -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 _______________________________________________ mpls mailing list mpls@ietf.org https://www.ietf.org/mailman/listinfo/mpls Questo messaggio e i suoi allegati sono indirizzati esclusivamente alle per= sone indicate. La diffusione, copia o qualsiasi altra azione derivante dall= a conoscenza di queste informazioni sono rigorosamente vietate. Qualora abb= iate ricevuto questo documento per errore siete cortesemente pregati di dar= ne immediata comunicazione al mittente e di provvedere alla sua distruzione= , Grazie. This e-mail and any attachments is confidential and may contain privileged = information intended for the addressee(s) only. Dissemination, copying, pri= nting or use by anybody else is unauthorised. If you are not the intended r= ecipient, please delete this message and any attachments and advise the sen= der by return e-mail, Thanks. From nobody Mon Jul 21 07:47:06 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D11891A008D; Mon, 21 Jul 2014 07:47:00 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Ypfr1vgsgfyq; Mon, 21 Jul 2014 07:46:51 -0700 (PDT) Received: from cappuccino.rob.sh (cappuccino.rob.sh [IPv6:2a03:9800:10:4c::cafe:b00c]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 6574D1A002E; Mon, 21 Jul 2014 07:46:49 -0700 (PDT) Received: from [2001:67c:370:176:c975:8fee:4dcf:475] (helo=wireless-a-v6.meeting.ietf.org) by cappuccino.rob.sh with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1X9ErX-0005MG-Oc; Mon, 21 Jul 2014 15:46:47 +0100 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Content-Type: text/plain; charset=windows-1252 From: Rob Shakir In-Reply-To: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> Date: Mon, 21 Jul 2014 10:46:45 -0400 Content-Transfer-Encoding: quoted-printable Message-Id: <8D8AAE60-11B2-489A-877A-D315B8050D95@rob.sh> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> To: spring@ietf.org, mpls@ietf.org X-Mailer: Apple Mail (2.1878.6) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/RwCEr1YCI0ULLr7VhUhd-HdyXVg Cc: draft-kini-mpls-spring-entropy-label@tools.ietf.org Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Jul 2014 14:47:01 -0000 Adding the MPLS wg to this discussion. [Apologies for the spam.] r. On 21 Jul 2014, at 10:38, Rob Shakir wrote: > Hi SPRING, draft-kini=85 authors, >=20 > I have a few comments on the discussion within this draft =97 and a = quick question > on the intention around the document. >=20 > - I feel that it would be useful to provide some clarification as to = where we > expect entropy to be required for load-sharing in the draft. The = current > wording (to me) could be read to say that where Adj-SID is used, then = there > is no requirement to consider placement for EL since there will be no > load-balancing. However, since Adj-SID can apply to a bundle (3.5.1 = in > draft-filsfils-spring-segment-routing-04), or the underlying = transport for an > IGP adjacency can be multi-path (e.g., an aggregated Ethernet link) > this is not true unless a head-end PE can guarantee that a particular > adjacency is made up of a transport that has only 1 path (i.e., = explicitly > requires no load-balancing). I'm not sure how the iLER would actually = determine > this, short of the definition of new per-adjacency advertisement = capabilities. > Even if it were able to, then it seems the result is very likely to = be that an > approach that requires per-hop entropy labels to be injected is going = to > guarantee label stack depth >=3D 3*[number of path SIDs]. >=20 > I think that the above means that the current draft under-estimates = the depth > of the stack when considering an EL per tunnel (=A73.2), which might = amplify > some of the concerns raised for this option.=20 >=20 > - =A73.4 - I am not clear how we would really implement this option. = If we learn > midpoint capabilities, and then tune our placement of the EL based on = these, > then it seems like the only viable approach is really to consider = _all_ > midpoints, and tune the placement according to the "shallowest" = midpoint in > the network. This is because, whilst we might expect that there is = routing via > some particular path, this might change if there is ECMP between = mid-points > nodes where some paths have different capabilities than others, and = equally > might change whilst re-routing occurs. >=20 > In terms of discovery of the capabilities of a mid-point -- do we = need to > consider how, in a multi-area network, we discover the capabilities = of a > mid-point which might not have information about it leaked between = areas? >=20 > - Finally, it'd be good to determine what the intention of the authors = for this > document is. Do we expect that we make a recommendation as to what = equipment > vendors who are going to support SR-MPLS should optimise for? At the = moment, > the document is good at classifying the different approaches that = _could_ be=20 > taken, but potentially requires an operator/vendor to consider = optimisation > for both a) reading very deep into the stack when acting as an LSR, = b) pushing > very deep stacks when acting as iLER, c) potentially implementing = more complex > swap() operations, whereby some reshuffling of the EL is required.=20 >=20 > My feeling is that it would be very useful for this document to be = able to > make a clear recommendation as to which of these approaches should be > optimised for, and hence we should debate their technical efficacy. = It'd be > good to understand whether the authors are intending to do this, or = rather > classify the approaches. >=20 > Cheers, > r. >=20 >=20 > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring From nobody Mon Jul 21 07:51:02 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 0ACC81A00B9 for ; Mon, 21 Jul 2014 07:51:00 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 0.801 X-Spam-Level: X-Spam-Status: No, score=0.801 tagged_above=-999 required=5 tests=[BAYES_50=0.8, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id CNed-paHnvpg for ; Mon, 21 Jul 2014 07:50:57 -0700 (PDT) Received: from smtp02.msg.oleane.net (smtp02.msg.oleane.net [62.161.4.2]) by ietfa.amsl.com (Postfix) with ESMTP id F1A711A002E for ; Mon, 21 Jul 2014 07:50:56 -0700 (PDT) Received: from MGosseDellM6800 (AClermont-Ferrand-551-1-235-17.w86-207.abo.wanadoo.fr [86.207.182.17]) (authenticated) by smtp02.msg.oleane.net (MSA) with ESMTP id s6LEoJpS011687 for ; Mon, 21 Jul 2014 16:50:21 +0200 X-Oleane-Rep: REPA From: "Michel Gosse" To: Date: Mon, 21 Jul 2014 16:50:43 +0200 Message-ID: <00b101cfa4f3$28401410$78c03c30$@upperside.fr> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00B2_01CFA503.EBC8E410" X-Mailer: Microsoft Outlook 15.0 Thread-Index: Ac+k8xB7UhZ4iThrSb67e1koSnV5Dw== Content-Language: fr X-Backend: vm-smtp-sophos11v3 X-PMX-Spam: Probability=12% X-PFSI-Info: PMX 6.0.0.2142326, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2014.7.21.143921 (no antivirus check) X-Orange-Auth: bWcyNjMtM0B1cHBlc2lkZS5mci5mdG8= Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/RdPeFRShInLRpW09LFwyy6PaOt8 Subject: [mpls] MPLS SDN World, NFV & SDN Summit: CFP Deadline extended X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Jul 2014 14:51:00 -0000 This is a multipart message in MIME format. ------=_NextPart_000_00B2_01CFA503.EBC8E410 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit The MPLS SDN World Congress, together with the collocated NFV & SDN Summit, will take place in Paris next 17 to 20 March, 2015. The two events will share a common first day and will conclude with a panel discussion made up of key players (manufacturers and operators) from these technologies. The proposals submission deadline has been extended to August 15. MPLS SDN World agenda: Spring, SDN controller, resilience, SDN migration case studies http://www.uppersideconferences.com/mplssdnworld2015/mplssdn2015cfp.html NFV & SDN Summit agenda: orchestration, open source initiatives, service chaining, use cases http://www.uppersideconferences.com/nfvandsdnsummit2015/nfvandsdnsummit2015c fp.html ------=_NextPart_000_00B2_01CFA503.EBC8E410 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

The MPLS SDN World Congress, together with the collocated NFV & SDN Summit, = will take place in Paris next 17 to 20 March, 2015.

The two events will share a common first day and will = conclude with a panel discussion made up of key players (manufacturers = and operators) from these technologies.

The proposals = submission deadline has been extended to August 15.

MPLS SDN World agenda: Spring, SDN controller, = resilience, SDN migration case = studies

http://www.uppersideconferences.com/mplssdnworld2015/mplssdn2015= cfp.html

NFV & SDN Summit = agenda: orchestration= , open source initiatives, service chaining, use = cases

http://www.uppersideconferences.com/nfvandsdnsummit20= 15/nfvandsdnsummit2015cfp.html

 

 

------=_NextPart_000_00B2_01CFA503.EBC8E410-- From nobody Mon Jul 21 07:57:11 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 42C121A017D; Mon, 21 Jul 2014 07:57:08 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.202 X-Spam-Level: X-Spam-Status: No, score=-4.202 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id dENgbQzh19kq; Mon, 21 Jul 2014 07:57:05 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 1FA9C1A012D; Mon, 21 Jul 2014 07:57:03 -0700 (PDT) Received: from 172.18.7.190 (EHLO lhreml403-hub.china.huawei.com) ([172.18.7.190]) by lhrrg01-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id BKJ38704; Mon, 21 Jul 2014 14:57:02 +0000 (GMT) Received: from NKGEML401-HUB.china.huawei.com (10.98.56.32) by lhreml403-hub.china.huawei.com (10.201.5.217) with Microsoft SMTP Server (TLS) id 14.3.158.1; Mon, 21 Jul 2014 15:57:02 +0100 Received: from NKGEML512-MBS.china.huawei.com ([169.254.8.48]) by nkgeml401-hub.china.huawei.com ([10.98.56.32]) with mapi id 14.03.0158.001; Mon, 21 Jul 2014 22:56:55 +0800 From: Xuxiaohu To: Rob Shakir , "spring@ietf.org" , "mpls@ietf.org" Thread-Topic: [spring] SPRING MPLS and Entropy Label Thread-Index: AQHPpPG60J2/V/fu6kuL32lhjiOWm5uqFS+AgACHrg0= Date: Mon, 21 Jul 2014 14:56:54 +0000 Message-ID: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08295C29@NKGEML512-MBS.china.huawei.com> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh>, <8D8AAE60-11B2-489A-877A-D315B8050D95@rob.sh> In-Reply-To: <8D8AAE60-11B2-489A-877A-D315B8050D95@rob.sh> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.47.149.178] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/Ju2swT-DfaN9a409Q3p1Un1NZKo Cc: "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Jul 2014 14:57:08 -0000 Hi Rob, > In terms of discovery of the capabilities of a mid-point -- do we need t= o > consider how, in a multi-area network, we discover the capabilities of a > mid-point which might not have information about it leaked between areas= ? Did you mean that when propagating the capabilities TLV/sub-TLV of a given = node across areas, the information (e.g., IP address) of the originator of = that capability TLV/sub-TLV is lost? Best regards, Xiaohu= From nobody Mon Jul 21 08:03:12 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 342351A01C3; Mon, 21 Jul 2014 08:03:11 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id MoycJ7VagMBw; Mon, 21 Jul 2014 08:03:06 -0700 (PDT) Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 774421A0169; Mon, 21 Jul 2014 08:02:23 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: i-d-announce@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 5.6.1.p1 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <20140721150223.16376.58337.idtracker@ietfa.amsl.com> Date: Mon, 21 Jul 2014 08:02:23 -0700 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/xYeQKL9Lk1Tgwn9HTAzwrnNl1oI Cc: mpls@ietf.org Subject: [mpls] I-D Action: draft-tsaad-mpls-p2mp-loose-path-reopt-03.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Jul 2014 15:03:11 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF. Title : Reoptimization of Point-to-Multipoint Traffic Engineering Loosely Routed LSPs Authors : Tarek Saad Rakesh Gandhi Zafar Ali Robert H. Venator Yuji Kamite Filename : draft-tsaad-mpls-p2mp-loose-path-reopt-03.txt Pages : 11 Date : 2014-07-21 Abstract: For a Traffic Engineered (TE) point-to-multipoint (P2MP) Label Switched Path (LSP), it is preferable in some cases to re-evaluate and re-optimize the entire P2MP-TE LSP by re-signaling all its S2L sub-LSP(s). Existing mechanisms allow the path re-evaluation and the signaling of a the notification of preferred path exists for a single S2L sub-LSP only. This document defines RSVP-TE signaling extensions to allow an ingress Label Switching Router (LSR) of a P2MP-TE LSP to trigger the re-evaluation of the entire LSP tree containing one or more S2L sub- LSPs whose paths are loose (or abstract) hop expanded, and for a mid- point LSR to signal to the ingress LSR that a better tree exists for the entire P2MP-TE LSP. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-tsaad-mpls-p2mp-loose-path-reopt/ There's also a htmlized version available at: http://tools.ietf.org/html/draft-tsaad-mpls-p2mp-loose-path-reopt-03 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-tsaad-mpls-p2mp-loose-path-reopt-03 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Mon Jul 21 08:05:04 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5FC601A019A; Mon, 21 Jul 2014 08:05:02 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id sNctGYN3J0Ci; Mon, 21 Jul 2014 08:04:59 -0700 (PDT) Received: from cappuccino.rob.sh (cappuccino.rob.sh [IPv6:2a03:9800:10:4c::cafe:b00c]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 622D71A01E0; Mon, 21 Jul 2014 08:04:19 -0700 (PDT) Received: from [2001:67c:370:176:c975:8fee:4dcf:475] (helo=wireless-a-v6.meeting.ietf.org) by cappuccino.rob.sh with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1X9F8S-0005Of-KO; Mon, 21 Jul 2014 16:04:16 +0100 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Content-Type: text/plain; charset=windows-1252 From: Rob Shakir In-Reply-To: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08295C29@NKGEML512-MBS.china.huawei.com> Date: Mon, 21 Jul 2014 11:04:13 -0400 Content-Transfer-Encoding: quoted-printable Message-Id: <77CEA301-8C51-4694-8B22-9ADDE19389CE@rob.sh> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh>, <8D8AAE60-11B2-489A-877A-D315B8050D95@rob.sh> <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08295C29@NKGEML512-MBS.china.huawei.com> To: Xuxiaohu X-Mailer: Apple Mail (2.1878.6) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/4NaSZOVyEX1PW1EOu8QbOpj1a6o Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Jul 2014 15:05:02 -0000 Hi Xiaohu, On 21 Jul 2014, at 10:56, Xuxiaohu wrote: >> In terms of discovery of the capabilities of a mid-point -- do we = need to >> consider how, in a multi-area network, we discover the capabilities = of a >> mid-point which might not have information about it leaked between = areas? >=20 > Did you mean that when propagating the capabilities TLV/sub-TLV of a = given node across areas, the information (e.g., IP address) of the = originator of that capability TLV/sub-TLV is lost? I was more considering the case that the information is simply not = propagated into the =93downstream=94 area. There is no clear requirement = to me that we need propagate capabilities and/or prefix SIDs for = non-endpoint nodes across area boundaries, and hence we may not have = visibility of each mid-point on the path. r.= From nobody Mon Jul 21 08:13:43 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 91D5B1A0162; Mon, 21 Jul 2014 08:13:39 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 1.748 X-Spam-Level: * X-Spam-Status: No, score=1.748 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, CHARSET_FARAWAY_HEADER=3.2, MIME_8BIT_HEADER=0.3, MIME_CHARSET_FARAWAY=2.45, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id lqk8-allzfkP; Mon, 21 Jul 2014 08:13:38 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 4598D1A0137; Mon, 21 Jul 2014 08:13:37 -0700 (PDT) Received: from 172.18.7.190 (EHLO lhreml403-hub.china.huawei.com) ([172.18.7.190]) by lhrrg01-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id BKJ39989; Mon, 21 Jul 2014 15:13:35 +0000 (GMT) Received: from NKGEML403-HUB.china.huawei.com (10.98.56.34) by lhreml403-hub.china.huawei.com (10.201.5.217) with Microsoft SMTP Server (TLS) id 14.3.158.1; Mon, 21 Jul 2014 16:13:35 +0100 Received: from NKGEML512-MBS.china.huawei.com ([169.254.8.48]) by nkgeml403-hub.china.huawei.com ([10.98.56.34]) with mapi id 14.03.0158.001; Mon, 21 Jul 2014 23:13:29 +0800 From: Xuxiaohu To: Rob Shakir Thread-Topic: [spring] SPRING MPLS and Entropy Label Thread-Index: AQHPpPG60J2/V/fu6kuL32lhjiOWm5uqFS+AgACHrg3//30zgIAAiAAs Date: Mon, 21 Jul 2014 15:13:28 +0000 Message-ID: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08295C73@NKGEML512-MBS.china.huawei.com> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh>, <8D8AAE60-11B2-489A-877A-D315B8050D95@rob.sh> <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08295C29@NKGEML512-MBS.china.huawei.com>, <77CEA301-8C51-4694-8B22-9ADDE19389CE@rob.sh> In-Reply-To: <77CEA301-8C51-4694-8B22-9ADDE19389CE@rob.sh> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.47.149.178] Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/Ir7e9IqPf8lCC1Yt2RvrWBYEvVg Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: [mpls] =?gb2312?b?tPC4tDogW3NwcmluZ10gU1BSSU5HIE1QTFMgYW5kIEVu?= =?gb2312?b?dHJvcHkgTGFiZWw=?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Jul 2014 15:13:39 -0000 SGkgUm9iLA0KDQpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fDQq3orz+ yMs6IHNwcmluZyBbc3ByaW5nLWJvdW5jZXNAaWV0Zi5vcmddILT6se0gUm9iIFNoYWtpciBbcmpz QHJvYi5zaF0NCreiy83KsbzkOiAyMDE0xOo31MIyMcjVIDIzOjA0DQrK1bz+yMs6IFh1eGlhb2h1 DQqzrcvNOiBtcGxzQGlldGYub3JnOyBzcHJpbmdAaWV0Zi5vcmc7IGRyYWZ0LWtpbmktbXBscy1z cHJpbmctZW50cm9weS1sYWJlbEB0b29scy5pZXRmLm9yZw0K1vfM4jogUmU6IFtzcHJpbmddIFNQ UklORyBNUExTIGFuZCBFbnRyb3B5IExhYmVsDQoNCkhpIFhpYW9odSwNCg0KT24gMjEgSnVsIDIw MTQsIGF0IDEwOjU2LCBYdXhpYW9odSA8eHV4aWFvaHVAaHVhd2VpLmNvbT4gd3JvdGU6DQoNCj4+ IEluIHRlcm1zIG9mIGRpc2NvdmVyeSBvZiB0aGUgY2FwYWJpbGl0aWVzIG9mIGEgbWlkLXBvaW50 IC0tIGRvIHdlIG5lZWQgdG8NCj4+IGNvbnNpZGVyIGhvdywgaW4gYSBtdWx0aS1hcmVhIG5ldHdv cmssIHdlIGRpc2NvdmVyIHRoZSBjYXBhYmlsaXRpZXMgb2YgYQ0KPj4gbWlkLXBvaW50IHdoaWNo IG1pZ2h0IG5vdCBoYXZlIGluZm9ybWF0aW9uIGFib3V0IGl0IGxlYWtlZCBiZXR3ZWVuIGFyZWFz Pw0KPg0KPiBEaWQgeW91IG1lYW4gdGhhdCB3aGVuIHByb3BhZ2F0aW5nIHRoZSBjYXBhYmlsaXRp ZXMgVExWL3N1Yi1UTFYgb2YgYSBnaXZlbiBub2RlIGFjcm9zcyBhcmVhcywgdGhlIGluZm9ybWF0 aW9uIChlLmcuLCBJUCBhZGRyZXNzKSBvZiB0aGUgb3JpZ2luYXRvciBvZiB0aGF0IGNhcGFiaWxp dHkgVExWL3N1Yi1UTFYgaXMgbG9zdD8NCg0KSSB3YXMgbW9yZSBjb25zaWRlcmluZyB0aGUgY2Fz ZSB0aGF0IHRoZSBpbmZvcm1hdGlvbiBpcyBzaW1wbHkgbm90IHByb3BhZ2F0ZWQgaW50byB0aGUg obBkb3duc3RyZWFtobEgYXJlYS4gVGhlcmUgaXMgbm8gY2xlYXIgcmVxdWlyZW1lbnQgdG8gbWUg dGhhdCB3ZSBuZWVkIHByb3BhZ2F0ZSBjYXBhYmlsaXRpZXMgYW5kL29yIHByZWZpeCBTSURzIGZv ciBub24tZW5kcG9pbnQgbm9kZXMgYWNyb3NzIGFyZWEgYm91bmRhcmllcywgYW5kIGhlbmNlIHdl IG1heSBub3QgaGF2ZSB2aXNpYmlsaXR5IG9mIGVhY2ggbWlkLXBvaW50IG9uIHRoZSBwYXRoLg0K DQpbWGlhb2h1XSBJZiB3ZSBuZWVkIHZpc2liaWxpdHkgb2YgZWFjaCBtaWQtcG9pbnQgb24gdGhl IHBhdGggaW5kZWVkLCBkb2VzIGl0IG1lYW4gdGhhdCB0aGUgY2FwYWJpbGl0eSBvZiBlYWNoIG1p ZC1wb2ludCBzaG91bGQgYmUgcHJvcGFnYXRlZCBhY3Jvc3MgYXJlYSBib3VuZGFyaWVzPw0KDQpC ZXN0IHJlZ2FyZHMNClhpYW9odQ0KDQpyLg0KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX18NCnNwcmluZyBtYWlsaW5nIGxpc3QNCnNwcmluZ0BpZXRmLm9yZw0K aHR0cHM6Ly93d3cuaWV0Zi5vcmcvbWFpbG1hbi9saXN0aW5mby9zcHJpbmc= From nobody Mon Jul 21 08:21:49 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 560771A00AE; Mon, 21 Jul 2014 08:21:45 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.301 X-Spam-Level: X-Spam-Status: No, score=-1.301 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, J_CHICKENPOX_62=0.6, RP_MATCHES_RCVD=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id GlbSxkupaiIK; Mon, 21 Jul 2014 08:21:44 -0700 (PDT) Received: from cappuccino.rob.sh (cappuccino.rob.sh [IPv6:2a03:9800:10:4c::cafe:b00c]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 0932E1A002C; Mon, 21 Jul 2014 08:21:43 -0700 (PDT) Received: from [2001:67c:370:176:c975:8fee:4dcf:475] (helo=wireless-a-v6.meeting.ietf.org) by cappuccino.rob.sh with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1X9FPI-0005Qi-Mv; Mon, 21 Jul 2014 16:21:40 +0100 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Content-Type: text/plain; charset=GB2312 From: Rob Shakir In-Reply-To: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08295C73@NKGEML512-MBS.china.huawei.com> Date: Mon, 21 Jul 2014 11:21:37 -0400 Content-Transfer-Encoding: quoted-printable Message-Id: <936EB71F-CBD2-4547-9A07-1C55F40B4314@rob.sh> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh>, <8D8AAE60-11B2-489A-877A-D315B8050D95@rob.sh> <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08295C29@NKGEML512-MBS.china.huawei.com>, <77CEA301-8C51-4694-8B22-9ADDE19389CE@rob.sh> <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08295C73@NKGEML512-MBS.china.huawei.com> To: Xuxiaohu X-Mailer: Apple Mail (2.1878.6) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/LoD0A0CcvM_qaym7y4fZLkaWgSg Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Jul 2014 15:21:45 -0000 On 21 Jul 2014, at 11:13, Xuxiaohu wrote: > [Xiaohu] If we need visibility of each mid-point on the path indeed, = does it mean that the capability of each mid-point should be propagated = across area boundaries? This could be one solution. One could observe that if we need to = propagate mid-point information across area boundaries, then we are = beginning to reduce any (perceived) benefit of running multiple areas.=20= Please note, I am not trying to state the need for any solution to this = issue, just note that there are challenges with such an approach to the = authors of the draft. If the intention of the draft is to recommend an = approach to the SPRING+EL issue, then potentially such considerations = should be taken into account when considering the technical efficacy of = each of the options described in the document. Cheers, r.=20 From nobody Mon Jul 21 08:37:53 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 79AEE1A00B2 for ; Mon, 21 Jul 2014 08:37:51 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 1.748 X-Spam-Level: * X-Spam-Status: No, score=1.748 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, CHARSET_FARAWAY_HEADER=3.2, MIME_8BIT_HEADER=0.3, MIME_CHARSET_FARAWAY=2.45, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id imjt5jW_aZGl for ; Mon, 21 Jul 2014 08:37:49 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id ED6A51A0008 for ; Mon, 21 Jul 2014 08:37:46 -0700 (PDT) Received: from 172.18.7.190 (EHLO lhreml402-hub.china.huawei.com) ([172.18.7.190]) by lhrrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id BHL41019; Mon, 21 Jul 2014 15:37:45 +0000 (GMT) Received: from NKGEML408-HUB.china.huawei.com (10.98.56.39) by lhreml402-hub.china.huawei.com (10.201.5.241) with Microsoft SMTP Server (TLS) id 14.3.158.1; Mon, 21 Jul 2014 16:37:42 +0100 Received: from NKGEML506-MBX.china.huawei.com ([169.254.3.24]) by nkgeml408-hub.china.huawei.com ([10.98.56.39]) with mapi id 14.03.0158.001; Mon, 21 Jul 2014 23:37:35 +0800 From: Lizhenbin To: Martin Vigoureux , "mpls@ietf.org" Thread-Topic: =?gb2312?B?UHJlc2VudGF0aW9uIHNsaWRlcyBmb3IgTVBMUyBXRy8vtPC4tDogW21wbHNd?= =?gb2312?B?IFVyZ2VudCBbUmU6IElFVEY5MCAtIE1QTFMgLSBBZ2VuZGEgYXZhaWxhYmxl?= =?gb2312?Q?_-_Please_send_your_presentation_material]?= Thread-Index: AQHPpPmxre6LYWP8706jlHy0EzUkmg== Date: Mon, 21 Jul 2014 15:37:34 +0000 Message-ID: <5A5B4DE12C0DAC44AF501CD9A2B01A8D08231DA5@nkgeml506-mbx.china.huawei.com> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: yes X-MS-TNEF-Correlator: x-originating-ip: [10.47.164.245] Content-Type: multipart/mixed; boundary="_003_5A5B4DE12C0DAC44AF501CD9A2B01A8D08231DA5nkgeml506mbxchi_" MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/28JD63km0iYAxXDUnKQ2Bs88PxU Subject: [mpls] =?gb2312?b?UHJlc2VudGF0aW9uIHNsaWRlcyBmb3IgTVBMUyBXRy8v?= =?gb2312?b?tPC4tDogIFVyZ2VudCBbUmU6IElFVEY5MCAtIE1QTFMgLSBBZ2VuZGEgYXZh?= =?gb2312?b?aWxhYmxlIC0gUGxlYXNlIHNlbmQgeW91ciBwcmVzZW50YXRpb24gbWF0ZXJp?= =?gb2312?b?YWxd?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Jul 2014 15:37:51 -0000 --_003_5A5B4DE12C0DAC44AF501CD9A2B01A8D08231DA5nkgeml506mbxchi_ Content-Type: 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Received: from xmb-aln-x03.cisco.com ([169.254.6.216]) by xhc-rcd-x07.cisco.com ([173.37.183.81]) with mapi id 14.03.0123.003; Mon, 21 Jul 2014 12:29:00 -0500 From: "Kamran Raza (skraza)" To: "IJsbrand Wijnands (iwijnand)" , Loa Andersson Thread-Topic: [mpls] IPR poll on draft-ietf-mpls-mldp-node-protection Thread-Index: AQHPiqaDcD+QssIRAECEcWqCRFlZ9pt4Ty6AgAHS/oA= Date: Mon, 21 Jul 2014 17:28:59 +0000 Message-ID: References: <53A10938.1010602@pi.nu> <1C7B92DB-EC56-462F-941E-AEA1C986C47F@cisco.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.4.2.140509 x-originating-ip: [10.86.244.42] Content-Type: text/plain; charset="utf-8" Content-ID: <7F8AA51A363F154AB428F2C20DA9821C@emea.cisco.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/nv58lnG5V5BwuZ8hI-Vc1CEV4es Cc: "mpls@ietf.org" , "draft-ietf-mpls-mldp-node-protection@tools.ietf.org" , "mpls-chairs@tools.ietf.org" Subject: Re: [mpls] IPR poll on draft-ietf-mpls-mldp-node-protection X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Jul 2014 17:29:02 -0000 DQpJIGFtIG5vdCBhd2FyZSBpZiBhbnkgbmV3IElQUiBpbiBhZGRpdGlvbiB0byB3aGF0IHdhcyBh bHJlYWR5IGRpc2Nsb3NlZCBieQ0KSWNlL215c2VsZiBiYWNrIGluIEp1bmUgMjAxMw0KKHBsZWFz ZSBzZWUgaHR0cHM6Ly9kYXRhdHJhY2tlci5pZXRmLm9yZy9pcHIvMTcyNy8gZm9yIGRldGFpbHMv cmVmKS4NCg0KDQpUaGFua3MuDQrigLkNCkthbXJhbg0KDQpPbiAyMDE0LTA2LTE5LCAyOjMzIEFN LCAiSUpzYnJhbmQgV2lqbmFuZHMgKGl3aWpuYW5kKSIgPGljZUBjaXNjby5jb20+DQp3cm90ZToN Cg0KPkhpIEZvbGtzLA0KPg0KPkkgZG9uwrl0IGtub3cgb2YgYW55IElQUiBvdGhlciB0aGVuIGFs cmVhZHkgZGlzY2xvc2VkLg0KPg0KPlRoeCwNCj4NCj5JY2UuDQo+DQo+T24gMTggSnVuIDIwMTQs IGF0IDA1OjM2LCBMb2EgQW5kZXJzc29uIDxsb2FAcGkubnU+IHdyb3RlOg0KPg0KPj4gV29ya2lu 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bnN1bHRhbnQpICAgICBwaG9uZTogKzQ2IDczOSA4MSAyMSA2NA0KPg0KPl9fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fDQo+bXBscyBtYWlsaW5nIGxpc3QNCj5t cGxzQGlldGYub3JnDQo+aHR0cHM6Ly93d3cuaWV0Zi5vcmcvbWFpbG1hbi9saXN0aW5mby9tcGxz DQoNCg0K From nobody Mon Jul 21 10:54:51 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 99B231A0053 for ; Mon, 21 Jul 2014 10:54:48 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id m8sfcFcnkCH6 for ; Mon, 21 Jul 2014 10:54:47 -0700 (PDT) Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 8A1711A02A0 for ; Mon, 21 Jul 2014 10:54:46 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit To: mpls@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 5.6.1.p1 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <20140721175446.29065.11555.idtracker@ietfa.amsl.com> Date: Mon, 21 Jul 2014 10:54:46 -0700 From: IETF Secretariat Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/DPMVsGPnH0x_lyb1AcRrEmxx-6Y Subject: [mpls] Milestones changed for mpls WG X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Jul 2014 17:54:48 -0000 Changed milestone "Submit draft-ietf-mpls-ldp-hello-crypto-auth for publication", resolved as "Done". Changed milestone "Submit draft-ietf-mpls-extended-admin-group for publication", resolved as "Done". Changed milestone "Submit draft-ietf-mpls-psc-updates for publication", resolved as "Done". Changed milestone "Submit draft-ietf-mpls-smp-requirements for publication", set due date to September 2014 from April 2014. Changed milestone "Submit draft-ietf-mpls-mldp-node-protection for publication", set due date to October 2014 from September 2014. Changed milestone "Submit draft-ietf-mpls-seamless-mcast for publication", set due date to November 2014 from August 2014. Changed milestone "Submit draft-ietf-mpls-lsp-ping-relay-reply for publication", set due date to November 2014 from August 2014. URL: http://datatracker.ietf.org/wg/mpls/charter/ From nobody Mon Jul 21 10:56:32 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 890D71A0275 for ; Mon, 21 Jul 2014 10:56:30 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id lK79gPrnZxdr for ; Mon, 21 Jul 2014 10:56:29 -0700 (PDT) Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 88A091A02DE for ; Mon, 21 Jul 2014 10:56:27 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit To: mpls@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 5.6.1.p1 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <20140721175627.26959.1943.idtracker@ietfa.amsl.com> Date: Mon, 21 Jul 2014 10:56:27 -0700 From: IETF Secretariat Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/1C68a6Hixl5vxJF3db45zOPiFu0 Subject: [mpls] Milestones changed for mpls WG X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Jul 2014 17:56:30 -0000 URL: http://datatracker.ietf.org/wg/mpls/charter/ From nobody Mon Jul 21 11:00:30 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A19821A034A for ; Mon, 21 Jul 2014 11:00:26 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 4-ZecUTJnML5 for ; Mon, 21 Jul 2014 11:00:21 -0700 (PDT) Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 40AE01A0327 for ; Mon, 21 Jul 2014 11:00:12 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit To: mpls@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 5.6.1.p1 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <20140721180012.29065.38623.idtracker@ietfa.amsl.com> Date: Mon, 21 Jul 2014 11:00:12 -0700 From: IETF Secretariat Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/ta3MatGeHQuZRpizCEkc8BT4TDM Subject: [mpls] Milestones changed for mpls WG X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Jul 2014 18:00:26 -0000 Changed milestone "Submit draft-ietf-mpls-deprecate-bgp-entropy-label for publication", set state to active from review, accepting new milestone. URL: http://datatracker.ietf.org/wg/mpls/charter/ From nobody Tue Jul 22 05:50:11 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E8D981A8BB2 for ; Tue, 22 Jul 2014 05:50:09 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3rdpJec0kFom for ; Tue, 22 Jul 2014 05:50:08 -0700 (PDT) Received: from alln-iport-7.cisco.com (alln-iport-7.cisco.com [173.37.142.94]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id E2FD41ABB17 for ; Tue, 22 Jul 2014 05:49:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2478; q=dns/txt; s=iport; t=1406033394; x=1407242994; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=+lcpLKxGwGytwMvNCBHNJ4dESM5eWT1hdlL+Sl/gao8=; b=e88F60SMZNUpSrWbOXtqa+XJ+emkDpMEOpx3WXKsyj2O8RB8d/LHfabR FC1RjJ5md2iglxCybJ3eLS544vEwejZtSdUSjRMUsBoMQAfu3yAHoPiSi Be0DlG9D4W0fKCQ8dne1RaUYhwT/WFwgM4vAultlkLwIvuse4QramSx6M Y=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AkcFAGBdzlOtJV2P/2dsb2JhbABYgw6BKQTOWAGBDxZ2hAMBAQEDAWsDBgUFBwICAgEIEQQBAQEnBxsXFAkIAgQOBYg6CL9IFwSOZRACARwzBwaDKIEYBYoskHqUL4NEbIFF X-IronPort-AV: E=Sophos;i="5.01,710,1400025600"; d="scan'208";a="62984562" Received: from rcdn-core-7.cisco.com ([173.37.93.143]) by alln-iport-7.cisco.com with ESMTP; 22 Jul 2014 12:49:54 +0000 Received: from xhc-rcd-x13.cisco.com (xhc-rcd-x13.cisco.com [173.37.183.87]) by rcdn-core-7.cisco.com (8.14.5/8.14.5) with ESMTP id s6MCnrZK017757 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Tue, 22 Jul 2014 12:49:53 GMT Received: from xmb-rcd-x10.cisco.com ([169.254.15.102]) by xhc-rcd-x13.cisco.com ([173.37.183.87]) with mapi id 14.03.0123.003; Tue, 22 Jul 2014 07:49:52 -0500 From: "George Swallow (swallow)" To: Loa Andersson Thread-Topic: IPR poll on draft-akiya-mpls-entropy-lsp-ping Thread-Index: AQHPndnlWAELLlfCN060Cij3pKhM/JudT+wAgACmtoCADnhaAA== Date: Tue, 22 Jul 2014 12:49:52 +0000 Message-ID: References: <53C13FDF.1000604@pi.nu> <53C23A83.7010201@pi.nu> In-Reply-To: <53C23A83.7010201@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.252.213] Content-Type: text/plain; charset="iso-8859-1" Content-ID: <44267CC7D4C2C34CA4BB359C4B61AE64@emea.cisco.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/nPnFLtgWJv0IB1oq6I4H0oMFL3A Cc: "mpls@ietf.org" , "Nagendra Kumar Nainar \(naikumar\)" , "draft-akiya-mpls-entropy-lsp-ping@tools.ietf.org" Subject: Re: [mpls] IPR poll on draft-akiya-mpls-entropy-lsp-ping X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Jul 2014 12:50:10 -0000 I'm not aware of any IPR beyond the two that are linked to the mols/documen= ts page. George On Jul 13, 2014, at 3:51 AM, Loa Andersson wrote: > Folks, >=20 > I've responses from >=20 > Nobo, Sam, and Carlos. >=20 > Need responses from >=20 > George, Andy and Nagendara >=20 > Please note that Nagendra is listed as contributing author and need > to respond. >=20 > /Loa >=20 > On 2014-07-12 23:54, Nobo Akiya (nobo) wrote: >> Hi Loa, >>=20 >> I am not aware of any other IPRs to this document besides IPRs # 2221 an= d # 2305. >>=20 >> Thanks! >>=20 >> -Nobo >>=20 >>> -----Original Message----- >>> From: Loa Andersson [mailto:loa@pi.nu] >>> Sent: Saturday, July 12, 2014 10:02 AM >>> To: mpls@ietf.org >>> Cc: mpls-chairs@tools.ietf.org; draft-akiya-mpls-entropy-lsp- >>> ping@tools.ietf.org; Martin Vigoureux >>> Subject: IPR poll on draft-akiya-mpls-entropy-lsp-ping >>>=20 >>> Working Group, >>>=20 >>> The authors of draft-akiya-mpls-entropy-lsp-ping has told the wg chairs= that >>> the draft is ready to be polled to see uf we have support to make it a >>> working group document. >>>=20 >>> While addressing the last procedures details we will start the the IPR >>> poll.This mail starts that IPR poll. >>>=20 >>> Are you aware of any IPR that applies to draft-akiya-mpls-entropy- lsp-= ping? >>>=20 >>> If so, has this IPR been disclosed in compliance with IETF IPR rules (s= ee RFCs >>> 3979, 4879, 3669 and 5378 for more details). >>>=20 >>> Currently there are two IPR disclosures that relates to this document. >>>=20 >>> If you are listed as a document author or contributor please respond to= this >>> email regardless of whether or not you are aware of any relevant IPR. *= The >>> response needs to be sent to the MPLS wg mailing list.* The document wi= ll >>> not advance to the next stage until a response has been received from e= ach >>> author and contributor. >>>=20 >>> If you are on the MPLS WG email list but are not listed as an author or >>> contributor, then please explicitly respond only if you are aware of an= y IPR >>> that has not yet been disclosed in conformance with IETF rules. >>>=20 >>> Thanks, Loa >>> (as MPLS WG co-chair) >=20 > --=20 >=20 >=20 > Loa Andersson email: loa@mail01.huawei.com > Senior MPLS Expert loa@pi.nu > Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Tue Jul 22 05:56:57 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5B36E1A00A8; Tue, 22 Jul 2014 05:56:52 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -101.9 X-Spam-Level: X-Spam-Status: No, score=-101.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Nsypnycev0Df; Tue, 22 Jul 2014 05:56:50 -0700 (PDT) Received: from asmtp4.iomartmail.com (asmtp4.iomartmail.com [62.128.201.175]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 0AB571A0B0B; Tue, 22 Jul 2014 05:56:49 -0700 (PDT) Received: from asmtp4.iomartmail.com (localhost.localdomain [127.0.0.1]) by asmtp4.iomartmail.com (8.13.8/8.13.8) with ESMTP id s6MCumD7016927; Tue, 22 Jul 2014 13:56:48 +0100 Received: from 950129200 (dhcp-b3fb.meeting.ietf.org [31.133.179.251]) (authenticated bits=0) by asmtp4.iomartmail.com (8.13.8/8.13.8) with ESMTP id s6MCukhi016913 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO); Tue, 22 Jul 2014 13:56:47 +0100 From: "Adrian Farrel" To: , Date: Tue, 22 Jul 2014 13:56:50 +0100 Message-ID: <0a5301cfa5ac$6825a810$3870f830$@olddog.co.uk> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 14.0 Thread-Index: Ac+lrDblFl8JW6QbRJmmL3RziD80Ig== Content-Language: en-gb X-TM-AS-MML: disable X-TM-AS-Product-Ver: IMSS-7.1.0.1576-7.5.0.1018-20832.007 X-TM-AS-Result: No--12.942-10.0-31-10 X-imss-scan-details: No--12.942-10.0-31-10 X-TMASE-MatchedRID: oXSYuYko9fW+f4AWV7koYpFVDMlVCkWeRNgaAQZwtvLSYAzZ6KmqWiDV X+rtfKhFe90HnwLjz9Ybv5DeMKZl+XHVdX7/QM0wALBxQHkJtWr6mRiZWXNny+jCW3sOvH3bxcb MLAKq7YqXFZdE28TAzJuVoHk2NGVjRzLiTrEr9wL6daZahG7qsaO7Nt6iP+dX+3g863hsMpHa0c p3Dczxw/i12qLq8EUdrAnhCV4MJPmveTp3UjBuIPzu9Lw9C7fAaIqWsHxNIOrD3h2nmZ4BQRND3 wNw/alWc5hDpbdtHF4n9WsdM8RFdF2kuSHmn3uDzFOoeBdH/n2TgV2heE0WDQZbeEWcL03VWXOj 3NIpqIo7ef1IrGI+Tgh//gBB6K3YwacxYVzCGcBmVHNo7XGknYVdLK46KrcfaFS7OYJKPS/pJ6q AR9mJ/LLSYTqRH1LyMagTEj7fGJKLYaqu+AuRavSG/+sPtZVkknjBMY7iKBIgTu9XTnBqm/IT0d cXGT9tYCbEtPclhZF0fTzLMWE5CmSBCik5/ZoSt1AhvyEKdj4ZiTLIQu4YpJsoi2XrUn/JyeMtM D9QOgDGlDvsLUDW2o6HM5rqDwqttivIExMylat97l/Sk0ESklp2bIxGOtZBB9T3NSP1I6oz4gAM viISeA== Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/7XiZXLwp-zENVU4_ogG-RFXFQH8 Subject: [mpls] Progressing foo-over-UDP X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: adrian@olddog.co.uk List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Jul 2014 12:56:52 -0000 In London I took an action to write up suggested text for how to handle the concerns of congestion and checksum in UDP-over-foo. I think we had some agreement of what was needed (look at the minutes of TSVWG - or was it TSV Area? - from London). Of course, I have let you all down. I have about 75% of the necessary text for MPLS-over-UDP (as a concrete example), but I am not complete. You don't need to know my excuses. Attached below (so you can laugh at me) is the text I have so far. it is work in progress, but since I am currently getting in the way, some of you might want to take the pen (if no-one wants to, I will try to continue and complete this). Cheers, Adrian ================== x. Applicability and Deployment of MPLS-in-UDP It is helpful to categorise the type of networks in which this solution might be deployed. That is, it is useful to look at the type of network over which the UDP tunnel might run, and the type of network that may be running MPLS. An understanding of these categories will lead to the realization that deploying MPLS-in-UDP in some environments is entirely safe, in other scenarios might cause issues to the networks involved but is a local choice for the operators of those networks, while in other situations the deployment might be significantly harmful to other services or traffic outside the responsibility of the operator deploying MPLS-in-UDP. In broad terms these deployment categories can be listed as follows: - Tunneling across the Internet - Tunneling over a provider network in a customer/provider relationship - Tunneling in a client/server relationship owned by a single operator - Tunneling within a "flat" network The remainder of this section describes the deployment of MPLS-in-UDP in these networks, and gives warnings, advice, and caveats appropriate to those scenarios with special reference to congestion avoidance and the use of checksums. The use made of MPLS-in-UDP by applications must be cognisant of the underlying network deployment. However, it needs to be understood that an end-point application is generally unaware of the services or connectivity over which it is sending data. That is, an end-point application is sending IP data possibly using TCP or UDP, and that data is encapsulated in MPLS somewhere within the network, and then those MPLS packets are themselves encapsulated in UDP as described in this document. That means that the decision points for the concerns and choices described in the sections that follow are at the point of encapsulation of MPLS in UDP, and at the time of deployment of the encapsulation function. While there are possibilities to apply back-pressure to applications, when there is tunneling within tunnels and a significant amount of multiplexing of flows within flows (as is the case with MPLS-in-UDP) these techniques are hard to apply and may have less immediate effect. Implementers are advised to note that widely deployable implementations have to provide the function set that is needed in each of the deployment scenarios discussed below. That is, those implementations that only provide a subset of the functionality are not suitable for deployment in the full set of scenarios. The text in these sections is not intended to be, and should not be taken as, broader guidance for the issues of tunneling different protocols over UDP. x.1. Congestion Considerations End-to-end traffic flows may be multiplexed into MPLS LSPs, and those LSPs may be multiplexed into a single UDP tunnel. These UDP tunnels appear as single flows in the core IP network over which the tunnel flows. Thus, any congestion issues related to the core network and caused by end-to-end traffic flows may be hard to report back to the head ends of the flows causing the congestion. The impact of congestion must be considered both in terms of the effect on the rest of the network of a UDP tunnel that is consuming excessive capacity, and in terms of the effect on the flows using the UDP tunnels in particular if packets are queued (causing delay or jitter) or dropped. Various mechanisms exist to propagate congestion information to the source of flows either when congestion has occurred or when it is perceived to be imminent. It should be noted that in the case of a tunnel (such as a UDP tunnel), the source of a flow is the head end of the tunnel. That is, any congestion notification from the core network will be propagated to the head end of the tunnel, not to the original source of the traffic. The head end of a UDP tunnel can take a number of actions when it is informed about congestion. No comment is made here about which action is best or even appropriate, but section x.3 discusses these actions in the context of the different deployment scenarios. - Do nothing assuming that the burden of congestion will be carried by other flows, or that the fact of congestion on the UDP tunnel will cause back-pressure in the payload flows. - Pass on the congestion information to the payload flows. However, in this instance the payload of the UDP tunnel is MPLS flows, and the mechanisms for congestion notification in MPLS flows are lacking. - Throttle the data being placed onto the UDP tunnel by queuing or dropping packets from the payload flows. - Change the flows that are in a tunnel by putting some of them in a different tunnel. This may have no effect on the congestion, but in some networks with ECMP may result in an improvement. - Completely fail one or more flows carried in the tunnel, or even fail the entire tunnel. This mechanism is sometimes known as "circuit breaker". x.2. UDP Checksum Considerations is checksum an issue what can be done about it - use it or not x.3. Deployment Scenarios x.3.1. MPLS-in-UDP over the Public Internet - Tunneling across the Internet The use of MPLS-in-UDP over the public Internet is NOT RECOMMENDED. x.3.2. MPLS-in-UDP in Managed Networks - Tunneling over a provider network in a customer/provider relationship - Tunneling in a client/server relationship owned by a single operator x.3.3. MPLS-in-UDP in Private Networks - Tunneling in a client/server relationship owned by a single operator - Tunneling within a "flat" network From nobody Tue Jul 22 05:59:48 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E5DD31A0AC0; Tue, 22 Jul 2014 05:59:43 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id SPb3wOdH-PIw; Tue, 22 Jul 2014 05:59:42 -0700 (PDT) Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 8AB451A0B0E; Tue, 22 Jul 2014 05:59:40 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: i-d-announce@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 5.6.1.p1 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <20140722125940.13655.25101.idtracker@ietfa.amsl.com> Date: Tue, 22 Jul 2014 05:59:40 -0700 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/oSXapWmUHfNe_buPbcHIR-Rmx6I Cc: mpls@ietf.org Subject: [mpls] I-D Action: draft-ietf-mpls-smp-requirements-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Jul 2014 12:59:44 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF. Title : Requirements for MPLS-TP Shared Mesh Protection Authors : Yaacov Weingarten Sam Aldrin Ping Pan Jeong-dong Ryoo Greg Mirsky Filename : draft-ietf-mpls-smp-requirements-07.txt Pages : 15 Date : 2014-07-22 Abstract: This document presents the basic network objectives for the behavior of shared mesh protection (SMP) which are not based on control plane support. This is an expansion of the basic requirements presented in RFC 5654 "Requirements for the Transport Profile of MPLS" and RFC 6372 "MPLS Transport Profile (MPLS-TP) Survivability Framework". This document provides requirements for any mechanism that would be used to implement SMP for MPLS-TP data paths, in networks that delegate protection switch coordination to the data plane. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-smp-requirements/ There's also a htmlized version available at: http://tools.ietf.org/html/draft-ietf-mpls-smp-requirements-07 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-smp-requirements-07 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Tue Jul 22 06:33:02 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 0C2281B27D9; Tue, 22 Jul 2014 06:32:52 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -96.503 X-Spam-Level: X-Spam-Status: No, score=-96.503 tagged_above=-999 required=5 tests=[BAYES_20=-0.001, CHARSET_FARAWAY_HEADER=3.2, MIME_8BIT_HEADER=0.3, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tsv0G-nJ8Kmg; Tue, 22 Jul 2014 06:32:49 -0700 (PDT) Received: from smtpeg.etri.re.kr (smtpeg2.etri.re.kr [129.254.27.142]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 673FF1B27D4; Tue, 22 Jul 2014 06:32:49 -0700 (PDT) Received: from SMTP1.etri.info (129.254.28.71) by SMTPEG2.etri.info (129.254.27.142) with Microsoft SMTP Server (TLS) id 14.1.355.2; Tue, 22 Jul 2014 22:32:48 +0900 Received: from SMTP2.etri.info ([169.254.2.160]) by SMTP1.etri.info ([10.2.6.30]) with mapi id 14.01.0355.002; Tue, 22 Jul 2014 22:32:45 +0900 From: =?ks_c_5601-1987?B?t/nBpLW/?= To: Lou Berger Thread-Topic: Uploaded draft-ietf-mpls-smp-requirements-07 Thread-Index: AQHPpbFrWPotK+BDYUSN4fLjzJrAvQ== Date: Tue, 22 Jul 2014 13:32:44 +0000 Message-ID: <5B4A6CBE3924BB41A3BEE462A8E0B75A2874C922@SMTP2.etri.info> Accept-Language: ko-KR, en-US Content-Language: ko-KR X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [129.254.26.37] Content-Type: text/plain; charset="ks_c_5601-1987" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/9Ge36_nNpI3JxKM4FKvgZV_gFjw Cc: "rtg-dir@ietf.org" , "mpls@ietf.org" , "draft-ietf-mpls-smp-requirements.all@tools.ietf.org" , "rtg-ads@tools.ietf.org" Subject: [mpls] Uploaded draft-ietf-mpls-smp-requirements-07 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Jul 2014 13:32:52 -0000 SGksIGFsbC4NCg0KVGhlIGF1dGhvcnMgb2YgdGhpcyBkb2N1bWVudCB1cGxvYWRlZCBhIG5ldyB2 ZXJzaW9uLCB3aGljaCByZXNvbHZlcyBhbGwgdGhlIGNvbW1lbnRzIHJhaXNlZCBzbyBmYXIuIA0K DQpCZXN0IHJlZ2FyZHMsDQoNCkplb25nLWRvbmcNCg0K From nobody Tue Jul 22 07:22:58 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 4BE591A001B; Tue, 22 Jul 2014 07:22:56 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id GjDlcgee8hBr; Tue, 22 Jul 2014 07:22:53 -0700 (PDT) Received: from cappuccino.rob.sh (cappuccino.rob.sh [IPv6:2a03:9800:10:4c::cafe:b00c]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D8BF41B28DE; Tue, 22 Jul 2014 07:22:51 -0700 (PDT) Received: from [31.133.179.3] (helo=dhcp-b303.meeting.ietf.org) by cappuccino.rob.sh with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1X9axt-0002Ya-9g; Tue, 22 Jul 2014 15:22:49 +0100 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Content-Type: text/plain; charset=windows-1252 From: Rob Shakir In-Reply-To: <25011_1405997557_53CDD1F5_25011_16883_1_9E32478DFA9976438E7A22F69B08FF92043E06@OPEXCLILM34.corporate.adroot.infra.ftgroup> Date: Tue, 22 Jul 2014 10:22:44 -0400 Content-Transfer-Encoding: quoted-printable Message-Id: <10DD5659-8B99-42A4-9B1D-18439CF0C832@rob.sh> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <25011_1405997557_53CDD1F5_25011_16883_1_9E32478DFA9976438E7A22F69B08FF92043E06@OPEXCLILM34.corporate.adroot.infra.ftgroup> To: "" X-Mailer: Apple Mail (2.1878.6) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/r4231B_sL2Pk_r7rqUDuDPw_p1k Cc: mpls@ietf.org, "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Jul 2014 14:22:56 -0000 Hi Stephane, On 21 Jul 2014, at 22:52, = wrote: > Hi Rob, >=20 > Many thanks to raise this important subject back on the table. > Entropy label in SPRING is mainly a matter of what are the current = capabilities of our favorite vendor's current HW ... Unfortunately, I = think we are touching something quite "secret" and vendors would not = share their issues publicly :) There are two things that we need to achieve w.r.t SR/MPLS and EL from = my perspective: 1) How do we exploit EL with *today=92s* hardware such that SR LSPs can = be efficiently load shared? 2) Going forward, which of the approaches that this draft identifies for = dealing with deep label stacks produced by SR/MPLS should we optimise = for? So, yes, I agree that there=92s something around current capabilities = that we need to figure out =97 but equally, I=92d like to visit question = (2), such that we can see whether the WG thinks that it is possible that = we can reach a recommendation and hence future hardware revisions can = potentially focus on optimising for one particular SR/MPLS + EL = approach.=20 > I think some options may also introduce some "HW capability" issues : > - reusable EL and EL top of the stack : need multiple MPLS operation = , so it may require forwarding feedback loops on some HWs reducing the = forwarding capacity >=20 > Personally, I don't like (hate :) ), the multiple EL/ELI (at each = tunnel level or at specific point of insertion) because it would again = reduce the available MTU for the customer jumbo frames. ACK =97 this is one of the reasons that I would like to understand the = author=92s intentions on this draft. At the moment, the draft is a = taxonomy of the approaches, but rather stops short of making any = recommendations. It sounds like you=92d be supportive of asking the = authors to extend this draft to making a recommendation? :-) Cheers, r. From nobody Tue Jul 22 07:27:41 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8B0481B2919; Tue, 22 Jul 2014 07:27:36 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qFowUO1ZtdBj; Tue, 22 Jul 2014 07:27:30 -0700 (PDT) Received: from relais-inet.francetelecom.com (relais-ias91.francetelecom.com [193.251.215.91]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 76A3B1B290E; Tue, 22 Jul 2014 07:27:30 -0700 (PDT) Received: from omfedm05.si.francetelecom.fr (unknown [xx.xx.xx.1]) by omfedm11.si.francetelecom.fr (ESMTP service) with ESMTP id ABC0A3B4332; Tue, 22 Jul 2014 16:27:28 +0200 (CEST) Received: from Exchangemail-eme2.itn.ftgroup (unknown [10.114.31.16]) by omfedm05.si.francetelecom.fr (ESMTP service) with ESMTP id 88E2D35C074; Tue, 22 Jul 2014 16:27:28 +0200 (CEST) Received: from OPEXCLILM34.corporate.adroot.infra.ftgroup ([169.254.4.77]) by OPEXCLILH05.corporate.adroot.infra.ftgroup ([10.114.31.16]) with mapi id 14.03.0181.006; Tue, 22 Jul 2014 16:27:28 +0200 From: To: Rob Shakir Thread-Topic: [spring] SPRING MPLS and Entropy Label Thread-Index: AQHPpPGzFOMOyOFpYEWM2i7SQsHvQpurYA2ggAClVgCAACK8cA== Date: Tue, 22 Jul 2014 14:27:27 +0000 Message-ID: <26290_1406039248_53CE74D0_26290_10984_1_9E32478DFA9976438E7A22F69B08FF92044175@OPEXCLILM34.corporate.adroot.infra.ftgroup> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <25011_1405997557_53CDD1F5_25011_16883_1_9E32478DFA9976438E7A22F69B08FF92043E06@OPEXCLILM34.corporate.adroot.infra.ftgroup> <10DD5659-8B99-42A4-9B1D-18439CF0C832@rob.sh> In-Reply-To: <10DD5659-8B99-42A4-9B1D-18439CF0C832@rob.sh> Accept-Language: fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.168.234.1] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-PMX-Version: 6.0.3.2322014, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2014.7.22.100920 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/odwBXcypOIIwNSN4F8bL0dZrucE Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Jul 2014 14:27:36 -0000 > It sounds like you'd be supportive of asking the authors to extend this d= raft to making a recommendation? :-) Completely right :) -----Original Message----- From: Rob Shakir [mailto:rjs@rob.sh]=20 Sent: Tuesday, July 22, 2014 10:23 To: LITKOWSKI Stephane SCE/IBNF Cc: spring@ietf.org; draft-kini-mpls-spring-entropy-label@tools.ietf.org; m= pls@ietf.org Subject: Re: [spring] SPRING MPLS and Entropy Label Hi Stephane, On 21 Jul 2014, at 22:52, wrote: > Hi Rob, >=20 > Many thanks to raise this important subject back on the table. > Entropy label in SPRING is mainly a matter of what are the current capabi= lities of our favorite vendor's current HW ... Unfortunately, I think we ar= e touching something quite "secret" and vendors would not share their issu= es publicly :) There are two things that we need to achieve w.r.t SR/MPLS and EL from my p= erspective: 1) How do we exploit EL with *today's* hardware such that SR LSPs can be ef= ficiently load shared? 2) Going forward, which of the approaches that this draft identifies for de= aling with deep label stacks produced by SR/MPLS should we optimise for? So, yes, I agree that there's something around current capabilities that we= need to figure out - but equally, I'd like to visit question (2), such tha= t we can see whether the WG thinks that it is possible that we can reach a = recommendation and hence future hardware revisions can potentially focus on= optimising for one particular SR/MPLS + EL approach.=20 > I think some options may also introduce some "HW capability" issues : > - reusable EL and EL top of the stack : need multiple MPLS operation , s= o it may require forwarding feedback loops on some HWs reducing the forward= ing capacity >=20 > Personally, I don't like (hate :) ), the multiple EL/ELI (at each tunnel = level or at specific point of insertion) because it would again reduce the = available MTU for the customer jumbo frames. ACK - this is one of the reasons that I would like to understand the author= 's intentions on this draft. At the moment, the draft is a taxonomy of the = approaches, but rather stops short of making any recommendations. It sounds= like you'd be supportive of asking the authors to extend this draft to mak= ing a recommendation? :-) Cheers, r. ___________________________________________________________________________= ______________________________________________ Ce message et ses pieces jointes peuvent contenir des informations confiden= tielles ou privilegiees et ne doivent donc pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu= ce message par erreur, veuillez le signaler a l'expediteur et le detruire ainsi que les pieces jointes. Les messages el= ectroniques etant susceptibles d'alteration, Orange decline toute responsabilite si ce message a ete altere, deforme ou = falsifie. Merci. This message and its attachments may contain confidential or privileged inf= ormation that may be protected by law; they should not be distributed, used or copied without authorisation. If you have received this email in error, please notify the sender and dele= te this message and its attachments. As emails may be altered, Orange is not liable for messages that have been = modified, changed or falsified. Thank you. From nobody Tue Jul 22 07:31:32 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 4B0191B290B for ; Tue, 22 Jul 2014 07:31:29 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.902 X-Spam-Level: X-Spam-Status: No, score=-1.902 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id cIclRGATt2S0 for ; Tue, 22 Jul 2014 07:31:26 -0700 (PDT) Received: from na01-bn1-obe.outbound.protection.outlook.com (mail-bn1blp0186.outbound.protection.outlook.com [207.46.163.186]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 842421B28F4 for ; Tue, 22 Jul 2014 07:31:08 -0700 (PDT) Received: from CO1PR05MB457.namprd05.prod.outlook.com (10.141.72.141) by CO1PR05MB460.namprd05.prod.outlook.com (10.141.72.152) with Microsoft SMTP Server (TLS) id 15.0.990.7; Tue, 22 Jul 2014 14:31:00 +0000 Received: from CO1PR05MB457.namprd05.prod.outlook.com ([169.254.4.7]) by CO1PR05MB457.namprd05.prod.outlook.com ([169.254.4.7]) with mapi id 15.00.0990.007; Tue, 22 Jul 2014 14:31:00 +0000 From: Ravi Singh To: "Nobo Akiya (nobo)" , "draft-ravisingh-mpls-el-for-seamless-mpls@tools.ietf.org" Thread-Topic: Comments on draft-ravisingh-mpls-el-for-seamless-mpls Thread-Index: Ac7bkJ2xL0omkkvnRZ2jAuXiLdjyFTBm3teAAQjoYdABGgewQA== Date: Tue, 22 Jul 2014 14:30:59 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [66.129.239.12] x-microsoft-antispam: BCL:0;PCL:0;RULEID: x-forefront-prvs: 02801ACE41 x-forefront-antispam-report: SFV:NSPM; SFS:(6009001)(51704005)(189002)(199002)(13464003)(41574002)(377454003)(31966008)(561944003)(101416001)(74502001)(86362001)(81542001)(77982001)(83322001)(85306003)(80022001)(81342001)(15202345003)(33646002)(74316001)(76482001)(77096002)(19580405001)(46102001)(15975445006)(19580395003)(64706001)(74662001)(66066001)(99396002)(20776003)(4396001)(106356001)(105586002)(79102001)(95666004)(76176999)(21056001)(54356999)(92566001)(83072002)(50986999)(107046002)(2656002)(99286002)(85852003)(76576001)(87936001)(108616002)(24736002); DIR:OUT; SFP:; SCL:1; SRVR:CO1PR05MB460; H:CO1PR05MB457.namprd05.prod.outlook.com; FPR:; MLV:sfv; PTR:InfoNoRecords; MX:1; LANG:en; Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: juniper.net Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/zBH0bMMVgBRoNaBsOLjfzUmK22E Cc: "mpls@ietf.org" Subject: Re: [mpls] Comments on draft-ravisingh-mpls-el-for-seamless-mpls X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Jul 2014 14:31:29 -0000 Hi Nobo Please see inline for []. > -----Original Message----- > From: Nobo Akiya (nobo) [mailto:nobo@cisco.com] > Sent: Wednesday, July 16, 2014 7:24 PM > To: Ravi Singh; draft-ravisingh-mpls-el-for-seamless-mpls@tools.ietf.org > Cc: mpls@ietf.org > Subject: RE: Comments on draft-ravisingh-mpls-el-for-seamless-mpls >=20 > Hi Ravi, et al, >=20 > [comment 1] > The document seems to be describing two different topics. > 1. Data plane behavior regarding ELI/EL with stitched and/or hierarchical= LSPs. > 2. How to extend EL usage wider than actual capabilities of involved LSRs= . >=20 > I agree that the two topics are rather related, but I find (1) to be a ve= ry useful > information to vendors and (2) to be an optimization. > Is there any particular reason why the two topics cannot be broken up int= o two > separate documents? That may result in much clearer document [] =09 I tend to think that 2 (being use-cases) is the reason that 1 is even worth= being discussed. That was the intent of having a single document for those.=20 >=20 > [comment 2] > From what I understand of the data plane behaviors, they boil down to > following 4 things. >=20 > Behavior for an ingress LSR programmed to push [transport label(s), ELI, = EL]: > a. The LSR SHOULD NOT push [ELI, EL] if the label stack already contain [= ELI, > EL], and SHOULD only push [transport label(s)]. > b. If the LSR popping N transport labels includes popping of [ELI, EL], t= he LSR > MAY reuse the popped [EL] value when needing to push [ELI, EL]. > c. If the LSR popping N transport labels expose [ELI, EL] as top labels, = the LSR > MAY preserve the exposed [ELI, EL] in the label stack and only push [tran= sport > label(s)]. >=20 > Behavior for an ingress LSR of ELC-not-capable LSP: > d. The LSR MUST ensure [ELI, EL] do not immediately follow label(s) pushe= d or > swapped by the LSR. >=20 > Note, in the document, (a) is described as a procedure if [ELI, EL] are f= ound > under the top label only, but I don't think we need to make such restrict= ion. [] I did not intend for this restriction to be there.=20 Could you point to the specific language that makes you infer the above? > Section 4.3. does is likely the reason why you restricted this to the top= label > only, but I prefer that this rule be kept simple and not restricted. If = you really > want to ensure that [ELI, EL] appears near the top, then additional rule = will do > the job. >=20 > a-variant: The LSR SHOULD NOT push [ELI, EL] if the label stack already c= ontain > [ELI, EL], and SHOULD only push [transport label(s)]. The LSR MAY still p= ush > [transport label(s), ELI, EL] if [ELI, EL] found is deep in the label sta= ck. >=20 > Do above (a-d), more or less, align with data plane rules you have in min= d? >=20 [] a & c do and are already there in the doc.=20 I do not intend for b/d to be included in the doc.=20 Could you point to specific reasons for considering b/d? >=20 > [comment 3 (nitpick)] >=20 > [snip from draft-ravisingh-mpls-el-for-seamless-mpls-02] >=20 > 3. Key attributes of the entropy label solution: Summary from [EL-RFC] [.= ..] > - Transport-label-POPing router POPs (ELI+EL) PHR/egress of the > LSP is responsible for POPing off the (ELI+EL) after it has > been exposed as the top label on the packet due to POPing the > transport label. The removal of the (ELI+EL) is done either > when the ELI is the top label; or when the ELI is next label > below the top label being POPed. >=20 > It's a bit of a nitpick, but above is probably not an accurate reflection= of > RFC6790 regarding Penultimate Hop LSR behavior, as RFC6790 states: >=20 > [snip from RFC6790] >=20 > 4.4. Penultimate Hop LSR >=20 > No change is needed at penultimate hop LSRs. However, a PHP LSR that > recognizes the ELI MAY choose to pop the ELI and following label > (which should be an entropy label) in addition to popping the tunnel > label, provided that doing so doesn't diminish its ability to load > balance on the next hop. [] I don't see the above two blocks to be inconsistent. Could you be more specific? Thanks Ravi > Thanks! >=20 > -Nobo >=20 > > -----Original Message----- > > From: Ravi Singh [mailto:ravis@juniper.net] > > Sent: Friday, July 11, 2014 1:21 PM > > To: Nobo Akiya (nobo); draft-ravisingh-mpls-el-for-seamless- > > mpls@tools.ietf.org > > Cc: mpls@ietf.org > > Subject: RE: Comments on draft-ravisingh-mpls-el-for-seamless-mpls > > > > Hi Nobo > > We have a new version of this draft: > > http://tools.ietf.org/html/draft-ravisingh-mpls-el-for-seamless- > > mpls-02 > > > > > > > -----Original Message----- > > > From: mpls-bounces@ietf.org [mailto:mpls-bounces@ietf.org] On Behalf > > > Of Nobo Akiya (nobo) > > > Sent: Thursday, November 07, 2013 12:23 AM > > > To: draft-ravisingh-mpls-el-for-seamless-mpls@tools.ietf.org > > > Cc: mpls@ietf.org > > > Subject: [mpls] Comments on > > > draft-ravisingh-mpls-el-for-seamless-mpls > > > > > > Hi Ravi, Yimin, > > > > > > I have couple of comments. > > > > > > 1. Stitched LSP - Proposed really offers optimization in stitched > > > scenario. > > > > > > a. Allows EL usage for even wider than just EL capable segments. > > > b. Potentially speeds data traversal over stitched LSP as number of > > > times ELI/EL popped/pushed are reduced. > > > > > > Document sort of eludes to this, but I think it'll be beneficial to > > > state that things will work as is (RFC6790), but proposal can be > > > used as optimization. > > > > The optimization aspect has been called out in the latest version. > > > > > > > 2. Hierarchical LSP > > > > > > > B. Preventing multiple (ELI+EL) pairs underneath a given forwardi= ng > > > > label in the stack: > > > > > > I highly support above statement. Having multiple ELs in the stack > > > will, yet again, cause more changes required in LSP traceroute wrt > > > multipath information handling, and requires even more complex > > > computation by initiator to traverse ECMP paths. > > > > Great that we are in agreement. > > Ravi > > > > > > > > > -Nobo > > > > > > _______________________________________________ > > > mpls mailing list > > > mpls@ietf.org > > > https://www.ietf.org/mailman/listinfo/mpls > > > From nobody Tue Jul 22 07:39:18 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6119F1B288E; Tue, 22 Jul 2014 07:39:15 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.752 X-Spam-Level: X-Spam-Status: No, score=-1.752 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, MIME_CHARSET_FARAWAY=2.45, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001] 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+0800 From: Xuxiaohu To: "stephane.litkowski@orange.com" , "Rob Shakir" Thread-Topic: [spring] SPRING MPLS and Entropy Label Thread-Index: AQHPpbkqcvy6UadNakKtgoaxQFrlmpusJ9pg Date: Tue, 22 Jul 2014 14:39:04 +0000 Message-ID: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08295FC3@NKGEML512-MBS.china.huawei.com> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <25011_1405997557_53CDD1F5_25011_16883_1_9E32478DFA9976438E7A22F69B08FF92043E06@OPEXCLILM34.corporate.adroot.infra.ftgroup> <10DD5659-8B99-42A4-9B1D-18439CF0C832@rob.sh>, <26290_1406039248_53CE74D0_26290_10984_1_9E32478DFA9976438E7A22F69B08FF92044175@OPEXCLILM34.corporate.adroot.infra.ftgroup> In-Reply-To: <26290_1406039248_53CE74D0_26290_10984_1_9E32478DFA9976438E7A22F69B08FF92044175@OPEXCLILM34.corporate.adroot.infra.ftgroup> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.47.155.44] Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/I0y-q923Z-RHiLDkSoG44EM8m-4 Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Jul 2014 14:39:15 -0000 SSBwZXJzb25hbGx5IGRvbid0IGJlbGlldmUgdGhlcmUgaXMgYW55IHBvc3NpYmlsaXR5IG9mIG1h a2luZyB0aGF0IHJlY29tbWVuZGF0aW9uIGF0IHByZXNlbnQgc2luY2UgZWFjaCBvcHRpb24gaXMg b25seSBhcHBsaWNhbGJlIGluIGEgY2VydGFpbiBjb25kaXRpb24uIA0KDQpCZXN0IHJlZ2FyZHMs DQpYaWFvaHUNCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18NCreivP7I yzogc3ByaW5nIFtzcHJpbmctYm91bmNlc0BpZXRmLm9yZ10gtPqx7SBzdGVwaGFuZS5saXRrb3dz a2lAb3JhbmdlLmNvbSBbc3RlcGhhbmUubGl0a293c2tpQG9yYW5nZS5jb21dDQq3osvNyrG85Dog 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X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C1F801B2955; Tue, 22 Jul 2014 07:51:54 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 0.551 X-Spam-Level: X-Spam-Status: No, score=0.551 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, FREEMAIL_FROM=0.001, MIME_CHARSET_FARAWAY=2.45, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 1LTnTKSjrfrP; Tue, 22 Jul 2014 07:51:45 -0700 (PDT) Received: from relais-inet.francetelecom.com (relais-ias91.francetelecom.com [193.251.215.91]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 284291B293A; Tue, 22 Jul 2014 07:51:42 -0700 (PDT) Received: from omfedm05.si.francetelecom.fr (unknown [xx.xx.xx.1]) by omfedm12.si.francetelecom.fr (ESMTP service) with ESMTP id D6F8D18C19C; Tue, 22 Jul 2014 16:51:40 +0200 (CEST) Received: from Exchangemail-eme2.itn.ftgroup (unknown [10.114.31.56]) by omfedm05.si.francetelecom.fr (ESMTP service) with ESMTP id 7CD3335C076; Tue, 22 Jul 2014 16:51:40 +0200 (CEST) Received: from OPEXCLILM34.corporate.adroot.infra.ftgroup ([169.254.4.77]) by OPEXCLILH04.corporate.adroot.infra.ftgroup ([10.114.31.56]) with mapi id 14.03.0181.006; Tue, 22 Jul 2014 16:51:40 +0200 From: To: Xuxiaohu , Rob Shakir Thread-Topic: [spring] SPRING MPLS and Entropy Label Thread-Index: AQHPpPGzFOMOyOFpYEWM2i7SQsHvQpurYA2ggAClVgCAACK8cP//4dUAgAAk5RA= Date: Tue, 22 Jul 2014 14:51:39 +0000 Message-ID: <26288_1406040700_53CE7A7C_26288_2992_3_9E32478DFA9976438E7A22F69B08FF920441CB@OPEXCLILM34.corporate.adroot.infra.ftgroup> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <25011_1405997557_53CDD1F5_25011_16883_1_9E32478DFA9976438E7A22F69B08FF92043E06@OPEXCLILM34.corporate.adroot.infra.ftgroup> <10DD5659-8B99-42A4-9B1D-18439CF0C832@rob.sh>, <26290_1406039248_53CE74D0_26290_10984_1_9E32478DFA9976438E7A22F69B08FF92044175@OPEXCLILM34.corporate.adroot.infra.ftgroup> <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08295FC3@NKGEML512-MBS.china.huawei.com> In-Reply-To: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08295FC3@NKGEML512-MBS.china.huawei.com> Accept-Language: fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.168.234.1] Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-PMX-Version: 6.0.3.2322014, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2014.7.22.100920 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/CcXRJSum7oGafo9PNQgRAGpLLJ8 Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Jul 2014 14:51:54 -0000 U28gbGV0J3MgZmluZCB0aGUgYmVzdCBjb21wcm9taXNlIC4uLiBidXQgd2UgY2FuJ3Qgc3RheSBz dHVjayAuLi4NCg0KDQotLS0tLU9yaWdpbmFsIE1lc3NhZ2UtLS0tLQ0KRnJvbTogWHV4aWFvaHUg W21haWx0bzp4dXhpYW9odUBodWF3ZWkuY29tXSANClNlbnQ6IFR1ZXNkYXksIEp1bHkgMjIsIDIw MTQgMTA6MzkNClRvOiBMSVRLT1dTS0kgU3RlcGhhbmUgU0NFL0lCTkY7IFJvYiBTaGFraXINCkNj OiBtcGxzQGlldGYub3JnOyBzcHJpbmdAaWV0Zi5vcmc7IGRyYWZ0LWtpbmktbXBscy1zcHJpbmct ZW50cm9weS1sYWJlbEB0b29scy5pZXRmLm9yZw0KU3ViamVjdDogUmU6IFtzcHJpbmddIFNQUklO RyBNUExTIGFuZCBFbnRyb3B5IExhYmVsDQoNCkkgcGVyc29uYWxseSBkb24ndCBiZWxpZXZlIHRo ZXJlIGlzIGFueSBwb3NzaWJpbGl0eSBvZiBtYWtpbmcgdGhhdCByZWNvbW1lbmRhdGlvbiBhdCBw cmVzZW50IHNpbmNlIGVhY2ggb3B0aW9uIGlzIG9ubHkgYXBwbGljYWxiZSBpbiBhIGNlcnRhaW4g 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cmNpLgoKVGhpcyBtZXNzYWdlIGFuZCBpdHMgYXR0YWNobWVudHMgbWF5IGNvbnRhaW4gY29uZmlk ZW50aWFsIG9yIHByaXZpbGVnZWQgaW5mb3JtYXRpb24gdGhhdCBtYXkgYmUgcHJvdGVjdGVkIGJ5 IGxhdzsKdGhleSBzaG91bGQgbm90IGJlIGRpc3RyaWJ1dGVkLCB1c2VkIG9yIGNvcGllZCB3aXRo b3V0IGF1dGhvcmlzYXRpb24uCklmIHlvdSBoYXZlIHJlY2VpdmVkIHRoaXMgZW1haWwgaW4gZXJy b3IsIHBsZWFzZSBub3RpZnkgdGhlIHNlbmRlciBhbmQgZGVsZXRlIHRoaXMgbWVzc2FnZSBhbmQg aXRzIGF0dGFjaG1lbnRzLgpBcyBlbWFpbHMgbWF5IGJlIGFsdGVyZWQsIE9yYW5nZSBpcyBub3Qg bGlhYmxlIGZvciBtZXNzYWdlcyB0aGF0IGhhdmUgYmVlbiBtb2RpZmllZCwgY2hhbmdlZCBvciBm YWxzaWZpZWQuClRoYW5rIHlvdS4KCg== From nobody Tue Jul 22 08:05:35 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D8F9F1B288C; Tue, 22 Jul 2014 08:05:21 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.752 X-Spam-Level: X-Spam-Status: No, score=-1.752 tagged_above=-999 required=5 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([169.254.8.48]) by nkgeml410-hub.china.huawei.com ([10.98.56.41]) with mapi id 14.03.0158.001; Tue, 22 Jul 2014 23:05:09 +0800 From: Xuxiaohu To: "stephane.litkowski@orange.com" , "Rob Shakir" Thread-Topic: [spring] SPRING MPLS and Entropy Label Thread-Index: AQHPpbkqcvy6UadNakKtgoaxQFrlmpusJ9pg//9/eYCAAIjjDw== Date: Tue, 22 Jul 2014 15:05:08 +0000 Message-ID: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08296047@NKGEML512-MBS.china.huawei.com> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <25011_1405997557_53CDD1F5_25011_16883_1_9E32478DFA9976438E7A22F69B08FF92043E06@OPEXCLILM34.corporate.adroot.infra.ftgroup> <10DD5659-8B99-42A4-9B1D-18439CF0C832@rob.sh>, <26290_1406039248_53CE74D0_26290_10984_1_9E32478DFA9976438E7A22F69B08FF92044175@OPEXCLILM34.corporate.adroot.infra.ftgroup> <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08295FC3@NKGEML512-MBS.china.huawei.com>, <26288_1406040700_53CE7A7C_26288_2992_3_9E32478DFA9976438E7A22F69B08FF920441CB@OPEXCLILM34.corporate.adroot.infra.ftgroup> In-Reply-To: <26288_1406040700_53CE7A7C_26288_2992_3_9E32478DFA9976438E7A22F69B08FF920441CB@OPEXCLILM34.corporate.adroot.infra.ftgroup> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.47.155.44] Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/-pYwgv6e8poypX6EtiqFX-Keu5M Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Jul 2014 15:05:22 -0000 SXQgbWFrZXMgbm8gc2Vuc2Ugb2YgbWFraW5nIHRoYXQgY29tcHJvbWlzZSwgSU1ITy4gSXQgc2Vl 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([2001:67c:370:168:7d81:63d9:9d6:709b]) by mx.google.com with ESMTPSA id ez1sm3618300wib.15.2014.07.22.08.09.52 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 22 Jul 2014 08:09:53 -0700 (PDT) Message-ID: <53CE7EBD.6080201@gmail.com> Date: Tue, 22 Jul 2014 11:09:49 -0400 From: Spencer Dawkins User-Agent: Mozilla/5.0 (X11; Linux i686; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: adrian@olddog.co.uk, mpls@ietf.org, tsvwg@ietf.org References: <0a5301cfa5ac$6825a810$3870f830$@olddog.co.uk> In-Reply-To: <0a5301cfa5ac$6825a810$3870f830$@olddog.co.uk> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/LGcRN4qxMnoV7FfCaAKDXdnyz2k Subject: Re: [mpls] [tsvwg] Progressing foo-over-UDP X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Jul 2014 15:10:17 -0000 On 07/22/2014 08:56 AM, Adrian Farrel wrote: > In London I took an action to write up suggested text for how to handle the > concerns of congestion and checksum in UDP-over-foo. > > I think we had some agreement of what was needed (look at the minutes of TSVWG - > or was it TSV Area? - from London). > > Of course, I have let you all down. I have about 75% of the necessary text for > MPLS-over-UDP (as a concrete example), but I am not complete. You don't need to > know my excuses. > > Attached below (so you can laugh at me) is the text I have so far. it is work in > progress, but since I am currently getting in the way, some of you might want to > take the pen (if no-one wants to, I will try to continue and complete this). Adrian, thank you for sending this. It's important (as we gather what seems to be an inexhaustible supply of foos to encapsulate with UDP), and David and Gorry were able to point to your e-mail during TSVWG this morning. Spencer > Cheers, > Adrian > > ================== > > x. Applicability and Deployment of MPLS-in-UDP > > It is helpful to categorise the type of networks in which this > solution might be deployed. That is, it is useful to look at the > type of network over which the UDP tunnel might run, and the type of > network that may be running MPLS. An understanding of these > categories will lead to the realization that deploying MPLS-in-UDP in > some environments is entirely safe, in other scenarios might cause > issues to the networks involved but is a local choice for the > operators of those networks, while in other situations the deployment > might be significantly harmful to other services or traffic outside > the responsibility of the operator deploying MPLS-in-UDP. > > In broad terms these deployment categories can be listed as follows: > > - Tunneling across the Internet > - Tunneling over a provider network in a customer/provider > relationship > - Tunneling in a client/server relationship owned by a single > operator > - Tunneling within a "flat" network > > The remainder of this section describes the deployment of MPLS-in-UDP > in these networks, and gives warnings, advice, and caveats > appropriate to those scenarios with special reference to congestion > avoidance and the use of checksums. The use made of MPLS-in-UDP by > applications must be cognisant of the underlying network deployment. > However, it needs to be understood that an end-point application is > generally unaware of the services or connectivity over which it is > sending data. That is, an end-point application is sending IP data > possibly using TCP or UDP, and that data is encapsulated in MPLS > somewhere within the network, and then those MPLS packets are > themselves encapsulated in UDP as described in this document. That > means that the decision points for the concerns and choices described > in the sections that follow are at the point of encapsulation of MPLS > in UDP, and at the time of deployment of the encapsulation function. > While there are possibilities to apply back-pressure to applications, > when there is tunneling within tunnels and a significant amount of > multiplexing of flows within flows (as is the case with MPLS-in-UDP) > these techniques are hard to apply and may have less immediate > effect. > > Implementers are advised to note that widely deployable > implementations have to provide the function set that is needed in > each of the deployment scenarios discussed below. That is, those > implementations that only provide a subset of the functionality are > not suitable for deployment in the full set of scenarios. > > The text in these sections is not intended to be, and should not be > taken as, broader guidance for the issues of tunneling different > protocols over UDP. > > x.1. Congestion Considerations > > End-to-end traffic flows may be multiplexed into MPLS LSPs, and those > LSPs may be multiplexed into a single UDP tunnel. These UDP tunnels > appear as single flows in the core IP network over which the tunnel > flows. Thus, any congestion issues related to the core network and > caused by end-to-end traffic flows may be hard to report back to the > head ends of the flows causing the congestion. > > The impact of congestion must be considered both in terms of the > effect on the rest of the network of a UDP tunnel that is consuming > excessive capacity, and in terms of the effect on the flows using the > UDP tunnels in particular if packets are queued (causing delay or > jitter) or dropped. > > Various mechanisms exist to propagate congestion information to the > source of flows either when congestion has occurred or when it is > perceived to be imminent. It should be noted that in the case of a > tunnel (such as a UDP tunnel), the source of a flow is the head end > of the tunnel. That is, any congestion notification from the core > network will be propagated to the head end of the tunnel, not to the > original source of the traffic. > > The head end of a UDP tunnel can take a number of actions when it is > informed about congestion. No comment is made here about which > action is best or even appropriate, but section x.3 discusses these > actions in the context of the different deployment scenarios. > > - Do nothing assuming that the burden of congestion will be carried > by other flows, or that the fact of congestion on the UDP tunnel > will cause back-pressure in the payload flows. > > - Pass on the congestion information to the payload flows. However, > in this instance the payload of the UDP tunnel is MPLS flows, and > the mechanisms for congestion notification in MPLS flows are > lacking. > > - Throttle the data being placed onto the UDP tunnel by queuing or > dropping packets from the payload flows. > > - Change the flows that are in a tunnel by putting some of them in a > different tunnel. This may have no effect on the congestion, but > in some networks with ECMP may result in an improvement. > > - Completely fail one or more flows carried in the tunnel, or even > fail the entire tunnel. This mechanism is sometimes known as > "circuit breaker". > > x.2. UDP Checksum Considerations > > is checksum an issue > what can be done about it > > - use it or not > > x.3. Deployment Scenarios > > x.3.1. MPLS-in-UDP over the Public Internet > > > - Tunneling across the Internet > The use of MPLS-in-UDP over the public Internet is NOT RECOMMENDED. > > x.3.2. MPLS-in-UDP in Managed Networks > > - Tunneling over a provider network in a customer/provider > relationship > - Tunneling in a client/server relationship owned by a single > operator > > x.3.3. MPLS-in-UDP in Private Networks > > - Tunneling in a client/server relationship owned by a single > operator > - Tunneling within a "flat" network > From nobody Tue Jul 22 08:20:17 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7D3471B297B; Tue, 22 Jul 2014 08:20:16 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id UCYz-iE2Pr1X; Tue, 22 Jul 2014 08:20:13 -0700 (PDT) Received: from cappuccino.rob.sh (cappuccino.rob.sh [IPv6:2a03:9800:10:4c::cafe:b00c]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 636D31B2949; Tue, 22 Jul 2014 08:20:10 -0700 (PDT) Received: from [31.133.179.3] (helo=dhcp-b303.meeting.ietf.org) by cappuccino.rob.sh with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1X9brL-0002fI-2I; Tue, 22 Jul 2014 16:20:07 +0100 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Content-Type: text/plain; charset=gb18030 From: Rob Shakir In-Reply-To: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08296047@NKGEML512-MBS.china.huawei.com> Date: Tue, 22 Jul 2014 11:20:02 -0400 Content-Transfer-Encoding: quoted-printable Message-Id: References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <25011_1405997557_53CDD1F5_25011_16883_1_9E32478DFA9976438E7A22F69B08FF92043E06@OPEXCLILM34.corporate.adroot.infra.ftgroup> <10DD5659-8B99-42A4-9B1D-18439CF0C832@rob.sh>, <26290_1406039248_53CE74D0_26290_10984_1_9E32478DFA9976438E7A22F69B08FF92044175@OPEXCLILM34.corporate.adroot.infra.ftgroup> <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08295FC3@NKGEML512-MBS.china.huawei.com>, <26288_1406040700_53CE7A7C_26288_2992_3_9E32478DFA9976438E7A22F69B08FF920441CB@OPEXCLILM34.corporate.adroot.infra.ftgroup> <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08296047@NKGEML512-MBS.china.huawei.com> To: Xuxiaohu X-Mailer: Apple Mail (2.1878.6) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/SdMnltf0PMDCPgmdtlX-lSp2_ME Cc: "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" , "mpls@ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Jul 2014 15:20:16 -0000 On 22 Jul 2014, at 11:05, Xuxiaohu wrote: > It makes no sense of making that compromise, IMHO. It seems that the = most feasible way is to allow operators themselves to make the choice = among these options according to their network conditions. Such a recommendation does not have to say that this is the ONLY = solution that can be used. However, it is very likely that a number of = operators have a common set of limitations (given that we know there are = commonalities in deployed h/w). IMVHO, the thing that we should avoid is = that e.g., Stephane asks to support solution 1, and I ask for support = for solution 2 =A1=AA such that (as a community) we end up needing to = support 1 && 2, when maybe we could have reached some comment = recommendation such that there was only need for support for 1 || 2. Let=A1=AFs wait and hear from the authors of the draft whether they = intend to put forward some recommendation. If they do not, and rather it = should be an operator=A1=AFs choice, perhaps then the numerous operators = that are involved in the SR/MPLS can instead try and make such a = recommendation if we see that there is value in it. However, as Stephane = pointed out, this is not a decision that can be made in isolation from = those that build h/w. r.= From nobody Tue Jul 22 08:28:08 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7F0111B297A; Tue, 22 Jul 2014 08:28:06 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 0.551 X-Spam-Level: X-Spam-Status: No, score=0.551 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, FREEMAIL_FROM=0.001, MIME_CHARSET_FARAWAY=2.45, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id J84--DYzKcb7; Tue, 22 Jul 2014 08:28:03 -0700 (PDT) Received: from relais-inet.francetelecom.com (relais-ias243.francetelecom.com [80.12.204.243]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 47A5E1B299C; Tue, 22 Jul 2014 08:28:02 -0700 (PDT) Received: from omfeda08.si.francetelecom.fr (unknown [xx.xx.xx.201]) by omfeda10.si.francetelecom.fr (ESMTP service) with ESMTP id 816563741FE; Tue, 22 Jul 2014 17:28:00 +0200 (CEST) Received: from Exchangemail-eme2.itn.ftgroup (unknown [10.114.31.16]) by omfeda08.si.francetelecom.fr (ESMTP service) with ESMTP id 5FF7C38409A; Tue, 22 Jul 2014 17:28:00 +0200 (CEST) Received: from OPEXCLILM34.corporate.adroot.infra.ftgroup ([169.254.4.77]) by OPEXCLILH05.corporate.adroot.infra.ftgroup ([10.114.31.16]) with mapi id 14.03.0181.006; Tue, 22 Jul 2014 17:28:00 +0200 From: To: Xuxiaohu , Rob Shakir Thread-Topic: [spring] SPRING MPLS and Entropy Label Thread-Index: AQHPpPGzFOMOyOFpYEWM2i7SQsHvQpurYA2ggAClVgCAACK8cP//4dUAgAAk5RD//+JjAIAAJ4dA Date: Tue, 22 Jul 2014 15:27:59 +0000 Message-ID: <32399_1406042880_53CE8300_32399_4850_1_9E32478DFA9976438E7A22F69B08FF9204426C@OPEXCLILM34.corporate.adroot.infra.ftgroup> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <25011_1405997557_53CDD1F5_25011_16883_1_9E32478DFA9976438E7A22F69B08FF92043E06@OPEXCLILM34.corporate.adroot.infra.ftgroup> <10DD5659-8B99-42A4-9B1D-18439CF0C832@rob.sh>, <26290_1406039248_53CE74D0_26290_10984_1_9E32478DFA9976438E7A22F69B08FF92044175@OPEXCLILM34.corporate.adroot.infra.ftgroup> <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08295FC3@NKGEML512-MBS.china.huawei.com>, <26288_1406040700_53CE7A7C_26288_2992_3_9E32478DFA9976438E7A22F69B08FF920441CB@OPEXCLILM34.corporate.adroot.infra.ftgroup> <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08296047@NKGEML512-MBS.china.huawei.com> In-Reply-To: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08296047@NKGEML512-MBS.china.huawei.com> Accept-Language: fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.168.234.1] Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-PMX-Version: 6.0.3.2322014, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2014.7.22.141219 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/qp2tntpK9Mwsk4LeDt-RdPiaR3c Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Jul 2014 15:28:06 -0000 SGF2aW5nIG11bHRpcGxlIGltcGxlbWVudGF0aW9ucyBtYWtlcyBubyBzZW5zZSB0byBtZSA6DQot IGNvbXBsZXggdG8gdW5kZXJzdGFuZCBpbiBvcGVyYXRpb25zDQotICBpbnRlcm9wIHRvIGhhbmRs ZQ0KLSB2ZW5kb3JzIHdpbGwgbm90IGltcGxlbWVudCBhbGwgdGhlIG9wdGlvbnMsIGFzIHNvbWUg aGF2ZSBIVyBkZXZlbG9wbWVudCBuZWVkcy4NCg0KDQotLS0tLU9yaWdpbmFsIE1lc3NhZ2UtLS0t 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From: Robert Raszuk To: Xuxiaohu , "sfc@ietf.org" Content-Type: multipart/alternative; boundary=089e0112c39c647f9c04fe72ae95 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/_bw9moQgsrz9NwxXGzgolvKOAi0 X-Mailman-Approved-At: Tue, 22 Jul 2014 10:12:10 -0700 Cc: "mpls@ietf.org" , "" Subject: Re: [mpls] [spring] How to carry metadata/context in an MPLS packet X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Jul 2014 07:26:55 -0000 --089e0112c39c647f9c04fe72ae95 Content-Type: text/plain; charset=UTF-8 All, Is the idea of using data plane to carry complete metadata is "the way" or "a way" of approaching the problem ? Has this been already discussed ? I would rather consider to carry metadata in control plane and only attach a reference_id (and only when it is needed) to the data plane. Rgs, R. On Fri, Jul 18, 2014 at 3:58 AM, Xuxiaohu wrote: > Hi all, > > I'm now considering how to carry metadata/context in an MPLS packet. I > just noticed that draft-guichard-mpls-metadata-00 ( > http://tools.ietf.org/html/draft-guichard-mpls-metadata-00#page-6) > proposes a way to carry metadata/context in an MPLS packet (see below): > > "3. Metadata Channel Header Format > > The presence of metadata within an MPLS packet must be indicated in > the encapsulation. This document defines that the G-ACh Generic > Associated Channel Label (GAL) [RFC5586] with label value 13 is > utilized for this purpose. The GAL label provides a method to > identify that a packet contains an "Associated Channel Header (ACH)" > followed by a non-service payload. > > [RFC5586] identifies the G-ACh Generic Associated Channel by setting > the first nibble of the ACH that immediately follows the bottom label > in the stack if the GAL label is present, to 0001b. Further > [RFC5586] expects that the ACH not be used to carry user data > traffic. This document proposes an extension to allow the first > nibble of the ACH to be set to 0000b and, when following the GAL, be > interpreted using the semantics defined in > [I-D.guichard-metadata-header] to allow metadata to be carried > through the G-ACh channel." > > However, it seems that the special usage of the GAL as mentioned above > still conflicts with the following statement quoted from [RFC5586]: > > " The GAL MUST NOT appear in the label stack when transporting normal > user-plane packets. Furthermore, when present, the GAL MUST NOT > appear more than once in the label stack." > > I wonder whether the special usage of the GAL as proposed in the above > draft would result in any backward compatibility issue. In addition, I > wonder whether it's worthwhile to reconsider the possibility of introducing > a Protocol Type (PT) field immediately after the bottom of the MPLS label > stack. With such PT field, any kind of future MPLS payload (e.g., metadata > header or NSH) can be easily identified. > > Best regards, > Xiaohu > > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring > --089e0112c39c647f9c04fe72ae95 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
All,

Is the idea of using data plane to carry complete metadata is "the way= " or "a way" of approaching the problem ? Has this been alre= ady discussed ?

I would rather consider to carry metadata in contro= l plane and only attach a reference_id (and only when it is needed) to the = data plane.=C2=A0

Rgs,
R.





On Fri, Jul 18, 2014 at 3:58 AM, Xuxiaohu <xuxiaohu@huawei.com&g= t; wrote:
Hi all,

I'm now considering how to carry metadata/context in an MPLS packet. I = just noticed that draft-guichard-mpls-metadata-00 (htt= p://tools.ietf.org/html/draft-guichard-mpls-metadata-00#page-6) propose= s a way to carry metadata/context in an MPLS packet (see below):

"3. =C2=A0Metadata Channel Header Format

=C2=A0 =C2=A0The presence of metadata within an MPLS packet must be indicat= ed in
=C2=A0 =C2=A0the encapsulation. =C2=A0This document defines that the G-ACh = Generic
=C2=A0 =C2=A0Associated Channel Label (GAL) [RFC5586] with label value 13 i= s
=C2=A0 =C2=A0utilized for this purpose. =C2=A0The GAL label provides a meth= od to
=C2=A0 =C2=A0identify that a packet contains an "Associated Channel He= ader (ACH)"
=C2=A0 =C2=A0followed by a non-service payload.

=C2=A0 =C2=A0[RFC5586] identifies the G-ACh Generic Associated Channel by s= etting
=C2=A0 =C2=A0the first nibble of the ACH that immediately follows the botto= m label
=C2=A0 =C2=A0in the stack if the GAL label is present, to 0001b. =C2=A0Furt= her
=C2=A0 =C2=A0[RFC5586] expects that the ACH not be used to carry user data<= br> =C2=A0 =C2=A0traffic. =C2=A0This document proposes an extension to allow th= e first
=C2=A0 =C2=A0nibble of the ACH to be set to 0000b and, when following the G= AL, be
=C2=A0 =C2=A0interpreted using the semantics defined in
=C2=A0 =C2=A0[I-D.guichard-metadata-header] to allow metadata to be carried=
=C2=A0 =C2=A0through the G-ACh channel."

However, it seems that the special usage of the GAL as mentioned above stil= l conflicts with the following statement quoted from [RFC5586]:

" =C2=A0The GAL MUST NOT appear in the label stack when transporting n= ormal
=C2=A0 =C2=A0user-plane packets. =C2=A0Furthermore, when present, the GAL M= UST NOT
=C2=A0 =C2=A0appear more than once in the label stack."

I wonder whether the special usage of the GAL as proposed in the above draf= t would result in any backward compatibility issue. In addition, I wonder w= hether it's worthwhile to reconsider the possibility of introducing a P= rotocol Type (PT) field immediately after the bottom of the MPLS label stac= k. With such PT field, any kind of future MPLS payload (e.g., metadata head= er or NSH) can be easily identified.

Best regards,
Xiaohu

_______________________________________________
spring mailing list
spring@ietf.org
= https://www.ietf.org/mailman/listinfo/spring

--089e0112c39c647f9c04fe72ae95-- From nobody Tue Jul 22 10:12:14 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id AF8671A0A9C; Fri, 18 Jul 2014 00:55:34 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.277 X-Spam-Level: X-Spam-Status: No, score=-1.277 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FM_FORGED_GMAIL=0.622, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id CZ-z_aVq8Pxe; Fri, 18 Jul 2014 00:55:29 -0700 (PDT) Received: from mail-ig0-x230.google.com (mail-ig0-x230.google.com [IPv6:2607:f8b0:4001:c05::230]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3DBE71A04B0; Fri, 18 Jul 2014 00:55:29 -0700 (PDT) Received: by mail-ig0-f176.google.com with SMTP id hn18so319351igb.3 for ; Fri, 18 Jul 2014 00:55:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=T2lFwYDmBtM8+2GnMLlSibOQnppEj96MkjPN+a1CPFI=; b=SxTGhQcPMeuE7o1JX6lyu98aMgzT0iD6Q8X86UvvEdhBwz643bZ8bSoo3j9XsdAQ5k QVMuK8TfvxZVhwrTDpT8DmBzIieolDz/arykbFNzc2T+pJBUzI4qX4aSBJuU5b37Hxe0 BtpCh8UIYU56tz2RjEo0zCVnWgnxFQl+eA+8QQHjMXeBzpMPuM+S5SsJVaeKxSup80Qt 05JUt+vGGJv3KZs3CD/Cs5ubjUQNcuzAbIUB/bnzKmRDDfIoe7Cgubm1vW+lAFhXxLRn X42PCzaGqiekdbE43W4WbmF1KFDWi+7Xgm6MLeOqx5fJ2+1B8wVm2YKKsprsEDG7OKA8 VhgQ== MIME-Version: 1.0 X-Received: by 10.50.79.135 with SMTP id j7mr6110768igx.9.1405670128377; Fri, 18 Jul 2014 00:55:28 -0700 (PDT) Sender: rraszuk@gmail.com Received: by 10.64.89.38 with HTTP; Fri, 18 Jul 2014 00:55:28 -0700 (PDT) In-Reply-To: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE082941FE@NKGEML512-MBS.china.huawei.com> References: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08294118@NKGEML512-MBS.china.huawei.com> <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE082941FE@NKGEML512-MBS.china.huawei.com> Date: Fri, 18 Jul 2014 09:55:28 +0200 X-Google-Sender-Auth: TjbOLNw2LsOYkKzlqAbWOPnETgg Message-ID: From: Robert Raszuk To: Xuxiaohu Content-Type: multipart/alternative; boundary=089e0122a754ac645804fe7314bf Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/uYVI4dSQQfqxSvGTTaiq6YjGz50 X-Mailman-Approved-At: Tue, 22 Jul 2014 10:12:11 -0700 Cc: "mpls@ietf.org" , "" , "sfc@ietf.org" Subject: Re: [mpls] [spring] How to carry metadata/context in an MPLS packet X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Jul 2014 07:55:34 -0000 --089e0122a754ac645804fe7314bf Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Xu, Yes indeed I do consider proposal from Bruno and Jerome as exact match to what I had in mind with their "correlator" to mine "reference_id". Just terminology nit. Except it is not section 3.3 but 3.5 ... "3.5. Hybrid in-band marking and out-of-band signaling Metadata can be signaled using a hybrid approach combining in-band marking and out-of-band signaling. Each data packet can carry a small fixed-length field which serves as a "correlator". An out-of-band signaling protocol can then be used to map the correlator value to the actual metadata value(s)." > If that =E2=80=9Creference_id=E2=80=9D is attached to the MPLS > packet, it seems that you still need some way to > indicate the presence of that =E2=80=9Creference_id=E2=80=9D in > the MPLS packet. I am not sure we need yet another point solution indicator. We already have two general purpose mechanism which seems like possible indicators which could be used here: * RFC 5331 - MPLS Upstream Label Assignment and Context-Specific Label Spac= e * RFC 7274 - Allocating and Retiring Special-Purpose MPLS Labels Rgs, r. On Fri, Jul 18, 2014 at 9:43 AM, Xuxiaohu wrote: > Hi Robert, > > > > It seems that the concept of =E2=80=9Creference_id=E2=80=9D looks much si= milar with the > concept of =E2=80=9Ccorrelator=E2=80=9D as defined in section 3.3 of ( > http://tools.ietf.org/html/draft-rijsman-sfc-metadata-considerations-00#p= age-8). > That=E2=80=99s the context ID of the metadata I meant. > > > > If that =E2=80=9Creference_id=E2=80=9D is attached to the MPLS packet, i= t seems that you > still need some way to indicate the presence of that =E2=80=9Creference_i= d=E2=80=9D in the > MPLS packet. > > > > Best regards, > > Xiaohu > > > > *From:* rraszuk@gmail.com [mailto:rraszuk@gmail.com] *On Behalf Of *Rober= t > Raszuk > *Sent:* Friday, July 18, 2014 3:27 PM > *To:* Xuxiaohu; sfc@ietf.org > *Cc:* mpls@ietf.org; > *Subject:* Re: [spring] How to carry metadata/context in an MPLS packet > > > > All, > > > > Is the idea of using data plane to carry complete metadata is "the way" o= r > "a way" of approaching the problem ? Has this been already discussed ? > > > > I would rather consider to carry metadata in control plane and only attac= h > a reference_id (and only when it is needed) to the data plane. > > > > Rgs, > > R. > > > > > > > > > > On Fri, Jul 18, 2014 at 3:58 AM, Xuxiaohu wrote: > > Hi all, > > I'm now considering how to carry metadata/context in an MPLS packet. I > just noticed that draft-guichard-mpls-metadata-00 ( > http://tools.ietf.org/html/draft-guichard-mpls-metadata-00#page-6) > proposes a way to carry metadata/context in an MPLS packet (see below): > > "3. Metadata Channel Header Format > > The presence of metadata within an MPLS packet must be indicated in > the encapsulation. This document defines that the G-ACh Generic > Associated Channel Label (GAL) [RFC5586] with label value 13 is > utilized for this purpose. The GAL label provides a method to > identify that a packet contains an "Associated Channel Header (ACH)" > followed by a non-service payload. > > [RFC5586] identifies the G-ACh Generic Associated Channel by setting > the first nibble of the ACH that immediately follows the bottom label > in the stack if the GAL label is present, to 0001b. Further > [RFC5586] expects that the ACH not be used to carry user data > traffic. This document proposes an extension to allow the first > nibble of the ACH to be set to 0000b and, when following the GAL, be > interpreted using the semantics defined in > [I-D.guichard-metadata-header] to allow metadata to be carried > through the G-ACh channel." > > However, it seems that the special usage of the GAL as mentioned above > still conflicts with the following statement quoted from [RFC5586]: > > " The GAL MUST NOT appear in the label stack when transporting normal > user-plane packets. Furthermore, when present, the GAL MUST NOT > appear more than once in the label stack." > > I wonder whether the special usage of the GAL as proposed in the above > draft would result in any backward compatibility issue. In addition, I > wonder whether it's worthwhile to reconsider the possibility of introduci= ng > a Protocol Type (PT) field immediately after the bottom of the MPLS label > stack. With such PT field, any kind of future MPLS payload (e.g., metadat= a > header or NSH) can be easily identified. > > Best regards, > Xiaohu > > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring > > > --089e0122a754ac645804fe7314bf Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi Xu,
Yes indeed I do consider proposal from Bruno and Je= rome as exact match to what I had in mind with their "correlator"= to mine "reference_id". Just terminology nit.=C2=A0

Except it is not = section 3.3 but 3.5 ...

"3.5. H= ybrid in-band marking and out-of-band signaling
Metadata can be signaled using a hybrid approach combining in-= band=C2= =A0marking and out-of-band signaling.
Each data packet can carry a small fixed-length field which se= rves=C2=A0= =C2=A0used to map the correlator value to the actual metadata value(s).&quo= t;


> If that =C2=A0=E2=80=9Creference= _id=E2=80=9D is attached to the MPLS=C2=A0
> packet, it seems = that you still need some way to=C2=A0
&g= t; indicate the presence of that =E2=80=9Creference_id=E2=80=9D in=C2=A0
> the=C2=A0MPLS packet.

I am not sure we need yet another point = solution indicator.=C2=A0
We already have two general purpose mechanism which seems like= possible indicators which could be used here:
* RFC 5331 -=C2=A0MPLS Upstream Label Assignment and Context-S= pecific Label Space
* RFC 7274 - Allocating and Retiring Special-Purpose MPLS Labe= ls

Rgs,
r.

=

On Fri, Jul 18, 2014 at 9:43 AM, Xuxiaoh= u <xuxiaohu@huawei.com> wrote:

Hi Robert,=

=C2= =A0

It seems t= hat the concept of =E2=80=9Creference_id=E2=80=9D looks much similar with t= he concept of =E2=80=9Ccorrelator=E2=80=9D as defined in section 3.3 of (http://tools.ietf.org/html/draft-rijsman-sf= c-metadata-considerations-00#page-8). That=E2=80=99s the context ID of the metadata I meant.

=C2= =A0

If that = =C2=A0=E2=80=9Creference_id=E2=80=9D is attached to the MPLS packet, it see= ms that you still need some way to indicate the presence of that =E2=80=9Cr= eference_id=E2=80=9D in the MPLS packet.

=C2= =A0

Best regar= ds,

Xiaohu<= /u>

=C2= =A0

From: rraszuk@gmail.com [mailto:rraszuk@gmail.com] On Behalf Of Robert Raszuk
Sent: Friday, July 18, 2014 3:27 PM
To: Xuxiaohu; sfc@= ietf.org
Cc: mpls@ietf.org= ; <spring@ietf.= org>
Subject: Re: [spring] How to carry metadata/context in an MPLS packe= t

=C2=A0

All,

=C2=A0

Is the idea of using data plane to carry complete metadata i= s "the way" or "a way" of approaching the problem ? Has= this been already discussed ?

=C2=A0

I would rather consider to carry metadata in control plane a= nd only attach a reference_id (and only when it is needed) to the data plan= e.=C2=A0

=C2=A0

Rgs,

R.

=C2=A0

=C2=A0

=C2=A0

= =C2=A0

On Fri, Jul 18, 2014 at 3:58 AM= , Xuxiaohu <xux= iaohu@huawei.com> wrote:

Hi all,

I'm now considering how to carry metadata/context in an MPLS packet. I = just noticed that draft-guichard-mpls-metadata-00 (htt= p://tools.ietf.org/html/draft-guichard-mpls-metadata-00#page-6) proposes a way to carry metadata/context in an MPLS packet (see below):
"3. =C2=A0Metadata Channel Header Format

=C2=A0 =C2=A0The presence of metadata within an MPLS packet must be indicat= ed in
=C2=A0 =C2=A0the encapsulation. =C2=A0This document defines that the G-ACh = Generic
=C2=A0 =C2=A0Associated Channel Label (GAL) [RFC5586] with label value 13 i= s
=C2=A0 =C2=A0utilized for this purpose. =C2=A0The GAL label provides a meth= od to
=C2=A0 =C2=A0identify that a packet contains an "Associated Channel He= ader (ACH)"
=C2=A0 =C2=A0followed by a non-service payload.

=C2=A0 =C2=A0[RFC5586] identifies the G-ACh Generic Associated Channel by s= etting
=C2=A0 =C2=A0the first nibble of the ACH that immediately follows the botto= m label
=C2=A0 =C2=A0in the stack if the GAL label is present, to 0001b. =C2=A0Furt= her
=C2=A0 =C2=A0[RFC5586] expects that the ACH not be used to carry user data<= br> =C2=A0 =C2=A0traffic. =C2=A0This document proposes an extension to allow th= e first
=C2=A0 =C2=A0nibble of the ACH to be set to 0000b and, when following the G= AL, be
=C2=A0 =C2=A0interpreted using the semantics defined in
=C2=A0 =C2=A0[I-D.guichard-metadata-header] to allow metadata to be carried=
=C2=A0 =C2=A0through the G-ACh channel."

However, it seems that the special usage of the GAL as mentioned above stil= l conflicts with the following statement quoted from [RFC5586]:

" =C2=A0The GAL MUST NOT appear in the label stack when transporting n= ormal
=C2=A0 =C2=A0user-plane packets. =C2=A0Furthermore, when present, the GAL M= UST NOT
=C2=A0 =C2=A0appear more than once in the label stack."

I wonder whether the special usage of the GAL as proposed in the above draf= t would result in any backward compatibility issue. In addition, I wonder w= hether it's worthwhile to reconsider the possibility of introducing a P= rotocol Type (PT) field immediately after the bottom of the MPLS label stack. With such PT field, any kind of = future MPLS payload (e.g., metadata header or NSH) can be easily identified= .

Best regards,
Xiaohu

_______________________________________________
spring mailing list
spring@ietf.org = https://www.ietf.org/mailman/listinfo/spring

=C2=A0


--089e0122a754ac645804fe7314bf-- From nobody Tue Jul 22 10:12:16 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 58A361A02AC; Fri, 18 Jul 2014 03:32:02 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.277 X-Spam-Level: X-Spam-Status: No, score=-1.277 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FM_FORGED_GMAIL=0.622, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3qKpH3Ry7bMr; Fri, 18 Jul 2014 03:32:00 -0700 (PDT) Received: from mail-ig0-x232.google.com (mail-ig0-x232.google.com [IPv6:2607:f8b0:4001:c05::232]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 39DED1A015B; Fri, 18 Jul 2014 03:32:00 -0700 (PDT) Received: by mail-ig0-f178.google.com with SMTP id uq10so437038igb.11 for ; Fri, 18 Jul 2014 03:31:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=Wg8hM8zV2Lt1xr3k3QA0ORZp6KMOD4WVf7lMt5EkJRs=; b=CfVhg/jDs8r6KT/R8boqMLc8xey2jMejneELhOsteTc0vfqibmpsFii/zfVA8ypFYv 7MOuQoFkXrfyO04+nuEHf25TzLlPAx+d3mHmgGEx0eXLbJWtlAkRI/z2fEM/Kw8D4vVL qh/Ex3bV6Rxfq6r9SPieReudNRY439chcDwpshz9vbbVReOpcB3DeFv8fRtyXUv4NG+P 4Z2vSPjrKCkP30naj7VwyqEBPJnnYt5bpA9mU3U2r76mo66sTHhvg6tfZ/cnRq1j8WAn 2wJH9doSD/UMc71FZ2PE1+J1hxwiVdXaEXojzdStfr1olnhO8TyNymlcu6C9IwSmRIgK 3HcA== MIME-Version: 1.0 X-Received: by 10.50.114.194 with SMTP id ji2mr7301657igb.21.1405679519463; Fri, 18 Jul 2014 03:31:59 -0700 (PDT) Sender: rraszuk@gmail.com Received: by 10.64.89.38 with HTTP; Fri, 18 Jul 2014 03:31:59 -0700 (PDT) Received: by 10.64.89.38 with HTTP; Fri, 18 Jul 2014 03:31:59 -0700 (PDT) In-Reply-To: <1405653745773.33083@surrey.ac.uk> References: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08294118@NKGEML512-MBS.china.huawei.com> <1405653056176.39234@surrey.ac.uk> <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08294173@NKGEML512-MBS.china.huawei.com> <1405653745773.33083@surrey.ac.uk> Date: Fri, 18 Jul 2014 12:31:59 +0200 X-Google-Sender-Auth: 6-Ta-eolvAUYzakfS_e3j1eUdoA Message-ID: From: Robert Raszuk To: l.wood@surrey.ac.uk Content-Type: multipart/alternative; boundary=089e013a0c686d018504fe754460 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/xUhTaiL-K6JU8KE2IIAdwJHLpP8 X-Mailman-Approved-At: Tue, 22 Jul 2014 10:12:11 -0700 Cc: mpls@ietf.org, spring@ietf.org, sfc@ietf.org Subject: Re: [mpls] [sfc] How to carry metadata/context in an MPLS packet X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Jul 2014 10:32:02 -0000 --089e013a0c686d018504fe754460 Content-Type: text/plain; charset=UTF-8 Hi Lloyd, I think and I do hope that we see only mpls centric proposals as this is one encapsulation used in the networks. I hope other proposals will also address v6 encapsulations and that any encapsulation will use same metadata control plane. Best, R. On Jul 18, 2014 12:23 PM, wrote: > No, my "why" is "why have metadata in the MPLS header at all"? > > Why does this have to be done inband? > > I am questioning the basis for doing this. There is no "must" here. > > Lloyd Wood > http://about.me/lloydwood > ________________________________________ > From: Xuxiaohu > Sent: Friday, 18 July 2014 1:17 PM > To: Wood L Dr (Electronic Eng); mpls@ietf.org > Cc: spring@ietf.org; sfc@ietf.org > Subject: RE: How to carry metadata/context in an MPLS packet > > The presence of metadata within an MPLS packet must be indicated in the > encapsulation. I think that's the "why" you may want to know. > > Best regards, > Xiaohu > > > -----Original Message----- > > From: l.wood@surrey.ac.uk [mailto:l.wood@surrey.ac.uk] > > Sent: Friday, July 18, 2014 11:11 AM > > To: Xuxiaohu; mpls@ietf.org > > Cc: spring@ietf.org; sfc@ietf.org > > Subject: RE: How to carry metadata/context in an MPLS packet > > > > How? A better question is "why?" > > > > What has to be done in MPLS that cannot be done outside it? > > > > Lloyd Wood > > http://about.me/lloydwood > > ________________________________________ > > From: mpls on behalf of Xuxiaohu > > > > Sent: Friday, 18 July 2014 11:58 AM > > To: mpls@ietf.org > > Cc: ; sfc@ietf.org > > Subject: [mpls] How to carry metadata/context in an MPLS packet > > > > Hi all, > > > > I'm now considering how to carry metadata/context in an MPLS packet. I > just > > noticed that draft-guichard-mpls-metadata-00 > > (http://tools.ietf.org/html/draft-guichard-mpls-metadata-00#page-6) > proposes > > a way to carry metadata/context in an MPLS packet (see below): > > > > "3. Metadata Channel Header Format > > > > The presence of metadata within an MPLS packet must be indicated in > > the encapsulation. This document defines that the G-ACh Generic > > Associated Channel Label (GAL) [RFC5586] with label value 13 is > > utilized for this purpose. The GAL label provides a method to > > identify that a packet contains an "Associated Channel Header (ACH)" > > followed by a non-service payload. > > > > [RFC5586] identifies the G-ACh Generic Associated Channel by setting > > the first nibble of the ACH that immediately follows the bottom label > > in the stack if the GAL label is present, to 0001b. Further > > [RFC5586] expects that the ACH not be used to carry user data > > traffic. This document proposes an extension to allow the first > > nibble of the ACH to be set to 0000b and, when following the GAL, be > > interpreted using the semantics defined in > > [I-D.guichard-metadata-header] to allow metadata to be carried > > through the G-ACh channel." > > > > However, it seems that the special usage of the GAL as mentioned above > still > > conflicts with the following statement quoted from [RFC5586]: > > > > " The GAL MUST NOT appear in the label stack when transporting normal > > user-plane packets. Furthermore, when present, the GAL MUST NOT > > appear more than once in the label stack." > > > > I wonder whether the special usage of the GAL as proposed in the above > draft > > would result in any backward compatibility issue. In addition, I wonder > whether > > it's worthwhile to reconsider the possibility of introducing a Protocol > Type (PT) > > field immediately after the bottom of the MPLS label stack. With such PT > field, > > any kind of future MPLS payload (e.g., metadata header or NSH) can be > easily > > identified. > > > > Best regards, > > Xiaohu > > > > _______________________________________________ > > mpls mailing list > > mpls@ietf.org > > https://www.ietf.org/mailman/listinfo/mpls > > _______________________________________________ > sfc mailing list > sfc@ietf.org > https://www.ietf.org/mailman/listinfo/sfc > --089e013a0c686d018504fe754460 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

Hi Lloyd,

I think and I do hope that we see only mpls centric proposal= s as this is one encapsulation used in the networks.

I hope other proposals will also address v6 encapsulations a= nd that any encapsulation will use same metadata control plane.

Best,
R.

On Jul 18, 2014 12:23 PM, <l.wood@surrey.ac.uk> wrote:
No, my "why" is "why have metadata in the MPLS header at all= "?

Why does this have to be done inband?

I am questioning the basis for doing this. There is no "must" her= e.

Lloyd Wood
http://about.me/llo= ydwood
________________________________________
From: Xuxiaohu <xuxiaohu@huawei.c= om>
Sent: Friday, 18 July 2014 1:17 PM
To: Wood L =C2=A0Dr (Electronic Eng); mpls= @ietf.org
Cc: spring@ietf.org; sfc@ietf.org
Subject: RE: How to carry metadata/context in an MPLS packet

The presence of metadata within an MPLS packet must be indicated in the enc= apsulation. I think that's the "why" you may want to know.
Best regards,
Xiaohu

> -----Original Message-----
> From: l.wood@surrey.ac.uk [= mailto:l.wood@surrey.ac.uk]
> Sent: Friday, July 18, 2014 11:11 AM
> To: Xuxiaohu; mpls@ietf.org
> Cc: spring@ietf.org; sfc@ietf.org
> Subject: RE: How to carry metadata/context in an MPLS packet
>
> How? A better question is "why?"
>
> What has to be done in MPLS that cannot be done outside it?
>
> Lloyd Wood
> http://about.m= e/lloydwood
> ________________________________________
> From: mpls <mpls-bounces@i= etf.org> on behalf of Xuxiaohu
> <xuxiaohu@huawei.com>=
> Sent: Friday, 18 July 2014 11:58 AM
> To: mpls@ietf.org
> Cc: <spring@ietf.org>; sfc@ietf.org
> Subject: [mpls] How to carry metadata/context in an MPLS packet
>
> Hi all,
>
> I'm now considering how to carry metadata/context in an MPLS packe= t. I just
> noticed that draft-guichard-mpls-metadata-00
> (http://tools.ietf.org/html/draft-guichard-mpls-m= etadata-00#page-6) proposes
> a way to carry metadata/context in an MPLS packet (see below):
>
> "3. =C2=A0Metadata Channel Header Format
>
> =C2=A0 =C2=A0The presence of metadata within an MPLS packet must be in= dicated in
> =C2=A0 =C2=A0the encapsulation. =C2=A0This document defines that the G= -ACh Generic
> =C2=A0 =C2=A0Associated Channel Label (GAL) [RFC5586] with label value= 13 is
> =C2=A0 =C2=A0utilized for this purpose. =C2=A0The GAL label provides a= method to
> =C2=A0 =C2=A0identify that a packet contains an "Associated Chann= el Header (ACH)"
> =C2=A0 =C2=A0followed by a non-service payload.
>
> =C2=A0 =C2=A0[RFC5586] identifies the G-ACh Generic Associated Channel= by setting
> =C2=A0 =C2=A0the first nibble of the ACH that immediately follows the = bottom label
> =C2=A0 =C2=A0in the stack if the GAL label is present, to 0001b. =C2= =A0Further
> =C2=A0 =C2=A0[RFC5586] expects that the ACH not be used to carry user = data
> =C2=A0 =C2=A0traffic. =C2=A0This document proposes an extension to all= ow the first
> =C2=A0 =C2=A0nibble of the ACH to be set to 0000b and, when following = the GAL, be
> =C2=A0 =C2=A0interpreted using the semantics defined in
> =C2=A0 =C2=A0[I-D.guichard-metadata-header] to allow metadata to be ca= rried
> =C2=A0 =C2=A0through the G-ACh channel."
>
> However, it seems that the special usage of the GAL as mentioned above= still
> conflicts with the following statement quoted from [RFC5586]:
>
> " =C2=A0The GAL MUST NOT appear in the label stack when transport= ing normal
> =C2=A0 =C2=A0user-plane packets. =C2=A0Furthermore, when present, the = GAL MUST NOT
> =C2=A0 =C2=A0appear more than once in the label stack."
>
> I wonder whether the special usage of the GAL as proposed in the above= draft
> would result in any backward compatibility issue. In addition, I wonde= r whether
> it's worthwhile to reconsider the possibility of introducing a Pro= tocol Type (PT)
> field immediately after the bottom of the MPLS label stack. With such = PT field,
> any kind of future MPLS payload (e.g., metadata header or NSH) can be = easily
> identified.
>
> Best regards,
> Xiaohu
>
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls

_______________________________________________
sfc mailing list
sfc@ietf.org
htt= ps://www.ietf.org/mailman/listinfo/sfc
--089e013a0c686d018504fe754460-- From nobody Tue Jul 22 10:12:17 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C28AB1B2970; Fri, 18 Jul 2014 05:05:36 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Z4v3_gcWK1fO; Fri, 18 Jul 2014 05:05:33 -0700 (PDT) Received: from relay.emg-ca-1.securemail.intermedia.net (relay.emg-ca-1.securemail.intermedia.net [64.78.56.32]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id BCCCF1A0ABE; Fri, 18 Jul 2014 05:05:33 -0700 (PDT) Received: from emg-ca-1-2 (localhost [127.0.0.1]) by emg-ca-1-2.localdomain (Postfix) with ESMTP id D3F6653E19; Fri, 18 Jul 2014 05:05:28 -0700 (PDT) MIME-Version: 1.0 x-echoworx-emg-received: Fri, 18 Jul 2014 05:05:28.807 -0700 x-echoworx-msg-id: e780d1aa-f0b6-47f6-aee8-b5d2e1b686c1 x-echoworx-action: delivered Received: from localhost ([127.0.0.1]) by emg-ca-1-2 (JAMES SMTP Server 2.3.2) with SMTP ID 819; Fri, 18 Jul 2014 05:05:28 -0700 (PDT) Received: from HUB021-CA-3.exch021.domain.local (unknown [10.254.4.36]) by emg-ca-1-2.localdomain (Postfix) with ESMTP id ACA6553E19; Fri, 18 Jul 2014 05:05:28 -0700 (PDT) Received: from MBX021-W3-CA-2.exch021.domain.local ([10.254.4.78]) by HUB021-CA-3.exch021.domain.local ([10.254.4.36]) with mapi id 14.03.0174.001; Fri, 18 Jul 2014 05:05:33 -0700 From: Ron Parker To: Robert Raszuk , Xuxiaohu , "sfc@ietf.org" Thread-Topic: [sfc] [spring] How to carry metadata/context in an MPLS packet Thread-Index: Ac+iK9IiUw61Lt1oTZi1TxTMkTltPwAaH8sAAAUge5A= Date: Fri, 18 Jul 2014 12:05:32 +0000 Message-ID: References: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08294118@NKGEML512-MBS.china.huawei.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [50.203.66.100] x-source-routing-agent: Processed Content-Type: multipart/alternative; boundary="_000_CDF2F015F4429F458815ED2A6C2B6B0B1A8BC971MBX021W3CA2exch_" Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/JM_8wcc4LaFhSpRrb6RLUzJhohY X-Mailman-Approved-At: Tue, 22 Jul 2014 10:12:11 -0700 Cc: "mpls@ietf.org" , "" Subject: Re: [mpls] [sfc] [spring] How to carry metadata/context in an MPLS packet X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Jul 2014 12:05:37 -0000 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with ESMTP id 470041A016A; Tue, 22 Jul 2014 11:57:24 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -101.9 X-Spam-Level: X-Spam-Status: No, score=-101.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id zDf-OXzo_n2l; Tue, 22 Jul 2014 11:57:22 -0700 (PDT) Received: from usevmg21.ericsson.net (usevmg21.ericsson.net [198.24.6.65]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 058B31A0640; Tue, 22 Jul 2014 11:57:15 -0700 (PDT) X-AuditID: c6180641-f79916d00000623a-7b-53ce5eaab656 Received: from EUSAAHC003.ericsson.se (Unknown_Domain [147.117.188.81]) by usevmg21.ericsson.net (Symantec Mail Security) with SMTP id 5C.30.25146.AAE5EC35; Tue, 22 Jul 2014 14:52:59 +0200 (CEST) Received: from EUSAAMB103.ericsson.se ([147.117.188.120]) by EUSAAHC003.ericsson.se ([147.117.188.81]) with mapi id 14.03.0174.001; Tue, 22 Jul 2014 14:57:07 -0400 From: Gregory Mirsky To: "mpls@ietf.org" Thread-Topic: BFD Directed Path discussion Thread-Index: Ac+l26e8a77RkgmdSoKSZ/ImmV7YPA== Date: Tue, 22 Jul 2014 18:57:06 +0000 Message-ID: <7347100B5761DC41A166AC17F22DF1121B7F279F@eusaamb103.ericsson.se> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [147.117.188.11] Content-Type: multipart/alternative; boundary="_000_7347100B5761DC41A166AC17F22DF1121B7F279Feusaamb103erics_" MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrNLMWRmVeSWpSXmKPExsUyuXRPoO7quHPBBsc2MlrcWrqS1eLzn22M DkweS5b8ZApgjOKySUnNySxLLdK3S+DKeL2hnaXgsU/FopdrmBsYlzl1MXJySAiYSGxsfMYE YYtJXLi3nq2LkYtDSOAoo8T8nXegnOWMEkvuHmUFqWITMJJ4sbGHHcQWEVCWODKxGyzOLKAp 0XTiM1hcWEBVYvajG1A1WhL3jzxg7GLkALL1JFbecwcJswCVNP58xwJi8wr4Suxc+xVsDCPQ Ed9PrWGCGCkucevJfKjjBCSW7DnPDGGLSrx8/I8VwlaS+Ph7PjtEfb7Eng0ToGYKSpyc+YRl AqPwLCSjZiEpm4WkDCKuI7Fg9yc2CFtbYtnC18ww9pkDj5mQxRcwsq9i5CgtTi3LTTcy3MQI jI1jEmyOOxgXfLI8xCjAwajEw6tgdi5YiDWxrLgy9xCjNAeLkjivZvW8YCGB9MSS1OzU1ILU ovii0pzU4kOMTBycUg2MO0+6tGh7u7PLpar+MLo4WaB9d0Dc0nlTGQw/p4gbhbaJZ6w+/enr FS6ubZfWazxK6Iv/sfmhr9aiOyKZpYuvr3Vvtn7c3d5acsfzZ3ySTMpDV7UlwifyqybmJx5m bc+ofDxzZY7XnHve16dtYVOX1RSLv1Vje21T1cLwn6/0Z/LvXCqmtrlaiaU4I9FQi7moOBEA eVxIVW4CAAA= Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/F0m2RcGeMTLGDktf11sGbFOwPNA Cc: "rtg-bfd@ietf.org" Subject: [mpls] BFD Directed Path discussion X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Jul 2014 18:57:24 -0000 --_000_7347100B5761DC41A166AC17F22DF1121B7F279Feusaamb103erics_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Dear All, on behalf of the authors of this work I thank you all who participated in t= he discussions Monday (BFD WG) and today (MPLS WG). Great comments and sugg= estions - very excited by your interest in this work. I've tried to capture summary of the comments and sketch possible ways to a= ddress these: * BFD Return Path TLV suitable for RFC 5880, what about S-BFD? In order to maintain stateless character of S-BFDReflector, S-BFD control p= acket may need to carry return path information. Need to discuss with autho= rs of S-BFD Base and start work on S-BFD over MPLS LSP with IP and ACH enca= psulations; * What would happen if Return Path conveyed to the far-end BFD peer= is not available? Ingress may send another BFD Return Path in its TLV alon= g with the same BFD Discriminator; * Can BFD Echo of RFC 5880 be used in conjunction with the BFD Retu= rn Path TLV over MPLS LSP? It may be interesting as BFD Echo already allows= for a payload but work on proper handling and encapsulations of BFD Echo i= s needed. Besides, use of BFD Echo over MPLS LSP may be limited to single s= egment LSPs thus S-BFD may be more generic mechanism to have stateless far-= end BFD peer; * how this work is related to Extended BFD Discriminator TLV work? = Both may be complementary, especially as parts of controlling BFD session. = Would welcome authors of Extended BFD Discriminator TLV to discussion and r= eview draft-ietf-ccamp-rsvp-te-mpls-tp-oam-ext and draft-ietf-mpls-lsp-ping= -mpls-tp-oam-conf drafts (authors are planning to bring them over the finis= h line) Please excuse me if I've missed your question and please add it to this dis= cussion. Regards, Greg --_000_7347100B5761DC41A166AC17F22DF1121B7F279Feusaamb103erics_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Dear All,

on behalf of the authors of this work I thank you al= l who participated in the discussions Monday (BFD WG) and today (MPLS WG). = Great comments and suggestions – very excited by your interest in thi= s work.

I’ve tried to capture summary of the comments = and sketch possible ways to address these:

·         BFD Return Path TLV suitable for RFC 5880, w= hat about S-BFD?

In order to maintain stat= eless character of S-BFDReflector, S-BFD control packet may need to carry r= eturn path information. Need to discuss with authors of S-BFD Base and star= t work on S-BFD over MPLS LSP with IP and ACH encapsulations;

·         What would happen if Return Path conveyed to= the far-end BFD peer is not available? Ingress may send another BFD Return= Path in its TLV along with the same BFD Discriminator;

·         Can BFD Echo of RFC 5880 be used in conjunct= ion with the BFD Return Path TLV over MPLS LSP? It may be interesting as BF= D Echo already allows for a payload but work on proper handling and encapsu= lations of BFD Echo is needed. Besides, use of BFD Echo over MPLS LSP may be limited to single segment LSPs thus S= -BFD may be more generic mechanism to have stateless far-end BFD peer;=

·         how this work is related to Extended BFD Dis= criminator TLV work? Both may be complementary, especially as parts of cont= rolling BFD session. Would welcome authors of Extended BFD Discriminator TL= V to discussion and review draft-ietf-ccamp-rsvp-te-mpls-tp-oam-ext and draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf drafts (authors are planning= to bring them over the finish line)

 

Please excuse me if I’ve missed your question = and please add it to this discussion.

 

        &nbs= p;       Regards,

        &nbs= p;            &= nbsp;          Greg=

--_000_7347100B5761DC41A166AC17F22DF1121B7F279Feusaamb103erics_-- From nobody Tue Jul 22 23:40:42 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 278FB1A0032; Tue, 22 Jul 2014 23:40:41 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PztxrYzKvS7s; Tue, 22 Jul 2014 23:40:39 -0700 (PDT) Received: from mail-pd0-x229.google.com (mail-pd0-x229.google.com [IPv6:2607:f8b0:400e:c02::229]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id F01561A002F; Tue, 22 Jul 2014 23:40:38 -0700 (PDT) Received: by mail-pd0-f169.google.com with SMTP id y10so1050198pdj.0 for ; Tue, 22 Jul 2014 23:40:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type; bh=yn5bWtQUAR54EZoEIufVuAMhPXj1DIWlRNApNjobP4U=; b=jt8YDJcztdn+IC9uF7U5PlFfPQRaF2VuGiO7AlobCX0tpZlarO36b7WS70aXSJD/L6 uhRD/1/SPfx0WyfroVsmbJyo639su+pEXSmGJ/A0y/WNPoQpxFf4Vg9S6rYux5Cvupgn w671Q38HUBUgMMyX0/ea9AIeL+uhYxkLIiJc5rPpWM7ho1xISmluUxaE05moUZNIMaRt brHsF1TNmbjI5CmgAAypchWdJfTM18GLAL/pw4MljeHc5hoj7MQR/9bFDAwqFbztKhyF YpwTsL2GYfiNsS//4qZHmQesWLAD/hSMqinI6r1sLfLIt6LZUPdTpwtsff59lejNJPEE tMqA== X-Received: by 10.70.50.230 with SMTP id f6mr8014200pdo.84.1406097638644; Tue, 22 Jul 2014 23:40:38 -0700 (PDT) MIME-Version: 1.0 Received: by 10.70.136.167 with HTTP; Tue, 22 Jul 2014 23:40:08 -0700 (PDT) In-Reply-To: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> From: Sri Date: Tue, 22 Jul 2014 23:40:08 -0700 Message-ID: To: Rob Shakir Content-Type: multipart/alternative; boundary=089e0158c8d04563a404fed69e29 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/5d9MZg-E0ecZl5YS3DiqkVf6gI0 Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Jul 2014 06:40:41 -0000 --089e0158c8d04563a404fed69e29 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Rob, see inline. [MPLS WG added to discussion] On Mon, Jul 21, 2014 at 7:38 AM, Rob Shakir wrote: > Hi SPRING, draft-kini=E2=80=A6 authors, > > I have a few comments on the discussion within this draft =E2=80=94 and a= quick > question > on the intention around the document. > > - I feel that it would be useful to provide some clarification as to wher= e > we > expect entropy to be required for load-sharing in the draft. The curren= t > wording (to me) could be read to say that where Adj-SID is used, then > there > is no requirement to consider placement for EL since there will be no > load-balancing. However, since Adj-SID can apply to a bundle (3.5.1 in > draft-filsfils-spring-segment-routing-04), or the underlying transport > for an > IGP adjacency can be multi-path (e.g., an aggregated Ethernet link) > this is not true unless a head-end PE can guarantee that a particular > adjacency is made up of a transport that has only 1 path (i.e., > explicitly > requires no load-balancing). I'm not sure how the iLER would actually > determine > this, short of the definition of new per-adjacency advertisement > capabilities. > Even if it were able to, then it seems the result is very likely to be > that an > approach that requires per-hop entropy labels to be injected is going t= o > guarantee label stack depth >=3D 3*[number of path SIDs]. > Sri> You are correct. If a SID identifies multiple physical paths as in the case of Adj-SID identifying a bundle, then load balancing on that segment would be useful. When there is no information that every SID of a LSP maps to a single physical path, a load-balancing mechanism should be used for that LSP. I agree that today there is no mechanism to give such information about the mapping, so load balancing on every segment is useful. Whether that is achieved by using an EL per segment as described in sec 3.2 thereby resulting in a label stack of 3*#SIDs is something to be discussed. The draft lists the downsides of choosing that option. > > I think that the above means that the current draft under-estimates the > depth > of the stack when considering an EL per tunnel (=C2=A73.2), which might > amplify > some of the concerns raised for this option. > Sri> The draft does not estimate stack depth (without EL) since the depth is dependent on the degree of strict-hop traffic-engineering desired by the application. If you meant to say that the label stack is deep due to the application trying to make it as close to the desired physical path but you end up using the EL per segment anyways since there isn't information to determine for sure whether the mapping is to a single physical path, then yes the label stack will be very deep. > > - =C2=A73.4 - I am not clear how we would really implement this option. I= f we > learn > midpoint capabilities, and then tune our placement of the EL based on > these, > then it seems like the only viable approach is really to consider _all_ > midpoints, and tune the placement according to the "shallowest" midpoin= t > in > the network. This is because, whilst we might expect that there is > routing via > some particular path, this might change if there is ECMP between > mid-points > nodes where some paths have different capabilities than others, and > equally > might change whilst re-routing occurs. > Sri> This is correct. In case of re-routing from ingress, the algorithm to compute EL depths have to be re-computed. If the re-route is like FRR via a bypass LSP, the PLR may want to insert ELs if load-balancing is desired along the bypass. > > In terms of discovery of the capabilities of a mid-point -- do we need = to > consider how, in a multi-area network, we discover the capabilities of = a > mid-point which might not have information about it leaked between area= s? > Sri> Option in 3.4 runs into such complications in case of multi-area. All such cases have not been addressed yet for the option in 3.4 > > - Finally, it'd be good to determine what the intention of the authors fo= r > this > document is. Do we expect that we make a recommendation as to what > equipment > vendors who are going to support SR-MPLS should optimise for? At the > moment, > the document is good at classifying the different approaches that > _could_ be > taken, but potentially requires an operator/vendor to consider > optimisation > for both a) reading very deep into the stack when acting as an LSR, b) > pushing > very deep stacks when acting as iLER, c) potentially implementing more > complex > swap() operations, whereby some reshuffling of the EL is required. > > My feeling is that it would be very useful for this document to be able > to > make a clear recommendation as to which of these approaches should be > optimised for, and hence we should debate their technical efficacy. It'= d > be > good to understand whether the authors are intending to do this, or > rather > classify the approaches. > Sri> The first goal of the draft was to list the various approaches. But the final goal is to come up with recommendations through the discussions on the various approaches. > > Cheers, > r. > > > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring > Thanks Sri --089e0158c8d04563a404fed69e29 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi Rob, see inline.

[MPLS WG added to d= iscussion]


On Mon, Jul 21, 2014 at 7:38 AM, Rob Shakir <rjs@rob.sh> wrote:
Hi SPRING, draft-kini=E2=80=A6 authors,

I have a few comments on the discussion within this draft =E2=80=94 and a q= uick question
on the intention around the document.

- I feel that it would be useful to provide some clarification as to where = we
=C2=A0 expect entropy to be required for load-sharing in the draft. The cur= rent
=C2=A0 wording (to me) could be read to say that where Adj-SID is used, the= n there
=C2=A0 is no requirement to consider placement for EL since there will be n= o
=C2=A0 load-balancing. However, since Adj-SID can apply to a bundle (3.5.1 = in
=C2=A0 draft-filsfils-spring-segment-routing-04), or the underlying transpo= rt for an
=C2=A0 IGP adjacency can be multi-path (e.g., an aggregated Ethernet link)<= br> =C2=A0 this is not true unless a head-end PE can guarantee that a particula= r
=C2=A0 adjacency is made up of a transport that has only 1 path (i.e., expl= icitly
=C2=A0 requires no load-balancing). I'm not sure how the iLER would act= ually determine
=C2=A0 this, short of the definition of new per-adjacency advertisement cap= abilities.
=C2=A0 Even if it were able to, then it seems the result is very likely to = be that an
=C2=A0 approach that requires per-hop entropy labels to be injected is goin= g to
=C2=A0 guarantee label stack depth >=3D 3*[number of path SIDs].

Sri> You are correct. If a SID identifies m= ultiple physical paths as in the case of Adj-SID identifying a bundle, then= load balancing on that segment would be useful. When there is no informati= on that every SID of a LSP maps to a single physical path, a load-balancing= mechanism should be used for that LSP. I agree that today there is no mech= anism to give such information about the mapping, so load balancing on ever= y segment is useful. Whether that is achieved by using an EL per segment as= described in sec 3.2 thereby resulting in a label stack of 3*#SIDs is some= thing to be discussed. The draft lists the downsides of choosing that optio= n.=C2=A0
=C2=A0

=C2=A0 I think that the above means that the current draft under-estimates = the depth
=C2=A0 of the stack when considering an EL per tunnel (=C2=A73.2), which mi= ght amplify
=C2=A0 some of the concerns raised for this option.

Sri> The draft does not estimate stack depth= (without EL) since the depth is dependent on the degree of strict-hop traf= fic-engineering desired by the application. If you meant to say that the la= bel stack is deep due to the application trying to make it as close to the = desired physical path but you end up using the EL per segment anyways since= there isn't information to determine for sure whether the mapping is t= o a single physical path, then yes the label stack will be very deep.=C2=A0=
=C2=A0

- =C2=A73.4 - I am not clear how we would really implement this option. If = we learn
=C2=A0 midpoint capabilities, and then tune our placement of the EL based o= n these,
=C2=A0 then it seems like the only viable approach is really to consider _a= ll_
=C2=A0 midpoints, and tune the placement according to the "shallowest&= quot; midpoint in
=C2=A0 the network. This is because, whilst we might expect that there is r= outing via
=C2=A0 some particular path, this might change if there is ECMP between mid= -points
=C2=A0 nodes where some paths have different capabilities than others, and = equally
=C2=A0 might change whilst re-routing occurs.

Sri> This is correct. In case of re-routing from ingress, the alg= orithm to compute EL depths have to be re-computed. If the re-route is like= FRR via a bypass LSP, the PLR may want to insert ELs if load-balancing is = desired along the bypass.=C2=A0
=C2=A0

=C2=A0 In terms of discovery of the capabilities of a mid-point -- do we ne= ed to
=C2=A0 consider how, in a multi-area network, we discover the capabilities = of a
=C2=A0 mid-point which might not have information about it leaked between a= reas?

Sri> Option in 3.4 runs into s= uch complications in case of multi-area. All such cases have not been addre= ssed yet for the option in 3.4
=C2=A0

- Finally, it'd be good to determine what the intention of the authors = for this
=C2=A0 document is. Do we expect that we make a recommendation as to what e= quipment
=C2=A0 vendors who are going to support SR-MPLS should optimise for? At the= moment,
=C2=A0 the document is good at classifying the different approaches that _c= ould_ be
=C2=A0 taken, but potentially requires an operator/vendor to consider optim= isation
=C2=A0 for both a) reading very deep into the stack when acting as an LSR, = b) pushing
=C2=A0 very deep stacks when acting as iLER, c) potentially implementing mo= re complex
=C2=A0 swap() operations, whereby some reshuffling of the EL is required.
=C2=A0 My feeling is that it would be very useful for this document to be a= ble to
=C2=A0 make a clear recommendation as to which of these approaches should b= e
=C2=A0 optimised for, and hence we should debate their technical efficacy. = It'd be
=C2=A0 good to understand whether the authors are intending to do this, or = rather
=C2=A0 classify the approaches.

Sri>= The first goal of the draft was to list the various approaches. But the fi= nal goal is to come up with recommendations through the discussions on the = various approaches.
=C2=A0

Cheers,
r.


_______________________________________________
spring mailing list
spring@ietf.org
= https://www.ietf.org/mailman/listinfo/spring

Thanks
Sri
--089e0158c8d04563a404fed69e29-- From nobody Wed Jul 23 05:05:26 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id F2AA81A0A9F for ; Wed, 23 Jul 2014 05:05:22 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -0.467 X-Spam-Level: X-Spam-Status: No, score=-0.467 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, IP_NOT_FRIENDLY=0.334, J_CHICKENPOX_72=0.6, J_CHICKENPOX_91=0.6, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ivBroWt4ZPSY for ; Wed, 23 Jul 2014 05:05:19 -0700 (PDT) Received: from gproxy4-pub.mail.unifiedlayer.com (gproxy4-pub.mail.unifiedlayer.com [69.89.23.142]) by ietfa.amsl.com (Postfix) with SMTP id BD42E1A052E for ; Wed, 23 Jul 2014 05:05:19 -0700 (PDT) Received: (qmail 26776 invoked by uid 0); 23 Jul 2014 12:05:13 -0000 Received: from unknown (HELO cmgw4) (10.0.90.85) by gproxy4.mail.unifiedlayer.com with SMTP; 23 Jul 2014 12:05:13 -0000 Received: from box313.bluehost.com ([69.89.31.113]) by cmgw4 with id Vu561o00s2SSUrH01u59BP; Wed, 23 Jul 2014 12:05:11 -0600 X-Authority-Analysis: v=2.1 cv=OcELUHjY c=1 sm=1 tr=0 a=h1BC+oY+fLhyFmnTBx92Jg==:117 a=WrhVjQHxoPwA:10 a=zqHLjNqbk_wA:10 a=HFCU6gKsb0MA:10 a=IkcTkHD0fZMA:10 a=wU2YTnxGAAAA:8 a=cNaOj0WVAAAA:8 a=-NfooI8aBGcA:10 a=uEJ9t1CZtbIA:10 a=48vgC7mUAAAA:8 a=7xPyp7LSBkGDkgT6ofoA:9 a=aFWM0igt9LHy5JB9:21 a=paBcm47MSIfgH0O7:21 a=QEXdDO2ut3YA:10 a=33rK67OTR_gA:10 a=lZB815dzVvQA:10 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=labn.net; s=default; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:References:Subject:CC:To:MIME-Version:From:Date:Message-ID; bh=UgcAzg/cKvbDWqD/iEK1jE3HCEu7J0Mfjt4/UtcG3Io=; b=asA/fKN1zUrDXznKizeh+AMuPOS6c6dwqhJ14l9ik8jDMVAkMnPEx9NyavmoTWlEPkXDcz0Po4dVEGAnUZSRe1qSAZsQzqgrFA+w4yt9l2+zhyM0YOcR5GZ5rvMNSSKA; Received: from box313.bluehost.com ([69.89.31.113]:56985 helo=[127.0.0.1]) by box313.bluehost.com with esmtpa (Exim 4.82) (envelope-from ) id 1X9vIB-0007oW-8K; Wed, 23 Jul 2014 06:05:08 -0600 Message-ID: <53CFA4FC.3080304@labn.net> Date: Wed, 23 Jul 2014 08:05:16 -0400 From: Lou Berger User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: Yaacov Weingarten , Jeong Ryoo References: <53A5ABED.9080408@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28748144@SMTP2.etri.info> In-Reply-To: X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Identified-User: {1038:box313.bluehost.com:labnmobi:labn.net} {sentby:smtp auth 69.89.31.113 authed with lberger@labn.net} Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/gzatsgm5snh1et5BQa_nlK2lWHA Cc: "mpls@ietf.org" , "draft-ietf-mpls-smp-requirements.all@tools.ietf.org" , "rtg-dir@ietf.org" , "rtg-ads@tools.ietf.org" Subject: Re: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-smp-requirements-06.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Jul 2014 12:05:23 -0000 Yaacov, Jeong, I'm not sure how the latest text addresses the ambiguity you identified below. Perhaps adding the words "on a per LSP basis" to the requirement? If the ambiguity is intentional, then of course no change is warranted. Lou On 7/5/2014 3:49 PM, Yaacov Weingarten wrote: > > Lou, hi > I would like to address two of your comments, in your follow-up > message, since I am the source of the change in terminology. > > Regarding the two occurences of "assigned" in place of "utilized" - > when I read the proposed changes,as discussed amongst the authors, I > felt that in those two instances the use of "utilized" could lead to > some ambiguity. > > If we state that "resources SHOULD be utilized on a first come first > served basis" this could be interpreted (IMO) as referring to the > packet level, rather than utilized by a specific path, such that > packets from different paths could be interspersed along the shared > segments. Therefore,I suggested that or this context it would be > better to use a word that meant that the first-come first served basis > was at the level of assigning (or allocating) the resources rather > than utilizing them. > > Hope this clarifies this point. I am certain that I speak for the > other authors in saying that I am open to other suggestions. > > BR, > yaacov > > On Jul 4, 2014 3:53 AM, "Jeong Ryoo" > wrote: > > Dear Lou, > > > > Thanks a lot for your valuable comments. > > > > The authors of this draft have discussed your comments, and are > proposing our resolutions to your comments. Please, let us know if > the proposal is appropriate to address your comments and concerns. > > > > Best regards, > > > > Authors of draft-ietf-mpls-smp-requirements draft > > > > ****** Beginning of Comment Resolution ****** > > > > - Document's usage of "committed" vs "allocated" resources: > > In section 1 the document introduces the notion that the > distinction between protection and restoration is based on when > resources are "committed". This difference from past > definition. RFC4427 and 6372 make the distinction that protection > and restoration differ based on when resources are *allocated* not > *committed*. To quote RFC 4427: > > The distinction between protection and restoration is made based > on the resource allocation done during the recovery LSP/span > establishment. The distinction between different types of > restoration is made based on the level of route computation, > signaling, and resource allocation during the restoration > LSP/span establishment. > > This difference also leads to come confused statements in the > document as well as ambiguity in the text, i.e. confusion by the > reader. The term "committed" is not tightly defined in this > document (or earlier work) and is used differently than how > "allocated" has been used. An example of this can be found in > Section 3.1 which states: > > However, the commitment of the resources, at least for the > shared segments, will only be finalized when the protection > path is actually activated. Therefore, for the purists - > regarding the terminology - SMP lies somewhere between > protection and restoration. > > Both sentences are problematic. In the first, commitment seems to > cover a "protection switch" would "connect" the protection path > but not the earlier "allocation" of resources. (Quoted terms are > used in earlier RFCs.) The second conclusion is based on the new > distinction of protection vs. restoration and is unnecessary with > the existing distinction. > > This issue exists in multiple places in the document where > "committed" is used and I'd recommend that each should be replaced > with terminology used in the referenced RFCs, i.e., "allocation", > "connection", "cross-connect", "protection switch(over)", ... > > Note I'm *not* highlighting all cases where there are problems in the > document related to this issue. There are a couple of places in the > document where I think it's possible that once this terminology > ambiguity is corrected that I'll have other substantive comments. > > > > [Authors] After reviewing RFCs 4427, 6372, 3945, 4426, and 4428, > we concluded that the distinction between protection and > restoration should be aligned with the exiting documents > normatively referenced by this document. Accordingly, the > following 16 modifications will be done in revision: > > > > (1) Section 1, the third paragraph > > OLD: > > As pointed out > > in [RFC6372] and [RFC4428], applying 1+1 linear protection requires > > that resources are committed for use by both the working and > > protection paths. Applying 1:1 protection requires that the same > > resources are committed, but allows the resources of the protection > > path to be utilized for pre-emptible extra traffic. > > NEW: > > As pointed out > > in [RFC6372] and [RFC4428], applying 1+1 protection requires > > that resources are allocated for use by both the working and > > protection paths. Applying 1:1 protection requires that the same > > resources are allocated, but allows the resources of the protection > > path to be utilized for pre-emptible extra traffic. > > > > (2) The whole text in Section 3.1 will be replaced with: > > [RFC6372], based upon the definitions in [RFC4427], differentiates > between "protection" and "restoration" dependent upon the dynamism > of the resource allocation. The same distinction is used in > [RFC3945], [RFC4426], and [RFC4428]. This document also uses the > same distinction between protection and restoration as stated in > [RFC6372]. > > > > (3) In page 6, > > OLD: > > The use of preemption in the network is typically a business or > > policy decision such that when protection resources are contended, > > priority can be applied to determine to which parties the protection > > resources are committed. > > NEW: > > The use of preemption in the network is typically a business or > > policy decision such that when protection resources are contended, > > priority can be applied to determine which parties utilize the > protection > > resources. > > > > (4) Page 7, the first paragraph: > > OLD: > > the resources for the protection path are fully committed, > > NEW > > the resources for the protection path are fully dedicated, > > > > OLD: > > resources may be planned but would not be committed until … > > NEW: > > resources may be planned but would not be utilized until … > > > > (5) In the second paragraph in page 7, > > OLD: > > "Hard Preemption" requires the programming of selectors at the > ingress of each shared segment to specify which backup path has > the highest priority when committing protection resources, the > others being preempted. > > NEW > > "Hard Preemption" requires the programming of selectors at the > ingress of each shared segment to specify the priorities of backup > paths, so that traffic of lower priority paths can be preempted. > > > > (6) The first paragraph of Section 4.1: > > OLD: > > … and commit the associated resources. The commitment of resources > > is dependent upon … > > NEW: > > … and coordinate the utilization of the associated shared resources. > > The resource utilization coordination is dependent upon … > > > > (7) The second paragraph of Section 4.1: > > OLD: > > When the reserved resources of the shared segments are committed to a > > particular protection path, there may not be sufficient resources > > available for an additional protection path. This then implies that > > if another working path of the SMP domain triggers a protection > > switch, the commitment of the resources may fail. In order to > > optimize the operation of the commitment and preparing for cases of > > multiple working paths failing, the commitment of the shared > > resources are be coordinated between the different working paths in > > the SMP network. > > NEW: > > When the reserved resources of the shared segments are utilized by a > > particular protection path, there may not be sufficient resources > > available for an additional protection path. This then implies that > > if another working path of the SMP domain triggers a protection > > switch, the resource utilization coordination may fail. The > different working paths in > > the SMP network are involved in the resource utilization > coordination. > > . > > > > (8) Section 5.1, > > OLD: > > … and commit the associated resources. > > NEW > > … and coordinate the utilization of the associated shared resources. > > > > (9) In Section 5.1, > > OLD: > > In the case of multiple working paths failing, the commitment of the > > shared resources SHALL be coordinated between the different working > > paths in the SMP network. > > NEW: > > In the case of multiple working paths failing, the shared resource > utilization > > coordination SHALL be between the different working > > paths in the SMP network. > > > > (10) Section 5.1.1. > > OLD: > > … because they already have been committed to the protection of, > for example, a higher priority working path. > > NEW: > > … because they already have been utilized for the protection of, > for example, a higher priority working path. > > > > (11) Section 5.2, the second bullet item: > > OLD: > > Resources of the shared segments SHALL be committed to the > > protection path … > > NEW: > > Resources of the shared segments SHALL be utilized by the > > protection path … > > > > (12) Section 5.2, the third bullet item: > > OLD: > > If multiple protection paths of equal priority are requesting > > allocation of the shared resources, the resources SHOULD be > > committed on a first come first served basis. > > NEW: > > If multiple protection paths of equal priority are requesting > > the shared resources, the resources SHOULD be > > assigned on a first come first served basis. > > > > (13) Section 5.2, the fourth bullet item: > > OLD: > > If the protection resources are committed to a protection path, > > whose working path has a lower priority, resources required for > > the higher priority path SHALL be committed to the higher priority > > path. > > NEW: > > If the protection resources are utilized by a protection path, > > whose working path has a lower priority, resources required for > > the higher priority path SHALL be assigned to the higher priority > > path. > > > > > > (14) Section 5.2. the seventh bullet item > > OLD: > > Once resources of shared segments have been successfully committed > > to a protection path, … > > NEW: > > Once resources of shared segments have been successfully utilized > > by a protection path, … > > > > (15) Section 5.3, the first paragraph, > > OLD: > > … request the commitment of protection resources. If the necessary > > shared resources are unavailable to be committed to the protection > > path, the endpoints … > > > > NEW: > > … request the coordination of the shared resource utilization. If > the necessary > > shared resources are unavailable, the endpoints … > > > > (16) Section 5.3, the second paragraph, > > OLD: > > Similarly, if preemption is supported and the resources currently > > committed for a particular working path are … > > NEW: > > Similarly, if preemption is supported and the resources currently > > utilized by a particular working path are … > > > > > > - Section 2, 1st paragraph, last sentence. This sentence really > defines > the scope/purpose of the document, i.e., "clarifies the instructions > to protocol designers producing solutions that satisfy the > requirements set out in this document." As such, I'd repeat this in > the abstract and move it to a more pronounced place in section 1 (or > 3). > > [Authors] We can add the following paragraph at the end of Section 1: > > “This document is intended to clarify the instructions to protocol > designers producing solutions that satisfy the requirements set > out in this document.†> > > > > - General comment: fate-sharing for co-routed bidirectional LSP > protection: How is co-routing preserved for the reverse path in SMP? > I'd assumed the protection switch coordination protocol would be > required to trigger a switchover of the reverse LSP in the co-routed > case, but don't see this in the document. > > [Authors] Fate-sharing is not required by this document. Even in > the PSC linear protection switching, such as RFC 6378 (PSC) and > RFC 7271 (PSC in APS mode), fate-sharing is not required as > unidirectional switching is allowed. This document does not impose > any restriction on co-routing, either. > > > > > - In section 4 and 5.2 you reference 5712 and 3209 as defining > preemption terminology and behavior. I think 6372 is the right > reference here as it defines both in the context of survivability and > in dependent of control plane. > > [Authors] One concern is that RFC 6372 describes both soft and > hard preemptions in the context of extra traffic, which is not > exactly the case for SMP. > > > > > - In section 4.2 you say "Therefore, it is suggested that this be > carried out under the control of a dynamic control plane similar to > GMPLS [RFC3945]." perhaps you mean "based on GMPLS"? If so, great, > please make the correction. If not, I think the debate of which > control protocol is used for MPLS-TP is way beyond the scope of this > document. > > [Authors] Yes, we will make the correction. > > > > > - Section 5.1, paragraph 1. Why are you using "SHOULD NOT" here? If > referring to solutions conformant with this document, then these are > informative statements, "and a non-control plane based SMP switchover > mechanism is used, the control plane SHALL NOT ...". If referring to > an operator's/user's choice of protection mechanism, I think the most > you can say is MAY. > > [Authors] The first case is the one we are aiming at. We will use > SHALL NOT. > > > > > - Section 5.2. "Tie-breaking rules SHALL be defined in scope of an SMP > domain." As this is a requirement, what you mean by "tie-breaking > rules" should be defined directly or by reference. > > [Authors] The sentence can be rewritten as: > > OLD: > > Tie-breaking rules SHALL be defined in scope of an SMP domain. > > NEW: > > In order to cover the situation where the first come first served > principle cannot resolve the contention among multiple equal > priority requests, i.e., when the requests occur simultaneously,, > tie-breaking rules SHALL be defined in scope of an SMP domain. > > > > > > > - Section 5.3. RFC6372 takes an approach where preemption notification > leverages the standard MPLS-TP OAM mechanisms, is there any reason to > do more / not just follow 6372? > > [Authors] We can add the following sentence at the end: > > “As described in [RFC6372], the event of preemption may be > detected by OAM and reported as a fault or a degradation of > traffic delivery.†> > > - Section 5.7. There may be coordination required on > soft-preemption as > well (depending on the cross-connects established during LSP > establishment) so coordinated switching should be supported > independent of preemption mode. > > [Authors] Yes, we will change the second paragraph from “SMP in > hard-preemption mode SHOULD …†to “SMP SHOULD …†and move the > changed paragraph above the first paragraph. > > > > > Nits: > > - Abstract: I don't recall the term "executive action" being used > in any > earlier related/referenced RFCs. Rather than introduce a new (and > undefined) term, perhaps you can use an existing one, e.g., > "protection switch"? > > [Authors] Yes, the term will be changed as you suggested. > > > > > - Section 1, paragraph 1. Do we really need another definition of > MPLS-TP to debate? I suggest just referencing your favorite MPLS-TP > document(s) and dropping the first four sentences. > > The last sentence also makes a subjective statement. Whether it is > critical or no is unnecessary. You can just say something like 6372 > provides a survivability framework for MPLS-TP and is the foundation > for this document. > > [Authors] The proposed text for the paragraph 1 is: > > “The MPLS Transport Profile (MPLS-TP) is described in [RFC5921], > > and [RFC6372] provides a survivability framework for MPLS-TP > > and is the foundation for this document.†> > > > > - Section 1, paragraph 3. Isn't the right reference 4427 not 4428? > Also drop the word linear, as it is an unnecessary qualifier and > 4427/4428 don't use it. > > [Authors] OK. > > > > > > > - Sections 3 (and to a lesser degree section 2) are really > introductory > text. I'm unsure as to why they aren't part of section 1. > > [Authors] Section 3 was intended to present a reference model for > SMP. Some text of Section 2 is repeated in Section 1 as you > suggested earlier. > > > > > > > - Section 3.2 should have a reference for "existing control plane > solutions for SMP within MPLS". > > [Authors] [RFC4206] will be added as a reference > > > - Section 3.2 again uses the "executive action" term. > > [Authors] OK, the term will be changed. > > > > > - Section 4.1. You say "two operations simultaneously". Do you really > mean "simultaneously" or merely that they must both occur for > protection to be provided? (Same comment in section 5.1. > > [Authors] Both actions should occur at the same time, or as > closely as possible to provide fast protection. > > > > > - Section 5.2. I suggest numbering the currently bulletted > requirements > list. > > [Authors] OK, we will use numbers. > > > > > - Section 5.2: First paragraph and forth bullet last sentence. These > both basically cover the same topic (preemption) and actually say > slightly different things. I suggest combine into a single > requirement to ensure consistency and full coverage of the topic. > > [Authors] The first paragraph is for soft-preemption, while the > fourth bullet belongs to the requirements of hard-preemption. > > > - Section 5.2, req 5. How does this relate to section 5.5? Shouldn't > the topics related to timing be consolidated? > > [Authors] Yes, req 5 can be moved to Section 5.5. > > > > > - Section 5.2: requirement 6 seems to be a subset of 7, so it > should be > dropped. > > [Authors] Yes, it will be deleted. > > > - Section 5.2, requirement 8. Isn't this a subset of 9? Why call out > just this one traffic treatment (sub) requirement? > > [Authors] Req. 9 will be deleted as it seems to require control > plane supports. > > > > - Section 5.3. s/MAY/will > > [Authors] OK. > > > > > - section 5.4: " When the working path detects.." detection is by the > node not the path. > > [Authors] Yes. We will simply say that “When the condition that > triggered the protection switching is cleared, …†> > > - Section 5.4, last sentence. This is only the 2nd time you imply that > the document covers requirements on a new protocol. I think this > point is currently too subtle in the document. (This point was also > made as a minor comment.) > > [Authors] As in other protection switching technologies, two modes > of operations (revertive and non-revertive) are required. > > > > > - section 5.6. RFC 6372 should be referenced > > [Authors] We will add “as described in [RFC6372]†to the ends of > two paragraphs for WTR timer and hold-off timer. > > > > ***** End of Comment resolution ***** > > > > > > > ------------------------------------------------------------------------ > *보낸 사람 : *"Lou Berger" > > *보낸 날짜 : *2014-06-22 01:00:48 ( +09:00 ) > *받는 사람 : *rtg-ads@tools.ietf.org > > > *참조 : *rtg-dir@ietf.org > >, > draft-ietf-mpls-smp-requirements.all@tools.ietf.org > > >, > mpls@ietf.org > > *제목 : *[mpls] RtgDir review: draft-ietf-mpls-smp-requirements-06.txt > > > Hello, > > I have been selected as the Routing Directorate reviewer for this > draft. The Routing Directorate seeks to review all routing or > routing-related drafts as they pass through IETF last call and IESG > review, and sometimes on special request. The purpose of the review is > to provide assistance to the Routing ADs. For more information > about the > Routing Directorate, please see > http://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir > > Although these comments are primarily for the use of the Routing > ADs, it > would be helpful if you could consider them along with any other IETF > Last Call comments that you receive, and strive to resolve them > through > discussion or by updating the draft. > > Document: draft-ietf-mpls-smp-requirements-06.txt > Reviewer: Lou Berger > Review Date: June 21 2014 > IETF LC End Date: 2014-06-23 > Intended Status: Informational > > Summary: > I have some minor concerns about this document that I think > should (must, actually) be resolved before publication. > > Comments: > > I think the document is well written and, other than a couple of > terminology related issues, easily understood. The document does > have a number of terminology and technical issues which should be > readily resolved prior to publication. > > Major Issues: > > Major issues are the type of concerns that will result in the > document being blocked until they are resolved. The Routing ADs will > become involved. Please include all of the major issues you have > found. Give as much context information as possible (e.g., section > numbers, paragraph counts). If you find no major issues, please > write: "No major issues found." > > - No major issues found. In particular, I expect all issues can be > resolved without AD intervention. Some of the minor issues, if not > resolved will be escalated to the AD/major issue category. > > Minor Issues: > > Minor issues are concerns about clarity or technical accuracy that > should be discussed and resolved before publication, but which would > normally be resolved between the authors and the reviewers. Please > include all of the minor issues you have found. Give as much context > information as possible (e.g., section numbers, paragraph counts). > If you find no minor issues, please write: "No minor issues found." > > - Document's usage of "committed" vs "allocated" resources: > > In section 1 the document introduces the notion that the > distinction between protection and restoration is based on when > resources are "committed". This difference from past > definition. RFC4427 and 6372 make the distinction that protection > and restoration differ based on when resources are *allocated* not > *committed*. To quote RFC 4427: > > The distinction between protection and restoration is made based > on the resource allocation done during the recovery LSP/span > establishment. The distinction between different types of > restoration is made based on the level of route computation, > signaling, and resource allocation during the restoration > LSP/span establishment. > > This difference also leads to come confused statements in the > document as well as ambiguity in the text, i.e. confusion by the > reader. The term "committed" is not tightly defined in this > document (or earlier work) and is used differently than how > "allocated" has been used. An example of this can be found in > Section 3.1 which states: > > However, the commitment of the resources, at least for the > shared segments, will only be finalized when the protection > path is actually activated. Therefore, for the purists - > regarding the terminology - SMP lies somewhere between > protection and restoration. > > Both sentences are problematic. In the first, commitment seems to > cover a "protection switch" would "connect" the protection path > but not the earlier "allocation" of resources. (Quoted terms are > used in earlier RFCs.) The second conclusion is based on the new > distinction of protection vs. restoration and is unnecessary with > the existing distinction. > > This issue exists in multiple places in the document where > "committed" is used and I'd recommend that each should be replaced > with terminology used in the referenced RFCs, i.e., "allocation", > "connection", "cross-connect", "protection switch(over)", ... > > Note I'm *not* highlighting all cases where there are problems in the > document related to this issue. There are a couple of places in the > document where I think it's possible that once this terminology > ambiguity is corrected that I'll have other substantive comments. > > - Section 2, 1st paragraph, last sentence. This sentence really > defines > the scope/purpose of the document, i.e., "clarifies the instructions > to protocol designers producing solutions that satisfy the > requirements set out in this document." As such, I'd repeat this in > the abstract and move it to a more pronounced place in section 1 (or > 3). > > - General comment: fate-sharing for co-routed bidirectional LSP > protection: How is co-routing preserved for the reverse path in SMP? > I'd assumed the protection switch coordination protocol would be > required to trigger a switchover of the reverse LSP in the co-routed > case, but don't see this in the document. > > - In section 4 and 5.2 you reference 5712 and 3209 as defining > preemption terminology and behavior. I think 6372 is the right > reference here as it defines both in the context of survivability and > in dependent of control plane. > > - In section 4.2 you say "Therefore, it is suggested that this be > carried out under the control of a dynamic control plane similar to > GMPLS [RFC3945]." perhaps you mean "based on GMPLS"? If so, great, > please make the correction. If not, I think the debate of which > control protocol is used for MPLS-TP is way beyond the scope of this > document. > > - Section 5.1, paragraph 1. Why are you using "SHOULD NOT" here? If > referring to solutions conformant with this document, then these are > informative statements, "and a non-control plane based SMP switchover > mechanism is used, the control plane SHALL NOT ...". If referring to > an operator's/user's choice of protection mechanism, I think the most > you can say is MAY. > > - Section 5.2. "Tie-breaking rules SHALL be defined in scope of an SMP > domain." As this is a requirement, what you mean by "tie-breaking > rules" should be defined directly or by reference. > > - Section 5.3. RFC6372 takes an approach where preemption notification > leverages the standard MPLS-TP OAM mechanisms, is there any reason to > do more / not just follow 6372? > > - Section 5.7. There may be coordination required on > soft-preemption as > well (depending on the cross-connects established during LSP > establishment) so coordinated switching should be supported > independent of preemption mode. > > Nits: > > - Abstract: I don't recall the term "executive action" being used > in any > earlier related/referenced RFCs. Rather than introduce a new (and > undefined) term, perhaps you can use an existing one, e.g., > "protection switch"? > > - Section 1, paragraph 1. Do we really need another definition of > MPLS-TP to debate? I suggest just referencing your favorite MPLS-TP > document(s) and dropping the first four sentences. > > The last sentence also makes a subjective statement. Whether it is > critical or no is unnecessary. You can just say something like 6372 > provides a survivability framework for MPLS-TP and is the foundation > for this document. > > - Section 1, paragraph 3. Isn't the right reference 4427 not 4428? > Also drop the word linear, as it is an unnecessary qualifier and > 4427/4428 don't use it. > > - Sections 3 (and to a lesser degree section 2) are really > introductory > text. I'm unsure as to why they aren't part of section 1. > > - Section 3.2 should have a reference for "existing control plane > solutions for SMP within MPLS". > > - Section 3.2 again uses the "executive action" term. > > - Section 4.1. You say "two operations simultaneously". Do you really > mean "simultaneously" or merely that they must both occur for > protection to be provided? (Same comment in section 5.1. > > - Section 5.2. I suggest numbering the currently bulletted > requirements > list. > > - Section 5.2: First paragraph and forth bullet last sentence. These > both basically cover the same topic (preemption) and actually say > slightly different things. I suggest combine into a single > requirement to ensure consistency and full coverage of the topic. > > - Section 5.2, req 5. How does this relate to section 5.5? Shouldn't > the topics related to timing be consolidated? > > - Section 5.2: requirement 6 seems to be a subset of 7, so it > should be > dropped. > > - Section 5.2, requirement 8. Isn't this a subset of 9? Why call out > just this one traffic treatment (sub) requirement? > > - Section 5.3. s/MAY/will > > - section 5.4: " When the working path detects.." detection is by the > node not the path. > > - Section 5.4, last sentence. This is only the 2nd time you imply that > the document covers requirements on a new protocol. I think this > point is currently too subtle in the document. (This point was also > made as a minor comment.) > > - section 5.6. RFC 6372 should be referenced > > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > From nobody Wed Jul 23 08:26:08 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5D38B1B28D4; Wed, 23 Jul 2014 08:26:06 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ciusBknw1omn; Wed, 23 Jul 2014 08:26:04 -0700 (PDT) Received: from cappuccino.rob.sh (cappuccino.rob.sh [IPv6:2a03:9800:10:4c::cafe:b00c]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 739531A031D; Wed, 23 Jul 2014 08:26:01 -0700 (PDT) Received: from [31.133.166.167] (helo=dhcp-a6a7.meeting.ietf.org) by cappuccino.rob.sh with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1X9yQY-0004oe-Pl; Wed, 23 Jul 2014 16:25:58 +0100 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Content-Type: text/plain; charset=windows-1252 From: Rob Shakir In-Reply-To: Date: Wed, 23 Jul 2014 11:25:54 -0400 Content-Transfer-Encoding: quoted-printable Message-Id: <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> To: Sri X-Mailer: Apple Mail (2.1878.6) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/GYHNs9k-VPaBf8gtBJ4x0NEd9gM Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Jul 2014 15:26:06 -0000 Hi Sri! Thanks for the feedback. On 23 Jul 2014, at 02:40, Sri wrote: > Sri> You are correct. If a SID identifies multiple physical paths as = in the case of Adj-SID identifying a bundle, then load balancing on that = segment would be useful. When there is no information that every SID of = a LSP maps to a single physical path, a load-balancing mechanism should = be used for that LSP. I agree that today there is no mechanism to give = such information about the mapping, so load balancing on every segment = is useful. Whether that is achieved by using an EL per segment as = described in sec 3.2 thereby resulting in a label stack of 3*#SIDs is = something to be discussed. The draft lists the downsides of choosing = that option.=20 > =20 >=20 > I think that the above means that the current draft under-estimates = the depth > of the stack when considering an EL per tunnel (=A73.2), which might = amplify > some of the concerns raised for this option. >=20 >=20 > Sri> The draft does not estimate stack depth (without EL) since the = depth is dependent on the degree of strict-hop traffic-engineering = desired by the application. If you meant to say that the label stack is = deep due to the application trying to make it as close to the desired = physical path but you end up using the EL per segment anyways since = there isn't information to determine for sure whether the mapping is to = a single physical path, then yes the label stack will be very deep.=20 rjs> Absolutely. The point that I think is important here is that in the = case that we have: src->[ A ] -- [ B ] -- [ C ] -- [ D ] -- [ E ]->sink \ | / --------------[ F ] ----- And we have a strict requirement for A-B-C-D-E, then whilst it might = immediately look like we could specify: [5 labels] then actually, the requirement for EL per tunnel is now: = [15 labels] The example that you have in the document makes the case look somewhat = better than this. As you say, this is because the application that is = chosen in the example is somewhat less strict with its path placement = requirements, and a number of the labels in the stack are associated = with services. A reader could easily conclude that since the strict = src->A->B->C->D->E->sink path that is chosen has affinity to individual = adjacencies, this concern does not apply, but to deal with the fact that = things are bundles/LAGs, then I think it does.=20 It=92d be great if we could patch the wording (happy to help contribute) = to provide some wording that says that applications that already produce = deep label stacks would produce even deeper label stacks with this = option AND we know that there are limitations with the number of labels = that can be pushed by real h/w today. > Sri> This is correct. In case of re-routing from ingress, the = algorithm to compute EL depths have to be re-computed. If the re-route = is like FRR via a bypass LSP, the PLR may want to insert ELs if = load-balancing is desired along the bypass.=20 >=20 >=20 > In terms of discovery of the capabilities of a mid-point -- do we = need to > consider how, in a multi-area network, we discover the capabilities = of a > mid-point which might not have information about it leaked between = areas? >=20 > Sri> Option in 3.4 runs into such complications in case of multi-area. = All such cases have not been addressed yet for the option in 3.4 rjs> Sure =97 it would potentially be good to note this as a downside. = Especially if there=92s no clear solution other than leaking information = between areas, since this has impact on operator=92s network designs = today. > - Finally, it'd be good to determine what the intention of the = authors for this > document is. Do we expect that we make a recommendation as to what = equipment > vendors who are going to support SR-MPLS should optimise for? At the = moment, > the document is good at classifying the different approaches that = _could_ be > taken, but potentially requires an operator/vendor to consider = optimisation > for both a) reading very deep into the stack when acting as an LSR, = b) pushing > very deep stacks when acting as iLER, c) potentially implementing = more complex > swap() operations, whereby some reshuffling of the EL is required. >=20 > My feeling is that it would be very useful for this document to be = able to > make a clear recommendation as to which of these approaches should = be > optimised for, and hence we should debate their technical efficacy. = It'd be > good to understand whether the authors are intending to do this, or = rather > classify the approaches. >=20 > Sri> The first goal of the draft was to list the various approaches. = But the final goal is to come up with recommendations through the = discussions on the various approaches. rjs> Great =97 aligned with this, I think there would be some utility to = adding another option, which is that where there are ECMPs that can be = differentiated in terms of use of different SIDs (e.g., load-balancing = across two core planes), then a head-end based option (as per the = approach that we would take today with RSVP-TE LSPs) is possible. rjs> Addressing the final goal - as per Stephane=92s comments - I would = like to recommend that we specify =A73.1 as the target option (such that = we have a single ELI/EL deeper in the stack) as the =93ideal=94 option. = It then seems to me that a debate as to whether the forwarding behaviour = in =A73.3 is possible with most h/w today (both mean that either we = change the number of operations that are required on a forwarding device = when popping/swapping labels as far as I can see), or whether the = approach in =A73.4 (with the caveats noted above) is the best way = forward. Thanks for your consideration. r. From nobody Wed Jul 23 08:29:27 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1F0A41B28B3; Wed, 23 Jul 2014 08:29:21 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id benNjB410UHU; Wed, 23 Jul 2014 08:29:20 -0700 (PDT) Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 29E1B1B28B9; Wed, 23 Jul 2014 08:29:19 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: i-d-announce@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 5.6.2.p1 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <20140723152919.13772.78774.idtracker@ietfa.amsl.com> Date: Wed, 23 Jul 2014 08:29:19 -0700 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/ZMCRQTr-Fn8YUM4I9PWeKgwm51Q Cc: mpls@ietf.org Subject: [mpls] I-D Action: draft-ietf-mpls-deprecate-bgp-entropy-label-01.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Jul 2014 15:29:21 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF. Title : Deprecation of BGP Entropy Label Capability Attribute Authors : John G. Scudder Kireeti Kompella Filename : draft-ietf-mpls-deprecate-bgp-entropy-label-01.txt Pages : 4 Date : 2014-07-23 Abstract: RFC 6790 defines the BGP Entropy Label Capability attribute. Regrettably, it has a bug: although RFC 6790 mandates that Entropy Label-incapable routers must remove the attribute, in practice this requirement can't be guaranteed to be fulfilled. This specification deprecates the attribute. A forthcoming document will propose a replacement. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-deprecate-bgp-entropy-label/ There's also a htmlized version available at: http://tools.ietf.org/html/draft-ietf-mpls-deprecate-bgp-entropy-label-01 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-deprecate-bgp-entropy-label-01 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Wed Jul 23 08:34:22 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 659761B2821 for ; Wed, 23 Jul 2014 08:34:21 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.902 X-Spam-Level: X-Spam-Status: No, score=-1.902 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id GUwZZm0j9Tmj for ; Wed, 23 Jul 2014 08:34:16 -0700 (PDT) Received: from na01-bn1-obe.outbound.protection.outlook.com (mail-bn1blp0181.outbound.protection.outlook.com [207.46.163.181]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 6D7F01B284B for ; Wed, 23 Jul 2014 08:34:13 -0700 (PDT) Received: from unaeem-sslvpn-nc.jnpr.net (66.129.239.11) by BY2PR05MB727.namprd05.prod.outlook.com (10.141.223.23) with Microsoft SMTP Server (TLS) id 15.0.995.14; Wed, 23 Jul 2014 15:34:10 +0000 Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) From: "John G. Scudder" In-Reply-To: <20140723152919.13772.78774.idtracker@ietfa.amsl.com> Date: Wed, 23 Jul 2014 11:34:03 -0400 Content-Transfer-Encoding: quoted-printable Message-ID: <9CCAB76D-BAC8-4ADD-8F0A-7DAB53194448@juniper.net> References: <20140723152919.13772.78774.idtracker@ietfa.amsl.com> To: X-Mailer: Apple Mail (2.1878.6) X-Originating-IP: [66.129.239.11] X-ClientProxiedBy: BY2PR03CA044.namprd03.prod.outlook.com (10.141.249.17) To BY2PR05MB727.namprd05.prod.outlook.com (10.141.223.23) X-Microsoft-Antispam: BCL:0;PCL:0;RULEID: X-Forefront-PRVS: 028166BF91 X-Forefront-Antispam-Report: SFV:NSPM; SFS:(6009001)(24454002)(51704005)(377424004)(199002)(189002)(377454003)(164054003)(47776003)(81542001)(53416004)(106356001)(76176999)(110136001)(2351001)(46406003)(80022001)(77096002)(89996001)(86362001)(88136002)(20776003)(81342001)(15202345003)(102836001)(64706001)(97756001)(85306003)(95666004)(105586002)(81156004)(42186005)(101416001)(107046002)(50466002)(83716003)(77156001)(87976001)(104166001)(33656002)(31966008)(4396001)(99396002)(15975445006)(82746002)(69596002)(74662001)(50226001)(74502001)(79102001)(19580395003)(50986999)(92566001)(85852003)(36756003)(76482001)(23726002)(19580405001)(92726001)(77982001)(87286001)(83072002)(83322001)(46102001)(93916002)(57306001)(66066001)(21056001)(62966002)(104396001)(42262001); DIR:OUT; SFP:; SCL:1; SRVR:BY2PR05MB727; H:unaeem-sslvpn-nc.jnpr.net; FPR:; MLV:sfv; PTR:InfoNoRecords; MX:1; LANG:en; X-OriginatorOrg: juniper.net Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/zkq4-lr__5y7pet16pzCEqeZxWY Cc: mpls-chairs@tools.ietf.org Subject: Re: [mpls] I-D Action: draft-ietf-mpls-deprecate-bgp-entropy-label-01.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Jul 2014 15:34:21 -0000 This version is explicit about what it means to be "deprecated" since = history shows not everyone has the same understanding of the term. = Otherwise unchanged. Chairs, can we WGLC this draft? Thanks, --John On Jul 23, 2014, at 11:29 AM, internet-drafts@ietf.org wrote: >=20 > A New Internet-Draft is available from the on-line Internet-Drafts = directories. > This draft is a work item of the Multiprotocol Label Switching Working = Group of the IETF. >=20 > Title : Deprecation of BGP Entropy Label Capability = Attribute > Authors : John G. Scudder > Kireeti Kompella > Filename : = draft-ietf-mpls-deprecate-bgp-entropy-label-01.txt > Pages : 4 > Date : 2014-07-23 >=20 > Abstract: > RFC 6790 defines the BGP Entropy Label Capability attribute. > Regrettably, it has a bug: although RFC 6790 mandates that Entropy > Label-incapable routers must remove the attribute, in practice this > requirement can't be guaranteed to be fulfilled. This specification > deprecates the attribute. A forthcoming document will propose a > replacement. >=20 >=20 > The IETF datatracker status page for this draft is: > = https://datatracker.ietf.org/doc/draft-ietf-mpls-deprecate-bgp-entropy-lab= el/ >=20 > There's also a htmlized version available at: > = http://tools.ietf.org/html/draft-ietf-mpls-deprecate-bgp-entropy-label-01 >=20 > A diff from the previous version is available at: > = http://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-mpls-deprecate-bgp-entropy-l= abel-01 >=20 >=20 > Please note that it may take a couple of minutes from the time of = submission > until the htmlized version and diff are available at tools.ietf.org. >=20 > Internet-Drafts are also available by anonymous FTP at: > ftp://ftp.ietf.org/internet-drafts/ From nobody Wed Jul 23 08:50:57 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id CAC191A040C for ; Wed, 23 Jul 2014 08:50:53 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id WbgmktHYWWMv for ; Wed, 23 Jul 2014 08:50:52 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id BAD471A0373 for ; Wed, 23 Jul 2014 08:50:52 -0700 (PDT) Received: from [31.133.165.202] (dhcp-a5ca.meeting.ietf.org [31.133.165.202]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id E634918013DA; Wed, 23 Jul 2014 17:50:50 +0200 (CEST) Message-ID: <53CFD9E4.1040809@pi.nu> Date: Wed, 23 Jul 2014 17:51:00 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls@ietf.org" Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/2I1FnwbsK3CcE1Y4DjI5YrcGpXs Cc: "mpls-chairs@tools.ietf.org" , draft-ietf-mpls-deprecate-bgp-entropy-label@tools.ietf.org Subject: [mpls] working group last draft-ietf-mpls-deprecate-bgp-entropy-label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Jul 2014 15:50:53 -0000 Working Group, This is to initiate a two week working group last call on draft-ietf-mpls-deprecate-bgp-entropy-label-01. Please send your comments to the mpls wg mailing list (mpls@ietf.org). There are no IPR disclosures against this document. The authors have stated that they are unware of any IPRs related to this document. This working group last call ends August 6, 2014. /Loa for the MPLS wg chairs -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Wed Jul 23 09:04:58 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 293421B2AE0 for ; Wed, 23 Jul 2014 09:04:57 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Hat9lZ1DXR1t for ; Wed, 23 Jul 2014 09:04:52 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D99E31B2936 for ; Wed, 23 Jul 2014 09:04:51 -0700 (PDT) Received: from [31.133.165.202] (dhcp-a5ca.meeting.ietf.org [31.133.165.202]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 3687318013DA; Wed, 23 Jul 2014 18:04:50 +0200 (CEST) Message-ID: <53CFDD2B.8050508@pi.nu> Date: Wed, 23 Jul 2014 18:04:59 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls@ietf.org" Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/nUguqCg03449bem621ppHZKQoGk Cc: "mpls-chairs@tools.ietf.org" Subject: [mpls] English review of MPLS wg documents X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Jul 2014 16:04:57 -0000 Working Group, We have been aware of that some documents would benefit from an English review before we request publication or even before the wglc. We have done an English review of one document, the experience is very good. We now would like to have authors/editors to volunteer their documents for this type of review. We would also need to have volunteer reviewers, please tell the wg chairs if you are willing to be an English language reviewer. We has asked this before so if you already volunteered we should have your name listed. /Loa -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Wed Jul 23 10:00:17 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 916231B2822 for ; Wed, 23 Jul 2014 10:00:16 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id XPTM6XKe_aHu for ; Wed, 23 Jul 2014 10:00:15 -0700 (PDT) Received: from relais-inet.francetelecom.com (relais-ias245.francetelecom.com [80.12.204.245]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B81B81B27FB for ; Wed, 23 Jul 2014 10:00:14 -0700 (PDT) Received: from omfeda06.si.francetelecom.fr (unknown [xx.xx.xx.199]) by omfeda14.si.francetelecom.fr (ESMTP service) with ESMTP id E1D2E2AE175; Wed, 23 Jul 2014 19:00:12 +0200 (CEST) Received: from Exchangemail-eme1.itn.ftgroup (unknown [10.114.1.186]) by omfeda06.si.francetelecom.fr (ESMTP service) with ESMTP id C5FF1C804F; Wed, 23 Jul 2014 19:00:12 +0200 (CEST) Received: from PEXCVZYM11.corporate.adroot.infra.ftgroup ([fe80::a441:e6a9:6143:6f0f]) by PEXCVZYH01.corporate.adroot.infra.ftgroup ([::1]) with mapi id 14.03.0181.006; Wed, 23 Jul 2014 19:00:12 +0200 From: To: Loa Andersson , "mpls-chairs@tools.ietf.org" Thread-Topic: [mpls] working group last draft-ietf-mpls-deprecate-bgp-entropy-label Thread-Index: AQHPpo3oXMFulfoJjUKHOv75Jovrz5ut4a1g Date: Wed, 23 Jul 2014 17:00:12 +0000 Message-ID: <17600_1406134812_53CFEA1C_17600_13133_2_53C29892C857584299CBF5D05346208A0718F56A@PEXCVZYM11.corporate.adroot.infra.ftgroup> References: <53CFD9E4.1040809@pi.nu> In-Reply-To: <53CFD9E4.1040809@pi.nu> Accept-Language: fr-FR, en-US Content-Language: fr-FR X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.197.38.4] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-PMX-Version: 6.0.3.2322014, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2014.7.23.121216 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/BHvbGgoX-5mzx2cNlKadSCuVGog Cc: "mpls@ietf.org" , "draft-ietf-mpls-deprecate-bgp-entropy-label@tools.ietf.org" Subject: Re: [mpls] working group last draft-ietf-mpls-deprecate-bgp-entropy-label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Jul 2014 17:00:16 -0000 Hi all, > This is to initiate a two week working group last call on draft-ietf-mpls- > deprecate-bgp-entropy-label-01. Read & support. Thanks, Bruno > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Loa Andersson > Sent: Wednesday, July 23, 2014 11:51 AM >=20 > Working Group, >=20 > This is to initiate a two week working group last call on draft-ietf-mpls- > deprecate-bgp-entropy-label-01. >=20 > Please send your comments to the mpls wg mailing list (mpls@ietf.org). >=20 > There are no IPR disclosures against this document. The authors have stat= ed > that they are unware of any IPRs related to this document. >=20 > This working group last call ends August 6, 2014. >=20 > /Loa > for the MPLS wg chairs > -- >=20 >=20 > Loa Andersson email: loa@mail01.huawei.com > Senior MPLS Expert loa@pi.nu > Huawei Technologies (consultant) phone: +46 739 81 21 64 >=20 > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls ___________________________________________________________________________= ______________________________________________ Ce message et ses pieces jointes peuvent contenir des informations confiden= tielles ou privilegiees et ne doivent donc pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu= ce message par erreur, veuillez le signaler a l'expediteur et le detruire ainsi que les pieces jointes. Les messages el= ectroniques etant susceptibles d'alteration, Orange decline toute responsabilite si ce message a ete altere, deforme ou = falsifie. Merci. This message and its attachments may contain confidential or privileged inf= ormation that may be protected by law; they should not be distributed, used or copied without authorisation. If you have received this email in error, please notify the sender and dele= te this message and its attachments. As emails may be altered, Orange is not liable for messages that have been = modified, changed or falsified. Thank you. From nobody Wed Jul 23 10:54:42 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 41AE41A0158; Wed, 23 Jul 2014 10:54:32 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PQAk3lm-JBYW; Wed, 23 Jul 2014 10:54:31 -0700 (PDT) Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 0E97E1B28FB; Wed, 23 Jul 2014 10:54:26 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: i-d-announce@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 5.6.2.p1 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <20140723175426.16156.82475.idtracker@ietfa.amsl.com> Date: Wed, 23 Jul 2014 10:54:26 -0700 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/rd4RJ5Uw6j1CfoPq7m9k4L0q0iw Cc: mpls@ietf.org Subject: [mpls] I-D Action: draft-ietf-mpls-ipv6-only-gap-01.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Jul 2014 17:54:32 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF. Title : Gap Analysis for Operating IPv6-only MPLS Networks Authors : Wesley George Carlos Pignataro Filename : draft-ietf-mpls-ipv6-only-gap-01.txt Pages : 24 Date : 2014-07-23 Abstract: This document reviews the MPLS protocol suite in the context of IPv6 and identifies gaps that must be addressed in order to allow MPLS- related protocols and applications to be used with IPv6-only networks. This document is not intended to highlight a particular vendor's implementation (or lack thereof) in the context of IPv6-only MPLS functionality, but rather to focus on gaps in the standards defining the MPLS suite. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-ipv6-only-gap/ There's also a htmlized version available at: http://tools.ietf.org/html/draft-ietf-mpls-ipv6-only-gap-01 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-ipv6-only-gap-01 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Wed Jul 23 14:56:32 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 752A81B298A; Wed, 23 Jul 2014 14:56:21 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id SJ-jbZg0Dmx4; Wed, 23 Jul 2014 14:56:18 -0700 (PDT) Received: from cappuccino.rob.sh (cappuccino.rob.sh [IPv6:2a03:9800:10:4c::cafe:b00c]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 252551B296A; Wed, 23 Jul 2014 14:56:16 -0700 (PDT) Received: from [2001:67c:370:160:4829:75c5:89d3:ef33] (helo=wireless-v6.meeting.ietf.org) by cappuccino.rob.sh with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1XA4WE-0005fA-3K; Wed, 23 Jul 2014 22:56:14 +0100 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Content-Type: text/plain; charset=windows-1252 From: Rob Shakir In-Reply-To: <31D9512C-04FF-4BE3-866F-F7522BA78EC0@juniper.net> Date: Wed, 23 Jul 2014 17:56:09 -0400 Content-Transfer-Encoding: quoted-printable Message-Id: References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <31D9512C-04FF-4BE3-866F-F7522BA78EC0@juniper.net> To: Kireeti Kompella X-Mailer: Apple Mail (2.1878.6) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/IBYpj65RCocntTP5hubAWll7NwY Cc: mpls@ietf.org, "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Jul 2014 21:56:22 -0000 Hi Kireeti, (Responding on-list for completeness - and a reminder to myself.) On 23 Jul 2014, at 12:54, Kireeti Kompella wrote: >> - I feel that it would be useful to provide some clarification as to = where we >> expect entropy to be required for load-sharing in the draft. >=20 > There are three questions hiding here: > 1) is ECMP needed with MPLS SPRING (in particular, Adj-SID)? > Valid question, as ECMP wasn't seen at first as necessary with = RSVP-TE, which shares intent with Adj-SID. I'd say the answer is Yes. = You give an example of why; analogies from the multi path RSVP draft can = also be used.=20 >=20 > 2) is EL the way to achieve ECMP with MPLS SPRING? > I sincerely hope so; having two mechanisms in MPLS to enable ECMP = wouldn't be ideal. But I won't rule out other ways.=20 >=20 > [Your point is taken: laying out (1) and (2) more clearly would help = the draft.] rjs> I agree with both points. Let me work to contribute some material = to expand on the couple of points I raised following the meeting this = week. >=20 > 3) Given Yeses to (1) and (2), how? > That's the current focus of the draft. This part is for now an = exploration. I agree that at some point, we have to narrow the options = down to a few (ideally one). This would be an action for vendors, = knowing their chips, and providers, knowing their requirements to sit = together and work it out.=20 >=20 > There is an aspect of the draft that hasn't come out, which is along = the lines of the MPLS forwarding draft, soon to be an RFC: what is the = best way in the future, given the requirements of SPRING and EL? I.e., = if you built new chips today, knowing what we know, which option would = you choose? Getting a sense of that would help the community to come to = a common choice for the future -- as someone mentioned, today's = choices/compromises may end up varying widely vendor-to-vendor.=20 rjs> Agreed =97 if we can determine whether we think that the list of = options is complete following the exercise of solving (1) and (2), then = perhaps we can start to address these questions and try to conclude the = discussions at the next meeting. Cheers, r. From nobody Thu Jul 24 00:21:41 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 89E591A00AA; Thu, 24 Jul 2014 00:21:36 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.277 X-Spam-Level: X-Spam-Status: No, score=-1.277 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FM_FORGED_GMAIL=0.622, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6z6oQNZlDj9F; Thu, 24 Jul 2014 00:21:35 -0700 (PDT) Received: from mail-ig0-x233.google.com (mail-ig0-x233.google.com [IPv6:2607:f8b0:4001:c05::233]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id DA90E1A0059; Thu, 24 Jul 2014 00:21:34 -0700 (PDT) Received: by mail-ig0-f179.google.com with SMTP id h18so2362371igc.0 for ; Thu, 24 Jul 2014 00:21:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=Cn2fio7tZZgluc7xDITZv/JKWnsQ4zTW/AcHCxlwJD4=; b=CrcOUN1o3XMGt54gDQde2HLk+sLq5lItmajuwT6s8TwMsP763Hhi1I8jo7HeuqCehc U3PD8khkHUZQ6oPjLjNp05oaPwoUNc7OcH0k0pD++ZuL3A9+g0R8PjYroke30i55Rl6c 5JWF4A/LWjGrHD+KFVdcFC4+7NQvuY9Ihs3QAKjRf2WBELwkUJCm/Wxf1WIVG0+ryR57 s2nEYxi/ngHKC5ySfKWXxkwkNb6la86efsnYYbsjl/eDxyxb8UY2A2gXq3n2cuI6yz3d oqOKK/WSsxWPM/Nvv7dOG0Ro7dQyZm8x37I/sjDx8jLqdFwzfIJ8VVVPHo7clULqHGvl MJsg== MIME-Version: 1.0 X-Received: by 10.42.64.77 with SMTP id f13mr1242459ici.72.1406186492914; Thu, 24 Jul 2014 00:21:32 -0700 (PDT) Sender: rraszuk@gmail.com Received: by 10.64.128.99 with HTTP; Thu, 24 Jul 2014 00:21:32 -0700 (PDT) In-Reply-To: References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> Date: Thu, 24 Jul 2014 09:21:32 +0200 X-Google-Sender-Auth: OxzK0mCgixd5SlXHVwqUdzzNeY0 Message-ID: From: Robert Raszuk To: "Ruediger.Geib@telekom.de Geib" Content-Type: multipart/alternative; boundary=90e6ba614c6465f3fa04feeb4ee3 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/pFLeIdvy2rA-rGzhoJhO6Vi3gQA Cc: "mpls@ietf.org" , "spring@ietf.org" , draft-kini-mpls-spring-entropy-label@tools.ietf.org Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 07:21:36 -0000 --90e6ba614c6465f3fa04feeb4ee3 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable All, Observing this discussion I have a question why the draft as well as this discussion is only limited to one solution for efficient load balancing across parallel links in the network - namely entropy labels ? Let's observe that unlike in general MPLS label allocation per FEC in SPRING labels are allocated per much more contained number of segment node properties. Therefor an alternative of using any form of entropy labels in data plane all together would be to allocate a SID blocks (say 64 or 128 wide) and allow SPRING header imposition to use such pools of SIDs per group of flows to effectively allow for efficient load balancing in the network. Moreover this solution does not put any additional requirements on MPLS hardware and can be easily supported today by most of shipping routers. Best, r. On Thu, Jul 24, 2014 at 8:31 AM, wrote: > Hi Rob, > > I agree, a single ELI/EL deeper in the stack as proposed by =C2=A73.1 is = the > most useful target solution also from my point of view. > > Regards, > > Ruediger > > -----Message----- > From: spring [mailto:spring-bounces@ietf.org] Rob Shakir > > Hi Sri! > > [snip] > > rjs> Addressing the final goal - as per Stephane's comments - I would lik= e > to recommend that we specify =C2=A73.1 as the target option (such that we= have a > single ELI/EL deeper in the stack) as the "ideal" option. It then seems t= o > me that a debate as to whether the forwarding behaviour in =C2=A73.3 is p= ossible > with most h/w today (both mean that either we change the number of > operations that are required on a forwarding device when popping/swapping > labels as far as I can see), or whether the approach in =C2=A73.4 (with t= he > caveats noted above) is the best way forward. > > Thanks for your consideration. > r. > > > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring > > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring > --90e6ba614c6465f3fa04feeb4ee3 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
All,

Observing this discussion I have a question why the draft as well as this d= iscussion is only limited to one solution for efficient load balancing acro= ss parallel links in the network - namely entropy labels ?=C2=A0

Let's observe that unlike in general MPLS label= allocation per FEC in SPRING labels are allocated per much more contained = number of segment node properties.=C2=A0

Therefor an alternative of using any = form of entropy labels in data plane all together would be to allocate a SI= D blocks (say 64 or 128 wide) and allow SPRING header imposition to use suc= h pools of SIDs per group of flows to effectively allow for efficient load = balancing in the network.

Moreover this solution does not put a= ny additional requirements on MPLS hardware and can be easily supported tod= ay by most of shipping routers.=C2=A0

Best,
r.



On Thu, Jul 24, 2014 at 8:31 AM, <Ruedige= r.Geib@telekom.de> wrote:
Hi Rob,

I agree, a single ELI/EL deeper in the stack as proposed by =C2=A73.1 is th= e most useful target solution also from my point of view.

Regards,

Ruediger

-----Message-----
From: spring [mailto:spring-boun= ces@ietf.org] Rob Shakir

Hi Sri!

[snip]

rjs> Addressing the final goal - as per Stephane's comments - I woul= d like to recommend that we specify =C2=A73.1 as the target option (such th= at we have a single ELI/EL deeper in the stack) as the "ideal" op= tion. It then seems to me that a debate as to whether the forwarding behavi= our in =C2=A73.3 is possible with most h/w today (both mean that either we = change the number of operations that are required on a forwarding device wh= en popping/swapping labels as far as I can see), or whether the approach in= =C2=A73.4 (with the caveats noted above) is the best way forward.

Thanks for your consideration.
r.


_______________________________________________
spring mailing list
spring@ietf.org
= https://www.ietf.org/mailman/listinfo/spring

_______________________________________________
spring mailing list
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--90e6ba614c6465f3fa04feeb4ee3-- From nobody Thu Jul 24 03:35:09 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 27FAA1A0185; Thu, 24 Jul 2014 03:35:08 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id KdABWMS5Cqav; Thu, 24 Jul 2014 03:35:06 -0700 (PDT) Received: from rcdn-iport-8.cisco.com (rcdn-iport-8.cisco.com [173.37.86.79]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 503C71A0196; Thu, 24 Jul 2014 03:35:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3020; q=dns/txt; s=iport; t=1406198107; x=1407407707; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=ME+Fej6kWLbo4bPqPl5OK00Kc4fBL4AbJyQdpNLDXSc=; b=IiqoLPTbAfQIwxF4aREwbAb1L/81tKxJRskmQvvOpXoGysdH96EjvJBA nhMgZI//aJ+uu6sa2pcgtJmWOd3+Ba/51VPMERQXFvbVQZbnbgg6E6M4R HNll60bLSkGqOdF3wEayptPGGuGPbrjsoRYz6hITHt8bBdPrLbmLWGAe/ g=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AhgFAIDg0FOtJV2c/2dsb2JhbABZgw6BKQTQWAGBCxZ3hAMBAQEEeRACAQgRBAEBCx0HMhQJCAEBBAENBQiIOsATF45zJzEHgy6BGAWKL4xlmGGDSGyBAwc7 X-IronPort-AV: E=Sophos;i="5.01,723,1400025600"; d="scan'208";a="342494458" Received: from rcdn-core-5.cisco.com ([173.37.93.156]) by rcdn-iport-8.cisco.com with ESMTP; 24 Jul 2014 10:35:06 +0000 Received: from xhc-aln-x15.cisco.com (xhc-aln-x15.cisco.com [173.36.12.89]) by rcdn-core-5.cisco.com (8.14.5/8.14.5) with ESMTP id s6OAZ5cr011801 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Thu, 24 Jul 2014 10:35:05 GMT Received: from xmb-rcd-x15.cisco.com ([169.254.5.202]) by xhc-aln-x15.cisco.com ([173.36.12.89]) with mapi id 14.03.0123.003; Thu, 24 Jul 2014 05:35:05 -0500 From: "Vengada Prasad Govindan (venggovi)" To: Gregory Mirsky , "mpls@ietf.org" Thread-Topic: BFD Directed Path discussion Thread-Index: Ac+l26e8a77RkgmdSoKSZ/ImmV7YPAA91X3w Date: Thu, 24 Jul 2014 10:35:05 +0000 Message-ID: <315041E4211CB84E86EF7C25A2AB583D34639107@xmb-rcd-x15.cisco.com> References: <7347100B5761DC41A166AC17F22DF1121B7F279F@eusaamb103.ericsson.se> In-Reply-To: <7347100B5761DC41A166AC17F22DF1121B7F279F@eusaamb103.ericsson.se> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.244.137] Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/3_yCv8NnR1cOYRGTTi7zfDAMwvM Cc: "rtg-bfd@ietf.org" Subject: Re: [mpls] BFD Directed Path discussion X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 10:35:08 -0000 Hello Greg, Thanks for your note, a couple of clarifications here: >how this work is related to Extended BFD Discriminator TLV work? Both may = be complementary, especially as parts of controlling BFD >session. Would we= lcome authors of Extended BFD Discriminator TLV to discussion and review dr= aft-ietf-ccamp-rsvp-te-mpls-tp-oam-ext >and draft-ietf-mpls-lsp-ping-mpls-t= p-oam-conf drafts (authors are planning to bring them over the finish line) a. Are you suggesting that we add sub-TLVs to convey the instance identifie= r [1] inside the BFD configuration sub-TLV of both MPLS LSP ping [2] and th= e RSVP TE OAM [3] messages? b. Are you considering the addition of BFD reverse-path TLV [4] as well to = the LSP ping and RSVP-TE OAM messages?=20 Thanks Prasad [1] draft-vgovindan-mpls-extended-bfd-disc-tlv [2] draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-06 [3] draft-ietf-ccamp-rsvp-te-mpls-tp-oam-ext-12 [4] draft-mirsky-mpls-bfd-directed-00 From: Rtg-bfd [mailto:rtg-bfd-bounces@ietf.org] On Behalf Of Gregory Mirsky Sent: Wednesday, July 23, 2014 12:27 AM To: mpls@ietf.org Cc: rtg-bfd@ietf.org Subject: BFD Directed Path discussion Dear All, on behalf of the authors of this work I thank you all who participated in t= he discussions Monday (BFD WG) and today (MPLS WG). Great comments and sugg= estions - very excited by your interest in this work. I've tried to capture summary of the comments and sketch possible ways to a= ddress these: . BFD Return Path TLV suitable for RFC 5880, what about S-BFD? In order to maintain stateless character of S-BFDReflector, S-BFD control p= acket may need to carry return path information. Need to discuss with autho= rs of S-BFD Base and start work on S-BFD over MPLS LSP with IP and ACH enca= psulations; . What would happen if Return Path conveyed to the far-end BFD peer is not = available? Ingress may send another BFD Return Path in its TLV along with t= he same BFD Discriminator; . Can BFD Echo of RFC 5880 be used in conjunction with the BFD Return Path = TLV over MPLS LSP? It may be interesting as BFD Echo already allows for a p= ayload but work on proper handling and encapsulations of BFD Echo is needed= . Besides, use of BFD Echo over MPLS LSP may be limited to single segment L= SPs thus S-BFD may be more generic mechanism to have stateless far-end BFD = peer; . how this work is related to Extended BFD Discriminator TLV work? Both may= be complementary, especially as parts of controlling BFD session. Would we= lcome authors of Extended BFD Discriminator TLV to discussion and review dr= aft-ietf-ccamp-rsvp-te-mpls-tp-oam-ext and draft-ietf-mpls-lsp-ping-mpls-tp= -oam-conf drafts (authors are planning to bring them over the finish line) Please excuse me if I've missed your question and please add it to this dis= cussion. =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 Regards, =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0 Greg From nobody Thu Jul 24 04:48:26 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 649CD1A01DC; Thu, 24 Jul 2014 04:48:23 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.899 X-Spam-Level: X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id cvBUJvIKxVkS; Thu, 24 Jul 2014 04:48:20 -0700 (PDT) Received: from relais-inet.francetelecom.com (relais-ias92.francetelecom.com [193.251.215.92]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 91FF21A017E; Thu, 24 Jul 2014 04:48:20 -0700 (PDT) Received: from omfedm08.si.francetelecom.fr (unknown [xx.xx.xx.4]) by omfedm09.si.francetelecom.fr (ESMTP service) with ESMTP id A9D172DCEEF; Thu, 24 Jul 2014 13:48:16 +0200 (CEST) Received: from Exchangemail-eme2.itn.ftgroup (unknown [10.114.31.55]) by omfedm08.si.francetelecom.fr (ESMTP service) with ESMTP id 80914238055; Thu, 24 Jul 2014 13:48:13 +0200 (CEST) Received: from OPEXCLILM34.corporate.adroot.infra.ftgroup ([169.254.4.91]) by OPEXCLILH03.corporate.adroot.infra.ftgroup ([10.114.31.55]) with mapi id 14.03.0181.006; Thu, 24 Jul 2014 13:48:13 +0200 From: To: Rob Shakir , Kireeti Kompella Thread-Topic: [spring] SPRING MPLS and Entropy Label Thread-Index: AQHPpPGzFOMOyOFpYEWM2i7SQsHvQpuuOA3bgADm4LA= Date: Thu, 24 Jul 2014 11:48:12 +0000 Message-ID: <18048_1406202493_53D0F27D_18048_5436_1_9E32478DFA9976438E7A22F69B08FF9205C356@OPEXCLILM34.corporate.adroot.infra.ftgroup> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <31D9512C-04FF-4BE3-866F-F7522BA78EC0@juniper.net> In-Reply-To: Accept-Language: fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.168.234.3] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-PMX-Version: 6.0.3.2322014, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2014.7.24.40923 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/tPoX7wbbxena57CnImwNp1cpQvQ Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 11:48:23 -0000 IMHO, > 1) is ECMP needed with MPLS SPRING (in particular, Adj-SID)? Yes it is ... SPRING brings more flexibility in ECMP for TE tunnels than RS= VP-TE does. And ECMP with Bundle-Adj-SID is something really useful when a = Service Provider is using parallel ECMP links rather than LAGs. >2) is EL the way to achieve ECMP with MPLS SPRING? I would also agree that having two mechanism would be bad from an operation= al point of view. Entropy label is not new at IETF, but new in deployment (feature availabili= ty is something really recent). If SP that have deployed Entropy for loadba= lancing flows needs to move to something else for their SR-TE tunnels, well= ... sounds a bad thing ... Moreover entropy label has the magic of keeping loadbalancing stateless whi= ch is a pretty good advantage compared to adding more states at Ingress jus= t for loadbalancing. Stephane -----Original Message----- From: spring [mailto:spring-bounces@ietf.org] On Behalf Of Rob Shakir Sent: Wednesday, July 23, 2014 17:56 To: Kireeti Kompella Cc: mpls@ietf.org; spring@ietf.org; draft-kini-mpls-spring-entropy-label@to= ols.ietf.org Subject: Re: [spring] SPRING MPLS and Entropy Label Hi Kireeti, (Responding on-list for completeness - and a reminder to myself.) On 23 Jul 2014, at 12:54, Kireeti Kompella wrote: >> - I feel that it would be useful to provide some clarification as to=20 >> where we expect entropy to be required for load-sharing in the draft. >=20 > There are three questions hiding here: > 1) is ECMP needed with MPLS SPRING (in particular, Adj-SID)? > Valid question, as ECMP wasn't seen at first as necessary with RSVP-TE, w= hich shares intent with Adj-SID. I'd say the answer is Yes. You give an ex= ample of why; analogies from the multi path RSVP draft can also be used.=20 >=20 > 2) is EL the way to achieve ECMP with MPLS SPRING? > I sincerely hope so; having two mechanisms in MPLS to enable ECMP wouldn'= t be ideal. But I won't rule out other ways.=20 >=20 > [Your point is taken: laying out (1) and (2) more clearly would help=20 > the draft.] rjs> I agree with both points. Let me work to contribute some material to e= xpand on the couple of points I raised following the meeting this week. >=20 > 3) Given Yeses to (1) and (2), how? > That's the current focus of the draft. This part is for now an exploratio= n. I agree that at some point, we have to narrow the options down to a few = (ideally one). This would be an action for vendors, knowing their chips, an= d providers, knowing their requirements to sit together and work it out.=20 >=20 > There is an aspect of the draft that hasn't come out, which is along the = lines of the MPLS forwarding draft, soon to be an RFC: what is the best way= in the future, given the requirements of SPRING and EL? I.e., if you built= new chips today, knowing what we know, which option would you choose? Get= ting a sense of that would help the community to come to a common choice fo= r the future -- as someone mentioned, today's choices/compromises may end u= p varying widely vendor-to-vendor.=20 rjs> Agreed - if we can determine whether we think that the list of options= is complete following the exercise of solving (1) and (2), then perhaps we= can start to address these questions and try to conclude the discussions a= t the next meeting. Cheers, r. _______________________________________________ spring mailing list spring@ietf.org https://www.ietf.org/mailman/listinfo/spring ___________________________________________________________________________= ______________________________________________ Ce message et ses pieces jointes peuvent contenir des informations confiden= tielles ou privilegiees et ne doivent donc pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu= ce message par erreur, veuillez le signaler a l'expediteur et le detruire ainsi que les pieces jointes. Les messages el= ectroniques etant susceptibles d'alteration, Orange decline toute responsabilite si ce message a ete altere, deforme ou = falsifie. Merci. This message and its attachments may contain confidential or privileged inf= ormation that may be protected by law; they should not be distributed, used or copied without authorisation. 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From nobody Thu Jul 24 04:52:55 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id CCC0A1A023E; Thu, 24 Jul 2014 04:52:54 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -94.752 X-Spam-Level: X-Spam-Status: No, score=-94.752 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, CHARSET_FARAWAY_HEADER=3.2, J_CHICKENPOX_72=0.6, J_CHICKENPOX_91=0.6, MIME_8BIT_HEADER=0.3, MIME_CHARSET_FARAWAY=2.45, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id wkQnbVCUicho; Thu, 24 Jul 2014 04:52:49 -0700 (PDT) Received: from smtpeg.etri.re.kr (smtpeg2.etri.re.kr [129.254.27.142]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A23AB1A01DC; Thu, 24 Jul 2014 04:52:45 -0700 (PDT) Received: from SMTP3.etri.info (129.254.28.73) by SMTPEG2.etri.info (129.254.27.142) with Microsoft SMTP Server (TLS) id 14.1.355.2; Thu, 24 Jul 2014 20:52:44 +0900 Received: from SMTP2.etri.info ([169.254.2.160]) by SMTP3.etri.info ([10.2.6.32]) with mapi id 14.01.0355.002; Thu, 24 Jul 2014 20:52:38 +0900 From: =?ks_c_5601-1987?B?t/nBpLW/?= To: Lou Berger , Yaacov Weingarten Thread-Topic: [RTG-DIR] [mpls] RtgDir review: draft-ietf-mpls-smp-requirements-06.txt Thread-Index: AQHPjWn3yaQ2bqHMa0u/oexBdb3lpJuPKTU+gAI5dwCAG8haAIACIb8i Date: Thu, 24 Jul 2014 11:52:37 +0000 Message-ID: <5B4A6CBE3924BB41A3BEE462A8E0B75A2874CF28@SMTP2.etri.info> References: <53A5ABED.9080408@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28748144@SMTP2.etri.info> , <53CFA4FC.3080304@labn.net> In-Reply-To: <53CFA4FC.3080304@labn.net> Accept-Language: ko-KR, en-US Content-Language: ko-KR X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [129.254.26.37] Content-Type: text/plain; charset="ks_c_5601-1987" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/Yd3Y13URGDS0wJT5ypRiD27A1c0 Cc: "mpls@ietf.org" , "draft-ietf-mpls-smp-requirements.all@tools.ietf.org" , "rtg-dir@ietf.org" , "rtg-ads@tools.ietf.org" Subject: [mpls] =?euc-kr?b?yLi9xTogW1JURy1ESVJdICBSdGdEaXIgcmV2aWV3OiBk?= =?euc-kr?q?raft-ietf-mpls-smp-requirements-06=2Etxt?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 11:52:55 -0000 TG91LA0KDQpBbnkgYW1iaWd1aXR5IGlzIG5vdCBpbnRlbnRpb25hbC4NCg0KVGhlIGxhdGVzdCB0 ZXh0IHJlbGF0ZWQgdG8gdGhpcyBpc3N1ZSBpczoNCi0tLSANCiAgIDMuIElmIG11bHRpcGxlIHBy b3RlY3Rpb24gcGF0aHMgb2YgZXF1YWwgcHJpb3JpdHkgYXJlIHJlcXVlc3RpbmcgdGhlDQogICAg 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nobody Thu Jul 24 05:13:04 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id EA6C51A024C; Thu, 24 Jul 2014 05:13:01 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2o76-71zFTKk; Thu, 24 Jul 2014 05:12:55 -0700 (PDT) Received: from na01-bn1-obe.outbound.protection.outlook.com (mail-bn1blp0187.outbound.protection.outlook.com [207.46.163.187]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 4E5901A023F; Thu, 24 Jul 2014 05:12:55 -0700 (PDT) Received: from CO2PR05MB554.namprd05.prod.outlook.com (10.141.196.141) by CO2PR05MB555.namprd05.prod.outlook.com (10.141.196.147) with Microsoft SMTP Server (TLS) id 15.0.990.7; Thu, 24 Jul 2014 12:12:53 +0000 Received: from CO2PR05MB554.namprd05.prod.outlook.com ([10.141.196.141]) by CO2PR05MB554.namprd05.prod.outlook.com ([10.141.196.141]) with mapi id 15.00.0990.007; Thu, 24 Jul 2014 12:12:53 +0000 From: Kireeti Kompella To: Robert Raszuk Thread-Topic: [spring] SPRING MPLS and Entropy Label Thread-Index: AQHPpPGtdeX4OzxQjUOfPirMD2dZoZutOAAAgACS5QCAAP0cgIAADeUAgABRYwA= Date: Thu, 24 Jul 2014 12:12:52 +0000 Message-ID: <083ECD6F-D7B5-4AFC-8066-19BD2B7E563B@juniper.net> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [66.129.241.10] x-microsoft-antispam: BCL:0;PCL:0;RULEID: x-forefront-prvs: 028256169F x-forefront-antispam-report: SFV:NSPM; SFS:(189002)(199002)(24454002)(16236675004)(105586002)(76176999)(83716003)(106356001)(107046002)(31966008)(83072002)(99286002)(33656002)(74502001)(99396002)(76482001)(74662001)(92566001)(93886003)(54356999)(92726001)(95666004)(46102001)(36756003)(50986999)(106116001)(81542001)(81342001)(19580405001)(19580395003)(20776003)(87936001)(64706001)(80022001)(101416001)(85852003)(21056001)(86362001)(66066001)(85306003)(77982001)(83322001)(82746002)(2656002)(110136001)(79102001)(4396001)(104396001)(217873001); DIR:OUT; SFP:; SCL:1; SRVR:CO2PR05MB555; H:CO2PR05MB554.namprd05.prod.outlook.com; FPR:; MLV:sfv; PTR:InfoNoRecords; MX:1; LANG:en; Content-Type: multipart/alternative; boundary="_000_083ECD6FD7B54AFC806619BD2B7E563Bjunipernet_" MIME-Version: 1.0 X-OriginatorOrg: juniper.net Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/-lmrzuwojMieLN0LFdXli59rR3Q Cc: Kireeti Kompella , "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 12:13:02 -0000 --_000_083ECD6FD7B54AFC806619BD2B7E563Bjunipernet_ Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Hi Robert, On Jul 24, 2014, at 03:21 , Robert Raszuk > wrote: Therefor an alternative of using any form of entropy labels in data plane a= ll together would be to allocate a SID blocks (say 64 or 128 wide) and allo= w SPRING header imposition to use such pools of SIDs per group of flows to = effectively allow for efficient load balancing in the network. We=92re rehashing (pun unintended) the entropy label discussion. Before we settled on entropy labels the way we did, we discussed advertisin= g label blocks in LDP. There are two problems: a) as Stephane mentions, ELs are stateless, but pools of SIDs impose more s= tate in the forwarding plane (and to some extent, in the control plane). b) if you use small blocks, you get uneven load balancing; if you use large= blocks, you blow up the state more. Kireeti --_000_083ECD6FD7B54AFC806619BD2B7E563Bjunipernet_ Content-Type: text/html; charset="Windows-1252" Content-ID: <94F8B6CA72843B4ABD649D698F80A3E1@namprd05.prod.outlook.com> Content-Transfer-Encoding: quoted-printable Hi Robert,

On Jul 24, 2014, at 03:21 , Robert Raszuk <robert@raszuk.net> wrote:

Therefor an alternative of using any form of entropy labels in data plane a= ll together would be to allocate a SID blocks (say 64 or 128 wide) and allo= w SPRING header imposition to use such pools of SIDs per group of flows to = effectively allow for efficient load balancing in the network.

We=92re rehashing (pun unintended) the entropy label discussion.

Before we settled on entropy labels the way we did, we discussed adver= tising label blocks in LDP.  There are two problems:
a) as Stephane mentions, ELs are stateless, but pools of SIDs impose m= ore state in the forwarding plane (and to some extent, in the control plane= ).
b) if you use small blocks, you get uneven load balancing; if you use = large blocks, you blow up the state more.

Kireeti

--_000_083ECD6FD7B54AFC806619BD2B7E563Bjunipernet_-- From nobody Thu Jul 24 05:16:28 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E504C1A0250; Thu, 24 Jul 2014 05:16:26 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id jYiF181UHj4E; Thu, 24 Jul 2014 05:16:22 -0700 (PDT) Received: from mail-qa0-x232.google.com (mail-qa0-x232.google.com [IPv6:2607:f8b0:400d:c00::232]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 9DA121A0202; Thu, 24 Jul 2014 05:16:22 -0700 (PDT) Received: by mail-qa0-f50.google.com with SMTP id s7so2797783qap.23 for ; Thu, 24 Jul 2014 05:16:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=content-type:mime-version:subject:from:in-reply-to:date:cc :message-id:references:to; bh=kXYpzMZOIM/0al/yfKnFAqo1ANGAG/rXdaE3S8nSSt4=; b=HKpQkKCr8ml99gsdTlkJ/gtVJg++7ZMCaFC+Kd0Dt2zx3IFQ0j2Cl/0L6i4S/fR4Th tXVwNHQKifKwGkXUnxsbTYp2aWP8Fr7yjUspoHDg7Zd8ie2yQbamwfYbhkgRagnu+7dD dzD+OsR6RCUceVQV6+b/kxeOIriLKjhWff0/WaWjiw2uxXRAiX6vm0+zLHWf/sVGYNFl A+p8RDW/LPCBUJqp4CRhWTNJJoM1C5tGMfFjyWVScLpYRU49t/hewprxP9au0XA/CtUh v7FIhyp9aiHWuh8GyJ1fOiOlWHq3WS2+fHSvuOHzAjqprDf23CA90lug3J9MSvGiO39Q O2Nw== X-Received: by 10.224.30.139 with SMTP id u11mr13180337qac.77.1406204181557; Thu, 24 Jul 2014 05:16:21 -0700 (PDT) Received: from ohassanali-sslvpn-nc.jnpr.net ([66.129.241.10]) by mx.google.com with ESMTPSA id k6sm6928416qge.2.2014.07.24.05.16.20 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 24 Jul 2014 05:16:21 -0700 (PDT) Content-Type: multipart/alternative; boundary="Apple-Mail=_70F00B94-15AA-4927-91A4-20CFA7316629" Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.2\)) From: Kireeti Kompella In-Reply-To: Date: Thu, 24 Jul 2014 08:16:18 -0400 Message-Id: <333AAED1-2F62-454F-A876-963B11206F9E@gmail.com> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> To: Robert Raszuk X-Mailer: Apple Mail (2.1878.2) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/Y6FXG253Q_rXpCFUcvo_6zAM4Ts Cc: "mpls@ietf.org" , "Ruediger.Geib@telekom.de Geib" , "spring@ietf.org" , draft-kini-mpls-spring-entropy-label@tools.ietf.org Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 12:16:27 -0000 --Apple-Mail=_70F00B94-15AA-4927-91A4-20CFA7316629 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 (resending; sorry for the spam) Hi Robert, On Jul 24, 2014, at 03:21 , Robert Raszuk wrote: > Therefor an alternative of using any form of entropy labels in data = plane all together would be to allocate a SID blocks (say 64 or 128 = wide) and allow SPRING header imposition to use such pools of SIDs per = group of flows to effectively allow for efficient load balancing in the = network. We=92re rehashing (pun unintended) the entropy label discussion. Before we settled on entropy labels the way we did, we discussed = advertising label blocks in LDP. There are two problems: a) as Stephane mentions, ELs are stateless, but pools of SIDs impose = more state in the forwarding plane (and to some extent, in the control = plane). b) if you use small blocks, you get uneven load balancing; if you use = large blocks, you blow up the state more. Kireeti= --Apple-Mail=_70F00B94-15AA-4927-91A4-20CFA7316629 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252
(resending; sorry for the = spam)

Hi Robert,

On Jul 24, 2014, = at 03:21 , Robert Raszuk <robert@raszuk.net> = wrote:

Therefor an alternative of = using any form of entropy labels in data plane all together would be to = allocate a SID blocks (say 64 or 128 wide) and allow SPRING header = imposition to use such pools of SIDs per group of flows to effectively = allow for efficient load balancing in the = network.

We=92re rehashing (pun = unintended) the entropy label = discussion.

Before we settled on entropy = labels the way we did, we discussed advertising label blocks in LDP. =  There are two problems:
a) as Stephane mentions, ELs are = stateless, but pools of SIDs impose more state in the forwarding plane = (and to some extent, in the control plane).
b) if you use = small blocks, you get uneven load balancing; if you use large blocks, = you blow up the state = more.

Kireeti
= --Apple-Mail=_70F00B94-15AA-4927-91A4-20CFA7316629-- From nobody Thu Jul 24 05:48:28 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6AF561A02D8; Thu, 24 Jul 2014 05:48:24 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.277 X-Spam-Level: X-Spam-Status: No, score=-1.277 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FM_FORGED_GMAIL=0.622, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id BRm5qRElSXL2; Thu, 24 Jul 2014 05:48:22 -0700 (PDT) Received: from mail-ie0-x230.google.com (mail-ie0-x230.google.com [IPv6:2607:f8b0:4001:c03::230]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 439901A02DB; Thu, 24 Jul 2014 05:48:21 -0700 (PDT) Received: by mail-ie0-f176.google.com with SMTP id tr6so2139506ieb.7 for ; Thu, 24 Jul 2014 05:48:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=Y9rsdX1CFsWfKinq/AuiVlIOSfCbV+ErF8/hUHpvHMk=; b=FLqWc7mRqV4uchJ+SZQIt4qZN99PjNhG2GdQsgG6zY7e0mbird3CZwOSbQ1ry09SCA EVHmeHNmO/AvPSRA+4SSKyWcFaQWuKytKe2nTR7/DQH51wb98Nt603XUqMwvA/jf4uJs QgpEzhWcQKkdK59kYN/Tv8+UWp8lUlmkYIPk+xIuWj9Iq5V9MzQj44u+PY7c9koN8oVt ZbZZ/UFWQcBiX+38QwfRZX1+BcwNHb5pin/xMLzatIo05oeyWjArmZTMYYQirJgLcsZl 6HI4RClK7QUfcWYqCJo5Fc0bQlbqiZwNrrKTUkjzlKUkT6Hn0Ihm+uPsm25TM/0lW/9u C3TA== MIME-Version: 1.0 X-Received: by 10.50.79.135 with SMTP id j7mr14691002igx.9.1406206100499; Thu, 24 Jul 2014 05:48:20 -0700 (PDT) Sender: rraszuk@gmail.com Received: by 10.64.128.99 with HTTP; Thu, 24 Jul 2014 05:48:20 -0700 (PDT) Received: by 10.64.128.99 with HTTP; Thu, 24 Jul 2014 05:48:20 -0700 (PDT) In-Reply-To: <083ECD6F-D7B5-4AFC-8066-19BD2B7E563B@juniper.net> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> <083ECD6F-D7B5-4AFC-8066-19BD2B7E563B@juniper.net> Date: Thu, 24 Jul 2014 14:48:20 +0200 X-Google-Sender-Auth: 8Z-RBohYggec1741j3VHbahzyfo Message-ID: From: Robert Raszuk To: Kireeti Kompella Content-Type: multipart/alternative; boundary=089e0122a75419f2fd04feefdffe Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/uzDLX2c_vw_o3bLXcvmRIxkj7z0 Cc: "mpls@ietf.org" , spring@ietf.org, draft-kini-mpls-spring-entropy-label@tools.ietf.org Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 12:48:24 -0000 --089e0122a75419f2fd04feefdffe Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Kireeti, I quite disagree about the more state argument. If you treat mpls label as prefix with mask which is all this boils down to there is no more state either in data or control plane. As to the point of not perfect load balancing it all depends on your hash function. If you always advertise at least as big block as you have max parallel links on any interface you should be fine. Best , R. On Jul 24, 2014 2:12 PM, "Kireeti Kompella" wrote: > Hi Robert, > > On Jul 24, 2014, at 03:21 , Robert Raszuk wrote: > > Therefor an alternative of using any form of entropy labels in data > plane all together would be to allocate a SID blocks (say 64 or 128 wide) > and allow SPRING header imposition to use such pools of SIDs per group of > flows to effectively allow for efficient load balancing in the network. > > > We=E2=80=99re rehashing (pun unintended) the entropy label discussion. > > Before we settled on entropy labels the way we did, we discussed > advertising label blocks in LDP. There are two problems: > a) as Stephane mentions, ELs are stateless, but pools of SIDs impose more > state in the forwarding plane (and to some extent, in the control plane). > b) if you use small blocks, you get uneven load balancing; if you use > large blocks, you blow up the state more. > > Kireeti > > --089e0122a75419f2fd04feefdffe Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

Hi Kireeti,

I quite disagree about the more state argument.

If you treat mpls label as prefix with mask which is all thi= s boils down to there is no more state either in data or control plane.

As to the point of not perfect load balancing it all depends= on your hash function. If you always advertise at least as big block as yo= u have max parallel links on any interface you should be fine.

Best ,
R.

On Jul 24, 2014 2:12 PM, "Kireeti Kompella&= quot; <kireeti@juniper.net>= ; wrote:
Hi Robert,

On Jul 24, 2014, at 03:21 , Robert Raszuk <robert@raszuk.net> wrote:

Therefor an alternative of using any form of entropy labels in data plane a= ll together would be to allocate a SID blocks (say 64 or 128 wide) and allo= w SPRING header imposition to use such pools of SIDs per group of flows to = effectively allow for efficient load balancing in the network.

We=E2=80=99re rehashing (pun unintended) the entropy label discussion.=

Before we settled on entropy labels the way we did, we discussed adver= tising label blocks in LDP. =C2=A0There are two problems:
a) as Stephane mentions, ELs are stateless, but pools of SIDs impose m= ore state in the forwarding plane (and to some extent, in the control plane= ).
b) if you use small blocks, you get uneven load balancing; if you use = large blocks, you blow up the state more.

Kireeti

--089e0122a75419f2fd04feefdffe-- From nobody Thu Jul 24 06:27:14 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 834F71A0320; Thu, 24 Jul 2014 06:27:13 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.751 X-Spam-Level: X-Spam-Status: No, score=-1.751 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, MIME_CHARSET_FARAWAY=2.45, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ZisE_lberoCi; Thu, 24 Jul 2014 06:27:12 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 5574E1A02CF; Thu, 24 Jul 2014 06:27:11 -0700 (PDT) Received: from 172.18.7.190 (EHLO lhreml405-hub.china.huawei.com) ([172.18.7.190]) by lhrrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id BHO22473; Thu, 24 Jul 2014 13:27:09 +0000 (GMT) Received: from NKGEML404-HUB.china.huawei.com (10.98.56.35) by lhreml405-hub.china.huawei.com (10.201.5.242) with Microsoft SMTP Server (TLS) id 14.3.158.1; Thu, 24 Jul 2014 14:27:08 +0100 Received: from NKGEML512-MBS.china.huawei.com ([169.254.8.48]) by nkgeml404-hub.china.huawei.com ([10.98.56.35]) with mapi id 14.03.0158.001; Thu, 24 Jul 2014 21:27:04 +0800 From: Xuxiaohu To: Kireeti Kompella , Robert Raszuk Thread-Topic: [spring] SPRING MPLS and Entropy Label Thread-Index: AQHPpPG60J2/V/fu6kuL32lhjiOWm5usseMAgACS5gCAAP0cgIAADeQAgABRZgCAAJqYUg== Date: Thu, 24 Jul 2014 13:27:04 +0000 Message-ID: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08297278@NKGEML512-MBS.china.huawei.com> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> , <083ECD6F-D7B5-4AFC-8066-19BD2B7E563B@juniper.net> In-Reply-To: <083ECD6F-D7B5-4AFC-8066-19BD2B7E563B@juniper.net> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.47.133.24] Content-Type: multipart/alternative; boundary="_000_1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08297278NKGEML512MBSchi_" MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/-VoZV4aroylUdOyv4gPil4IerFs Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 13:27:13 -0000 --_000_1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08297278NKGEML512MBSchi_ Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 Q29uY3VyLg0KDQoNCg0KQmVzdCByZWdhcmRzLA0KDQpYaWFvaHUNCg0KDQoNCl9fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fDQq3orz+yMs6IG1wbHMgW21wbHMtYm91bmNlc0BpZXRmLm9y Z10gtPqx7SBLaXJlZXRpIEtvbXBlbGxhIFtraXJlZXRpQGp1bmlwZXIubmV0XQ0Kt6LLzcqxvOQ6 IDIwMTTE6jfUwjI0yNUgMjA6MTINCsrVvP7IyzogUm9iZXJ0IFJhc3p1aw0Ks63LzTogS2lyZWV0 aSBLb21wZWxsYTsgbXBsc0BpZXRmLm9yZzsgc3ByaW5nQGlldGYub3JnOyBkcmFmdC1raW5pLW1w bHMtc3ByaW5nLWVudHJvcHktbGFiZWxAdG9vbHMuaWV0Zi5vcmcNCtb3zOI6IFJlOiBbbXBsc10g W3NwcmluZ10gU1BSSU5HIE1QTFMgYW5kIEVudHJvcHkgTGFiZWwNCg0KSGkgUm9iZXJ0LA0KDQpP biBKdWwgMjQsIDIwMTQsIGF0IDAzOjIxICwgUm9iZXJ0IFJhc3p1ayA8cm9iZXJ0QHJhc3p1ay5u ZXQ8bWFpbHRvOnJvYmVydEByYXN6dWsubmV0Pj4gd3JvdGU6DQoNClRoZXJlZm9yIGFuIGFsdGVy bmF0aXZlIG9mIHVzaW5nIGFueSBmb3JtIG9mIGVudHJvcHkgbGFiZWxzIGluIGRhdGEgcGxhbmUg YWxsIHRvZ2V0aGVyIHdvdWxkIGJlIHRvIGFsbG9jYXRlIGEgU0lEIGJsb2NrcyAoc2F5IDY0IG9y IDEyOCB3aWRlKSBhbmQgYWxsb3cgU1BSSU5HIGhlYWRlciBpbXBvc2l0aW9uIHRvIHVzZSBzdWNo IHBvb2xzIG9mIFNJRHMgcGVyIGdyb3VwIG9mIGZsb3dzIHRvIGVmZmVjdGl2ZWx5IGFsbG93IGZv ciBlZmZpY2llbnQgbG9hZCBiYWxhbmNpbmcgaW4gdGhlIG5ldHdvcmsuDQoNCldloa9yZSByZWhh c2hpbmcgKHB1biB1bmludGVuZGVkKSB0aGUgZW50cm9weSBsYWJlbCBkaXNjdXNzaW9uLg0KDQpC ZWZvcmUgd2Ugc2V0dGxlZCBvbiBlbnRyb3B5IGxhYmVscyB0aGUgd2F5IHdlIGRpZCwgd2UgZGlz Y3Vzc2VkIGFkdmVydGlzaW5nIGxhYmVsIGJsb2NrcyBpbiBMRFAuICBUaGVyZSBhcmUgdHdvIHBy b2JsZW1zOg0KYSkgYXMgU3RlcGhhbmUgbWVudGlvbnMsIEVMcyBhcmUgc3RhdGVsZXNzLCBidXQg cG9vbHMgb2YgU0lEcyBpbXBvc2UgbW9yZSBzdGF0ZSBpbiB0aGUgZm9yd2FyZGluZyBwbGFuZSAo YW5kIHRvIHNvbWUgZXh0ZW50LCBpbiB0aGUgY29udHJvbCBwbGFuZSkuDQpiKSBpZiB5b3UgdXNl IHNtYWxsIGJsb2NrcywgeW91IGdldCB1bmV2ZW4gbG9hZCBiYWxhbmNpbmc7IGlmIHlvdSB1c2Ug bGFyZ2UgYmxvY2tzLCB5b3UgYmxvdyB1cCB0aGUgc3RhdGUgbW9yZS4NCg0KS2lyZWV0aQ0KDQo= --_000_1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08297278NKGEML512MBSchi_ Content-Type: text/html; charset="gb2312" Content-Transfer-Encoding: quoted-printable

Concur.

 

Best regards,

Xiaohu

 

=B7=A2=BC=FE=C8=CB: mpls [mpls-bounces@iet= f.org] =B4=FA=B1=ED Kireeti Kompella [kireeti@juniper.net]
=B7=A2=CB=CD=CA=B1=BC=E4: 2014=C4=EA7=D4=C224=C8=D5 20:12
=CA=D5=BC=FE=C8=CB: Robert Raszuk
=B3=AD=CB=CD: Kireeti Kompella; mpls@ietf.org; spring@ietf.org; draf= t-kini-mpls-spring-entropy-label@tools.ietf.org
=D6=F7=CC=E2: Re: [mpls] [spring] SPRING MPLS and Entropy Label

Hi Robert,

On Jul 24, 2014, at 03:21 , Robert Raszuk <robert@raszuk.net> wrote:

Therefor an alternative of using any form of entropy labels in data plane a= ll together would be to allocate a SID blocks (say 64 or 128 wide) and allo= w SPRING header imposition to use such pools of SIDs per group of flows to = effectively allow for efficient load balancing in the network.

We=A1=AFre rehashing (pun unintended) the entropy label discussion.

Before we settled on entropy labels the way we did, we discussed adver= tising label blocks in LDP.  There are two problems:
a) as Stephane mentions, ELs are stateless, but pools of SIDs impose m= ore state in the forwarding plane (and to some extent, in the control plane= ).
b) if you use small blocks, you get uneven load balancing; if you use = large blocks, you blow up the state more.

Kireeti

--_000_1FEE3F8F5CCDE64C9A8E8F4AD27C19EE08297278NKGEML512MBSchi_-- From nobody Thu Jul 24 07:27:23 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5886D1A01FF; Thu, 24 Jul 2014 07:27:17 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -114.502 X-Spam-Level: X-Spam-Status: No, score=-114.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ay0DNCPBvxtH; Thu, 24 Jul 2014 07:27:15 -0700 (PDT) Received: from alln-iport-1.cisco.com (alln-iport-1.cisco.com [173.37.142.88]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 033821A0383; Thu, 24 Jul 2014 07:27:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=4484; q=dns/txt; s=iport; t=1406212031; x=1407421631; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=sdJrYMKLjvH2gmd/Ihl7o/bJUHbJh80or6AkHpGFfCk=; b=m/z7l01RDS8Oi5lh9HFLFzQEOo3E+V7RDbXN2e+wufsCXjKxMPSLdDMG dn/JUxh5y6UX2MbLinmyQGadnZlziHxMrgQQ5Eh44LdnFgqVYBz9kAZNz Ef1Bx5EYx9ThAFlIIUBUAZ3HVPMpmCmtGV1RDEbjIKdTa89g5YKpggHWf w=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AhkFAIQX0VOtJV2Y/2dsb2JhbABZgmokgSkE0HgBgQ0Wd4QDAQEBBHkMBAIBCBEEAQELHQcyFAkIAQEEAQ0FCIg6AcBoF4l+hHUnMQcGgyiBGAEEii+EGYhMmGGDSGyBAwc7 X-IronPort-AV: E=Sophos;i="5.01,724,1400025600"; d="scan'208";a="63627820" Received: from rcdn-core-1.cisco.com ([173.37.93.152]) by alln-iport-1.cisco.com with ESMTP; 24 Jul 2014 14:26:55 +0000 Received: from xhc-aln-x05.cisco.com (xhc-aln-x05.cisco.com [173.36.12.79]) by rcdn-core-1.cisco.com (8.14.5/8.14.5) with ESMTP id s6OEQt86009846 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Thu, 24 Jul 2014 14:26:55 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-aln-x05.cisco.com ([173.36.12.79]) with mapi id 14.03.0123.003; Thu, 24 Jul 2014 09:26:55 -0500 From: "Nobo Akiya (nobo)" To: "Vengada Prasad Govindan (venggovi)" , Gregory Mirsky , "mpls@ietf.org" Thread-Topic: BFD Directed Path discussion Thread-Index: Ac+l26e8a77RkgmdSoKSZ/ImmV7YPAA91X3wABzCcmA= Date: Thu, 24 Jul 2014 14:26:55 +0000 Message-ID: References: <7347100B5761DC41A166AC17F22DF1121B7F279F@eusaamb103.ericsson.se> <315041E4211CB84E86EF7C25A2AB583D34639107@xmb-rcd-x15.cisco.com> In-Reply-To: <315041E4211CB84E86EF7C25A2AB583D34639107@xmb-rcd-x15.cisco.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.240.150] Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/GmUyIDVpJ58B_IFrqxCTrtyyxl8 Cc: "draft-vgovindan-mpls-extended-bfd-disc-tlv@tools.ietf.org" , "rtg-bfd@ietf.org" , "ccamp@ietf.org" , "draft-mirsky-mpls-bfd-directed@tools.ietf.org" Subject: Re: [mpls] BFD Directed Path discussion X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 14:27:17 -0000 Hi Greg, Prasad, et al, Great to see this being discussed. Adding CCAMP and authors of both documen= ts. Speaking as a BFD WG co-chair ... > [1] draft-vgovindan-mpls-extended-bfd-disc-tlv > [4] draft-mirsky-mpls-bfd-directed-00 Regarding above 2 documents, details should be discussed further but the ne= eds of both look valid. However, we should not lead down the path of having= more and more BFD bootstrapping TLVs, but have/aim-for one TLV that allows= Sub-TLVs for extensions. > [2] draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-06 Above document is dead. IETF State: Dead WG Document > [3] draft-ietf-ccamp-rsvp-te-mpls-tp-oam-ext-12 Above document is already LC'ed (long ago). IETF State: Submitted to IESG for Publication=20 My best guess is that we do not want to disrupt/block [3] at this point. Question to authors of [1] and [4]. Are you interested to change LSP Ping bootstrapping only? If so, then it se= ems the authors of [1] and [4] need to get together and come up with a sing= le BFD bootstrapping TLV (given that [2] is dead). Thanks! -Nobo > -----Original Message----- > From: Vengada Prasad Govindan (venggovi) > Sent: Thursday, July 24, 2014 6:35 AM > To: Gregory Mirsky; mpls@ietf.org > Cc: rtg-bfd@ietf.org; Nobo Akiya (nobo) > Subject: RE: BFD Directed Path discussion >=20 > Hello Greg, >=20 > Thanks for your note, a couple of clarifications here: > >how this work is related to Extended BFD Discriminator TLV work? Both > >may be complementary, especially as parts of controlling BFD >session. > >Would welcome authors of Extended BFD Discriminator TLV to discussion > >and review draft-ietf-ccamp-rsvp-te-mpls-tp-oam-ext >and > >draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf drafts (authors are planning > >to bring them over the finish line) > a. Are you suggesting that we add sub-TLVs to convey the instance identif= ier > [1] inside the BFD configuration sub-TLV of both MPLS LSP ping [2] and th= e > RSVP TE OAM [3] messages? > b. Are you considering the addition of BFD reverse-path TLV [4] as well t= o > the LSP ping and RSVP-TE OAM messages? >=20 > Thanks > Prasad > [1] draft-vgovindan-mpls-extended-bfd-disc-tlv > [2] draft-ietf-mpls-lsp-ping-mpls-tp-oam-conf-06 > [3] draft-ietf-ccamp-rsvp-te-mpls-tp-oam-ext-12 > [4] draft-mirsky-mpls-bfd-directed-00 >=20 >=20 > From: Rtg-bfd [mailto:rtg-bfd-bounces@ietf.org] On Behalf Of Gregory > Mirsky > Sent: Wednesday, July 23, 2014 12:27 AM > To: mpls@ietf.org > Cc: rtg-bfd@ietf.org > Subject: BFD Directed Path discussion >=20 > Dear All, > on behalf of the authors of this work I thank you all who participated in= the > discussions Monday (BFD WG) and today (MPLS WG). Great comments and > suggestions - very excited by your interest in this work. > I've tried to capture summary of the comments and sketch possible ways to > address these: > . BFD Return Path TLV suitable for RFC 5880, what about S-BFD? > In order to maintain stateless character of S-BFDReflector, S-BFD control > packet may need to carry return path information. Need to discuss with > authors of S-BFD Base and start work on S-BFD over MPLS LSP with IP and > ACH encapsulations; . What would happen if Return Path conveyed to the > far-end BFD peer is not available? Ingress may send another BFD Return > Path in its TLV along with the same BFD Discriminator; . Can BFD Echo of = RFC > 5880 be used in conjunction with the BFD Return Path TLV over MPLS LSP? I= t > may be interesting as BFD Echo already allows for a payload but work on > proper handling and encapsulations of BFD Echo is needed. Besides, use of > BFD Echo over MPLS LSP may be limited to single segment LSPs thus S-BFD > may be more generic mechanism to have stateless far-end BFD peer; . how > this work is related to Extended BFD Discriminator TLV work? Both may be > complementary, especially as parts of controlling BFD session. Would > welcome authors of Extended BFD Discriminator TLV to discussion and > review draft-ietf-ccamp-rsvp-te-mpls-tp-oam-ext and draft-ietf-mpls-lsp- > ping-mpls-tp-oam-conf drafts (authors are planning to bring them over the > finish line) >=20 > Please excuse me if I've missed your question and please add it to this > discussion. >=20 > =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 Regards, > =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0 Greg From nobody Thu Jul 24 08:26:09 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D1ED91A02D6 for ; Thu, 24 Jul 2014 08:26:00 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id yk0uey6R6K-i for ; Thu, 24 Jul 2014 08:25:57 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 8D1A91A019C for ; Thu, 24 Jul 2014 08:23:49 -0700 (PDT) Received: from [172.16.57.142] (unknown [206.47.221.210]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id B82401801586; Thu, 24 Jul 2014 17:23:47 +0200 (CEST) Message-ID: <53D1250D.3010704@pi.nu> Date: Thu, 24 Jul 2014 17:23:57 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "VIGOUREUX, MARTIN (MARTIN)" , draft-ietf-mpls-ipv6-only-gap@tools.ietf.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/jgc2JWgeSamDEij_H6U5-ZbRO9M Subject: [mpls] Conditional IPR poll on draft-ietf-mpls-ipv6-only-gap X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 15:26:01 -0000 Working Group, The editors/authors of draft-ietf-mpls-ipv6-only-gap has told the wg chairs that the draft is ready working group last call. It is less than 4 months since we did the IPR poll on the individual draft and the changes has not been such that we think that a new IPR poll that requires the responses form editors/authors/contributors are necessary, with less than that they have new information. Are you aware of any IPR that applies to draft-akiya-mpls-entropy- lsp-ping? If so, has this IPR been disclosed in compliance with IETF IPR rules (see RFCs 3979, 4879, 3669 and 5378 for more details). Currently there are no IPR disclosures that relates to this document. If you are an editor/author/contributor or are the MPLS WG email list, then please explicitly respond only if you are aware of any IPR that has not yet been disclosed in conformance with IETF rules. Thanks, Loa (as MPLS WG co-chair) -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Thu Jul 24 08:34:54 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5E1D01A03A5 for ; Thu, 24 Jul 2014 08:34:52 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id go87sGS9zRTu for ; Thu, 24 Jul 2014 08:34:47 -0700 (PDT) Received: from alln-iport-3.cisco.com (alln-iport-3.cisco.com [173.37.142.90]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 92F651A02D5 for ; Thu, 24 Jul 2014 08:34:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2124; q=dns/txt; s=iport; t=1406216084; x=1407425684; h=from:to:subject:date:message-id:references:in-reply-to: content-id:content-transfer-encoding:mime-version; bh=LlvAbyQIBKQum4/dHCdV6R0SyyijAOfeE432D6VHaM8=; b=jnyLBlE5BxKO5mTAJX767bX6qeBfNsGdwwA1ZeV0/1o5/5kP1TQAoWR5 G9AqV79N0nZEgzSELl0oF0tKCSE6VGlRGq8ObnSgi7x6QJyzyb9ebC1Z8 VvX/3/U5/gm2sle08RLyi/TWy4sbBwwRRYzHpbDGyDuCf2J3oHUdqEsb7 8=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AhgFAIkm0VOtJV2Q/2dsb2JhbABYgw6BKQTQeAGBDRZ3hAMBAQEEOjEaAgICAQgRAwECHxAbFx0IAgQBEohCwFkXBI5lEQFXBoRABY5IjGuUQoNIbIEMOQ X-IronPort-AV: E=Sophos;i="5.01,724,1400025600"; d="scan'208";a="63698912" Received: from rcdn-core-8.cisco.com ([173.37.93.144]) by alln-iport-3.cisco.com with ESMTP; 24 Jul 2014 15:34:43 +0000 Received: from xhc-aln-x05.cisco.com (xhc-aln-x05.cisco.com [173.36.12.79]) by rcdn-core-8.cisco.com (8.14.5/8.14.5) with ESMTP id s6OFYh93011283 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Thu, 24 Jul 2014 15:34:43 GMT Received: from xmb-aln-x02.cisco.com ([169.254.5.120]) by xhc-aln-x05.cisco.com ([173.36.12.79]) with mapi id 14.03.0123.003; Thu, 24 Jul 2014 10:34:43 -0500 From: "Carlos Pignataro (cpignata)" To: Loa Andersson , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "VIGOUREUX, MARTIN (MARTIN)" , "draft-ietf-mpls-ipv6-only-gap@tools.ietf.org" Thread-Topic: Conditional IPR poll on draft-ietf-mpls-ipv6-only-gap Thread-Index: AQHPp1NR65NyU6oFTkuj3JTZElNFRJuva7UA Date: Thu, 24 Jul 2014 15:34:42 +0000 Message-ID: References: <53D1250D.3010704@pi.nu> In-Reply-To: <53D1250D.3010704@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.4.3.140616 x-originating-ip: [64.102.157.229] Content-Type: text/plain; charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/DGhsg6QCkVIqmZuiaqP3iXp2Leg Subject: Re: [mpls] Conditional IPR poll on draft-ietf-mpls-ipv6-only-gap X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 15:34:52 -0000 Loa, I am not aware of any IPR that applies to draft-ietf-mpls-ipv6-only-gap. [please note you list a different draft in your question below, but I assume that is a typo] Thanks, Carlos. -----Original Message----- From: Loa Andersson Date: Thursday, July 24, 2014 at 11:23 AM To: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , Martin Vigoureux , "draft-ietf-mpls-ipv6-only-gap@tools.ietf.org" Subject: Conditional IPR poll on draft-ietf-mpls-ipv6-only-gap Resent-From: Resent-To: Carlos Pignataro , Wes George , , Loa Andersson , Ross Callon , Martin Vigoureux Resent-Date: Thursday, July 24, 2014 at 11:24 AM >Working Group, > >The editors/authors of draft-ietf-mpls-ipv6-only-gap has told the >wg chairs that the draft is ready working group last call. > >It is less than 4 months since we did the IPR poll on the individual >draft and the changes has not been such that we think that a new IPR >poll that requires the responses form editors/authors/contributors are >necessary, with less than that they have new information. > >Are you aware of any IPR that applies to draft-akiya-mpls-entropy- >lsp-ping? > >If so, has this IPR been disclosed in compliance with IETF IPR rules >(see RFCs 3979, 4879, 3669 and 5378 for more details). > >Currently there are no IPR disclosures that relates to this document. > >If you are an editor/author/contributor or are the MPLS WG email list, >then please explicitly respond only if you are aware of any >IPR that has not yet been disclosed in conformance with IETF rules. > >Thanks, Loa >(as MPLS WG co-chair) >--=20 > > >Loa Andersson email: loa@mail01.huawei.com >Senior MPLS Expert loa@pi.nu >Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Thu Jul 24 09:08:53 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C83741A01E2 for ; Thu, 24 Jul 2014 09:08:51 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2 X-Spam-Level: X-Spam-Status: No, score=-2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 1Xcnld21lM2N for ; Thu, 24 Jul 2014 09:08:45 -0700 (PDT) Received: from mail-ig0-x235.google.com (mail-ig0-x235.google.com [IPv6:2607:f8b0:4001:c05::235]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 8EAD11A0366 for ; Thu, 24 Jul 2014 09:08:45 -0700 (PDT) Received: by mail-ig0-f181.google.com with SMTP id h3so2852869igd.2 for ; Thu, 24 Jul 2014 09:08:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=Uk/ouavgfhYmyqJPO3F4Mkle1gwHpnBLFHzOIi+0n6k=; b=V1jHcuTK3rkZFtJsrtbG7QSV32av8Wtn67LdajrMEQKkjhAhHnPjPDgaLLWGOBQzoV 9ff4R4F4VeJrkQZblu49OMDjW0qhglMiu1MHULUQgpF4ZK+SaHyj0C9WPtpWUvTzTe9j aNw1J/V+Wm4uEEuYFbgVVqgVKN3stFQQ1WKT6AExnMDJqjs8RgsXRUekIPIN4UhdObYZ xV1sOoLv67Vu2zwFzTI1DqUcSAh5uj2G2pW4JD2Q8V02zFlMfmBZ3Vm9Z/pX9HPnMH0i 7+CfXaRtS4nTU7XpE5ErTLjJi9moLhX7OTnDar5POknQX0UXY/O3gl6LX204t+Dajmi6 JK+w== MIME-Version: 1.0 X-Received: by 10.42.118.9 with SMTP id v9mr13647745icq.26.1406218124825; Thu, 24 Jul 2014 09:08:44 -0700 (PDT) Received: by 10.50.26.74 with HTTP; Thu, 24 Jul 2014 09:08:44 -0700 (PDT) In-Reply-To: <53D1250D.3010704@pi.nu> References: <53D1250D.3010704@pi.nu> Date: Thu, 24 Jul 2014 12:08:44 -0400 Message-ID: From: Dhruv Dhody To: Loa Andersson Content-Type: text/plain; charset=UTF-8 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/iXeTK2J36KRyyjFv5MMd2-IzStw Cc: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , draft-ietf-mpls-ipv6-only-gap@tools.ietf.org Subject: Re: [mpls] Conditional IPR poll on draft-ietf-mpls-ipv6-only-gap X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 16:08:51 -0000 Hi Loa, I am not aware of any IPR that applies to draft-ietf-mpls-ipv6-only-gap. Dhruv (Contributing Author) On Thu, Jul 24, 2014 at 11:23 AM, Loa Andersson wrote: > Working Group, > > The editors/authors of draft-ietf-mpls-ipv6-only-gap has told the > wg chairs that the draft is ready working group last call. > > It is less than 4 months since we did the IPR poll on the individual > draft and the changes has not been such that we think that a new IPR > poll that requires the responses form editors/authors/contributors are > necessary, with less than that they have new information. > > Are you aware of any IPR that applies to draft-akiya-mpls-entropy- > lsp-ping? > > If so, has this IPR been disclosed in compliance with IETF IPR rules > (see RFCs 3979, 4879, 3669 and 5378 for more details). > > Currently there are no IPR disclosures that relates to this document. > > If you are an editor/author/contributor or are the MPLS WG email list, then > please explicitly respond only if you are aware of any > IPR that has not yet been disclosed in conformance with IETF rules. > > Thanks, Loa > (as MPLS WG co-chair) > -- > > > Loa Andersson email: loa@mail01.huawei.com > Senior MPLS Expert loa@pi.nu > Huawei Technologies (consultant) phone: +46 739 81 21 64 > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls From nobody Thu Jul 24 09:28:59 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 667811A040A for ; Thu, 24 Jul 2014 09:28:58 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id xHug1UAkEI2p for ; Thu, 24 Jul 2014 09:28:56 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 5AE2A1A03FF for ; Thu, 24 Jul 2014 09:28:56 -0700 (PDT) Received: from [31.133.165.202] (dhcp-a5ca.meeting.ietf.org [31.133.165.202]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 6DE1C1801586; Thu, 24 Jul 2014 18:28:54 +0200 (CEST) Message-ID: <53D13450.6090903@pi.nu> Date: Thu, 24 Jul 2014 18:29:04 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "Carlos Pignataro (cpignata)" , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "VIGOUREUX, MARTIN (MARTIN)" , "draft-ietf-mpls-ipv6-only-gap@tools.ietf.org" References: <53D1250D.3010704@pi.nu> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/xRKYmYddRxafkt7VhEdgCPv6Akw Subject: Re: [mpls] Conditional IPR poll on draft-ietf-mpls-ipv6-only-gap X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 16:28:58 -0000 Carlos, tnx - yes I made a copy past mistake (again :( ), the document we are asking about is draft-ietf-mpls-ipv6-only-gap. /Loa On 2014-07-24 17:34, Carlos Pignataro (cpignata) wrote: > Loa, > > I am not aware of any IPR that applies to draft-ietf-mpls-ipv6-only-gap. > > [please note you list a different draft in your question below, but I > assume that is a typo] > > Thanks, > > Carlos. > > -----Original Message----- > From: Loa Andersson > Date: Thursday, July 24, 2014 at 11:23 AM > To: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" > , Martin Vigoureux > , > "draft-ietf-mpls-ipv6-only-gap@tools.ietf.org" > > Subject: Conditional IPR poll on draft-ietf-mpls-ipv6-only-gap > Resent-From: > Resent-To: Carlos Pignataro , Wes George > , , Loa Andersson > , Ross Callon , Martin Vigoureux > > Resent-Date: Thursday, July 24, 2014 at 11:24 AM > >> Working Group, >> >> The editors/authors of draft-ietf-mpls-ipv6-only-gap has told the >> wg chairs that the draft is ready working group last call. >> >> It is less than 4 months since we did the IPR poll on the individual >> draft and the changes has not been such that we think that a new IPR >> poll that requires the responses form editors/authors/contributors are >> necessary, with less than that they have new information. >> >> Are you aware of any IPR that applies to draft-akiya-mpls-entropy- >> lsp-ping? >> >> If so, has this IPR been disclosed in compliance with IETF IPR rules >> (see RFCs 3979, 4879, 3669 and 5378 for more details). >> >> Currently there are no IPR disclosures that relates to this document. >> >> If you are an editor/author/contributor or are the MPLS WG email list, >> then please explicitly respond only if you are aware of any >> IPR that has not yet been disclosed in conformance with IETF rules. >> >> Thanks, Loa >> (as MPLS WG co-chair) >> -- >> >> >> Loa Andersson email: loa@mail01.huawei.com >> Senior MPLS Expert loa@pi.nu >> Huawei Technologies (consultant) phone: +46 739 81 21 64 > -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Thu Jul 24 09:46:23 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E66031A045D; Thu, 24 Jul 2014 09:46:20 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.898 X-Spam-Level: X-Spam-Status: No, score=-1.898 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Received: from OPEXCLILM34.corporate.adroot.infra.ftgroup ([169.254.4.91]) by OPEXCLILH02.corporate.adroot.infra.ftgroup ([10.114.31.30]) with mapi id 14.03.0181.006; Thu, 24 Jul 2014 18:46:15 +0200 From: To: Robert Raszuk , Kireeti Kompella Thread-Topic: [spring] SPRING MPLS and Entropy Label Thread-Index: AQHPpop+sk+mL1pXdkKUVhjrFSzu1puuo0mAgAAN5ACAAFFmAIAACegAgABjfaA= Date: Thu, 24 Jul 2014 16:46:14 +0000 Message-ID: <23003_1406220375_53D13857_23003_12993_1_9E32478DFA9976438E7A22F69B08FF9205D5B6@OPEXCLILM34.corporate.adroot.infra.ftgroup> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> <083ECD6F-D7B5-4AFC-8066-19BD2B7E563B@juniper.net> In-Reply-To: Accept-Language: fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.168.234.3] Content-Type: multipart/alternative; boundary="_000_9E32478DFA9976438E7A22F69B08FF9205D5B6OPEXCLILM34corpor_" MIME-Version: 1.0 X-PMX-Version: 6.0.3.2322014, 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IGNoYW5nZWQgb3IgZmFsc2lmaWVkLgpUaGFuayB5b3UuCjwvUFJFPjwvYm9keT4NCjwvaHRtbD4N Cg== --_000_9E32478DFA9976438E7A22F69B08FF9205D5B6OPEXCLILM34corpor_-- From nobody Thu Jul 24 09:54:23 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D1CC81A066C; Thu, 24 Jul 2014 09:54:19 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.277 X-Spam-Level: X-Spam-Status: No, score=-1.277 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FM_FORGED_GMAIL=0.622, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id kTj_jyuaOy1K; Thu, 24 Jul 2014 09:54:16 -0700 (PDT) Received: from mail-ig0-x22b.google.com (mail-ig0-x22b.google.com [IPv6:2607:f8b0:4001:c05::22b]) (using 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Sender: rraszuk@gmail.com Received: by 10.64.128.99 with HTTP; Thu, 24 Jul 2014 09:54:14 -0700 (PDT) In-Reply-To: <23003_1406220375_53D13857_23003_12993_1_9E32478DFA9976438E7A22F69B08FF9205D5B6@OPEXCLILM34.corporate.adroot.infra.ftgroup> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> <083ECD6F-D7B5-4AFC-8066-19BD2B7E563B@juniper.net> <23003_1406220375_53D13857_23003_12993_1_9E32478DFA9976438E7A22F69B08FF9205D5B6@OPEXCLILM34.corporate.adroot.infra.ftgroup> Date: Thu, 24 Jul 2014 18:54:14 +0200 X-Google-Sender-Auth: Xp9yCed01P40U-Y8rBozhjEPlpk Message-ID: From: Robert Raszuk To: "" Content-Type: multipart/alternative; boundary=089e0115ebd0855d4304fef34e99 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/hJQ30o5vN9UVz6FQkxb1QXcapYI Cc: Kireeti Kompella , "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 16:54:20 -0000 --089e0115ebd0855d4304fef34e99 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Stephane, This has NOTHING TO DO with IPv6. I am not even sure based on what you draw such strange conclusion .... I am talking pure about MPLS data plane (even without any IP above) and how we can solve the load balancing problems. At min I expect for any discussion to be valid to discuss and compare all options. Note also that SPRING does not use LDP so I am much less interested in solving the LDP load balancing issues. Rgs, R. On Thu, Jul 24, 2014 at 6:46 PM, wrote: > Robert, > > > > Talking MPLS, I don=E2=80=99t see a way to use MPLS label =E2=80=9Cprefix= =E2=80=9D =E2=80=A6 this is a > discussion we already had together. I think you are trying to sell IPv6 S= R > that I will unfortunately not buy again J > > > > *From:* spring [mailto:spring-bounces@ietf.org] *On Behalf Of *Robert > Raszuk > *Sent:* Thursday, July 24, 2014 08:48 > *To:* Kireeti Kompella > *Cc:* mpls@ietf.org; spring@ietf.org; > draft-kini-mpls-spring-entropy-label@tools.ietf.org > *Subject:* Re: [spring] SPRING MPLS and Entropy Label > > > > Hi Kireeti, > > I quite disagree about the more state argument. > > If you treat mpls label as prefix with mask which is all this boils down > to there is no more state either in data or control plane. > > As to the point of not perfect load balancing it all depends on your hash > function. If you always advertise at least as big block as you have max > parallel links on any interface you should be fine. > > Best , > R. > > On Jul 24, 2014 2:12 PM, "Kireeti Kompella" wrote: > > Hi Robert, > > > > On Jul 24, 2014, at 03:21 , Robert Raszuk wrote: > > > > Therefor an alternative of using any form of entropy labels in data > plane all together would be to allocate a SID blocks (say 64 or 128 wide) > and allow SPRING header imposition to use such pools of SIDs per group of > flows to effectively allow for efficient load balancing in the network. > > > > We=E2=80=99re rehashing (pun unintended) the entropy label discussion. > > > > Before we settled on entropy labels the way we did, we discussed > advertising label blocks in LDP. There are two problems: > > a) as Stephane mentions, ELs are stateless, but pools of SIDs impose more > state in the forwarding plane (and to some extent, in the control plane). > > b) if you use small blocks, you get uneven load balancing; if you use > large blocks, you blow up the state more. > > > > Kireeti > > > > _________________________________________________________________________= ________________________________________________ > > Ce message et ses pieces jointes peuvent contenir des informations confid= entielles ou privilegiees et ne doivent donc > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez re= cu ce message par erreur, veuillez le signaler > a l'expediteur et le detruire ainsi que les pieces jointes. Les messages = electroniques etant susceptibles d'alteration, > Orange decline toute responsabilite si ce message a ete altere, deforme o= u falsifie. Merci. > > This message and its attachments may contain confidential or privileged i= nformation that may be protected by law; > they should not be distributed, used or copied without authorisation. > If you have received this email in error, please notify the sender and de= lete this message and its attachments. > As emails may be altered, Orange is not liable for messages that have bee= n modified, changed or falsified. > Thank you. > > --089e0115ebd0855d4304fef34e99 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Stephane,

This has NOTHING TO DO with IPv6. I am not even sure based on what you draw= such strange conclusion ....=C2=A0

I am talking pure about MPLS data plane (even without any IP above) and how= we can solve the load balancing problems.=C2=A0

At min I expect for any discussion to be valid to discuss and compare all o= ptions.=C2=A0

Note also that SPRING does not use LDP so I am much less interested in solv= ing the LDP load balancing issues.=C2=A0

Rgs,
R.



On Thu, Jul 24, 2014 at 6:46 PM, <stephane.litkowski@orange.com> wrote:

Robert,

=C2=A0

Talking MPLS, I don=E2=80= =99t see a way to use MPLS label =E2=80=9Cprefix=E2=80=9D =E2=80=A6 this is= a discussion we already had together. I think you are trying to sell IPv6 = SR that I will unfortunately not buy again J=

=C2=A0

From: spring [= mailto:spring-= bounces@ietf.org] On Behalf Of Robert Raszuk
Sent: Thursday, July 24, 2014 08:48
To: Kireeti Kompella
Cc: mpls@ietf.org= ; spring@ietf.org<= /a>; draft-kini-mpls-spring-entropy-label@tools.ietf.org<= br> Subject: Re: [spring] SPRING MPLS and Entropy Label

=C2=A0

Hi Kireeti,

I quite disagree about the more state argument.

If you treat mpls label as prefix with mask which is all this boils down= to there is no more state either in data or control plane.

As to the point of not perfect load balancing it all depends on your has= h function. If you always advertise at least as big block as you have max p= arallel links on any interface you should be fine.

Best ,
R.

On Jul 24, 2014 2:12 PM, "Kireeti Kompella"= ; <kireeti@juni= per.net> wrote:

Hi Robert,

=C2=A0

On Jul 24, 2014, at 03:21 , Robert Raszuk <robert@raszuk.net> = wrote:



= Therefor an alternative of using any form of entropy labels in data plane a= ll together would be to allocate a SID blocks (say 64 or 128 wide) and allo= w SPRING header imposition to use such pools of SIDs per group of flows to effectively allow for efficient load balancing = in the network.

=C2=A0

We=E2=80=99re rehashing (pun unintended) the entropy= label discussion.

=C2=A0

Before we settled on entropy labels the way we did, = we discussed advertising label blocks in LDP. =C2=A0There are two problems:=

a) as Stephane mentions, ELs are stateless, but pool= s of SIDs impose more state in the forwarding plane (and to some extent, in= the control plane).

b) if you use small blocks, you get uneven load bala= ncing; if you use large blocks, you blow up the state more.

=C2=A0

Kireeti

=C2=A0

______________________________________________________________________=
___________________________________________________

Ce message et ses pieces jointes peuvent contenir des informations confiden=
tielles ou privilegiees et ne doivent donc
pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu=
 ce message par erreur, veuillez le signaler
a l'expediteur et le detruire ainsi que les pieces jointes. Les message=
s electroniques etant susceptibles d'alteration,
Orange decline toute responsabilite si ce message a ete altere, deforme ou =
falsifie. Merci.

This message and its attachments may contain confidential or privileged inf=
ormation that may be protected by law;
they should not be distributed, used or copied without authorisation.
If you have received this email in error, please notify the sender and dele=
te this message and its attachments.
As emails may be altered, Orange is not liable for messages that have been =
modified, changed or falsified.
Thank you.

--089e0115ebd0855d4304fef34e99-- From nobody Thu Jul 24 10:06:05 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id BA5F41A0A98; Thu, 24 Jul 2014 10:06:03 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.898 X-Spam-Level: X-Spam-Status: No, score=-1.898 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id HWl80AKz3u24; Thu, 24 Jul 2014 10:05:56 -0700 (PDT) Received: from relais-inet.francetelecom.com (relais-ias91.francetelecom.com [193.251.215.91]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 7D3481A0A97; Thu, 24 Jul 2014 10:05:54 -0700 (PDT) Received: from omfedm08.si.francetelecom.fr (unknown [xx.xx.xx.4]) by omfedm13.si.francetelecom.fr (ESMTP service) with ESMTP id 2ACE7325FA0; Thu, 24 Jul 2014 19:05:53 +0200 (CEST) Received: from Exchangemail-eme2.itn.ftgroup (unknown [10.114.31.55]) by omfedm08.si.francetelecom.fr (ESMTP service) with ESMTP id 02F45238134; Thu, 24 Jul 2014 19:05:53 +0200 (CEST) Received: from OPEXCLILM34.corporate.adroot.infra.ftgroup ([169.254.4.91]) by OPEXCLILH03.corporate.adroot.infra.ftgroup ([10.114.31.55]) with mapi id 14.03.0181.006; Thu, 24 Jul 2014 19:05:52 +0200 From: To: Robert Raszuk Thread-Topic: [spring] SPRING MPLS and Entropy Label Thread-Index: AQHPpop+sk+mL1pXdkKUVhjrFSzu1puuo0mAgAAN5ACAAFFmAIAACegAgABjfaD//+E4AIAAI60A Date: Thu, 24 Jul 2014 17:05:51 +0000 Message-ID: <10232_1406221553_53D13CF1_10232_3488_1_9E32478DFA9976438E7A22F69B08FF9205D615@OPEXCLILM34.corporate.adroot.infra.ftgroup> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> <083ECD6F-D7B5-4AFC-8066-19BD2B7E563B@juniper.net> <23003_1406220375_53D13857_23003_12993_1_9E32478DFA9976438E7A22F69B08FF9205D5B6@OPEXCLILM34.corporate.adroot.infra.ftgroup> In-Reply-To: Accept-Language: fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.168.234.3] Content-Type: multipart/alternative; boundary="_000_9E32478DFA9976438E7A22F69B08FF9205D615OPEXCLILM34corpor_" MIME-Version: 1.0 X-PMX-Version: 6.0.3.2322014, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2014.7.24.121217 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/PNTsi5m_3aKpJ6R9ZjKM64h1cZw Cc: Kireeti Kompella , "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 17:06:04 -0000 --_000_9E32478DFA9976438E7A22F69B08FF9205D615OPEXCLILM34corpor_ Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Um9iZXJ0LA0KDQpGcm9tIGEgcHJhY3RpY2FsIHBvaW50IG9mIHZpZXcgLCBob3cgZG8gIHlvdSBy ZXByZXNlbnQgc3VjaCBNUExTIGxhYmVsIHJhbmdlIHdpdGggYSBwcmVmaXggPw0KWzcwLCAxNzBd DQpbMTcsIDY5XQ0KDQpNUExTIHdhcyBub3QgZGVzaWduZWQgZm9yIOKAnGxhYmVsIGFnZ3JlZ2F0 aW9u4oCdIHNjaGVtZSDigKYNCk9yIHdlIG5lZWQgdG8gY2hhbmdlIG9mIGxhYmVscyBhcmUgYWxs b2NhdGVkIGZyb20gdGhlIGxhYmVsIHNwYWNlIGZvciBhbGwgbGFiZWwgY29uc3VtZXJzIOKApiB0 byBwZXJtaXQgdGhpcyBhZ2dyZWdhdGlvbi4NCg0KDQpGcm9tOiBycmFzenVrQGdtYWlsLmNvbSBb bWFpbHRvOnJyYXN6dWtAZ21haWwuY29tXSBPbiBCZWhhbGYgT2YgUm9iZXJ0IFJhc3p1aw0KU2Vu dDogVGh1cnNkYXksIEp1bHkgMjQsIDIwMTQgMTI6NTQNClRvOiBMSVRLT1dTS0kgU3RlcGhhbmUg U0NFL0lCTkYNCkNjOiBLaXJlZXRpIEtvbXBlbGxhOyBtcGxzQGlldGYub3JnOyBzcHJpbmdAaWV0 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mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 4D0CE1A0146; Thu, 24 Jul 2014 10:24:35 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.277 X-Spam-Level: X-Spam-Status: No, score=-1.277 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FM_FORGED_GMAIL=0.622, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 1aEIERKcPtIa; Thu, 24 Jul 2014 10:24:33 -0700 (PDT) Received: from mail-ig0-x229.google.com (mail-ig0-x229.google.com [IPv6:2607:f8b0:4001:c05::229]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C2ADF1A0B03; Thu, 24 Jul 2014 10:23:47 -0700 (PDT) Received: by 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<10232_1406221553_53D13CF1_10232_3488_1_9E32478DFA9976438E7A22F69B08FF9205D615@OPEXCLILM34.corporate.adroot.infra.ftgroup> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> <083ECD6F-D7B5-4AFC-8066-19BD2B7E563B@juniper.net> <23003_1406220375_53D13857_23003_12993_1_9E32478DFA9976438E7A22F69B08FF9205D5B6@OPEXCLILM34.corporate.adroot.infra.ftgroup> <10232_1406221553_53D13CF1_10232_3488_1_9E32478DFA9976438E7A22F69B08FF9205D615@OPEXCLILM34.corporate.adroot.infra.ftgroup> Date: Thu, 24 Jul 2014 19:23:46 +0200 X-Google-Sender-Auth: njB48SrUaigVqN1f39cIvksg45Q Message-ID: From: Robert Raszuk To: "" Content-Type: multipart/alternative; boundary=90e6ba6e87a6288e1404fef3b86c Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/r2wSNI-l66TpobjRC2hXtcukJjw Cc: Kireeti Kompella , "mpls@ietf.org" , spring@ietf.org, "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 17:24:35 -0000 --90e6ba6e87a6288e1404fef3b86c Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi, That is also solved problem ;) We already know how to encode label offset. Using the same encoding you can treat offset value as number of significant bits within the 20 bit label. We do not need to extend this to current label use cases. Hence there is no issue with backwards compatibility. Very basic and simple ;) Cheers, R. On Jul 24, 2014 7:05 PM, wrote: > Robert, > > > > From a practical point of view , how do you represent such MPLS label > range with a prefix ? > > [70, 170] > > [17, 69] > > > > MPLS was not designed for =E2=80=9Clabel aggregation=E2=80=9D scheme =E2= =80=A6 > > Or we need to change of labels are allocated from the label space for all > label consumers =E2=80=A6 to permit this aggregation. > > > > > > *From:* rraszuk@gmail.com [mailto:rraszuk@gmail.com] *On Behalf Of *Rober= t > Raszuk > *Sent:* Thursday, July 24, 2014 12:54 > *To:* LITKOWSKI Stephane SCE/IBNF > *Cc:* Kireeti Kompella; mpls@ietf.org; spring@ietf.org; > draft-kini-mpls-spring-entropy-label@tools.ietf.org > *Subject:* Re: [spring] SPRING MPLS and Entropy Label > > > > Stephane, > > > > This has NOTHING TO DO with IPv6. I am not even sure based on what you > draw such strange conclusion .... > > > > I am talking pure about MPLS data plane (even without any IP above) and > how we can solve the load balancing problems. > > > > At min I expect for any discussion to be valid to discuss and compare all > options. > > > > Note also that SPRING does not use LDP so I am much less interested in > solving the LDP load balancing issues. > > > > Rgs, > > R. > > > > > > On Thu, Jul 24, 2014 at 6:46 PM, wrote: > > Robert, > > > > Talking MPLS, I don=E2=80=99t see a way to use MPLS label =E2=80=9Cprefix= =E2=80=9D =E2=80=A6 this is a > discussion we already had together. I think you are trying to sell IPv6 S= R > that I will unfortunately not buy again J > > > > *From:* spring [mailto:spring-bounces@ietf.org] *On Behalf Of *Robert > Raszuk > *Sent:* Thursday, July 24, 2014 08:48 > *To:* Kireeti Kompella > *Cc:* mpls@ietf.org; spring@ietf.org; > draft-kini-mpls-spring-entropy-label@tools.ietf.org > *Subject:* Re: [spring] SPRING MPLS and Entropy Label > > > > Hi Kireeti, > > I quite disagree about the more state argument. > > If you treat mpls label as prefix with mask which is all this boils down > to there is no more state either in data or control plane. > > As to the point of not perfect load balancing it all depends on your hash > function. If you always advertise at least as big block as you have max > parallel links on any interface you should be fine. > > Best , > R. > > On Jul 24, 2014 2:12 PM, "Kireeti Kompella" wrote: > > Hi Robert, > > > > On Jul 24, 2014, at 03:21 , Robert Raszuk wrote: > > > > Therefor an alternative of using any form of entropy labels in data plane > all together would be to allocate a SID blocks (say 64 or 128 wide) and > allow SPRING header imposition to use such pools of SIDs per group of flo= ws > to effectively allow for efficient load balancing in the network. > > > > We=E2=80=99re rehashing (pun unintended) the entropy label discussion. > > > > Before we settled on entropy labels the way we did, we discussed > advertising label blocks in LDP. There are two problems: > > a) as Stephane mentions, ELs are stateless, but pools of SIDs impose more > state in the forwarding plane (and to some extent, in the control plane). > > b) if you use small blocks, you get uneven load balancing; if you use > large blocks, you blow up the state more. > > > > Kireeti > > > > _________________________________________________________________________= ________________________________________________ > > > > Ce message et ses pieces jointes peuvent contenir des informations confid= entielles ou privilegiees et ne doivent donc > > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez re= cu ce message par erreur, veuillez le signaler > > a l'expediteur et le detruire ainsi que les pieces jointes. Les messages = electroniques etant susceptibles d'alteration, > > Orange decline toute responsabilite si ce message a ete altere, deforme o= u falsifie. Merci. > > > > This message and its attachments may contain confidential or privileged i= nformation that may be protected by law; > > they should not be distributed, used or copied without authorisation. > > If you have received this email in error, please notify the sender and de= lete this message and its attachments. > > As emails may be altered, Orange is not liable for messages that have bee= n modified, changed or falsified. > > Thank you. > > > > _________________________________________________________________________= ________________________________________________ > > Ce message et ses pieces jointes peuvent contenir des informations confid= entielles ou privilegiees et ne doivent donc > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez re= cu ce message par erreur, veuillez le signaler > a l'expediteur et le detruire ainsi que les pieces jointes. Les messages = electroniques etant susceptibles d'alteration, > Orange decline toute responsabilite si ce message a ete altere, deforme o= u falsifie. Merci. > > This message and its attachments may contain confidential or privileged i= nformation that may be protected by law; > they should not be distributed, used or copied without authorisation. > If you have received this email in error, please notify the sender and de= lete this message and its attachments. > As emails may be altered, Orange is not liable for messages that have bee= n modified, changed or falsified. > Thank you. > > --90e6ba6e87a6288e1404fef3b86c Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

Hi,

That is also solved problem ;)

We already know how to encode label offset. Using the same e= ncoding you can treat offset value as number of significant bits within the= 20 bit label.

We do not need to extend this to current label use cases. He= nce there is no issue with backwards compatibility.

Very basic and simple ;)

Cheers,
R.

On Jul 24, 2014 7:05 PM, <stephane.litkowski@orange.com> wrote:=

Robert,

=C2=A0

From a practical point of= view , how do=C2=A0 you represent such MPLS label range with a prefix ?=

[70, 170]

[17, 69]

=C2=A0

MPLS was not designed for= =E2=80=9Clabel aggregation=E2=80=9D scheme =E2=80=A6<= /p>

Or we need to change of l= abels are allocated from the label space for all label consumers =E2=80=A6 = to permit this aggregation.

=C2=A0

=C2=A0

From: rraszuk@gmail.com [mail= to:rraszuk@gmail.com= ] On Behalf Of Robert Raszuk
Sent: Thursday, July 24, 2014 12:54
To: LITKOWSKI Stephane SCE/IBNF
Cc: Kireeti Kompella; mpls@ietf.org; spring@ietf.org; draft-kini-mpls-spring-entropy-label@t= ools.ietf.org
Subject: Re: [spring] SPRING MPLS and Entropy Label

=C2=A0

= Stephane,

= =C2=A0

= This has NOTHING TO DO with IPv6. I am not even sure based on what you draw= such strange conclusion ....=C2=A0

= =C2=A0

= I am talking pure about MPLS data plane (even without any IP above) and how= we can solve the load balancing problems.=C2=A0

= =C2=A0

= At min I expect for any discussion to be valid to discuss and compare all o= ptions.=C2=A0

= =C2=A0

= Note also that SPRING does not use LDP so I am much less interested in solv= ing the LDP load balancing issues.=C2=A0

= =C2=A0

= Rgs,

= R.

= =C2=A0

=C2=A0<= /p>

On Thu, Jul 24, 2014 at 6:46 PM, <stephane.litkowski@oran= ge.com> wrote:

Robert,<= /u>

=C2=A0

Talking MPLS, I don=E2=80= =99t see a way to use MPLS label =E2=80=9Cprefix=E2=80=9D =E2=80=A6 this is= a discussion we already had together. I think you are trying to sell IPv6 SR that I will unfortunately= not buy again J

=C2=A0

From: spring [= mailto:spring-= bounces@ietf.org] On Behalf Of Robert Raszuk
Sent: Thursday, July 24, 2014 08:48
To: Kireeti Kompella
Cc: mpls@ietf.org= ; spring@ietf.org; draft-kini-mpls-spring-entropy-label@tools.ietf.org
Subject: Re: [spring] SPRING MPLS and Entropy Label=

=C2=A0

Hi Kireeti,

I quite disagree about the more state argument.

If you treat mpls label as prefix with mask which is all this boils down= to there is no more state either in data or control plane.

As to the point of not perfect load balancing it all depends on your has= h function. If you always advertise at least as big block as you have max p= arallel links on any interface you should be fine.

Best ,
R.

On Jul 24, 2014 2:12 PM, "Kireeti Kompella"= ; <kireeti@juni= per.net> wrote:

Hi Robert,

=C2=A0

On Jul 24, 2014, at 03:21 , Robert Raszuk <robert@raszuk.net> = wrote:

=C2=A0<= /p>

= Therefor an alternative of using any form of entropy labels in data plane a= ll together would be to allocate a SID blocks (say 64 or 128 wide) and allow SPRING header imposition to use such pools of SIDs per group of = flows to effectively allow for efficient load balancing in the network.

=C2=A0

We=E2=80=99re rehashing (pun unintended) the entropy= label discussion.

=C2=A0

Before we settled on entropy labels the way we did, = we discussed advertising label blocks in LDP. =C2=A0There are two problems:=

a) as Stephane mentions, ELs are stateless, but pool= s of SIDs impose more state in the forwarding plane (and to some extent, in= the control plane).

b) if you use small blocks, you get uneven load bala= ncing; if you use large blocks, you blow up the state more.

=C2=A0

Kireeti

=C2=A0

______________________________________________________________________=
___________________________________________________
=C2=A0
Ce message et ses pieces jointes peuvent contenir des informations con=
fidentielles ou privilegiees et ne doivent donc
pas etre diffuses, exploites ou copies sans autorisation. Si vous avez=
 recu ce message par erreur, veuillez le signaler
a l'expediteur et le detruire ainsi que les pieces jointes. Les me=
ssages electroniques etant susceptibles d'alteration,

Orange decline toute responsabilite si ce message a ete altere, deform=
e ou falsifie. Merci.


=C2=A0


This message and its attachments may contain confidential or privilege=
d information that may be protected by law;


they should not be distributed, used or copied without authorisation.<=
u>


If you have received this email in error, please notify the sender and=
 delete this message and its attachments.


As emails may be altered, Orange is not liable for messages that have =
been modified, changed or falsified.


Thank you.

=C2=A0

______________________________________________________________________=
___________________________________________________

Ce message et ses pieces jointes peuvent contenir des informations confiden=
tielles ou privilegiees et ne doivent donc
pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu=
 ce message par erreur, veuillez le signaler
a l'expediteur et le detruire ainsi que les pieces jointes. Les message=
s electroniques etant susceptibles d'alteration,
Orange decline toute responsabilite si ce message a ete altere, deforme ou =
falsifie. Merci.

This message and its attachments may contain confidential or privileged inf=
ormation that may be protected by law;
they should not be distributed, used or copied without authorisation.
If you have received this email in error, please notify the sender and dele=
te this message and its attachments.
As emails may be altered, Orange is not liable for messages that have been =
modified, changed or falsified.
Thank you.
--90e6ba6e87a6288e1404fef3b86c-- From nobody Thu Jul 24 10:39:26 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 95FF91A0A9F; Thu, 24 Jul 2014 10:39:21 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.898 X-Spam-Level: X-Spam-Status: No, score=-1.898 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id N2pRZ6VYkM0c; Thu, 24 Jul 2014 10:39:17 -0700 (PDT) Received: from relais-inet.francetelecom.com (relais-ias244.francetelecom.com [80.12.204.244]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 175111A0275; Thu, 24 Jul 2014 10:39:17 -0700 (PDT) Received: from omfeda06.si.francetelecom.fr (unknown [xx.xx.xx.199]) by omfeda14.si.francetelecom.fr (ESMTP service) with ESMTP id 8926F2AC975; Thu, 24 Jul 2014 19:39:15 +0200 (CEST) Received: from Exchangemail-eme2.itn.ftgroup (unknown [10.114.31.5]) by omfeda06.si.francetelecom.fr (ESMTP service) with ESMTP id 670E8C804B; Thu, 24 Jul 2014 19:39:15 +0200 (CEST) Received: from OPEXCLILM34.corporate.adroot.infra.ftgroup ([169.254.4.91]) by OPEXCLILH01.corporate.adroot.infra.ftgroup ([::1]) with mapi id 14.03.0181.006; Thu, 24 Jul 2014 19:39:15 +0200 From: To: Robert Raszuk Thread-Topic: [spring] SPRING MPLS and Entropy Label Thread-Index: AQHPpop+sk+mL1pXdkKUVhjrFSzu1puuo0mAgAAN5ACAAFFmAIAACegAgABjfaD//+E4AIAAI60A///kkwCAACS3wA== Date: Thu, 24 Jul 2014 17:39:14 +0000 Message-ID: <31300_1406223555_53D144C3_31300_12346_1_9E32478DFA9976438E7A22F69B08FF9205D6CF@OPEXCLILM34.corporate.adroot.infra.ftgroup> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> <083ECD6F-D7B5-4AFC-8066-19BD2B7E563B@juniper.net> <23003_1406220375_53D13857_23003_12993_1_9E32478DFA9976438E7A22F69B08FF9205D5B6@OPEXCLILM34.corporate.adroot.infra.ftgroup> <10232_1406221553_53D13CF1_10232_3488_1_9E32478DFA9976438E7A22F69B08FF9205D615@OPEXCLILM34.corporate.adroot.infra.ftgroup> In-Reply-To: Accept-Language: fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.168.234.3] Content-Type: multipart/alternative; boundary="_000_9E32478DFA9976438E7A22F69B08FF9205D6CFOPEXCLILM34corpor_" MIME-Version: 1.0 X-PMX-Version: 6.0.3.2322014, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2014.7.24.170019 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/-VMs_zddBKY2Fn4NIDW6M0aCU0U Cc: Kireeti Kompella , "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 17:39:21 -0000 --_000_9E32478DFA9976438E7A22F69B08FF9205D6CFOPEXCLILM34corpor_ Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 PiBXZSBhbHJlYWR5IGtub3cgaG93IHRvIGVuY29kZSBsYWJlbCBvZmZzZXQuDQpBcmUgeW91IHJl ZmVycmluZyB0byBTZWdtZW50IEluZGV4IGFzIG9mZnNldCAgb2YgbGFiZWwgYmFzZSA/DQoNCj4g VXNpbmcgdGhlIHNhbWUgZW5jb2RpbmcgeW91IGNhbiB0cmVhdCBvZmZzZXQgdmFsdWUgYXMgbnVt YmVyIG9mIHNpZ25pZmljYW50IGJpdHMgd2l0aGluIHRoZSAyMCBiaXQgbGFiZWwuDQpDb3VsZCB5 b3UgZ2l2ZSBhbiBleGFtcGxlICBvZiBsb29rdXAgYW5kIGZvcndhcmRpbmcgc3RydWN0dXJlIGZv ciB5b3VyIGxhYmVsIHJhbmdlL2xhYmVsIHByZWZpeCA/IEkgc2VlIHNvbWV0aGluZyBwb3NzaWJs ZSBidXQgSSBzdGlsbCBoYXZlIGFuIGlzc3VlIHdpdGggdGhlIGxvb2t1cCBzdHJ1Y3R1cmUuDQoN 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From nobody Thu Jul 24 11:11:26 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 66E021ABB2C for ; Thu, 24 Jul 2014 11:11:22 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id bwhmfTmxh9cN for ; Thu, 24 Jul 2014 11:11:12 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A90881A0195 for ; Thu, 24 Jul 2014 11:11:09 -0700 (PDT) Received: from [31.133.165.202] (dhcp-a5ca.meeting.ietf.org [31.133.165.202]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 52EB01801586 for ; Thu, 24 Jul 2014 20:11:08 +0200 (CEST) Message-ID: <53D14C44.1040107@pi.nu> Date: Thu, 24 Jul 2014 20:11:16 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls@ietf.org" Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/d-7ljYXbCPdDAmhZLAU5qp5b-Bs Subject: [mpls] Heads up - planned Area re-org X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 18:11:22 -0000 FYI - This afternoon in the rtgarea meeting, our ADs will be discussing their plan to reorg the Routing Area. It's our understanding, MPLS will be impacted. If interested, it's Session II, Ontario. /Loa -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Thu Jul 24 11:31:51 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 4D20D1A016B; Thu, 24 Jul 2014 11:31:49 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.301 X-Spam-Level: X-Spam-Status: No, score=-1.301 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, J_CHICKENPOX_16=0.6, RP_MATCHES_RCVD=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id APd8uTq-rU97; Thu, 24 Jul 2014 11:31:48 -0700 (PDT) Received: from cappuccino.rob.sh (cappuccino.rob.sh [IPv6:2a03:9800:10:4c::cafe:b00c]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id CA65B1A015D; Thu, 24 Jul 2014 11:31:46 -0700 (PDT) Received: from [2001:67c:370:176:b053:d33f:722f:f376] (helo=wireless-a-v6.meeting.ietf.org) by cappuccino.rob.sh with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1XANnn-0000Cm-R9; Thu, 24 Jul 2014 19:31:40 +0100 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Content-Type: text/plain; charset=windows-1252 From: Rob Shakir In-Reply-To: Date: Thu, 24 Jul 2014 14:31:34 -0400 Content-Transfer-Encoding: quoted-printable Message-Id: <820F3138-D28A-47C6-AB0B-27AB3466D65C@rob.sh> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> To: Robert Raszuk X-Mailer: Apple Mail (2.1878.6) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/fMUyo7Mn1XCAIOj9KaR-vT9axnE Cc: "mpls@ietf.org" , "Ruediger.Geib@telekom.de Geib" , "spring@ietf.org" , draft-kini-mpls-spring-entropy-label@tools.ietf.org Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 18:31:49 -0000 Hi Robert, On 24 Jul 2014, at 03:21, Robert Raszuk wrote: >=20 > Therefor an alternative of using any form of entropy labels in data = plane all together would be to allocate a SID blocks (say 64 or 128 = wide) and allow SPRING header imposition to use such pools of SIDs per = group of flows to effectively allow for efficient load balancing in the = network. Sorry, maybe I=92m missing something here, but I found your message a = little cryptic. =46rom what I comprehend, you are saying that we define that a single = SID maps to N labels. These labels are split somehow into a =93forwarding=94= and =93hash=94 value. Simplistically, this could say that we have the = first 12 bits as the =93forwarding=94 and the bottom 8 as the =93hash=94 = value.=20 e.g. Node A advertises an Adj-SID with value 0b00000101000 (40), = anything that is in the range 0b0000010100000000000 (10240) - = 0b0000010100011111111 (10495) has the same forwarding behaviour, but the = last 8 bits are used to hash (allowing 256 different hash-able objects). If I understood right - then this seems to have a number of challenges = to me: - For Node-SIDs, we now must sterilise the SRGB to be as wide as (number = of required entries)*(number of hash-able objects required) - which = means that we must be able to determine a label block that can be used = for this. - We reduce the size of the label space from 20-bits to a smaller value = - this might be a material concern in cases where we have many other = labels that are allocated on a device (per-prefix label allocation = within an L3VPN environment that has many prefixes might be a concern?). - We need every device in the network to comprehend this new format of = label allocation and imposition - such that we do not increase the = number of forwarding entries that are required (as Stephane and Kireeti = have observed). This is problematic where we have limited LFIB already = since instead of programming a number of LFIB entries O(the number of = labelled endpoints) then we instead need to have O(number of labelled = endpoints * number of hashable objects). Equally, I think the assertion that you have made is that deeper EL is = not =93easily supported by most of [today=92s] shipping routers=94. I = think that we need to determine whether this is really the case =97 = given that MPLS WG has standardised EL we need to figure *why* a change = from this is required =97 which is (I guess) the intention of the draft = we=92re discussing here. *If* we conclude that none of the options that = are presented using existing technology are suitable, then potentially = then we can look at new solutions. If my reading of your mail is completely whacky, then please ignore the = above - and a clarifying example would be greatly appreciated. thx, r. From nobody Thu Jul 24 11:42:16 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 556651A006C; Wed, 23 Jul 2014 23:32:28 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.251 X-Spam-Level: X-Spam-Status: No, score=-2.251 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HELO_EQ_DE=0.35, RCVD_IN_DNSWL_LOW=-0.7, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id HqNnyRgAboq2; Wed, 23 Jul 2014 23:32:26 -0700 (PDT) Received: from tcmail23.telekom.de (tcmail23.telekom.de [80.149.113.243]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D16CC1A0010; Wed, 23 Jul 2014 23:32:24 -0700 (PDT) Received: from q4de8psa169.blf.telekom.de ([10.151.13.200]) by tcmail21.telekom.de with ESMTP; 24 Jul 2014 08:31:50 +0200 X-IronPort-AV: E=Sophos;i="5.01,722,1400018400"; d="scan'208";a="627917005" Received: from he113657.emea1.cds.t-internal.com ([10.134.99.17]) by q4de8psazkj.blf.telekom.de with ESMTP/TLS/AES128-SHA; 24 Jul 2014 08:31:50 +0200 Received: from HE111643.EMEA1.CDS.T-INTERNAL.COM ([10.134.93.12]) by HE113657.emea1.cds.t-internal.com ([::1]) with mapi; Thu, 24 Jul 2014 08:31:49 +0200 From: To: Date: Thu, 24 Jul 2014 08:31:49 +0200 Thread-Topic: [spring] SPRING MPLS and Entropy Label Thread-Index: Ac+mitx3LxoxUqMwQrSWLKkO83LzrwAfaSVw Message-ID: References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> In-Reply-To: <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> Accept-Language: en-US, de-DE Content-Language: de-DE X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US, de-DE Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/cn60vRf-3yWoW6Fwu6PmVmXQkQk X-Mailman-Approved-At: Thu, 24 Jul 2014 11:42:11 -0700 Cc: mpls@ietf.org, spring@ietf.org, draft-kini-mpls-spring-entropy-label@tools.ietf.org Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 06:32:28 -0000 Hi Rob, I agree, a single ELI/EL deeper in the stack as proposed by =A73.1 is the m= ost useful target solution also from my point of view. Regards, Ruediger -----Message----- From: spring [mailto:spring-bounces@ietf.org] Rob Shakir Hi Sri! [snip] rjs> Addressing the final goal - as per Stephane's comments - I would like = to recommend that we specify =A73.1 as the target option (such that we have= a single ELI/EL deeper in the stack) as the "ideal" option. It then seems = to me that a debate as to whether the forwarding behaviour in =A73.3 is pos= sible with most h/w today (both mean that either we change the number of op= erations that are required on a forwarding device when popping/swapping lab= els as far as I can see), or whether the approach in =A73.4 (with the cavea= ts noted above) is the best way forward. Thanks for your consideration. r. _______________________________________________ spring mailing list spring@ietf.org https://www.ietf.org/mailman/listinfo/spring From nobody Thu Jul 24 13:21:41 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 460391A0194; Thu, 24 Jul 2014 13:21:40 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -0.677 X-Spam-Level: X-Spam-Status: No, score=-0.677 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FM_FORGED_GMAIL=0.622, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, J_CHICKENPOX_16=0.6, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3G42gfosHcuv; Thu, 24 Jul 2014 13:21:34 -0700 (PDT) Received: from mail-ie0-x22c.google.com (mail-ie0-x22c.google.com [IPv6:2607:f8b0:4001:c03::22c]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id CDC161B2809; Thu, 24 Jul 2014 13:21:33 -0700 (PDT) Received: by mail-ie0-f172.google.com with SMTP id lx4so2782380iec.31 for ; Thu, 24 Jul 2014 13:21:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=5eijuSBmDJGi45+aFDQAv/FOB3KuR9gagmS0FCg+JzM=; b=JLwZiUkLUztFhPDZw/0zIgKcqRZZG+Fi7WnKesOrnP45aB8TNWIkHM37uuHaUE22Ot WtB52WOqTylO+1bMu1SEVOPvln57fQXQ66RS0fIUtKAyR8DwnylKCNlBsuViMk5RIxfS LvOLqx+SFNlq8Gj90hNx+IAivsKaeiEh9iPm4IW9F0Uxguzz78lWPjWzpfkIxB8Pmh+2 SGAUet12UQlBc3qE1XkyRDr8B6nHx5FKwjbQPutMJFiWOHZW6+Zlx29LLDpQSZjWOLOc dfUQTaUZZiNaNhVy/J97TmNeH5NoAupVcV4XLDgJDJbGaK0f0MMZ9vdfrTBBJYVgichO IKCA== MIME-Version: 1.0 X-Received: by 10.50.79.135 with SMTP id j7mr18774342igx.9.1406233293163; Thu, 24 Jul 2014 13:21:33 -0700 (PDT) Sender: rraszuk@gmail.com Received: by 10.64.128.99 with HTTP; Thu, 24 Jul 2014 13:21:33 -0700 (PDT) In-Reply-To: <820F3138-D28A-47C6-AB0B-27AB3466D65C@rob.sh> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> <820F3138-D28A-47C6-AB0B-27AB3466D65C@rob.sh> Date: Thu, 24 Jul 2014 22:21:33 +0200 X-Google-Sender-Auth: UD48OOtcGG8oXDyoKn3h36pcm80 Message-ID: From: Robert Raszuk To: Rob Shakir Content-Type: multipart/alternative; boundary=089e0122a754e913d004fef6331c Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/9IhdqQiavTFHDVqzPSKFZUdP1rM Cc: "mpls@ietf.org" , "Ruediger.Geib@telekom.de Geib" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 20:21:40 -0000 --089e0122a754e913d004fef6331c Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Rob, I see your interpretation and where it could be confusing. You have clearly went beyond my boldest intentions :) > From what I comprehend, you are saying that we define > that a single SID maps to N labels. Nope. That is perhaps key difference. My proposal is that node advertises block of Node-SIDs which in turn map 1:1 to MPLS labels. The block of Node-SIDs as as big as largest expected number of parallel links. /* There is no harm in wrong estimation as simply you will just readvertise larger or smaller block */ While this could be accomplished today and may work fine in number of deployments as is there is clear opportunity for optimization. That say that SID block can be represented as prefix so naturally corresponding to it MPLS labels. That said there are two things missing ... * fundamental the SR architecture does not accommodate that * MPLS data plane can be optimized to reduce number of LFIB entries. And that's it. How you use it seems just natural both on ingress as well as on the transit nodes. Best, r. On Thu, Jul 24, 2014 at 8:31 PM, Rob Shakir wrote: > Hi Robert, > > On 24 Jul 2014, at 03:21, Robert Raszuk wrote: > > > > > Therefor an alternative of using any form of entropy labels in data > plane all together would be to allocate a SID blocks (say 64 or 128 wide) > and allow SPRING header imposition to use such pools of SIDs per group of > flows to effectively allow for efficient load balancing in the network. > > Sorry, maybe I=E2=80=99m missing something here, but I found your message= a little > cryptic. > > From what I comprehend, you are saying that we define that a single SID > maps to N labels. These labels are split somehow into a =E2=80=9Cforwardi= ng=E2=80=9D and > =E2=80=9Chash=E2=80=9D value. Simplistically, this could say that we have= the first 12 bits > as the =E2=80=9Cforwarding=E2=80=9D and the bottom 8 as the =E2=80=9Chash= =E2=80=9D value. > > e.g. Node A advertises an Adj-SID with value 0b00000101000 (40), anything > that is in the range 0b0000010100000000000 (10240) - 0b000001010001111111= 1 > (10495) has the same forwarding behaviour, but the last 8 bits are used t= o > hash (allowing 256 different hash-able objects). > > If I understood right - then this seems to have a number of challenges to > me: > > - For Node-SIDs, we now must sterilise the SRGB to be as wide as (number > of required entries)*(number of hash-able objects required) - which means > that we must be able to determine a label block that can be used for this= . > - We reduce the size of the label space from 20-bits to a smaller value - > this might be a material concern in cases where we have many other labels > that are allocated on a device (per-prefix label allocation within an L3V= PN > environment that has many prefixes might be a concern?). > - We need every device in the network to comprehend this new format of > label allocation and imposition - such that we do not increase the number > of forwarding entries that are required (as Stephane and Kireeti have > observed). This is problematic where we have limited LFIB already since > instead of programming a number of LFIB entries O(the number of labelled > endpoints) then we instead need to have O(number of labelled endpoints * > number of hashable objects). > > Equally, I think the assertion that you have made is that deeper EL is no= t > =E2=80=9Ceasily supported by most of [today=E2=80=99s] shipping routers= =E2=80=9D. I think that we > need to determine whether this is really the case =E2=80=94 given that MP= LS WG has > standardised EL we need to figure *why* a change from this is required = =E2=80=94 > which is (I guess) the intention of the draft we=E2=80=99re discussing he= re. *If* > we conclude that none of the options that are presented using existing > technology are suitable, then potentially then we can look at new solutio= ns. > > If my reading of your mail is completely whacky, then please ignore the > above - and a clarifying example would be greatly appreciated. > > thx, > r. > > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring > --089e0122a754e913d004fef6331c Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi Rob,

I see your interpretation and where it could = be confusing. You have clearly went beyond my boldest intentions :)=C2=A0

> From what I comprehend, you are saying that we define=C2=A0
> that a single SID maps to N labels.

Nope. That is perhaps key difference.=C2=A0
=

My proposal is that no= de advertises block of Node-SIDs which in turn map 1:1 to MPLS labels. The = block of Node-SIDs as as big as largest expected number of parallel links.= =C2=A0
/* There is no harm in wrong estimation as simply you will jus= t readvertise larger or smaller block */
While this could be accomplished today and may work fine in nu= mber of deployments as is there is clear opportunity for optimization. That= say that SID block can be represented as prefix so naturally corresponding= to it MPLS labels.=C2=A0
That said there are two things missing ...=C2=A0
<= div class=3D"gmail_default" style>
* fundamental the SR= =C2=A0architecture=C2=A0does not=C2=A0accommodate=C2=A0that
* MPLS data plane can be optimized to= reduce number of LFIB entries.

And that's it. How you use it see= ms just natural both on ingress as well as on the transit nodes.
=
Best,
r.






On Thu, Jul 24, = 2014 at 8:31 PM, Rob Shakir <rjs@rob.sh> wrote:
Hi Robert,

On 24 Jul 2014, at 03:21, Robert Raszuk <robert@raszuk.net> wrote:

>
> Therefor an alternative of using any form of entropy labels in data pl= ane all together would be to allocate a SID blocks (say 64 or 128 wide) and= allow SPRING header imposition to use such pools of SIDs per group of flow= s to effectively allow for efficient load balancing in the network.

Sorry, maybe I=E2=80=99m missing something here, but I found your mes= sage a little cryptic.

>From what I comprehend, you are saying that we define that a single SID map= s to N labels. These labels are split somehow into a =E2=80=9Cforwarding=E2= =80=9D and =E2=80=9Chash=E2=80=9D value. Simplistically, this could say tha= t we have the first 12 bits as the =E2=80=9Cforwarding=E2=80=9D and the bot= tom 8 as the =E2=80=9Chash=E2=80=9D value.

e.g. Node A advertises an Adj-SID with value 0b00000101000 (40), anything t= hat is in the range 0b0000010100000000000 (10240) - 0b0000010100011111111 (= 10495) has the same forwarding behaviour, but the last 8 bits are used to h= ash (allowing 256 different hash-able objects).

If I understood right - then this seems to have a number of challenges to m= e:

- For Node-SIDs, we now must sterilise the SRGB to be as wide as (number of= required entries)*(number of hash-able objects required) - which means tha= t we must be able to determine a label block that can be used for this.
- We reduce the size of the label space from 20-bits to a smaller value - t= his might be a material concern in cases where we have many other labels th= at are allocated on a device (per-prefix label allocation within an L3VPN e= nvironment that has many prefixes might be a concern?).
- We need every device in the network to comprehend this new format of labe= l allocation and imposition - such that we do not increase the number of fo= rwarding entries that are required (as Stephane and Kireeti have observed).= This is problematic where we have limited LFIB already since instead of pr= ogramming a number of LFIB entries O(the number of labelled endpoints) then= we instead need to have O(number of labelled endpoints * number of hashabl= e objects).

Equally, I think the assertion that you have made is that deeper EL is not = =E2=80=9Ceasily supported by most of [today=E2=80=99s] shipping routers=E2= =80=9D. I think that we need to determine whether this is really the case = =E2=80=94 given that MPLS WG has standardised EL we need to figure *why* a = change from this is required =E2=80=94 which is (I guess) the intention of = the draft we=E2=80=99re discussing here. *If* we conclude that none of the = options that are presented using existing technology are suitable, then pot= entially then we can look at new solutions.

If my reading of your mail is completely whacky, then please ignore the abo= ve - and a clarifying example would be greatly appreciated.

thx,
r.

_______________________________________________
spring mailing list
spring@ietf.org
= https://www.ietf.org/mailman/listinfo/spring

--089e0122a754e913d004fef6331c-- From nobody Thu Jul 24 13:30:56 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 0CDE41B288C for ; Thu, 24 Jul 2014 13:30:46 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id XCExGfJ5hyzJ for ; Thu, 24 Jul 2014 13:30:43 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id AE83F1B28A0 for ; Thu, 24 Jul 2014 13:30:02 -0700 (PDT) Received: from [31.133.165.202] (dhcp-a5ca.meeting.ietf.org [31.133.165.202]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id E3F811801586; Thu, 24 Jul 2014 22:30:00 +0200 (CEST) Message-ID: <53D16CD2.1090702@pi.nu> Date: Thu, 24 Jul 2014 22:30:10 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls@ietf.org" Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/dJeVr9OqwpzUMiyJa6tzfrXr_TA Cc: "mpls-chairs@tools.ietf.org" , "draft-ietf-mpls-ipv6-only-gap@tools.ietf.org" Subject: [mpls] draft-ietf-mpls-ipv6-only-gap X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 20:30:46 -0000 Working Group, This is to initiate a two week working group last call on draft-ietf-mpls-ipv6-only-gap-01. Please send your comments to the mpls wg mailing list (mpls@ietf.org). There are no IPR disclosures against this document. The authors have stated that they are unaware of any IPRs related to this document. This working group last call ends August 8, 2014.. We have requested a routing area directorate review that has the same target date. /Loa for the MPLS wg chairs -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Thu Jul 24 13:34:29 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3C0E91B27D7; Thu, 24 Jul 2014 13:34:28 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.277 X-Spam-Level: X-Spam-Status: No, score=-1.277 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FM_FORGED_GMAIL=0.622, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id C5dzgFgWxOlm; Thu, 24 Jul 2014 13:34:25 -0700 (PDT) Received: from mail-ig0-x22f.google.com (mail-ig0-x22f.google.com [IPv6:2607:f8b0:4001:c05::22f]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 6089C1A03BD; Thu, 24 Jul 2014 13:34:25 -0700 (PDT) Received: by mail-ig0-f175.google.com with SMTP id uq10so6941578igb.8 for ; Thu, 24 Jul 2014 13:34:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=jW2U0WyUqUCGQFJPbQMM+t/+OAJORm2zR1KJrHz8RhU=; b=rsTtOMAYWNkk2nVv4OKv2KnVWBFXyCnVU3SX0+RcxL8EoHRnb+V/yQWanVtaAyuf6H IkR7PyfsXTvUAR6LspsE1Rbbkdl9y/aKM1DPoF+zzLy1HwrUN5cFstRxdDQbetwvBSZE /J66E6NGY7xK5fHRELWUeTQAUltBmWmQa5O2/2YBywvS+6oFoViDM2izc/1SPi1cZ81y D4hv9enuqe9W6y6VI2J2oypxTrWdt/Ad3hOGpb0BOYKOADS/KVOLek1n54vdiGX2bpkB Ae4PqTg+ZfJTWFCbJpYPKWqeV61H7aR/O7M5X6adxDtmNiwUY1atFyHLYAMzg/PAYrI0 jq4g== MIME-Version: 1.0 X-Received: by 10.42.240.20 with SMTP id ky20mr15310598icb.97.1406234064675; Thu, 24 Jul 2014 13:34:24 -0700 (PDT) Sender: rraszuk@gmail.com Received: by 10.64.128.99 with HTTP; Thu, 24 Jul 2014 13:34:24 -0700 (PDT) In-Reply-To: <31300_1406223555_53D144C3_31300_12346_1_9E32478DFA9976438E7A22F69B08FF9205D6CF@OPEXCLILM34.corporate.adroot.infra.ftgroup> References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> <083ECD6F-D7B5-4AFC-8066-19BD2B7E563B@juniper.net> <23003_1406220375_53D13857_23003_12993_1_9E32478DFA9976438E7A22F69B08FF9205D5B6@OPEXCLILM34.corporate.adroot.infra.ftgroup> <10232_1406221553_53D13CF1_10232_3488_1_9E32478DFA9976438E7A22F69B08FF9205D615@OPEXCLILM34.corporate.adroot.infra.ftgroup> <31300_1406223555_53D144C3_31300_12346_1_9E32478DFA9976438E7A22F69B08FF9205D6CF@OPEXCLILM34.corporate.adroot.infra.ftgroup> Date: Thu, 24 Jul 2014 22:34:24 +0200 X-Google-Sender-Auth: P-L6OVE26hG3i0ehdxv3iNWk0_M Message-ID: From: Robert Raszuk To: "" Content-Type: multipart/alternative; boundary=001a113328f2e568cf04fef66161 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/Ssq7r4QzwOyNmecs9pmbLhpQe2I Cc: Kireeti Kompella , "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 20:34:28 -0000 --001a113328f2e568cf04fef66161 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi, > We already know how to encode label offset. > > Are you referring to Segment Index as offset of label base ? > =E2=80=8BNo.=E2=80=8B SI is already defined for different use. I am describ= ing general concept how we could indicate in 5 bits the number of significant (for forwarding) bits in MPLS label. > Using the same encoding you can treat offset value as number of > significant bits within the 20 bit label. > > Could you give an example of lookup and forwarding structure for your > label range/label prefix ? I see something possible but I still have an > issue with the lookup structure. > =E2=80=8BThe lookup is trivial as there is no LPM needed. You simply do par= tial match on your mpls labels in the LFIB. thx, R. > > > > > > > *From:* rraszuk@gmail.com [mailto:rraszuk@gmail.com] *On Behalf Of *Rober= t > Raszuk > *Sent:* Thursday, July 24, 2014 13:24 > *To:* LITKOWSKI Stephane SCE/IBNF > *Cc:* Kireeti Kompella; spring@ietf.org; > draft-kini-mpls-spring-entropy-label@tools.ietf.org; mpls@ietf.org > *Subject:* RE: [spring] SPRING MPLS and Entropy Label > > > > Hi, > > That is also solved problem ;) > > We already know how to encode label offset. Using the same encoding you > can treat offset value as number of significant bits within the 20 bit > label. > > We do not need to extend this to current label use cases. Hence there is > no issue with backwards compatibility. > > Very basic and simple ;) > > Cheers, > R. > > On Jul 24, 2014 7:05 PM, wrote: > > Robert, > > > > From a practical point of view , how do you represent such MPLS label > range with a prefix ? > > [70, 170] > > [17, 69] > > > > MPLS was not designed for =E2=80=9Clabel aggregation=E2=80=9D scheme =E2= =80=A6 > > Or we need to change of labels are allocated from the label space for all > label consumers =E2=80=A6 to permit this aggregation. > > > > > > *From:* rraszuk@gmail.com [mailto:rraszuk@gmail.com] *On Behalf Of *Rober= t > Raszuk > *Sent:* Thursday, July 24, 2014 12:54 > *To:* LITKOWSKI Stephane SCE/IBNF > *Cc:* Kireeti Kompella; mpls@ietf.org; spring@ietf.org; > draft-kini-mpls-spring-entropy-label@tools.ietf.org > *Subject:* Re: [spring] SPRING MPLS and Entropy Label > > > > Stephane, > > > > This has NOTHING TO DO with IPv6. I am not even sure based on what you > draw such strange conclusion .... > > > > I am talking pure about MPLS data plane (even without any IP above) and > how we can solve the load balancing problems. > > > > At min I expect for any discussion to be valid to discuss and compare all > options. > > > > Note also that SPRING does not use LDP so I am much less interested in > solving the LDP load balancing issues. > > > > Rgs, > > R. > > > > > > On Thu, Jul 24, 2014 at 6:46 PM, wrote: > > Robert, > > > > Talking MPLS, I don=E2=80=99t see a way to use MPLS label =E2=80=9Cprefix= =E2=80=9D =E2=80=A6 this is a > discussion we already had together. I think you are trying to sell IPv6 S= R > that I will unfortunately not buy again J > > > > *From:* spring [mailto:spring-bounces@ietf.org] *On Behalf Of *Robert > Raszuk > *Sent:* Thursday, July 24, 2014 08:48 > *To:* Kireeti Kompella > *Cc:* mpls@ietf.org; spring@ietf.org; > draft-kini-mpls-spring-entropy-label@tools.ietf.org > *Subject:* Re: [spring] SPRING MPLS and Entropy Label > > > > Hi Kireeti, > > I quite disagree about the more state argument. > > If you treat mpls label as prefix with mask which is all this boils down > to there is no more state either in data or control plane. > > As to the point of not perfect load balancing it all depends on your hash > function. If you always advertise at least as big block as you have max > parallel links on any interface you should be fine. > > Best , > R. > > On Jul 24, 2014 2:12 PM, "Kireeti Kompella" wrote: > > Hi Robert, > > > > On Jul 24, 2014, at 03:21 , Robert Raszuk wrote: > > > > Therefor an alternative of using any form of entropy labels in data plane > all together would be to allocate a SID blocks (say 64 or 128 wide) and > allow SPRING header imposition to use such pools of SIDs per group of flo= ws > to effectively allow for efficient load balancing in the network. > > > > We=E2=80=99re rehashing (pun unintended) the entropy label discussion. > > > > Before we settled on entropy labels the way we did, we discussed > advertising label blocks in LDP. There are two problems: > > a) as Stephane mentions, ELs are stateless, but pools of SIDs impose more > state in the forwarding plane (and to some extent, in the control plane). > > b) if you use small blocks, you get uneven load balancing; if you use > large blocks, you blow up the state more. > > > > Kireeti > > > > _________________________________________________________________________= ________________________________________________ > > > > Ce message et ses pieces jointes peuvent contenir des informations confid= entielles ou privilegiees et ne doivent donc > > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez re= cu ce message par erreur, veuillez le signaler > > a l'expediteur et le detruire ainsi que les pieces jointes. Les messages = electroniques etant susceptibles d'alteration, > > Orange decline toute responsabilite si ce message a ete altere, deforme o= u falsifie. Merci. > > > > This message and its attachments may contain confidential or privileged i= nformation that may be protected by law; > > they should not be distributed, used or copied without authorisation. > > If you have received this email in error, please notify the sender and de= lete this message and its attachments. > > As emails may be altered, Orange is not liable for messages that have bee= n modified, changed or falsified. > > Thank you. > > > > _________________________________________________________________________= ________________________________________________ > > > > Ce message et ses pieces jointes peuvent contenir des informations confid= entielles ou privilegiees et ne doivent donc > > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez re= cu ce message par erreur, veuillez le signaler > > a l'expediteur et le detruire ainsi que les pieces jointes. Les messages = electroniques etant susceptibles d'alteration, > > Orange decline toute responsabilite si ce message a ete altere, deforme o= u falsifie. Merci. > > > > This message and its attachments may contain confidential or privileged i= nformation that may be protected by law; > > they should not be distributed, used or copied without authorisation. > > If you have received this email in error, please notify the sender and de= lete this message and its attachments. > > As emails may be altered, Orange is not liable for messages that have bee= n modified, changed or falsified. > > Thank you. > > _______________________________________________________________________= __________________________________________________ > > Ce message et ses pieces jointes peuvent contenir des informations confid= entielles ou privilegiees et ne doivent donc > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez re= cu ce message par erreur, veuillez le signaler > a l'expediteur et le detruire ainsi que les pieces jointes. Les messages = electroniques etant susceptibles d'alteration, > Orange decline toute responsabilite si ce message a ete altere, deforme o= u falsifie. Merci. > > This message and its attachments may contain confidential or privileged i= nformation that may be protected by law; > they should not be distributed, used or copied without authorisation. > If you have received this email in error, please notify the sender and de= lete this message and its attachments. > As emails may be altered, Orange is not liable for messages that have bee= n modified, changed or falsified. > Thank you. > > --001a113328f2e568cf04fef66161 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi,

> We already kn= ow how to encode label offset.

Are you referring to Segment Index as offset= =C2=A0 of label base ?


=E2=80=8BNo.=E2=80=8B SI is already defined for different use. I am describ= ing general concept how we could indicate in 5 bits the number of significa= nt (for forwarding) bits in MPLS label.=C2=A0

=C2=A0> Using the same encoding you can treat offset value as number of signif= icant bits within the 20 bit label.

Could you give an example =C2=A0of lookup and = forwarding structure for your label range/label prefix ? I see something po= ssible but I still have an issue with the lookup structure.

=


=E2=80=8BThe loo= kup is trivial as there is no LPM needed. You simply do partial match on yo= ur mpls labels in the LFIB.

thx,
R.






=C2=A0

=C2=A0

=C2=A0

=C2=A0

From: rraszuk@gmail.com [mail= to:rraszuk@gmail.com= ] On Behalf Of Robert Raszuk
Sent: Thursday, July 24, 2014 13:24
To: LITKOWSKI Stephane SCE/IBNF
Cc: Kireeti Kompella; spring@ietf.org; draft-kini-mpls-spring-entropy-la= bel@tools.ietf.org; = mpls@ietf.org
Subject: RE: [spring] SPRING MPLS and Entropy Label

=C2=A0

Hi,

That is also solved problem ;)

We already know how to encode label offset. Using the same encoding you = can treat offset value as number of significant bits within the 20 bit labe= l.

We do not need to extend this to current label use cases. Hence there is= no issue with backwards compatibility.

Very basic and simple ;)

Cheers,
R.

On Jul 24, 2014 7:05 PM, <stephane.litkowski@orange.com> wrote:

Robert,<= /u>

=C2=A0

From a practical point of= view , how do=C2=A0 you represent such MPLS label range with a prefix ?

[70, 170]

[17, 69]=

=C2=A0

MPLS was not designed for= =E2=80=9Clabel aggregation=E2=80=9D scheme =E2=80=A6<= /p>

Or we need to change of l= abels are allocated from the label space for all label consumers =E2=80=A6 = to permit this aggregation.

=C2=A0

=C2=A0

From: rraszuk@gmail.com [mailto:rraszuk@gm= ail.com] On Behalf Of Robert Raszuk
Sent: Thursday, July 24, 2014 12:54
To: LITKOWSKI Stephane SCE/IBNF
Cc: Kireeti Kompella; mpls@ietf.org; spring@ietf.org; <= a href=3D"mailto:draft-kini-mpls-spring-entropy-label@tools.ietf.org" targe= t=3D"_blank"> draft-kini-mpls-spring-entropy-label@tools.ietf.org
Subject: Re: [spring] SPRING MPLS and Entropy Label=

=C2=A0

= Stephane,

= =C2=A0

= This has NOTHING TO DO with IPv6. I am not even sure based on what you draw= such strange conclusion ....=C2=A0

= =C2=A0

= I am talking pure about MPLS data plane (even without any IP above) and how= we can solve the load balancing problems.=C2=A0

= =C2=A0

= At min I expect for any discussion to be valid to discuss and compare all o= ptions.=C2=A0

= =C2=A0

= Note also that SPRING does not use LDP so I am much less interested in solv= ing the LDP load balancing issues.=C2=A0

= =C2=A0

= Rgs,

= R.

= =C2=A0

=C2=A0<= /p>

On Thu, Jul 24, 2014 at 6:46 PM, <stephane.litkowski@oran= ge.com> wrote:

Robert,<= /u>

=C2=A0

Talking MPLS, I don=E2=80= =99t see a way to use MPLS label =E2=80=9Cprefix=E2=80=9D =E2=80=A6 this is= a discussion we already had together. I think you are trying to sell IPv6 SR that I will unfortunately= not buy again J

=C2=A0

From: spring [= mailto:spring-= bounces@ietf.org] On Behalf Of Robert Raszuk
Sent: Thursday, July 24, 2014 08:48
To: Kireeti Kompella
Cc: mpls@ietf.org= ; spring@ietf.org; draft-kini-mpls-spring-entropy-label@tools.ietf.org
Subject: Re: [spring] SPRING MPLS and Entropy Label=

=C2=A0

Hi Kireeti,

I quite disagree about the more state argument.

If you treat mpls label as prefix with mask which is all this boils down= to there is no more state either in data or control plane.

As to the point of not perfect load balancing it all depends on your has= h function. If you always advertise at least as big block as you have max p= arallel links on any interface you should be fine.

Best ,
R.

On Jul 24, 2014 2:12 PM, "Kireeti Kompella"= ; <kireeti@juni= per.net> wrote:

Hi Robert,

=C2=A0

On Jul 24, 2014, at 03:21 , Robert Raszuk <robert@raszuk.net> = wrote:

=C2=A0<= /p>

= Therefor an alternative of using any form of entropy labels in data plane a= ll together would be to allocate a SID blocks (say 64 or 128 wide) and allow SPRING header imposition to use such pools of SIDs per group of = flows to effectively allow for efficient load balancing in the network.

=C2=A0

We=E2=80=99re rehashing (pun unintended) the entropy= label discussion.

=C2=A0

Before we settled on entropy labels the way we did, = we discussed advertising label blocks in LDP. =C2=A0There are two problems:=

a) as Stephane mentions, ELs are stateless, but pool= s of SIDs impose more state in the forwarding plane (and to some extent, in= the control plane).

b) if you use small blocks, you get uneven load bala= ncing; if you use large blocks, you blow up the state more.

=C2=A0

Kireeti

=C2=A0

______________________________________________________________________=
___________________________________________________
=C2=A0
Ce message et ses pieces jointes peuvent contenir des informations con=
fidentielles ou privilegiees et ne doivent donc
pas etre diffuses, exploites ou copies sans autorisation. Si vous avez=
 recu ce message par erreur, veuillez le signaler
a l'expediteur et le detruire ainsi que les pieces jointes. Les me=
ssages electroniques etant susceptibles d'alteration,

Orange decline toute responsabilite si ce message a ete altere, deform=
e ou falsifie. Merci.


=C2=A0


This message and its attachments may contain confidential or privilege=
d information that may be protected by law;


they should not be distributed, used or copied without authorisation.<=
u>


If you have received this email in error, please notify the sender and=
 delete this message and its attachments.


As emails may be altered, Orange is not liable for messages that have =
been modified, changed or falsified.


Thank you.

=C2=A0

______________________________________________________________________=
___________________________________________________
=C2=A0
Ce message et ses pieces jointes peuvent contenir des informations con=
fidentielles ou privilegiees et ne doivent donc
pas etre diffuses, exploites ou copies sans autorisation. Si vous avez=
 recu ce message par erreur, veuillez le signaler
a l'expediteur et le detruire ainsi que les pieces jointes. Les me=
ssages electroniques etant susceptibles d'alteration,

Orange decline toute responsabilite si ce message a ete altere, deform=
e ou falsifie. Merci.


=C2=A0


This message and its attachments may contain confidential or privilege=
d information that may be protected by law;


they should not be distributed, used or copied without authorisation.<=
u>


If you have received this email in error, please notify the sender and=
 delete this message and its attachments.


As emails may be altered, Orange is not liable for messages that have =
been modified, changed or falsified.


Thank you.


______________________________________________________________________=
___________________________________________________

Ce message et ses pieces jointes peuvent contenir des informations confiden=
tielles ou privilegiees et ne doivent donc
pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu=
 ce message par erreur, veuillez le signaler
a l'expediteur et le detruire ainsi que les pieces jointes. Les message=
s electroniques etant susceptibles d'alteration,
Orange decline toute responsabilite si ce message a ete altere, deforme ou =
falsifie. Merci.

This message and its attachments may contain confidential or privileged inf=
ormation that may be protected by law;
they should not be distributed, used or copied without authorisation.
If you have received this email in error, please notify the sender and dele=
te this message and its attachments.
As emails may be altered, Orange is not liable for messages that have been =
modified, changed or falsified.
Thank you.

--001a113328f2e568cf04fef66161-- From nobody Thu Jul 24 14:08:46 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 65FB21A0880; Thu, 24 Jul 2014 14:08:44 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -94.752 X-Spam-Level: X-Spam-Status: No, score=-94.752 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, CHARSET_FARAWAY_HEADER=3.2, J_CHICKENPOX_72=0.6, J_CHICKENPOX_91=0.6, MIME_8BIT_HEADER=0.3, MIME_CHARSET_FARAWAY=2.45, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id B5mX0Tcn8UPA; Thu, 24 Jul 2014 14:08:40 -0700 (PDT) Received: from smtpeg.etri.re.kr (smtpeg1.etri.re.kr [129.254.27.141]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate 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<53D16B3C.4000104@labn.net> In-Reply-To: <53D16B3C.4000104@labn.net> Accept-Language: ko-KR, en-US Content-Language: ko-KR X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [129.254.26.37] Content-Type: text/plain; charset="ks_c_5601-1987" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/HjKZD0g1MFmazoHLCj7FksW8fxw Cc: "mpls@ietf.org" , "rtg-ads@tools.ietf.org" , "draft-ietf-mpls-smp-requirements.all@tools.ietf.org" , "rtg-dir@ietf.org" Subject: [mpls] =?euc-kr?b?yLi9xTogW1JURy1ESVJdIMi4vcU6ICAgUnRnRGlyIHJl?= =?euc-kr?q?view=3A_draft-ietf-mpls-smp-requirements-06=2Etxt?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2014 21:08:44 -0000 TG91LA0KDQpUaGUgdGV4dCBpbiB0aGUgY3VycmVudCBkcmFmdCAoMDcgdmVyc2lvbikgd2FzIHJl 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quoted-printable

Hi George,

 

Regarding the global label, I have different opinion from that proposed = in the slide "MPLS Architectural

Principles".
1. According to the MPLS principle proposed in the page 2 and 3, I think gl= obal label comply with all the principles

described here.1) It is still 20 bits and can be in label stack. 2) It i= s application-spcific. Please refer to the draft

draft-li-mpls-global-label-usecases for the possible application scenari= os. 3) It can be allocated by IP-based

control protocols.
 
2. I do not think the concept of global label is proposed over and ove= r again. I began to participate the IETF meeting

in Stockholm in 2009. Only in that meeting, I saw the global label is pr= oposed and critisized by Yakov. Later I

experienced almost all IETF meeting. The global label idea is not propos= ed until we propose the global label idea in

2014. According to the frequency (one idea every 5 years), I do not= think the global label is proposed over and over

again. Maybe some people proposed the ideas many times in the 4 years to= you. But it just confine to private talk.

As for me, according to the publised materias, it is not "over and = over again".

 

3. Morevoer, after 4 year, the idea of global label is not the old one a= ny more.
-- Firstly we should define what is global label. According to our definiti= on proposed in draft-li-mpls-global-

label-framework, the MPLS global label means the label which meaning can= be understood by all nodes or part of

nodes in the network. It is not mandorty that the global label must be u= nderstood by ALL nodes. In our opinion,

if one label's meaning can be understood by more than the two local neig= hboring nodes, it can be defined as the

global label.
-- Secondly, in the past 4-5 years, many new things have been proposed and = accepted in the MPLS world. They

includes upstream allocation defined in RFC5331, entropy label defined i= n RFC 6790, flow label defined in RFC

6391, special-purpose label defined in RFC 7274, etc. According to our d= efinition on global label, all of them can

be seen as some types of global label because these labels can be consis= tently processed or understood by multiple

nodes in one network instead of the local upstream node and the downstre= am node.
I wonder what is the global label's definition in the slides "MPLS Arc= hitectural Principles". Do you means that

label  allocated by part of nodes in the network can not be called = as global label? Or do you means the label which

is unerstood by multiple nodes but allocated from context-specific label= space can not be called as the global

label?
In my own opinion, we cannot ignore the fact that the label has already mul= tiple usage beyond the original meaning

which is only understood by the local upstream node and downstream node.= It is make no sense to argue that these

label concept are different from that of global label. In my opinion, if= the concept of global label is hated, in

the future, I am sure we will not miss some label concepts which just ch= ange the name of global label.

 


Regards,

Robin

 

 

--_000_5A5B4DE12C0DAC44AF501CD9A2B01A8D0823314Ankgeml506mbxchi_-- From nobody Thu Jul 24 22:17:13 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6BD751A0AD6 for ; Thu, 24 Jul 2014 22:17:11 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.201 X-Spam-Level: X-Spam-Status: No, score=-4.201 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id uaU5FCQA4-Nu for ; Thu, 24 Jul 2014 22:17:10 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 085F11A0306 for ; Thu, 24 Jul 2014 22:17:09 -0700 (PDT) Received: from 172.18.7.190 (EHLO lhreml402-hub.china.huawei.com) ([172.18.7.190]) by lhrrg01-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id BKM80743; Fri, 25 Jul 2014 05:17:08 +0000 (GMT) Received: from nkgeml407-hub.china.huawei.com (10.98.56.38) by lhreml402-hub.china.huawei.com (10.201.5.241) with Microsoft SMTP Server (TLS) id 14.3.158.1; Fri, 25 Jul 2014 06:17:07 +0100 Received: from NKGEML506-MBX.china.huawei.com ([169.254.3.24]) by nkgeml407-hub.china.huawei.com ([10.98.56.38]) with mapi id 14.03.0158.001; Fri, 25 Jul 2014 13:17:05 +0800 From: Lizhenbin To: "swallow@cisco.com" Thread-Topic: Comments on MPLS Architectural Principles and Special semantics for double labels Thread-Index: AQHPp8dxwVTXYcESV0+CyaQhg6+WoA== Date: Fri, 25 Jul 2014 05:17:04 +0000 Message-ID: <5A5B4DE12C0DAC44AF501CD9A2B01A8D0823315D@nkgeml506-mbx.china.huawei.com> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.216.44.248] Content-Type: multipart/alternative; boundary="_000_5A5B4DE12C0DAC44AF501CD9A2B01A8D0823315Dnkgeml506mbxchi_" MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/_ktdlW77v2QHkesIjo2cSJsVFgg Cc: "mpls@ietf.org" Subject: [mpls] Comments on MPLS Architectural Principles and Special semantics for double labels X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 25 Jul 2014 05:17:11 -0000 --_000_5A5B4DE12C0DAC44AF501CD9A2B01A8D0823315Dnkgeml506mbxchi_ Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 SGkgR2VvcmdlLA0KDQpSZWdhcmRpbmcgdGhlIGZvbGxvd2luZyBjb25jZXB0IHlvdSBtZW50aW9u ZWQgd2hpY2ggaXMgcHJvcG9zZWQgb3ZlciBhbmQgb3ZlciBhZ2FpbiwNCg0KIlNwZWNpYWwgc2Vt YW50aWNzIGZvciBkb3VibGUgbGFiZWxzDQotLSBQb1AgdG9wIGxhYmVsOyBwcm9jZXNzIG5leHQg bGFiZWw7IHB1c2ggUG9Qoa9lZCBsYWJlbCBiYWNrIG9uDQogICA4IGJ5dGUgbGFiZWwgc3RhY2sg ZW50cnkiDQoNCg0KDQpEbyB5b3UgdGhpbmsgdGhlIHVwc3RyZWFtIGxhYmVsIGRlZmluZWQgaW4g UkZDNTMzMSBhbmQgaXRzIHVzYWdlIGZvciBCR1AtYmFzZWQgTVZQTiBkZWZpbmVkIGluIFJGQzY1 MTQgb3IgdGhlIGVncmVzcyBub2RlJ3MgcHJvY2VzcyBvZiBlbnRyb3B5IGxhYmVsIHdpdGggRUxJ IGRlZmluZWQgYnkgUkZDIDY3OTAgaXMgbm90ICJTcGVjaWFsIHNlbWFudGljcyBmb3IgZG91Ymxl IGxhYmVsczogUG9QIHRvcCBsYWJlbDsgcHJvY2VzcyBuZXh0IGxhYmVsIj8NCg0KDQoNCg0KDQpS ZWdhcmRzLA0KDQpSb2Jpbg0KDQoNCg0KDQo= --_000_5A5B4DE12C0DAC44AF501CD9A2B01A8D0823315Dnkgeml506mbxchi_ Content-Type: text/html; charset="gb2312" Content-Transfer-Encoding: quoted-printable

Hi George,

Regarding the following concept you mentioned which is proposed over and= over again,

"Special semantics for double labels
-- PoP top label; process next label; push PoP=A1=AFed label back on
   8 byte label stack entry"

 

Do you think the upstream label defined in RFC5331 and its usage for BGP= -based MVPN defined in RFC6514 or the egress node's process of entropy labe= l with ELI defined by RFC 6790 is not "Special semantics for double la= bels: PoP top label; process next label"?

 

 

Regards,

Robin


 

 

--_000_5A5B4DE12C0DAC44AF501CD9A2B01A8D0823315Dnkgeml506mbxchi_-- From nobody Thu Jul 24 22:27:24 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 0AA4F1A0AE2 for ; Thu, 24 Jul 2014 22:27:23 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 5qezVdsvpXEi for ; Thu, 24 Jul 2014 22:27:21 -0700 (PDT) Received: from rcdn-iport-6.cisco.com (rcdn-iport-6.cisco.com [173.37.86.77]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 89A951A0ABF for ; 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Fri, 25 Jul 2014 05:27:18 GMT Received: from xmb-aln-x03.cisco.com ([169.254.6.216]) by xhc-aln-x01.cisco.com ([173.36.12.75]) with mapi id 14.03.0123.003; Fri, 25 Jul 2014 00:27:17 -0500 From: "Kamran Raza (skraza)" To: Loa Andersson , "Carlos Pignataro (cpignata)" , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "VIGOUREUX, MARTIN (MARTIN)" , "draft-ietf-mpls-ipv6-only-gap@tools.ietf.org" Thread-Topic: [mpls] Conditional IPR poll on draft-ietf-mpls-ipv6-only-gap Thread-Index: AQHPp1TU0TRHZJINFEuuVEo+S5Mm5JuvvewAgACWW4A= Date: Fri, 25 Jul 2014 05:27:17 +0000 Message-ID: References: <53D1250D.3010704@pi.nu> <53D13450.6090903@pi.nu> In-Reply-To: <53D13450.6090903@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.4.2.140509 x-originating-ip: [10.86.246.252] Content-Type: text/plain; charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/RGz6S241SgnApWSQFl9vzlwISV0 Subject: Re: [mpls] Conditional IPR poll on draft-ietf-mpls-ipv6-only-gap X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 25 Jul 2014 05:27:23 -0000 I am not aware of any IPR related to draft-ietf-mpls-ipv6-only-gap. -- Kamran Raza skraza@cisco.com Cisco.com On 2014-07-24, 12:29 PM, "Loa Andersson" wrote: >Carlos, > >tnx - yes I made a copy past mistake (again :( ), >the document we are asking about is draft-ietf-mpls-ipv6-only-gap. > >/Loa > >On 2014-07-24 17:34, Carlos Pignataro (cpignata) wrote: >> Loa, >> >> I am not aware of any IPR that applies to draft-ietf-mpls-ipv6-only-gap. >> >> [please note you list a different draft in your question below, but I >> assume that is a typo] >> >> Thanks, >> >> Carlos. >> >> -----Original Message----- >> From: Loa Andersson >> Date: Thursday, July 24, 2014 at 11:23 AM >> To: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" >> , Martin Vigoureux >> , >> "draft-ietf-mpls-ipv6-only-gap@tools.ietf.org" >> >> Subject: Conditional IPR poll on draft-ietf-mpls-ipv6-only-gap >> Resent-From: >> Resent-To: Carlos Pignataro , Wes George >> , , Loa Andersson >> , Ross Callon , Martin Vigoureux >> >> Resent-Date: Thursday, July 24, 2014 at 11:24 AM >> >>> Working Group, >>> >>> The editors/authors of draft-ietf-mpls-ipv6-only-gap has told the >>> wg chairs that the draft is ready working group last call. >>> >>> It is less than 4 months since we did the IPR poll on the individual >>> draft and the changes has not been such that we think that a new IPR >>> poll that requires the responses form editors/authors/contributors are >>> necessary, with less than that they have new information. >>> >>> Are you aware of any IPR that applies to draft-akiya-mpls-entropy- >>> lsp-ping? >>> >>> If so, has this IPR been disclosed in compliance with IETF IPR rules >>> (see RFCs 3979, 4879, 3669 and 5378 for more details). >>> >>> Currently there are no IPR disclosures that relates to this document. >>> >>> If you are an editor/author/contributor or are the MPLS WG email list, >>> then please explicitly respond only if you are aware of any >>> IPR that has not yet been disclosed in conformance with IETF rules. >>> >>> Thanks, Loa >>> (as MPLS WG co-chair) >>> -- >>> >>> >>> Loa Andersson email: loa@mail01.huawei.com >>> Senior MPLS Expert loa@pi.nu >>> Huawei Technologies (consultant) phone: +46 739 81 21 64 >> > >--=20 > > >Loa Andersson email: loa@mail01.huawei.com >Senior MPLS Expert loa@pi.nu >Huawei Technologies (consultant) phone: +46 739 81 21 64 > >_______________________________________________ >mpls mailing list >mpls@ietf.org >https://www.ietf.org/mailman/listinfo/mpls From nobody Fri Jul 25 04:48:52 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6DAEC1B2801 for ; 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WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: =?UTF-8?B?66WY7KCV64+Z?= References: <53A5ABED.9080408@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28748144@SMTP2.etri.info>, <53B8190E.6080505@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28749702@SMTP2.etri.info> <53BE7F3B.9010005@labn.net> In-Reply-To: <53BE7F3B.9010005@labn.net> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Identified-User: {1038:box313.bluehost.com:labnmobi:labn.net} {sentby:smtp auth 69.89.31.113 authed with lberger@labn.net} Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/wKQYyPPpBa1KdwUf2T7jwMmZmoE Cc: "rtg-dir@ietf.org" , "rtg-ads@tools.ietf.org" , "draft-ietf-mpls-smp-requirements.all@tools.ietf.org" , "mpls@ietf.org" Subject: Re: [mpls] =?utf-8?b?7ZqM7IugOiBbUlRHLURJUl0gIFJ0Z0RpciByZXZpZXc6IGRy?= =?utf-8?q?aft-ietf-mpls-smp-requirements-06=2Etxt?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 25 Jul 2014 11:48:48 -0000 Jeong, I think the document looks good. Two *minor* comments on the latest rev: On 7/10/2014 7:55 AM, Lou Berger wrote: >> > - In section 4 and 5.2 you reference 5712 and 3209 as defining >> > preemption terminology and behavior. I think 6372 is the right >> > reference here as it defines both in the context of survivability and >> > in dependent of control plane. >> > [Authors] One concern is that RFC 6372 describes both soft and hard > preemptions in the context of extra traffic, which is not exactly the > case for SMP. >> > >> > Then 6372 should be referenced and the difference should be described. > Otherwise readers are likely to think you just used the wrong reference > and that 6372's text applies. 6372 is after all titled "MPLS-TP > Survivability Framework"... >> > >> > [JR] O.K. 6372 will be referenced and we can add the following > sentence as the third sentence in the paragraph: “The traffic of lower > priority paths in this document can be viewed as the extra traffic being > preempted in [RFC6372].†Section 4 looks good, but the reference is missing from in 5.2. > Bidirectional protection switching SHOULD be supported in SMP. This is really in the wrong section. bidirectional PS has nothing to do with reversion. As before, I think section 5.7 is the best place for it. Lou From nobody Fri Jul 25 06:06:26 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id CC1DE1B2831 for ; Fri, 25 Jul 2014 06:06:24 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id vQtGtzCVfeSd for ; Fri, 25 Jul 2014 06:06:23 -0700 (PDT) Received: from alln-iport-8.cisco.com (alln-iport-8.cisco.com [173.37.142.95]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 880871A0294 for ; 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Fri, 25 Jul 2014 13:06:22 GMT Received: from xmb-rcd-x03.cisco.com ([169.254.7.65]) by xhc-aln-x04.cisco.com ([173.36.12.78]) with mapi id 14.03.0123.003; Fri, 25 Jul 2014 08:06:22 -0500 From: "Nagendra Kumar Nainar (naikumar)" To: Loa Andersson , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "VIGOUREUX, MARTIN (MARTIN)" , "draft-ietf-mpls-ipv6-only-gap@tools.ietf.org" Thread-Topic: [mpls] Conditional IPR poll on draft-ietf-mpls-ipv6-only-gap Thread-Index: AQHPp1Oe472ifupLukq9flM6nkTHq5uw1KEA Date: Fri, 25 Jul 2014 13:06:22 +0000 Message-ID: References: <53D1250D.3010704@pi.nu> In-Reply-To: <53D1250D.3010704@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.4.2.140509 x-originating-ip: [10.21.125.193] Content-Type: text/plain; charset="us-ascii" Content-ID: <7CA76AF52C419F4E87B5BBCDFFF64D86@emea.cisco.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/dw06tMWKLF7uq7N-NOM1PyUIqW0 Subject: Re: [mpls] Conditional IPR poll on draft-ietf-mpls-ipv6-only-gap X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 25 Jul 2014 13:06:25 -0000 Hi, I am not aware of any IPR related to draft-ietf-mpls-ipv6-only-gap Thanks, Nagendra (Contributing Author) On 7/24/14, 11:23 AM, "Loa Andersson" wrote: >Working Group, > >The editors/authors of draft-ietf-mpls-ipv6-only-gap has told the >wg chairs that the draft is ready working group last call. > >It is less than 4 months since we did the IPR poll on the individual >draft and the changes has not been such that we think that a new IPR >poll that requires the responses form editors/authors/contributors are >necessary, with less than that they have new information. > >Are you aware of any IPR that applies to draft-akiya-mpls-entropy- >lsp-ping? > >If so, has this IPR been disclosed in compliance with IETF IPR rules >(see RFCs 3979, 4879, 3669 and 5378 for more details). > >Currently there are no IPR disclosures that relates to this document. > >If you are an editor/author/contributor or are the MPLS WG email list, >then please explicitly respond only if you are aware of any >IPR that has not yet been disclosed in conformance with IETF rules. > >Thanks, Loa >(as MPLS WG co-chair) >--=20 > > >Loa Andersson email: loa@mail01.huawei.com >Senior MPLS Expert loa@pi.nu >Huawei Technologies (consultant) phone: +46 739 81 21 64 > >_______________________________________________ >mpls mailing list >mpls@ietf.org >https://www.ietf.org/mailman/listinfo/mpls > From nobody Fri Jul 25 06:27:00 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 464661B2841; 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Fri, 25 Jul 2014 22:26:50 +0900 From: =?ks_c_5601-1987?B?t/nBpLW/?= To: Lou Berger Thread-Topic: =?ks_c_5601-1987?B?W21wbHNdIMi4vcU6IFtSVEctRElSXSAgUnRnRGlyIHJldmlldzog?= =?ks_c_5601-1987?Q?draft-ietf-mpls-smp-requirements-06.txt?= Thread-Index: AQHPp/5n6aVNhxcwpkevL5SCbROCbJuwxtNM Date: Fri, 25 Jul 2014 13:26:50 +0000 Message-ID: <5B4A6CBE3924BB41A3BEE462A8E0B75A2874D504@SMTP2.etri.info> References: <53A5ABED.9080408@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28748144@SMTP2.etri.info>, <53B8190E.6080505@labn.net> <5B4A6CBE3924BB41A3BEE462A8E0B75A28749702@SMTP2.etri.info> <53BE7F3B.9010005@labn.net>,<53D2440B.5030503@labn.net> In-Reply-To: <53D2440B.5030503@labn.net> Accept-Language: ko-KR, en-US Content-Language: ko-KR X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [129.254.26.37] Content-Type: text/plain; charset="ks_c_5601-1987" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/7eEvCU3e42yY-m0b4Xb_9jR75iA Cc: "rtg-dir@ietf.org" , "rtg-ads@tools.ietf.org" , "draft-ietf-mpls-smp-requirements.all@tools.ietf.org" , "mpls@ietf.org" Subject: [mpls] =?euc-kr?b?yLi9xTogIMi4vcU6IFtSVEctRElSXSAgUnRnRGlyIHJl?= =?euc-kr?q?view=3A_draft-ietf-mpls-smp-requirements-06=2Etxt?= X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 25 Jul 2014 13:26:57 -0000 TG91LA0KDQpUaGFua3MgZm9yIHRoZSBjb21tZW50cy4NCkFzIHlvdSBzdWdnZXN0ZWQsIFJGQyA2 MzcyIGlzIGFkZGVkIGluIFNlY3Rpb24gNS4yIA0KYW5kIHRoZSBzZW50ZW5jZSBvbiBiaWRpcmVj dGlvbmFsIHN3aXRjaGluZyBpcyBtb3ZlZCB0byBTZWN0aW9uIDUuNy4NCg0KSSBhbSB1cGxvYWRp bmcgYSByZXZpc2lvbi4NCg0KQWdhaW4sIHRoYW5rcyBmb3IgeW91ciB0aG9yb2doIHJldmlldy4N Cg0KQmVzdCByZWdhcmRzLA0KDQpKZW9uZy1kb25nDQoNCg0KDQoNCl9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX18NCrq4s70gu+e29zogTG91IEJlcmdlciBbbGJlcmdlckBs YWJuLm5ldF0NCrq4s70gs6/CpTogMjAxNLPiIDe/+SAyNcDPILHdv+TAzyC/wMjEIDg6NDgNCrne tMIgu+e29zogt/nBpLW/DQrC/MG2OiBydGctZGlyQGlldGYub3JnOyBtcGxzQGlldGYub3JnOyBk cmFmdC1pZXRmLW1wbHMtc21wLXJlcXVpcmVtZW50cy5hbGxAdG9vbHMuaWV0Zi5vcmc7IHJ0Zy1h ZHNAdG9vbHMuaWV0Zi5vcmcNCsGmuPE6IFJlOiBbbXBsc10gyLi9xTogW1JURy1ESVJdICBSdGdE aXIgcmV2aWV3OiBkcmFmdC1pZXRmLW1wbHMtc21wLXJlcXVpcmVtZW50cy0wNi50eHQNCg0KSmVv bmcsDQogICAgSSB0aGluayB0aGUgZG9jdW1lbnQgbG9va3MgZ29vZC4gIFR3byAqbWlub3IqIGNv bW1lbnRzIG9uIHRoZSBsYXRlc3QNCnJldjoNCg0KT24gNy8xMC8yMDE0IDc6NTUgQU0sIExvdSBC ZXJnZXIgd3JvdGU6DQo+PiA+IC0gSW4gc2VjdGlvbiA0IGFuZCA1LjIgeW91IHJlZmVyZW5jZSA1 NzEyIGFuZCAzMjA5IGFzIGRlZmluaW5nDQo+PiA+IHByZWVtcHRpb24gdGVybWlub2xvZ3kgYW5k IGJlaGF2aW9yLiBJIHRoaW5rIDYzNzIgaXMgdGhlIHJpZ2h0DQo+PiA+IHJlZmVyZW5jZSBoZXJl IGFzIGl0IGRlZmluZXMgYm90aCBpbiB0aGUgY29udGV4dCBvZiBzdXJ2aXZhYmlsaXR5IGFuZA0K Pj4gPiBpbiBkZXBlbmRlbnQgb2YgY29udHJvbCBwbGFuZS4NCj4+ID4gW0F1dGhvcnNdIE9uZSBj b25jZXJuIGlzIHRoYXQgUkZDIDYzNzIgZGVzY3JpYmVzIGJvdGggc29mdCBhbmQgaGFyZA0KPiBw cmVlbXB0aW9ucyBpbiB0aGUgY29udGV4dCBvZiBleHRyYSB0cmFmZmljLCB3aGljaCBpcyBub3Qg ZXhhY3RseSB0aGUNCj4gY2FzZSBmb3IgU01QLg0KPj4gPg0KPj4gPiBUaGVuIDYzNzIgc2hvdWxk IGJlIHJlZmVyZW5jZWQgYW5kIHRoZSBkaWZmZXJlbmNlIHNob3VsZCBiZSBkZXNjcmliZWQuDQo+ ICBPdGhlcndpc2UgcmVhZGVycyBhcmUgbGlrZWx5IHRvIHRoaW5rIHlvdSBqdXN0IHVzZWQgdGhl IHdyb25nIHJlZmVyZW5jZQ0KPiBhbmQgdGhhdCA2MzcyJ3MgdGV4dCBhcHBsaWVzLiAgNjM3MiBp cyBhZnRlciBhbGwgdGl0bGVkICJNUExTLVRQDQo+IFN1cnZpdmFiaWxpdHkgRnJhbWV3b3JrIi4u Lg0KPj4gPg0KPj4gPiBbSlJdIE8uSy4gNjM3MiB3aWxsIGJlIHJlZmVyZW5jZWQgYW5kIHdlIGNh biBhZGQgdGhlIGZvbGxvd2luZw0KPiBzZW50ZW5jZSBhcyB0aGUgdGhpcmQgc2VudGVuY2UgaW4g dGhlIHBhcmFncmFwaDogobBUaGUgdHJhZmZpYyBvZiBsb3dlcg0KPiBwcmlvcml0eSBwYXRocyBp biB0aGlzIGRvY3VtZW50IGNhbiBiZSB2aWV3ZWQgYXMgdGhlIGV4dHJhIHRyYWZmaWMgYmVpbmcN Cj4gcHJlZW1wdGVkIGluIFtSRkM2MzcyXS6hsQ0KDQpTZWN0aW9uIDQgbG9va3MgZ29vZCwgYnV0 IHRoZSByZWZlcmVuY2UgaXMgbWlzc2luZyBmcm9tIGluIDUuMi4NCg0KPiAgICBCaWRpcmVjdGlv bmFsIHByb3RlY3Rpb24gc3dpdGNoaW5nIFNIT1VMRCBiZSBzdXBwb3J0ZWQgaW4gU01QLg0KDQpU aGlzIGlzIHJlYWxseSBpbiB0aGUgd3Jvbmcgc2VjdGlvbi4gIGJpZGlyZWN0aW9uYWwgUFMgaGFz IG5vdGhpbmcgdG8gZG8NCndpdGggcmV2ZXJzaW9uLiAgQXMgYmVmb3JlLCBJIHRoaW5rIHNlY3Rp b24gNS43IGlzIHRoZSBiZXN0IHBsYWNlIGZvciBpdC4NCg0KTG91DQoNCg== From nobody Fri Jul 25 06:29:13 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id BB0E81A0278; Fri, 25 Jul 2014 06:29:11 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id djugv47wR_Nx; Fri, 25 Jul 2014 06:29:10 -0700 (PDT) Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 0EA9B1A027C; Fri, 25 Jul 2014 06:29:10 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: i-d-announce@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 5.6.2.p2 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <20140725132910.6964.437.idtracker@ietfa.amsl.com> Date: Fri, 25 Jul 2014 06:29:10 -0700 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/SI9LdgJVCImXYLm6nC-dGdvD8Dc Cc: mpls@ietf.org Subject: [mpls] I-D Action: draft-ietf-mpls-smp-requirements-08.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 25 Jul 2014 13:29:11 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF. Title : Requirements for MPLS-TP Shared Mesh Protection Authors : Yaacov Weingarten Sam Aldrin Ping Pan Jeong-dong Ryoo Greg Mirsky Filename : draft-ietf-mpls-smp-requirements-08.txt Pages : 15 Date : 2014-07-25 Abstract: This document presents the basic network objectives for the behavior of shared mesh protection (SMP) which are not based on control plane support. This is an expansion of the basic requirements presented in RFC 5654 "Requirements for the Transport Profile of MPLS" and RFC 6372 "MPLS Transport Profile (MPLS-TP) Survivability Framework". This document provides requirements for any mechanism that would be used to implement SMP for MPLS-TP data paths, in networks that delegate protection switch coordination to the data plane. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-smp-requirements/ There's also a htmlized version available at: http://tools.ietf.org/html/draft-ietf-mpls-smp-requirements-08 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-smp-requirements-08 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Fri Jul 25 07:26:17 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 43A541B2935; Fri, 25 Jul 2014 07:26:16 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -101.9 X-Spam-Level: X-Spam-Status: No, score=-101.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id BO3MlITppA_4; Fri, 25 Jul 2014 07:26:13 -0700 (PDT) Received: from usevmg21.ericsson.net (usevmg21.ericsson.net [198.24.6.65]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 25F511A0352; Fri, 25 Jul 2014 07:26:13 -0700 (PDT) X-AuditID: c6180641-f79916d00000623a-b3-53d2137fbfd9 Received: from EUSAAHC002.ericsson.se (Unknown_Domain [147.117.188.78]) by usevmg21.ericsson.net (Symantec Mail Security) with SMTP id 41.9C.25146.F7312D35; Fri, 25 Jul 2014 10:21:20 +0200 (CEST) Received: from EUSAAMB103.ericsson.se ([147.117.188.120]) by EUSAAHC002.ericsson.se ([147.117.188.78]) with mapi id 14.03.0174.001; Fri, 25 Jul 2014 10:26:05 -0400 From: Gregory Mirsky To: "mpls@ietf.org" , "tictoc@ietf.org" Thread-Topic: Comments to draft-mirsky-mpls-residence-time-02 Thread-Index: Ac+oEf5uEHhsN+PqSvacGOPoMGA1yQ== Date: Fri, 25 Jul 2014 14:26:05 +0000 Message-ID: <7347100B5761DC41A166AC17F22DF1121B7F45B9@eusaamb103.ericsson.se> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [147.117.188.12] Content-Type: multipart/alternative; boundary="_000_7347100B5761DC41A166AC17F22DF1121B7F45B9eusaamb103erics_" MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrKLMWRmVeSWpSXmKPExsUyuXSPn26D8KVgg2MH+S3WX5/PZHFr6UpW i7/NPewOzB5Llvxk8vhy+TNbAFMUl01Kak5mWWqRvl0CV8bPSVPYC1pcKtqnPWBsYOy27mLk 5JAQMJHYOfEWG4QtJnHh3nogm4tDSOAoo8T55slMEM5yRompaz8zgVSxCRhJvNjYw97FyMEh IuAh0b8zDSTMLJApcXvOQkYQW1jAQuLZkoksILaIgK3EvHUXWSFsPYnjpz6B2SwCqhL/750F q+EV8JXYPecbWJwR6Ijvp9YwQcwUl7j1ZD4TxHECEkv2nGeGsEUlXj7+xwphK0nMeX2NGaI+ X2Jd3yw2iJmCEidnPmGZwCg8C8moWUjKZiEpg4jrSCzY/YkNwtaWWLbwNTOMfebAYyZk8QWM 7KsYOUqLU8ty040MNzEC4+WYBJvjDsYFnywPMQpwMCrx8C7wvBgsxJpYVlyZe4hRmoNFSZxX s3pesJBAemJJanZqakFqUXxRaU5q8SFGJg5OqQZGq5bd2z1nyizUFEw4c7XAviHwz+m8e8r9 1cp984xjPRwXsaXt1n5852N37QZu9TBe8b4Lm4NtreTfc00xqY8uq0rhmTf3r/djB6vK+W2a ktMa63cGXwt2m7Vm/idruwn3ZWUbeA3X5z4T2vmmf0ft+ympO/5WbFi7bo7Xbq/d555I7P4t xKSoxFKckWioxVxUnAgA8qBAC3gCAAA= Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/p0A-QBELpoDNk_CPiDH068ifl94 Cc: "draft-mirsky-mpls-residence-time@tools.ietf.org" Subject: [mpls] Comments to draft-mirsky-mpls-residence-time-02 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 25 Jul 2014 14:26:16 -0000 --_000_7347100B5761DC41A166AC17F22DF1121B7F45B9eusaamb103erics_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Dear All, greatly appreciate comments we received after presenting our work to TICTOC= and MPLS WGs. Below my recollection of comments with responses: * Shahram pointed that TTL Expiration mechanism would alter residen= ce timing comparing with regular forwarding of an MPLS packet that may be c= arrying time synchronization packet. True. If RTM used over particular LSP, then all time synchronization packet= s may be carried over RTM ACH and LER may ignore accumulated residence in c= ertain cases. * Yaakov and George expressed concern by possible performance impac= t that use of TTL Expiration method by RTM may have on installed LSRs that = punt packets upon TTL expiration. If an LSR does not advertise RTM capability in IGP TE, then it would not ap= pear on RTM Set Object and, as result, would not be considered as "next dow= nstream RTM LSR" by RTM capable LSR that calculates distance. If neverthele= ss non-RTM capable LSR receives RTM ACH packet, then it will drop it as the= LSR would not recognize RTM ACH value. * Yaakov pointed that RTM capability is per port, not per node. Yes, and that how we plan to advertise RTM capability in IGP TE. We greatly appreciate all suggestions and comments. Regards, Greg --_000_7347100B5761DC41A166AC17F22DF1121B7F45B9eusaamb103erics_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Dear All,

greatly appreciate comments we received after presen= ting our work to TICTOC and MPLS WGs.

Below my recollection of comments with responses:

·         Shahram pointed that TTL Expiration mechanis= m would alter residence timing comparing with regular forwarding of an MPLS= packet that may be carrying time synchronization packet.

True. If RTM used over pa= rticular LSP, then all time synchronization packets may be carried over RTM= ACH and LER may ignore accumulated residence in certain cases.<= /p>

·         Yaakov and George expressed concern by possi= ble performance impact that use of TTL Expiration method by RTM may have on= installed LSRs that punt packets upon TTL expiration.

If an LSR does not advert= ise RTM capability in IGP TE, then it would not appear on RTM Set Object an= d, as result, would not be considered as “next downstream RTM LSRR= 21; by RTM capable LSR that calculates distance. If nevertheless non-RTM capable LSR receives RTM ACH packet, then it will = drop it as the LSR would not recognize RTM ACH value.

·         Yaakov pointed that RTM capability is per po= rt, not per node.

Yes, and that how we plan= to advertise RTM capability in IGP TE.

 

We greatly appreciate all suggestions and comments.<= o:p>

 

        &nbs= p;       Regards,

        &nbs= p;            &= nbsp;          Greg=

--_000_7347100B5761DC41A166AC17F22DF1121B7F45B9eusaamb103erics_-- From nobody Fri Jul 25 07:35:48 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 97ED81B2979 for ; Fri, 25 Jul 2014 07:35:45 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.202 X-Spam-Level: X-Spam-Status: No, score=-4.202 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id EBclEcOzXUdN for ; Fri, 25 Jul 2014 07:35:44 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id BE4E81B2971 for ; Fri, 25 Jul 2014 07:35:43 -0700 (PDT) Received: from 172.18.7.190 (EHLO lhreml404-hub.china.huawei.com) ([172.18.7.190]) by lhrrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id BHP17282; Fri, 25 Jul 2014 14:35:42 +0000 (GMT) Received: from DFWEML704-CHM.china.huawei.com (10.193.5.141) by lhreml404-hub.china.huawei.com (10.201.5.218) with Microsoft SMTP Server (TLS) id 14.3.158.1; Fri, 25 Jul 2014 15:35:39 +0100 Received: from DFWEML703-CHM.china.huawei.com ([169.254.5.198]) by dfweml704-chm.china.huawei.com ([169.254.6.218]) with mapi id 14.03.0158.001; Fri, 25 Jul 2014 07:35:36 -0700 From: Rajiv Papneja To: "Kamran Raza (skraza)" , Loa Andersson , "Carlos Pignataro (cpignata)" , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "VIGOUREUX, MARTIN (MARTIN)" , "draft-ietf-mpls-ipv6-only-gap@tools.ietf.org" Thread-Topic: [mpls] Conditional IPR poll on draft-ietf-mpls-ipv6-only-gap Thread-Index: AQHPp1NR65NyU6oFTkuj3JTZElNFRJuva7UAgABzwQCAANlugIAAItaw Date: Fri, 25 Jul 2014 14:35:35 +0000 Message-ID: <52B0D42F4BADB144B850705C4549F6EA214D9A67@dfweml703-chm.china.huawei.com> References: <53D1250D.3010704@pi.nu> <53D13450.6090903@pi.nu> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.47.135.109] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/ESlDOz1I2di4ijR8dnuOlUOr6nI Subject: Re: [mpls] Conditional IPR poll on draft-ietf-mpls-ipv6-only-gap X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 25 Jul 2014 14:35:45 -0000 I am not aware of any IPR related to draft-ietf-mpls-ipv6-only-gap. Thanks, Rajiv On 2014-07-24, 12:29 PM, "Loa Andersson" wrote: >Carlos, > >tnx - yes I made a copy past mistake (again :( ), >the document we are asking about is draft-ietf-mpls-ipv6-only-gap. > >/Loa > >On 2014-07-24 17:34, Carlos Pignataro (cpignata) wrote: >> Loa, >> >> I am not aware of any IPR that applies to draft-ietf-mpls-ipv6-only-gap. >> >> [please note you list a different draft in your question below, but I >> assume that is a typo] >> >> Thanks, >> >> Carlos. >> >> -----Original Message----- >> From: Loa Andersson >> Date: Thursday, July 24, 2014 at 11:23 AM >> To: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" >> , Martin Vigoureux >> , >> "draft-ietf-mpls-ipv6-only-gap@tools.ietf.org" >> >> Subject: Conditional IPR poll on draft-ietf-mpls-ipv6-only-gap >> Resent-From: >> Resent-To: Carlos Pignataro , Wes George >> , , Loa Andersson >> , Ross Callon , Martin Vigoureux >> >> Resent-Date: Thursday, July 24, 2014 at 11:24 AM >> >>> Working Group, >>> >>> The editors/authors of draft-ietf-mpls-ipv6-only-gap has told the >>> wg chairs that the draft is ready working group last call. >>> >>> It is less than 4 months since we did the IPR poll on the individual >>> draft and the changes has not been such that we think that a new IPR >>> poll that requires the responses form editors/authors/contributors are >>> necessary, with less than that they have new information. >>> >>> Are you aware of any IPR that applies to draft-akiya-mpls-entropy- >>> lsp-ping? >>> >>> If so, has this IPR been disclosed in compliance with IETF IPR rules >>> (see RFCs 3979, 4879, 3669 and 5378 for more details). >>> >>> Currently there are no IPR disclosures that relates to this document. >>> >>> If you are an editor/author/contributor or are the MPLS WG email list, >>> then please explicitly respond only if you are aware of any >>> IPR that has not yet been disclosed in conformance with IETF rules. >>> >>> Thanks, Loa >>> (as MPLS WG co-chair) >>> -- >>> >>> >>> Loa Andersson email: loa@mail01.huawei.com >>> Senior MPLS Expert loa@pi.nu >>> Huawei Technologies (consultant) phone: +46 739 81 21 64 >> > >--=20 > > >Loa Andersson email: loa@mail01.huawei.com >Senior MPLS Expert loa@pi.nu >Huawei Technologies (consultant) phone: +46 739 81 21 64 > >_______________________________________________ >mpls mailing list >mpls@ietf.org >https://www.ietf.org/mailman/listinfo/mpls _______________________________________________ mpls mailing list mpls@ietf.org https://www.ietf.org/mailman/listinfo/mpls From nobody Fri Jul 25 08:44:41 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2F3D31A03A6; Fri, 25 Jul 2014 08:44:39 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.3 X-Spam-Level: X-Spam-Status: No, score=-1.3 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, J_CHICKENPOX_16=0.6, RP_MATCHES_RCVD=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id WOClUs-0uWjh; Fri, 25 Jul 2014 08:44:37 -0700 (PDT) Received: from cappuccino.rob.sh (cappuccino.rob.sh [IPv6:2a03:9800:10:4c::cafe:b00c]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id EFB931A02EC; Fri, 25 Jul 2014 08:44:35 -0700 (PDT) Received: from [31.133.183.226] (helo=dhcp-b7e2.meeting.ietf.org) by cappuccino.rob.sh with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1XAhfb-0002NA-Um; Fri, 25 Jul 2014 16:44:32 +0100 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Content-Type: multipart/alternative; boundary="Apple-Mail=_66F2A3F9-0623-40ED-892E-03E4F525E8AB" From: Rob Shakir In-Reply-To: Date: Fri, 25 Jul 2014 11:44:26 -0400 Message-Id: References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> <820F3138-D28A-47C6-AB0B-27AB3466D65C@rob.sh> To: Robert Raszuk X-Mailer: Apple Mail (2.1878.6) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/jhhlcCMzHWPk9q-CoRENlaZtyC8 Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 25 Jul 2014 15:44:39 -0000 --Apple-Mail=_66F2A3F9-0623-40ED-892E-03E4F525E8AB Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 Hi Robert, On 24 Jul 2014, at 16:21, Robert Raszuk wrote: > I see your interpretation and where it could be confusing. You have = clearly went beyond my boldest intentions :)=20 Thanks for the clarification. > > =46rom what I comprehend, you are saying that we define=20 > > that a single SID maps to N labels. >=20 > Nope. That is perhaps key difference.=20 >=20 > My proposal is that node advertises block of Node-SIDs which in turn = map 1:1 to MPLS labels. The block of Node-SIDs as as big as largest = expected number of parallel links.=20 Operationally =97 this doesn=92t seem ideal to me. AIUI, If we have some = forwarding issue between two LSRs, then we might end up with partial = reachability if a subset of the paths do not have correct LFIB entries = throughout the network. It introduces a requirement, where failure = detection is required, to run N different OAM probes to be able to = monitor reachability (one for each Node-SID assigned to the remote = device - even in cases where we have 1 available path). I think the question for the MPLS WG here is whether there is any = appetite to introduce a new means by which entropy in MPLS networks is = introduced. We already have Entropy Label which has been published and = implemented. The question to me seems to be why we need anything else. = Fewer solutions seems optimal :-) Cheers, r. > Best, > r. >=20 >=20 >=20 >=20 >=20 >=20 > On Thu, Jul 24, 2014 at 8:31 PM, Rob Shakir wrote: > Hi Robert, >=20 > On 24 Jul 2014, at 03:21, Robert Raszuk wrote: >=20 > > > > Therefor an alternative of using any form of entropy labels in data = plane all together would be to allocate a SID blocks (say 64 or 128 = wide) and allow SPRING header imposition to use such pools of SIDs per = group of flows to effectively allow for efficient load balancing in the = network. >=20 > Sorry, maybe I=92m missing something here, but I found your message a = little cryptic. >=20 > =46rom what I comprehend, you are saying that we define that a single = SID maps to N labels. These labels are split somehow into a =93forwarding=94= and =93hash=94 value. Simplistically, this could say that we have the = first 12 bits as the =93forwarding=94 and the bottom 8 as the =93hash=94 = value. >=20 > e.g. Node A advertises an Adj-SID with value 0b00000101000 (40), = anything that is in the range 0b0000010100000000000 (10240) - = 0b0000010100011111111 (10495) has the same forwarding behaviour, but the = last 8 bits are used to hash (allowing 256 different hash-able objects). >=20 > If I understood right - then this seems to have a number of challenges = to me: >=20 > - For Node-SIDs, we now must sterilise the SRGB to be as wide as = (number of required entries)*(number of hash-able objects required) - = which means that we must be able to determine a label block that can be = used for this. > - We reduce the size of the label space from 20-bits to a smaller = value - this might be a material concern in cases where we have many = other labels that are allocated on a device (per-prefix label allocation = within an L3VPN environment that has many prefixes might be a concern?). > - We need every device in the network to comprehend this new format of = label allocation and imposition - such that we do not increase the = number of forwarding entries that are required (as Stephane and Kireeti = have observed). This is problematic where we have limited LFIB already = since instead of programming a number of LFIB entries O(the number of = labelled endpoints) then we instead need to have O(number of labelled = endpoints * number of hashable objects). >=20 > Equally, I think the assertion that you have made is that deeper EL is = not =93easily supported by most of [today=92s] shipping routers=94. I = think that we need to determine whether this is really the case =97 = given that MPLS WG has standardised EL we need to figure *why* a change = from this is required =97 which is (I guess) the intention of the draft = we=92re discussing here. *If* we conclude that none of the options that = are presented using existing technology are suitable, then potentially = then we can look at new solutions. >=20 > If my reading of your mail is completely whacky, then please ignore = the above - and a clarifying example would be greatly appreciated. >=20 > thx, > r. >=20 > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring >=20 --Apple-Mail=_66F2A3F9-0623-40ED-892E-03E4F525E8AB Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252 Hi = Robert,

On 24 Jul 2014, at 16:21, Robert Raszuk <robert@raszuk.net> = wrote:

I see your = interpretation and where it could be confusing. You have clearly went = beyond my boldest intentions = :) 

Thanks for the = clarification.

> =46rom what I comprehend, you are saying that we = define 
> that a single SID maps to N = labels.

Nope. That is perhaps key = difference. 

My proposal is that node advertises block of Node-SIDs which = in turn map 1:1 to MPLS labels. The block of Node-SIDs as as big as = largest expected number of parallel links. 

Operationally =97 this doesn=92t = seem ideal to me. AIUI, If we have some forwarding issue between two = LSRs, then we might end up with partial reachability if a subset of the = paths do not have correct LFIB entries throughout the network. It = introduces a requirement, where failure detection is required, to run N = different OAM probes to be able to monitor reachability (one for each = Node-SID assigned to the remote device - even in cases where we have 1 = available path).

I think the question for the = MPLS WG here is whether there is any appetite to introduce a new means = by which entropy in MPLS networks is introduced. We already have Entropy = Label which has been published and implemented. The question to me seems = to be why we need anything else. Fewer solutions seems optimal = :-)

Cheers,
r.



Best,
r.






On Thu, Jul 24, 2014 at 8:31 PM, Rob Shakir <rjs@rob.sh> wrote:
Hi Robert,

On 24 Jul 2014, at 03:21, Robert Raszuk <robert@raszuk.net> wrote:

>
> Therefor an alternative of using any form of entropy labels in data = plane all together would be to allocate a SID blocks (say 64 or 128 = wide) and allow SPRING header imposition to use such pools of SIDs per = group of flows to effectively allow for efficient load balancing in the = network.

Sorry, maybe I=92m missing something here, but I found your = message a little cryptic.

=46rom what I comprehend, you are saying that we define that a single = SID maps to N labels. These labels are split somehow into a =93forwarding=94= and =93hash=94 value. Simplistically, this could say that we have the = first 12 bits as the =93forwarding=94 and the bottom 8 as the =93hash=94 = value.

e.g. Node A advertises an Adj-SID with value 0b00000101000 (40), = anything that is in the range 0b0000010100000000000 (10240) - = 0b0000010100011111111 (10495) has the same forwarding behaviour, but the = last 8 bits are used to hash (allowing 256 different hash-able = objects).

If I understood right - then this seems to have a number of challenges = to me:

- For Node-SIDs, we now must sterilise the SRGB to be as wide as (number = of required entries)*(number of hash-able objects required) - which = means that we must be able to determine a label block that can be used = for this.
- We reduce the size of the label space from 20-bits to a smaller value = - this might be a material concern in cases where we have many other = labels that are allocated on a device (per-prefix label allocation = within an L3VPN environment that has many prefixes might be a = concern?).
- We need every device in the network to comprehend this new format of = label allocation and imposition - such that we do not increase the = number of forwarding entries that are required (as Stephane and Kireeti = have observed). This is problematic where we have limited LFIB already = since instead of programming a number of LFIB entries O(the number of = labelled endpoints) then we instead need to have O(number of labelled = endpoints * number of hashable objects).

Equally, I think the assertion that you have made is that deeper EL is = not =93easily supported by most of [today=92s] shipping routers=94. I = think that we need to determine whether this is really the case =97 = given that MPLS WG has standardised EL we need to figure *why* a change = from this is required =97 which is (I guess) the intention of the draft = we=92re discussing here. *If* we conclude that none of the options that = are presented using existing technology are suitable, then potentially = then we can look at new solutions.

If my reading of your mail is completely whacky, then please ignore the = above - and a clarifying example would be greatly appreciated.

thx,
r.

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= --Apple-Mail=_66F2A3F9-0623-40ED-892E-03E4F525E8AB-- From nobody Fri Jul 25 09:16:46 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 432111A02D9; Fri, 25 Jul 2014 09:16:42 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.277 X-Spam-Level: X-Spam-Status: No, score=-1.277 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FM_FORGED_GMAIL=0.622, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id CtWvSOw1tFUG; Fri, 25 Jul 2014 09:16:41 -0700 (PDT) Received: from mail-ig0-x22f.google.com (mail-ig0-x22f.google.com [IPv6:2607:f8b0:4001:c05::22f]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id E856D1A0337; Fri, 25 Jul 2014 09:16:40 -0700 (PDT) Received: by mail-ig0-f175.google.com with SMTP id uq10so1032079igb.8 for ; Fri, 25 Jul 2014 09:16:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=aoa+EfFgmEN+yD88szATKRfAOMzrtIS6GWNI02goQ0w=; b=oWBmLXVGPRQKgh6WrAD13m02NQ5sEsT11CO09ng5f7AOFj82HyhtMEyGBKhd5/2rqb G7p0QvtQzI+uPRESNQn+yYEReK+B1S3oPMtGYJ+nzXlak6gA5eD5DWLBDeNkt6jUpt7z 8IM56t4jl98U/xljlBf9LhLbV3X4d3F8BKVNFkAeceuSIFKTuBPqS/JXy2JIhLozYtVw bJD/qsb6ZQR/pdIkKa4y7n2P8FWe4CaOliinbymiQh6tITYXxJdbTt/QAjhk2uOENH83 kVL4WqamXhgY7Q+KIxS5JGlX+dtEAXFhpVc5Unj4IaX+b1lLYqhVraKr5Z7OdWShFntg jG1A== MIME-Version: 1.0 X-Received: by 10.42.240.20 with SMTP id ky20mr3978655icb.97.1406305000096; Fri, 25 Jul 2014 09:16:40 -0700 (PDT) Sender: rraszuk@gmail.com Received: by 10.64.128.99 with HTTP; Fri, 25 Jul 2014 09:16:39 -0700 (PDT) In-Reply-To: References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> <820F3138-D28A-47C6-AB0B-27AB3466D65C@rob.sh> Date: Fri, 25 Jul 2014 18:16:39 +0200 X-Google-Sender-Auth: Tlqh-LVqmx6o_FVSW0z2CnBXXoU Message-ID: From: Robert Raszuk To: Rob Shakir Content-Type: multipart/alternative; boundary=001a113328f2fa07d504ff06e5e8 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/CCsp0TpN_ix3euMbTh_Vut4pcUA Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 25 Jul 2014 16:16:42 -0000 --001a113328f2fa07d504ff06e5e8 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable =E2=80=8BHi Rob,=E2=80=8B > =E2=80=8B > It introduces a requirement, where failure detection is required, to run = N > different OAM probes to be able to monitor reachability (one for each > Node-SID assigned to the remote device - even in cases where we have 1 > available path). > =E2=80=8BWhen you get today /24 IP prefix =E2=80=8Bdo you monitor reachabil= ity to all 255 host addresses within this prefix or to the next hop which advertised it ? Likewise when you get a block of SID monitoring OEM to the node which advertised it seems sufficient to me. I assume there is still IGP there and router_id or s-bfd. Comparing two options it seems that mpls hardware is to much faster support match on subset of MPLS label bits vs ability to look over long chain of labels for ELI/EL. I think the question for the MPLS WG here is whether there is any appetite > to introduce a new means by which entropy in MPLS networks is introduced. > We already have Entropy Label which has been published and implemented. T= he > question to me seems to be why we need anything else. Fewer solutions see= ms > optimal :-) > =E2=80=8BOf course fewer is better provided that: a) fewer works b) is architecturally sound Moreover SID/label block vs entropy labels is not apple to apple comparison. Former is just control plane solution, does not insert anything extra into each packet while latter is based on data plane modifications and new hardware support to either handle Eiffel Tower of label stack or tricks with search along the stack for ELI/EL tupel(s). Cheers, R. =E2=80=8B --001a113328f2fa07d504ff06e5e8 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
=E2=80=8BHi Rob,=E2=80=8B
=C2=A0
= =E2=80=8B
It introduces a requirement, where failure detection is req= uired, to run N different OAM probes to be able to monitor reachability (on= e for each Node-SID assigned to the remote device - even in cases where we = have 1 available path).

=E2=80=8BWhen you get today /24 IP prefix =E2=80=8Bdo you monitor rea= chability to all 255 host addresses within this prefix or to the next hop w= hich advertised it ?=C2=A0

Likewise when you= get a block of SID monitoring OEM to the node which advertised it seems su= fficient to me. I assume there is still IGP there and router_id or s-bfd.

Comparing two opt= ions it seems that mpls hardware is to much faster support match on subset = of MPLS label bits vs ability to look over long chain of labels for ELI/EL.=

I think the question for= the MPLS WG here is whether there is any appetite to introduce a new means= by which entropy in MPLS networks is introduced. We already have Entropy L= abel which has been published and implemented. The question to me seems to = be why we need anything else. Fewer solutions seems optimal :-)

=E2=80=8BOf course fewer is better provided that:

a) fewer works
b) is architecturally sound

Moreover SID/labe= l block vs entropy labels is not apple to apple comparison.=C2=A0

Former is just co= ntrol plane solution, does not insert anything extra into each packet while= latter is based on data plane modifications and new hardware support to ei= ther handle Eiffel Tower of label stack or tricks with search along the sta= ck for ELI/EL tupel(s).

Cheers,
=
R.
=E2=80=8B
--001a113328f2fa07d504ff06e5e8-- From nobody Sat Jul 26 05:28:58 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A48C91B27A0 for ; Sat, 26 Jul 2014 05:28:55 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 5KU1ya8ZyHBi for ; Sat, 26 Jul 2014 05:28:53 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A34661B2794 for ; Sat, 26 Jul 2014 05:28:53 -0700 (PDT) Received: from [172.16.57.142] (unknown [206.47.221.210]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id BBC5B1802B19; Sat, 26 Jul 2014 14:28:51 +0200 (CEST) Message-ID: <53D39F0D.6050209@pi.nu> Date: Sat, 26 Jul 2014 14:29:01 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: draft-cui-mpls-tp-mfp-use-case-and-requirements@tools.ietf.org, "mpls@ietf.org" , c-sai@bx.jp.nec.com Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/qyQTY7WQVWjs3wfnTn4PCe8UMEQ Subject: [mpls] question on draft-cui-mpls-tp-mfp-use-case-and-requirements X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 26 Jul 2014 12:28:55 -0000 Zhenlong, draft-cui-mpls-tp-mfp-use-case-and-requirements in the mpls wg yesterday. I had a question that was not very clear, I try to repeat it here. In slide 3 you say hat that: "In the m:n architecture, the m backup paths(p1,p2) are sharing backup resource for n working paths, as shown in the following example(modeling)." In slide 5 you say: " The m backup paths should be sharing backup resource for n working paths, where n>=m." It is not entirely clear if you say that n being a lower number is an cost optimization or if it is part of the architecture. From a strictly architectural could n be lower, equal or higher than m, i.e. you can protect m working paths with m+x protecting paths. Where x can be any positive or negative number (as long as it give you at least some resources for protection). /Loa -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Sat Jul 26 06:59:46 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id CAE1E1B281E for ; Sat, 26 Jul 2014 06:59:45 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id LPYzw9wyDzyK for ; Sat, 26 Jul 2014 06:59:44 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 24A661A023F for ; Sat, 26 Jul 2014 06:59:44 -0700 (PDT) Received: from [172.16.57.142] (unknown [206.47.221.210]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 6C82618013DA; Sat, 26 Jul 2014 15:59:42 +0200 (CEST) Message-ID: <53D3B458.8010900@pi.nu> Date: Sat, 26 Jul 2014 15:59:52 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls@ietf.org" References: <067e01cfa83a$54cca120$fe65e360$@olddog.co.uk> In-Reply-To: <067e01cfa83a$54cca120$fe65e360$@olddog.co.uk> X-Forwarded-Message-Id: <067e01cfa83a$54cca120$fe65e360$@olddog.co.uk> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/0S0IuwrSajtbNmwZpq7TVwrP2hI Cc: "mpls-chairs@tools.ietf.org" Subject: [mpls] Fwd: Summary of RTG Tuning as presented to IESG/IAB X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 26 Jul 2014 13:59:46 -0000 Working Group, You should have heard that the routing area is going through a tuning process, part of that is that about half of the working groups will effected by an re-org; for MPLS this means that the work we have done for RSVP-TE packet and sometimes generic RSVP-TE will be moved a new TE working group. Below you find Adrian's summary of the re-tuning discussions to the IAB and IESG. There are also slides from the RTG Area meeting to be found here: http://www.ietf.org/proceedings/90/slides/slides-90-rtgarea-4.ppt I expect ADs to ask us to start working on the charter for the new mols wg, possibly based on a proposal from them. /Loa for the mpls wg chairs -------- Original Message -------- Subject: Summary of RTG Tuning as presented to IESG/IAB Date: Fri, 25 Jul 2014 19:57:47 +0100 From: Adrian Farrel Reply-To: adrian@olddog.co.uk To: Hi, I just presented a summary of our discussions about tuning the work-split in Routing to bring the IESG and IAB up to speed. Here it is for your information. Do please continue to discuss and share this as you see fit. Thanks for all the input received so far. Remember that until these changes are implemented, all work should continue as currently. Adrian ==== Wide discussion and some sort of general agreementishiness - Mailing lists - Chairs/Directorate lunch - Area meeting - Corridors ADs' opinions and proposals were modified by discussion All current work remains in the Area All WG I-Ds will remain as WG I-Ds No new work at the moment Same number of WGs in the Area 12 WGs completely unchanged 2 minor tweaks - PIM has more multicast oversight - RTGWG has stronger Dispatch element Merge and shuffle to achieve 6 WGs - BGP Enabled ServiceS (L3VPN, L2VPN, NVO3) BESS - Pseudowire- and LDP-enabled Services (L2VPN, PWE3) PALS - Traffic Engineering Architecture and Signaling (MPLS, CCAMP) TEAS - CCAMP (CCAMP minus TEAS) - MPLS (MPLS minus TEAS) - NVO3 (NVO3 minus BESS) Plan of action - Starting to think about chairs now - Starting to draft charters now - Plan to have changes up and running before IETF-91 _______________________________________________ routing-discussion mailing list routing-discussion@ietf.org https://www.ietf.org/mailman/listinfo/routing-discussion From nobody Sat Jul 26 12:56:24 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 705961A0091 for ; Sat, 26 Jul 2014 12:56:23 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id yrbDitA7N44O for ; Sat, 26 Jul 2014 12:56:21 -0700 (PDT) Received: from alln-iport-1.cisco.com (alln-iport-1.cisco.com [173.37.142.88]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 4BCE91A024F for ; Sat, 26 Jul 2014 12:56:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2058; q=dns/txt; s=iport; t=1406404580; x=1407614180; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=uxPbPtVcN+JuGrQS8Ida4qeA8bJRZyWkYhEfcbvqSU0=; b=mj8aBQZ7hgc0yK9+2VwoVwpsP4IYOfYYkNxzfkHoteMvpeMPqTmxY6Xq FnBZn1neYEAzfDUFkiCO0CW6o3h/x51qSQT3Gsu23vR/WF6eQFxl2N/rN xrt8uOGG8IX0lAStxk+v7MwNwyLWaj+Gmy6ZEQEwlRSfhn+0p/PfxqalW o=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AoQFAKEH1FOtJA2E/2dsb2JhbABYgw5SUwQEy1yHQwGBChZ3hAQBAQR3AhACAQhGMiUCBA4FCYg5CAW9FhePGTMHhEoFijeRFYFSknqDSWyBRQ X-IronPort-AV: E=Sophos;i="5.01,737,1400025600"; d="scan'208";a="64237665" Received: from alln-core-10.cisco.com ([173.36.13.132]) by alln-iport-1.cisco.com with ESMTP; 26 Jul 2014 19:56:19 +0000 Received: from xhc-rcd-x14.cisco.com (xhc-rcd-x14.cisco.com [173.37.183.88]) by alln-core-10.cisco.com (8.14.5/8.14.5) with ESMTP id s6QJuJt4025635 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Sat, 26 Jul 2014 19:56:19 GMT Received: from xmb-aln-x08.cisco.com ([169.254.3.252]) by xhc-rcd-x14.cisco.com ([173.37.183.88]) with mapi id 14.03.0123.003; Sat, 26 Jul 2014 14:56:19 -0500 From: "Tarek Saad (tsaad)" To: "mpls@ietf.org" Thread-Topic: New Version Notification for draft-tsaad-mpls-p2mp-loose-path-reopt-03.txt Thread-Index: AQHPpPT0l07hHxK9+EqL2VD38Au4Hpuy3iyA Date: Sat, 26 Jul 2014 19:56:18 +0000 Message-ID: References: <20140721150224.16376.31117.idtracker@ietfa.amsl.com> In-Reply-To: <20140721150224.16376.31117.idtracker@ietfa.amsl.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.4.3.140616 x-originating-ip: [10.86.252.168] Content-Type: text/plain; charset="iso-8859-1" Content-ID: <7C6F2DF1B5AE6644BB59379FD63307E4@emea.cisco.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/U795CVsfMK5qOE1nOa3kPLlGbjY Cc: "draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org" , "mpls-chairs@tools.ietf.org" Subject: Re: [mpls] New Version Notification for draft-tsaad-mpls-p2mp-loose-path-reopt-03.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 26 Jul 2014 19:56:23 -0000 Working Group, We=B9ve uploaded version -03 of the draft (accessible below). The authors are soliciting any comments that can be sent the mailer list. Regards, Tarek On 2014-07-21, 11:02 AM, "internet-drafts@ietf.org" wrote: > >A new version of I-D, draft-tsaad-mpls-p2mp-loose-path-reopt-03.txt >has been successfully submitted by Tarek Saad and posted to the >IETF repository. > >Name: draft-tsaad-mpls-p2mp-loose-path-reopt >Revision: 03 >Title: Reoptimization of Point-to-Multipoint Traffic Engineering Loosely >Routed LSPs >Document date: 2014-07-21 >Group: mpls >Pages: 11 >URL: =20 >http://www.ietf.org/internet-drafts/draft-tsaad-mpls-p2mp-loose-path-reopt >-03.txt >Status: =20 >https://datatracker.ietf.org/doc/draft-tsaad-mpls-p2mp-loose-path-reopt/ >Htmlized: =20 >http://tools.ietf.org/html/draft-tsaad-mpls-p2mp-loose-path-reopt-03 >Diff: =20 >http://www.ietf.org/rfcdiff?url2=3Ddraft-tsaad-mpls-p2mp-loose-path-reopt-= 03 > >Abstract: > For a Traffic Engineered (TE) point-to-multipoint (P2MP) Label > Switched Path (LSP), it is preferable in some cases to re-evaluate > and re-optimize the entire P2MP-TE LSP by re-signaling all its S2L > sub-LSP(s). Existing mechanisms allow the path re-evaluation and the > signaling of a the notification of preferred path exists for a single > S2L sub-LSP only. > > This document defines RSVP-TE signaling extensions to allow an > ingress Label Switching Router (LSR) of a P2MP-TE LSP to trigger the > re-evaluation of the entire LSP tree containing one or more S2L sub- > LSPs whose paths are loose (or abstract) hop expanded, and for a mid- > point LSR to signal to the ingress LSR that a better tree exists for > the entire P2MP-TE LSP. > > =20 > =20 > > >Please note that it may take a couple of minutes from the time of >submission >until the htmlized version and diff are available at tools.ietf.org. > >The IETF Secretariat > From nobody Sat Jul 26 13:47:56 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 165731A03AD for ; Sat, 26 Jul 2014 13:47:55 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id IxvUxBo10onP for ; Sat, 26 Jul 2014 13:47:53 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id CE4F61A03A8 for ; Sat, 26 Jul 2014 13:47:52 -0700 (PDT) Received: from [172.16.57.142] (unknown [206.47.221.210]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 10C2918013DA; Sat, 26 Jul 2014 22:47:50 +0200 (CEST) Message-ID: <53D41400.9030805@pi.nu> Date: Sat, 26 Jul 2014 22:48:00 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls@ietf.org" Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/ZXmaGDt4elsc4HfCOCdd-0zZXE8 Cc: "draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org" , "mpls-chairs@tools.ietf.org" Subject: [mpls] IPR poll on draft-tsaad-mpls-p2mp-loose-path-reopt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 26 Jul 2014 20:47:55 -0000 Working Group, The authors of draft-tsaad-mpls-p2mp-loose-path-reopt have told us that the draft is ready to be accepted as a working group document. Before we do poll to see if we have consensus to accept the document as a working group document we want to do an IPR poll on the document. This mail starts that IPR poll. Are you aware of any IPR that applies to draft-tsaad-mpls-p2mp-loose- path-reopt? If so, has this IPR been disclosed in compliance with IETF IPR rules (see RFCs 3979, 4879, 3669 and 5378 for more details). Currently there are one IPR disclosures that relates to this document. If you are listed as a document author or contributor please respond to this email regardless of whether or not you are aware of any relevant IPR. *The response needs to be sent to the MPLS wg mailing list.* The document will not advance to the next stage until a response has been received from each author and contributor. If you are on the MPLS WG email list but are not listed as an author or contributor, then please explicitly respond only if you are aware of any IPR that has not yet been disclosed in conformance with IETF rules. Thanks, Loa (as MPLS WG co-chair) -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Sat Jul 26 15:04:54 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 628C01A02D1; Sat, 26 Jul 2014 15:04:50 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id CoGR3F76hJn8; Sat, 26 Jul 2014 15:04:48 -0700 (PDT) Received: from cappuccino.rob.sh (cappuccino.rob.sh [IPv6:2a03:9800:10:4c::cafe:b00c]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D083C1A0601; Sat, 26 Jul 2014 15:04:46 -0700 (PDT) Received: from [199.119.128.122] (helo=[10.0.1.35]) by cappuccino.rob.sh with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1XBA54-0004JJ-Hg; Sat, 26 Jul 2014 23:04:42 +0100 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Content-Type: multipart/alternative; boundary="Apple-Mail=_9D2A66BA-48D6-46ED-8A93-C7BE2CF1FCB4" From: Rob Shakir In-Reply-To: Date: Sat, 26 Jul 2014 18:04:37 -0400 Message-Id: References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> <820F3138-D28A-47C6-AB0B-27AB3466D65C@rob.sh> To: Robert Raszuk X-Mailer: Apple Mail (2.1878.6) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/RqfXQxwdufhqYYw0qYH84osNsVw Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 26 Jul 2014 22:04:50 -0000 --Apple-Mail=_9D2A66BA-48D6-46ED-8A93-C7BE2CF1FCB4 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hi Robert, On 25 Jul 2014, at 12:16, Robert Raszuk wrote: > =E2=80=8BHi Rob,=E2=80=8B > =20 > =E2=80=8B It introduces a requirement, where failure detection is = required, to run N different OAM probes to be able to monitor = reachability (one for each Node-SID assigned to the remote device - even = in cases where we have 1 available path). >=20 > =E2=80=8BWhen you get today /24 IP prefix =E2=80=8Bdo you monitor = reachability to all 255 host addresses within this prefix or to the next = hop which advertised it ?=20 >=20 > Likewise when you get a block of SID monitoring OEM to the node which = advertised it seems sufficient to me. I assume there is still IGP there = and router_id or s-bcd. I don=E2=80=99t think this is analogous =E2=80=94 there is only one = forwarding entry for a /24 if it has a single next-hop. With the = multiple SIDs (and 1:1 SID to label mapping) then there will be multiple = LFIB entries. BR, r. --Apple-Mail=_9D2A66BA-48D6-46ED-8A93-C7BE2CF1FCB4 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 Hi = Robert,

On 25 Jul 2014, at 12:16, Robert Raszuk <robert@raszuk.net> = wrote:

=E2=80=8BHi = Rob,=E2=80=8B
 
=E2=80=8B It introduces a requirement, where failure detection is required, to = run N different OAM probes to be able to monitor reachability (one for = each Node-SID assigned to the remote device - even in cases where we = have 1 available path).

=E2=80=8BWhe= n you get today /24 IP prefix =E2=80=8Bdo you monitor reachability to = all 255 host addresses within this prefix or to the next hop which = advertised it ? 

Likewise = when you get a block of SID monitoring OEM to the node which advertised = it seems sufficient to me. I assume there is still IGP there and = router_id or = s-bcd.

I = don=E2=80=99t think this is analogous =E2=80=94 there is only one = forwarding entry for a /24 if it has a single next-hop. With the = multiple SIDs (and 1:1 SID to label mapping) then there will be multiple = LFIB = entries.

BR,
r.


= --Apple-Mail=_9D2A66BA-48D6-46ED-8A93-C7BE2CF1FCB4-- From nobody Sat Jul 26 15:07:38 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 9DC4A1A07A1; Sat, 26 Jul 2014 15:07:31 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.277 X-Spam-Level: X-Spam-Status: No, score=-1.277 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FM_FORGED_GMAIL=0.622, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Ja1yLA_v0Ulo; Sat, 26 Jul 2014 15:07:30 -0700 (PDT) Received: from mail-ie0-x22f.google.com (mail-ie0-x22f.google.com [IPv6:2607:f8b0:4001:c03::22f]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id F32111A0769; Sat, 26 Jul 2014 15:07:29 -0700 (PDT) Received: by mail-ie0-f175.google.com with SMTP id x19so4979375ier.6 for ; Sat, 26 Jul 2014 15:07:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=xhex//3FqGbvfuHp0dfho7J8qJm6EyP6MQTXblgxYp8=; b=STOXJe612NOH2v8TyRl8oj77gBwO3OFo3evbYBT+Un9glGNhG1TD8EdeQiWrIhM1hs S6pC4C4rtrpPVTe8CBG6HiJxAq2zui3s5UVnfFAaTXV7v9JpmjwhBEEvOBn+4cT7bp+l btXOPyf555LMaGSwT2oF7IqjYZZ6iLtCNcoRt2FRfOX1x7CWIaxky9ot3uaUNbdIvxFk JE7FWmRtpOKN4+HtYbwaXxMIaTP0nisY8xffJm7JDmx+I/6Kx/o3EVIlt6om2C0iO+uO YUxY3IWJes6wF0U0WJQvbls66D/gM89Z6LlXP+7ORSAPCHyy2ith6A869Q6gjXImAZho n/Og== MIME-Version: 1.0 X-Received: by 10.50.79.135 with SMTP id j7mr17936399igx.9.1406412449341; Sat, 26 Jul 2014 15:07:29 -0700 (PDT) Sender: rraszuk@gmail.com Received: by 10.64.128.99 with HTTP; Sat, 26 Jul 2014 15:07:29 -0700 (PDT) In-Reply-To: References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> <820F3138-D28A-47C6-AB0B-27AB3466D65C@rob.sh> Date: Sun, 27 Jul 2014 00:07:29 +0200 X-Google-Sender-Auth: PqtjvJiFOiYgXI3vk7jWRI9TDKY Message-ID: From: Robert Raszuk To: Rob Shakir Content-Type: multipart/alternative; boundary=089e0122a754736a6e04ff1fea83 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/JV0pJST26fxAj08kYXID9F7I3yc Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 26 Jul 2014 22:07:32 -0000 --089e0122a754736a6e04ff1fea83 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable > > I don=E2=80=99t think this is analogous =E2=80=94 there is only one forwa= rding entry for a > /24 if it has a single next-hop. With the multiple SIDs (and 1:1 SID to > label mapping) then there will be multiple LFIB entries. > =E2=80=8BNope. The entire idea is to have a single LFIB entry as well. Best, r. =E2=80=8B --089e0122a754736a6e04ff1fea83 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
I = don=E2=80=99t think this is analogous =E2=80=94 there is only one forwardin= g entry for a /24 if it has a single next-hop. With the multiple SIDs (and = 1:1 SID to label mapping) then there will be multiple LFIB entries.

= =E2=80=8BNope.=C2=A0

The entire idea is to have a single LFIB = entry as well.=C2=A0

Best,
r.

=E2=80=8B

--089e0122a754736a6e04ff1fea83-- From nobody Sat Jul 26 15:14:30 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 351991A0769; Sat, 26 Jul 2014 15:14:28 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id NmiSVcezsa0y; Sat, 26 Jul 2014 15:14:25 -0700 (PDT) Received: from cappuccino.rob.sh (cappuccino.rob.sh [IPv6:2a03:9800:10:4c::cafe:b00c]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 39D421A0601; Sat, 26 Jul 2014 15:14:23 -0700 (PDT) Received: from [199.119.128.122] (helo=[10.0.1.35]) by cappuccino.rob.sh with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1XBAER-0004KQ-3F; Sat, 26 Jul 2014 23:14:23 +0100 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Content-Type: multipart/alternative; boundary="Apple-Mail=_433BD40B-196B-487E-8C69-680CAAA90006" From: Rob Shakir In-Reply-To: Date: Sat, 26 Jul 2014 18:14:14 -0400 Message-Id: References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> <820F3138-D28A-47C6-AB0B-27AB3466D65C@rob.sh> To: Robert Raszuk X-Mailer: Apple Mail (2.1878.6) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/RWrMeoBKIAbJLdWBupgfFT3KuCo Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 26 Jul 2014 22:14:28 -0000 --Apple-Mail=_433BD40B-196B-487E-8C69-680CAAA90006 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 On 26 Jul 2014, at 18:07, Robert Raszuk wrote: > I don=E2=80=99t think this is analogous =E2=80=94 there is only one = forwarding entry for a /24 if it has a single next-hop. With the = multiple SIDs (and 1:1 SID to label mapping) then there will be multiple = LFIB entries. >=20 > =E2=80=8BNope.=20 >=20 > The entire idea is to have a single LFIB entry as well.=20 Again, I=E2=80=99m lost. :-( Perhaps you can expand on how an LSR programs its LFIB such that it has = multiple labels matched with a single entry please? I=E2=80=99m = struggling to comprehend how this fits into the existing = implementations, or can be realised without requiring some = forwarding/entropy split of the 20-bit label as I described before. Kind regards, r. --Apple-Mail=_433BD40B-196B-487E-8C69-680CAAA90006 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8
On 26 Jul 2014, at 18:07, Robert = Raszuk <robert@raszuk.net> = wrote:

I don=E2=80=99t think this is analogous = =E2=80=94 there is only one forwarding entry for a /24 if it has a = single next-hop. With the multiple SIDs (and 1:1 SID to label mapping) = then there will be multiple LFIB entries.

=E2=80=8BNope. 

The entire idea is to have a single LFIB = entry as = well. 

Again= , I=E2=80=99m lost. :-(

Perhaps you can expand = on how an LSR programs its LFIB such that it has multiple labels matched = with a single entry please? I=E2=80=99m struggling to comprehend how = this fits into the existing implementations, or can be realised without = requiring some forwarding/entropy split of the 20-bit label as I = described before.

Kind = regards,
r.

= --Apple-Mail=_433BD40B-196B-487E-8C69-680CAAA90006-- From nobody Sat Jul 26 15:26:04 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id EAA131A03FF; Sat, 26 Jul 2014 15:26:03 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.277 X-Spam-Level: X-Spam-Status: No, score=-1.277 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FM_FORGED_GMAIL=0.622, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id jDJfrPslgMMN; Sat, 26 Jul 2014 15:26:02 -0700 (PDT) Received: from mail-ie0-x235.google.com (mail-ie0-x235.google.com [IPv6:2607:f8b0:4001:c03::235]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B7F6C1A00FC; Sat, 26 Jul 2014 15:26:02 -0700 (PDT) Received: by mail-ie0-f181.google.com with SMTP id rp18so4940598iec.26 for ; Sat, 26 Jul 2014 15:26:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=UhQDSkaQve2ypfnliSbO1zT0qglwwPnqKtZgGekjrUs=; b=yQ3rgcnf1oeNI443vbBnpa9fmOKjxlRWAT8lZnMVndSSzn9/HFSfvr64y3CQuPvodB lj5Xc5vFVcy/AYu8PC3VIdQNYi8TNYLCQGKyAPqNiVeElB5Q1RGPFZTy4Lsfh+zJVjqq Xlez0OePH+NBJAu0SpHfrlEkGZ2AWhQ8w4iPIrDk3RSkyGvxO3Mdo6ZvVl7XK2ObXeIs 4nCXWzwaXRrpB/2hvXtu2tCNm+iZzAuidqk4cimRT1YIn+OWme3iJ82xX20I4pE30kQl ERBub/x95+o6HXySxafsEfex/6gSXl83pJSrxPvt2KyXa4LSvsrsD0yHFKTKa04YpsbF le7g== MIME-Version: 1.0 X-Received: by 10.50.62.80 with SMTP id w16mr17635042igr.21.1406413562125; Sat, 26 Jul 2014 15:26:02 -0700 (PDT) Sender: rraszuk@gmail.com Received: by 10.64.128.99 with HTTP; Sat, 26 Jul 2014 15:26:01 -0700 (PDT) In-Reply-To: References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> <820F3138-D28A-47C6-AB0B-27AB3466D65C@rob.sh> Date: Sun, 27 Jul 2014 00:26:01 +0200 X-Google-Sender-Auth: lQWF5UFBl9BUwpZaOmsqE4ySs6o Message-ID: From: Robert Raszuk To: Rob Shakir Content-Type: multipart/alternative; boundary=047d7bdc0aeac7237104ff202c5e Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/kcZtCemH4lyWTFEeouaCWRu_tlQ Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 26 Jul 2014 22:26:04 -0000 --047d7bdc0aeac7237104ff202c5e Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable > > Perhaps you can expand on how an LSR programs its LFIB such that it has > multiple labels matched with a single entry please? > =E2=80=8BWhen you install a label to LFIB you also pass its depth ie number= of significant bits to match on. Hardware will treat the remaining bits as "do not care". That is pretty basic logical function for any match operation. At least I am quite sure it is much simpler then any other form of search for ELI/EL within the SR deep stack :) I=E2=80=99m struggling to comprehend how this fits into the existing > implementations, or can be realised without requiring some > forwarding/entropy split of the 20-bit label as I described before. > =E2=80=8BThe split I have in mind is passed explicitiely in control plane. = So there is no additional logic required for it. =E2=80=8B =E2=80=8BNow you may rightfully state that this requires an upgrade. Well t= rue but any alternative discussed here requires an upgrade as well. Moreover even support of SR requires an upgrade :) Control plane vs data plane .. EL based solution requires both day one. Label mask does not strictly require any data plane change during the transition period as it could install all atomic labels till the mask support in LFIB is available later. Cheers, R.=E2=80=8B --047d7bdc0aeac7237104ff202c5e Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Perhaps= you can expand on how an LSR programs its LFIB such that it has multiple l= abels matched with a single entry please?

=E2=80=8BW= hen you install a label to LFIB you also pass its depth ie number of signif= icant bits to match on.=C2=A0

Hardware will tre= at the remaining bits as "do not care". That is pretty basic logi= cal function for any match operation.=C2=A0

At least I am qui= te sure it is much simpler then any other form of search for ELI/EL within = the SR deep stack :)

I=E2=80=99m struggling to comprehend how this fits into t= he existing implementations, or can be realised without requiring some forw= arding/entropy split of the 20-bit label as I described before.

=E2=80= =8BThe split I have in mind is passed explicitiely in control plane. So the= re is no additional logic required for it. =E2=80=8B

=E2=80=8BNow you may rightfully stat= e that this requires an upgrade. Well true but any alternative discussed he= re requires an upgrade as well. Moreover even support of SR requires an upg= rade :)

Control plane vs = data plane .. EL based solution requires both day one. Label mask does not = strictly require any data plane change during the transition period as it c= ould install all atomic labels till the mask support in LFIB is available l= ater.

Cheers,
R.=E2=80=8B

--047d7bdc0aeac7237104ff202c5e-- From nobody Sun Jul 27 12:05:33 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id DAFEA1A0080 for ; Sun, 27 Jul 2014 12:05:30 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -114.502 X-Spam-Level: X-Spam-Status: No, score=-114.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Nc6vAQuR2hlk for ; Sun, 27 Jul 2014 12:05:29 -0700 (PDT) Received: from rcdn-iport-1.cisco.com (rcdn-iport-1.cisco.com [173.37.86.72]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 0974C1A0030 for ; Sun, 27 Jul 2014 12:05:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2079; q=dns/txt; s=iport; t=1406487929; x=1407697529; h=from:to:cc:subject:date:message-id: content-transfer-encoding:mime-version; bh=HIXVXbLK1mCFrjSgWiJ0RVsUYVC7BYZV8NpIvc5R23Q=; b=LwALNhuH3W2UqvyBvcDeykqoAVsMnb+r4oVqbgPSgSpWXMgQdRT+v6XH uyxu/0Ic5U7fMBqBofz3NPqP3jmXaz2zWDre53wdC10hlhkX0d1TQuhoP gzyMrL18KqxDbzH5ytjb95tpmbszKdVgDfH5ItxE5XSjF9ENQLhWUIih9 Q=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AiQFAHlM1VOtJV2a/2dsb2JhbABYgmokUlcEy12HRQGBDBZ3hAUBBDo/EgEaEBRCFw8BBA4NARKIJwEMvCoXjxsxgzaBGwWOV6FBg0lsAYFE X-IronPort-AV: E=Sophos;i="5.01,743,1400025600"; d="scan'208";a="342987704" Received: from rcdn-core-3.cisco.com ([173.37.93.154]) by rcdn-iport-1.cisco.com with ESMTP; 27 Jul 2014 19:05:28 +0000 Received: from xhc-aln-x11.cisco.com (xhc-aln-x11.cisco.com [173.36.12.85]) by rcdn-core-3.cisco.com (8.14.5/8.14.5) with ESMTP id s6RJ5S0S012991 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Sun, 27 Jul 2014 19:05:28 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-aln-x11.cisco.com ([173.36.12.85]) with mapi id 14.03.0123.003; Sun, 27 Jul 2014 14:05:28 -0500 From: "Nobo Akiya (nobo)" To: "draft-li-mpls-global-label-usecases@tools.ietf.org" Thread-Topic: Comments on draft-li-mpls-global-label-usecases Thread-Index: Ac+pyGOnOvdR466BTIiQqApCOmu/xg== Date: Sun, 27 Jul 2014 19:05:27 +0000 Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [161.44.212.51] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/YRuY9A_lEbOMb3TILJ6NrTaruAk Cc: "mpls@ietf.org" Subject: [mpls] Comments on draft-li-mpls-global-label-usecases X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 27 Jul 2014 19:05:31 -0000 Hi Authors, The presentation for this document at IETF90 added some use cases. http://www.ietf.org/proceedings/90/slides/slides-90-mpls-13.pptx, Slide 2. Below are my comments on just the new use cases added. =20 1. MPLS OAM for LDP LSP The problem isn't specific to LDP, but SR as well as TE/TP with PHP. Howeve= r, what you need is a label that ingress and egress agree on, which granula= rity is likely at least one label per LSP. Attempting to solve this through= suggested "global label" will unnecessary burn up labels in the "global la= bel space" (i.e. severe scalability problem). In other words, LSP egress al= located context label appears to be simpler and technical superior, IMHO. 2. Service Chaining =09 Why not let SFC folks to do their work, which SFC will then work on the MPL= S data plane without any changes to the MPLS data plane nor architecture, c= ertainly doesn't require any "global label" as this use case is describing.= Unless the SFC WG require the "global label" (which it doesn't) or the MPL= S WG is re-chartered to pick up creation of a tangent SFC solution specific= ally for MPLS, I don't think this use case is valid. 3. Segment Routing The Segment Routing technology is much further down the road (i.e. we even = saw some cool stuff in the Bits-n-Bites at IETF90) and they already have a = solution for SRGB. Even if Segment Routing was using global labels (which i= sn't the case), I'm not sure if there's any value in listing this as a use = case for "global label". I've only had a quick scan of draft-li-mpls-global-label-usecases (and have= n't fully read all the referenced documents), but my immediate reaction was= "are these real use cases?" Perhaps there's a value is re-writing this documents to exclude following c= ategories: - This can become a use case if folks didn't want to use context labels. - This can become a use case if things like this was ever required. - This can become a use case but there are solutions out there already. My 2 yen. Thanks! -Nobo From nobody Sun Jul 27 12:43:02 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id CF6B01A0183; Sun, 27 Jul 2014 12:42:58 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id rDJWofJtHAqj; Sun, 27 Jul 2014 12:42:57 -0700 (PDT) Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 52F1B1A010C; Sun, 27 Jul 2014 12:42:57 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: i-d-announce@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 5.6.2.p2 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <20140727194257.11929.67494.idtracker@ietfa.amsl.com> Date: Sun, 27 Jul 2014 12:42:57 -0700 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/q4JnZV2vYBLxuxVDSImUXuKkw18 Cc: mpls@ietf.org Subject: [mpls] I-D Action: draft-akiya-mpls-lsp-ping-reply-mode-simple-03.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 27 Jul 2014 19:42:59 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF. Title : Label Switched Path (LSP) Ping/Traceroute Reply Mode Simplification Authors : Nobo Akiya George Swallow Carlos Pignataro Loa Andersson Mach(Guoyi) Chen Filename : draft-akiya-mpls-lsp-ping-reply-mode-simple-03.txt Pages : 11 Date : 2014-07-27 Abstract: The Multiprotocol Label Switching (MPLS) Label Switched Path (LSP) Ping and Traceroute use the Reply Mode field to signal the method to be used in the MPLS echo reply. This document adds one value to the Reply Mode field to indicate reverse LSP. This document also adds an optional TLV which can carry ordered list of Reply Mode values. This document updates RFC4379. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-akiya-mpls-lsp-ping-reply-mode-simple/ There's also a htmlized version available at: http://tools.ietf.org/html/draft-akiya-mpls-lsp-ping-reply-mode-simple-03 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-akiya-mpls-lsp-ping-reply-mode-simple-03 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Sun Jul 27 12:48:03 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8F0701A01DC for ; Sun, 27 Jul 2014 12:48:00 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -114.502 X-Spam-Level: X-Spam-Status: No, score=-114.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id jWbHHC8FPNsa for ; Sun, 27 Jul 2014 12:47:58 -0700 (PDT) Received: from alln-iport-4.cisco.com (alln-iport-4.cisco.com [173.37.142.91]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 77A421A010C for ; Sun, 27 Jul 2014 12:47:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2875; q=dns/txt; s=iport; t=1406490478; x=1407700078; h=from:to:subject:date:message-id:references:in-reply-to: content-transfer-encoding:mime-version; bh=RjkFwZmpvjQi+T9B2rcdcC/zAnMz40hKhGSHTfXf0bM=; b=K1VGreCRcAZOsZwCS9AESkhdHK17DO8uxlHCKW0toD92jxtlppFO9ZTQ DEeJo8VyU0fxvVeys0KtTq3KtVu1HeXw/uBpoMTb2cwDiZJdncRgPNq0I AwzY5wNC7dCFa5Bb2hW3slByzuIK8fR2zxTp4cfv6qdj586Gli1+U7mrG s=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AhQFABVX1VOtJV2Q/2dsb2JhbABYgmokUlMEBMtTDIdDAYEMFneEAwEBAQQBAQE3NBcEAgEIEQQBAQsUCQcnCxQJCAIEEwgBiDkBBwW8HRePGzgGgymBGwWOV45HknqDSWwBgUQ X-IronPort-AV: E=Sophos;i="5.01,743,1400025600"; d="scan'208";a="64424781" Received: from rcdn-core-8.cisco.com ([173.37.93.144]) by alln-iport-4.cisco.com with ESMTP; 27 Jul 2014 19:47:57 +0000 Received: from xhc-rcd-x11.cisco.com (xhc-rcd-x11.cisco.com [173.37.183.85]) by rcdn-core-8.cisco.com (8.14.5/8.14.5) with ESMTP id s6RJlvID019758 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL) for ; Sun, 27 Jul 2014 19:47:57 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-rcd-x11.cisco.com ([173.37.183.85]) with mapi id 14.03.0123.003; Sun, 27 Jul 2014 14:47:57 -0500 From: "Nobo Akiya (nobo)" To: "mpls@ietf.org" Thread-Topic: [mpls] I-D Action: draft-akiya-mpls-lsp-ping-reply-mode-simple-03.txt Thread-Index: AQHPqdMYvOvPn4TW0ka5hfnOVi1J45u0Uxog Date: Sun, 27 Jul 2014 19:47:57 +0000 Message-ID: References: <20140727194257.11929.67494.idtracker@ietfa.amsl.com> In-Reply-To: <20140727194257.11929.67494.idtracker@ietfa.amsl.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [161.44.212.51] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/nnOWsxrCL8EWPR7JCRgseDaGVPo Subject: Re: [mpls] I-D Action: draft-akiya-mpls-lsp-ping-reply-mode-simple-03.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 27 Jul 2014 19:48:00 -0000 Hello MPLS WG, We have published a new version of draft-akiya-mpls-lsp-ping-reply-mode-sim= ple. Many thanks to Sam Aldrin, Jeffrey Zhang, Jeremy Whittaker and Mustapha Ali= ssaoui for providing valuable comments. Thanks! -Nobo URL: http://www.ietf.org/internet-drafts/draft-akiya-mpls-lsp-pi= ng-reply-mode-simple-03.txt Status: https://datatracker.ietf.org/doc/draft-akiya-mpls-lsp-ping-= reply-mode-simple/ Htmlized: http://tools.ietf.org/html/draft-akiya-mpls-lsp-ping-reply-= mode-simple-03 Diff: http://www.ietf.org/rfcdiff?url2=3Ddraft-akiya-mpls-lsp-pin= g-reply-mode-simple-03 > -----Original Message----- > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of internet- > drafts@ietf.org > Sent: Sunday, July 27, 2014 3:43 PM > To: i-d-announce@ietf.org > Cc: mpls@ietf.org > Subject: [mpls] I-D Action: draft-akiya-mpls-lsp-ping-reply-mode-simple- > 03.txt >=20 >=20 > A New Internet-Draft is available from the on-line Internet-Drafts > directories. > This draft is a work item of the Multiprotocol Label Switching Working > Group of the IETF. >=20 > Title : Label Switched Path (LSP) Ping/Traceroute Reply= Mode > Simplification > Authors : Nobo Akiya > George Swallow > Carlos Pignataro > Loa Andersson > Mach(Guoyi) Chen > Filename : draft-akiya-mpls-lsp-ping-reply-mode-simple-03.txt > Pages : 11 > Date : 2014-07-27 >=20 > Abstract: > The Multiprotocol Label Switching (MPLS) Label Switched Path (LSP) > Ping and Traceroute use the Reply Mode field to signal the method to > be used in the MPLS echo reply. This document adds one value to the > Reply Mode field to indicate reverse LSP. This document also adds an > optional TLV which can carry ordered list of Reply Mode values. >=20 > This document updates RFC4379. >=20 >=20 >=20 > The IETF datatracker status page for this draft is: > https://datatracker.ietf.org/doc/draft-akiya-mpls-lsp-ping-reply-mode- > simple/ >=20 > There's also a htmlized version available at: > http://tools.ietf.org/html/draft-akiya-mpls-lsp-ping-reply-mode-simple-03 >=20 > A diff from the previous version is available at: > http://www.ietf.org/rfcdiff?url2=3Ddraft-akiya-mpls-lsp-ping-reply-mode- > simple-03 >=20 >=20 > Please note that it may take a couple of minutes from the time of > submission until the htmlized version and diff are available at tools.iet= f.org. >=20 > Internet-Drafts are also available by anonymous FTP at: > ftp://ftp.ietf.org/internet-drafts/ >=20 > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls From nobody Mon Jul 28 03:16:43 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E84E71A03C3 for ; Mon, 28 Jul 2014 03:16:32 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Di4wNA7Ffcmj for ; Mon, 28 Jul 2014 03:16:17 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C06571A036C for ; Mon, 28 Jul 2014 03:16:16 -0700 (PDT) Received: from [192.168.1.130] (81-236-221-144-no93.tbcn.telia.com [81.236.221.144]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id DF0E51801586; Mon, 28 Jul 2014 12:15:47 +0200 (CEST) Message-ID: <53D622E0.6080002@pi.nu> Date: Mon, 28 Jul 2014 12:16:00 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls@ietf.org" Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/X_vjl8wsoSzOVjWfQDMTqmLVFb0 Cc: draft-ietf-mpls-mldp-in-band-wildcard-encoding@tools.ietf.org, "mpls-chairs@tools.ietf.org" Subject: [mpls] working group last call on draft-ietf-mpls-mldp-in-band-wildcard-encoding X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 28 Jul 2014 10:16:33 -0000 Working Group, This is to initiate a two week working group last call on draft-ietf-mpls-mldp-in-band-wildcard-encoding. Please send your comments to the mpls wg mailing list (mpls@ietf.org). There are no IPR disclosures against this document. All the authors and contributors have stated on the working group mailing list that they are not aware of any IPRs that relates to this draft. This working group last call ends August 8, 2014. /Loa for the MPLS wg chairs -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Mon Jul 28 03:58:19 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 41B0D1A03CB; Mon, 28 Jul 2014 03:58:16 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -0.002 X-Spam-Level: X-Spam-Status: No, score=-0.002 tagged_above=-999 required=5 tests=[BAYES_20=-0.001, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ak7RD_N1xQXm; Mon, 28 Jul 2014 03:58:10 -0700 (PDT) Received: from cappuccino.rob.sh (cappuccino.rob.sh [IPv6:2a03:9800:10:4c::cafe:b00c]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 9B74C1A015B; Mon, 28 Jul 2014 03:58:09 -0700 (PDT) Received: from [109.144.194.84] (helo=[10.210.201.184]) by cappuccino.rob.sh with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1XBid4-0006v3-TS; Mon, 28 Jul 2014 11:58:07 +0100 Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.2\)) From: Rob Shakir In-Reply-To: Date: Mon, 28 Jul 2014 11:58:03 +0100 Content-Transfer-Encoding: quoted-printable Message-Id: References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> <820F3138-D28A-47C6-AB0B-27AB3466D65C@rob.sh> To: Robert Raszuk X-Mailer: Apple Mail (2.1878.2) Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/nWUU3GEFIlJCF3gWRQ4eVxUFwK4 Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 28 Jul 2014 10:58:16 -0000 Hi Robert, On 26 Jul 2014, at 23:26, Robert Raszuk wrote: > Perhaps you can expand on how an LSR programs its LFIB such that it = has multiple labels matched with a single entry please? >=20 > =E2=80=8BWhen you install a label to LFIB you also pass its depth ie = number of significant bits to match on.=20 >=20 > Hardware will treat the remaining bits as "do not care". That is = pretty basic logical function for any match operation.=20 rjs> So, this is exactly akin to the description I gave of partitioning = the label space - since it requires one to sterilise some of the label = space (N-bits are now significant for forwarding, with the remaining = (20-M) being used for entropy). > At least I am quite sure it is much simpler then any other form of = search for ELI/EL within the SR deep stack :) rjs> The look-up logic has to change somewhat for the data-plane. = Particularly as: - We need to check whether the top-most label is within the block of = labels that we are using for this function. - If it is, we do a lookup based on the first N-bits to determine the = next-hop. - if it=E2=80=99s not, we need to do a lookup based on the = entire label. - If this was in the entropy block we determine the OIF by matching this = next-hop along with the hash of the remaining (20-N) bits. - else we fallback to the existing hashing procedures. Alternatively, we need to: - Look-up the next-hop based on the top-most label. - If the ELI is in the label stack, take the following label as the EL. - Determine the OIF based on the next-hop and the EL value received. - if the EL is not present, then hash based on existing = procedures. Is the former =E2=80=9Cmuch simpler=E2=80=9D? I am no hardware expert, = but I would say they seem roughly analogous in terms of decision process = that needs to be made - other than the latter needs visibility into more = of the packet (such that ELI/EL is included in the header that is = extracted).=20 It=E2=80=99s notable that the latter logic must be implemented anyway at = an LSR, because we have now standardised ELI/EL and it is implemented. > I=E2=80=99m struggling to comprehend how this fits into the existing = implementations, or can be realised without requiring some = forwarding/entropy split of the 20-bit label as I described before. >=20 > =E2=80=8BThe split I have in mind is passed explicitiely in control = plane. So there is no additional logic required for it. =E2=80=8B >=20 > =E2=80=8BNow you may rightfully state that this requires an upgrade. = Well true but any alternative discussed here requires an upgrade as = well. Moreover even support of SR requires an upgrade :) >=20 > Control plane vs data plane .. EL based solution requires both day = one. Label mask does not strictly require any data plane change during = the transition period as it could install all atomic labels till the = mask support in LFIB is available later. >=20 rjs> In smaller nodes (aggregation/access nodes) then this might have = significant impact, given LFIB limitations. If we need to have M*(number = of destination FECs) installed in the LFIB then this might bust some = limits. Whilst label mask is a potential solution, my view is that we should = continue to leverage the EL work already done by this WG. Kind regards, > Cheers, > R.=E2=80=8B >=20 From nobody Mon Jul 28 07:10:49 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3B5E21B2836 for ; Mon, 28 Jul 2014 07:10:42 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id QEKWGUdCkJ4g for ; Mon, 28 Jul 2014 07:10:40 -0700 (PDT) Received: from mail-qa0-x22e.google.com (mail-qa0-x22e.google.com [IPv6:2607:f8b0:400d:c00::22e]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id CAD1F1B2822 for ; Mon, 28 Jul 2014 07:10:39 -0700 (PDT) Received: by mail-qa0-f46.google.com with SMTP id v10so7882032qac.33 for ; Mon, 28 Jul 2014 07:10:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:from:date:message-id:subject:to:content-type; bh=grRM02s8xC7ge7HEOyNWp0YDDkXkCrS32lZy6GDaTtQ=; b=JU8FlCsdD9uH+OsbjmyODEJbv+c+/CNwo56POeFZJLdvQfV4LmnF7qyA5lHfDWCkwO dVw2PItxxZ5uSOi0D5aKvd38d5MJmhL2PFsXFeAssOca89jvqGQiTdjzTPdSUSbdZk3+ j89lSXTdAjxT6kJ+0g9WG90i8C+pbW9f1oWzTR/WHAUsiYip73JOvD8cySIzptumaL0V 79LEw3u+J9TrysO/w+QhbLdH/0ldWxGSp6J9mR8hP6I1vNmJQBHmkdl1umX9t9OgFHBh QOW2lCrfjrlpluStEmlXFY7sSL6ZYhYgt6BHb9Akc59lsOe0NLOeqIBkz89w4aYy+oN5 CanQ== X-Received: by 10.140.94.197 with SMTP id g63mr4549838qge.90.1406556636833; Mon, 28 Jul 2014 07:10:36 -0700 (PDT) MIME-Version: 1.0 Received: by 10.140.16.22 with HTTP; Mon, 28 Jul 2014 07:10:16 -0700 (PDT) From: "Andrew G. Malis" Date: Mon, 28 Jul 2014 10:10:16 -0400 Message-ID: To: "mpls@ietf.org" Content-Type: multipart/alternative; boundary=001a113a22bab2063c04ff417c43 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/7yMHSp88XiG21xpPPwwyFcK6sMk Subject: [mpls] PWE3 WG Last Call for draft-ietf-pwe3-endpoint-fast-protection-01 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 28 Jul 2014 14:10:42 -0000 --001a113a22bab2063c04ff417c43 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable MPLS WG, The PWE3 WG is currently conducting a WG last call on draft-ietf-pwe3-endpoint-fast-protection-01, and solicits your comments. See below for the last call announcement and the URL for the draft. Note that this draft allocates code points that are referenced by draft-ietf-mpls-ldp-applicability-label-adv, which is currently on the RFC Editor's queue. Please review the draft and send comments to the pwe3@ietf.org email list. Thanks, Andy ---------- Forwarded message ---------- From: Bocci, Matthew (Matthew) Date: Fri, Jul 25, 2014 at 10:56 AM Subject: [PWE3] WG Last Call for draft-ietf-pwe3-endpoint-fast-protection-0= 1 To: "pwe3@ietf.org" This email begins a second two week working group last call for http://tools.ietf.org/html/draft-ietf-pwe3-endpoint-fast-protection-01 . Please review the draft and post any comments to the PWE3 list. If you have read the draft, even if you don=C2=B9t have any comments, but w= ould like to see the draft progressed, please can you indicate this to the list. This working group last call will end on Friday August 8th, 2014. Best regards Matthew and Andy _______________________________________________ pwe3 mailing list pwe3@ietf.org https://www.ietf.org/mailman/listinfo/pwe3 --001a113a22bab2063c04ff417c43 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
MPLS WG,

The PWE3 WG is currently condu= cting a WG last call on=C2=A0draft-ietf-pwe3-endpoint-fast-protection-01, a= nd solicits your comments. See below for the last call announcement and the= URL for the draft.

Note that this draft allocates code points that are ref= erenced by=C2=A0draft-ietf-mpls-ldp-applicability-label-adv, which is curre= ntly on the RFC Editor's queue.

Please review = the draft and send comments to the pwe3@ie= tf.org email list.

Thanks,
Andy

---------- Forwarded message ----------
From: Bocci, Matthew (Matthew) <matthew.bocci@alcatel-lucent.com>
Date: Fri, Jul 25, 2014 at 10:56 AM
Subject: [PWE3] WG Last Call for dra= ft-ietf-pwe3-endpoint-fast-protection-01
To: "pwe3@ietf.org" <pw= e3@ietf.org>

This email begins a second two week working group last call for
http://tools.ietf.org/html/draft-ietf-pwe3-endpoi= nt-fast-protection-01 .

Please review the draft and post any comments to the PWE3 list.

If you have read the draft, even if you don=C2=B9t have any comments, but w= ould
like to see the draft progressed, =C2=A0please can you indicate this to the=
list.

This working group last call will end on Friday August 8th, 2014.


Best regards


Matthew and Andy

_______________________________________________
pwe3 mailing list
pwe3@ietf.org
ht= tps://www.ietf.org/mailman/listinfo/pwe3

--001a113a22bab2063c04ff417c43-- From nobody Mon Jul 28 07:58:18 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id DB7DA1B2870 for ; Mon, 28 Jul 2014 07:58:17 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id e_HWb5OnQ-ie for ; Mon, 28 Jul 2014 07:58:16 -0700 (PDT) Received: from rcdn-iport-5.cisco.com (rcdn-iport-5.cisco.com [173.37.86.76]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 972571B286A for ; 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Mon, 28 Jul 2014 14:58:14 GMT Received: from xmb-aln-x07.cisco.com ([169.254.2.47]) by xhc-aln-x13.cisco.com ([173.36.12.87]) with mapi id 14.03.0123.003; Mon, 28 Jul 2014 09:58:14 -0500 From: "Rakesh Gandhi (rgandhi)" To: "Tarek Saad (tsaad)" , "mpls@ietf.org" Thread-Topic: New Version Notification for draft-tsaad-mpls-p2mp-loose-path-reopt-03.txt Thread-Index: AQHPpPT0BjCdTVv/qUur0dHvR6KYeJuzITsAgAKOUgA= Date: Mon, 28 Jul 2014 14:58:14 +0000 Message-ID: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.3.5.130515 x-originating-ip: [161.44.213.29] Content-Type: text/plain; charset="euc-kr" Content-ID: <286938AB061FDC4092108661BCD2D88A@emea.cisco.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/xGlei4Y-7_yPINCdenQ1u1UBsqo Cc: "draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org" , "robert.h.venator.civ@mail.mil" , "mpls-chairs@tools.ietf.org" , "Zafar Ali \(zali\)" Subject: Re: [mpls] New Version Notification for draft-tsaad-mpls-p2mp-loose-path-reopt-03.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 28 Jul 2014 14:58:18 -0000 SGkgV0csDQoNCldlIGhhdmUgYWRkcmVzc2VkIGNvbW1lbnRzIGZyb20gTVBMUy1SVCByZXZpZXcg aW4gdGhpcyB2ZXJzaW9uLg0KDQpXZSBoYXZlIGltcGxlbWVudGVkIG1ldGhvZCBmcm9tIHRoaXMg ZHJhZnQgaW4gYSByZWxlYXNlZCBzb2Z0d2FyZSBhbmQgaXQNCndvdWxkIGJlIGdvb2QgdG8gZ2V0 IHRoZSBvZmZpY2lhbCBjb2RlLXBvaW50cy4NCg0KQXBwcmVjaWF0ZSB5b3VyIGNvbW1lbnRzL2Zl ZWRiYWNrcy4NCg0KVGhhbmtzLA0KUmFrZXNoDQoNCg0KT24gMjAxNC0wNy0yNiAzOjU2IFBNLCAi VGFyZWsgU2FhZCAodHNhYWQpIiA8dHNhYWRAY2lzY28uY29tPiB3cm90ZToNCg0KPldvcmtpbmcg R3JvdXAsDQo+DQo+V2Wp9nZlIHVwbG9hZGVkIHZlcnNpb24gLTAzIG9mIHRoZSBkcmFmdCAoYWNj ZXNzaWJsZSBiZWxvdykuIFRoZSBhdXRob3JzDQo+YXJlIHNvbGljaXRpbmcgYW55IGNvbW1lbnRz IHRoYXQgY2FuIGJlIHNlbnQgdGhlIG1haWxlciBsaXN0Lg0KPg0KPlJlZ2FyZHMsDQo+VGFyZWsN Cj4NCj5PbiAyMDE0LTA3LTIxLCAxMTowMiBBTSwgImludGVybmV0LWRyYWZ0c0BpZXRmLm9yZyIN Cj48aW50ZXJuZXQtZHJhZnRzQGlldGYub3JnPiB3cm90ZToNCj4NCj4+DQo+PkEgbmV3IHZlcnNp b24gb2YgSS1ELCBkcmFmdC10c2FhZC1tcGxzLXAybXAtbG9vc2UtcGF0aC1yZW9wdC0wMy50eHQN Cj4+aGFzIGJlZW4gc3VjY2Vzc2Z1bGx5IHN1Ym1pdHRlZCBieSBUYXJlayBTYWFkIGFuZCBwb3N0 ZWQgdG8gdGhlDQo+PklFVEYgcmVwb3NpdG9yeS4NCj4+DQo+Pk5hbWU6CQlkcmFmdC10c2FhZC1t cGxzLXAybXAtbG9vc2UtcGF0aC1yZW9wdA0KPj5SZXZpc2lvbjoJMDMNCj4+VGl0bGU6CQlSZW9w dGltaXphdGlvbiBvZiBQb2ludC10by1NdWx0aXBvaW50IFRyYWZmaWMgRW5naW5lZXJpbmcgTG9v c2VseQ0KPj5Sb3V0ZWQgTFNQcw0KPj5Eb2N1bWVudCBkYXRlOgkyMDE0LTA3LTIxDQo+Pkdyb3Vw OgkJbXBscw0KPj5QYWdlczoJCTExDQo+PlVSTDogICAgICAgICAgICANCj4+aHR0cDovL3d3dy5p ZXRmLm9yZy9pbnRlcm5ldC1kcmFmdHMvZHJhZnQtdHNhYWQtbXBscy1wMm1wLWxvb3NlLXBhdGgt cmVvcA0KPj50DQo+Pi0wMy50eHQNCj4+U3RhdHVzOiAgICAgICAgIA0KPj5odHRwczovL2RhdGF0 cmFja2VyLmlldGYub3JnL2RvYy9kcmFmdC10c2FhZC1tcGxzLXAybXAtbG9vc2UtcGF0aC1yZW9w dC8NCj4+SHRtbGl6ZWQ6ICAgICAgIA0KPj5odHRwOi8vdG9vbHMuaWV0Zi5vcmcvaHRtbC9kcmFm dC10c2FhZC1tcGxzLXAybXAtbG9vc2UtcGF0aC1yZW9wdC0wMw0KPj5EaWZmOiAgICAgICAgICAg DQo+Pmh0dHA6Ly93d3cuaWV0Zi5vcmcvcmZjZGlmZj91cmwyPWRyYWZ0LXRzYWFkLW1wbHMtcDJt cC1sb29zZS1wYXRoLXJlb3B0LTANCj4+Mw0KPj4NCj4+QWJzdHJhY3Q6DQo+PiAgIEZvciBhIFRy YWZmaWMgRW5naW5lZXJlZCAoVEUpIHBvaW50LXRvLW11bHRpcG9pbnQgKFAyTVApIExhYmVsDQo+ PiAgIFN3aXRjaGVkIFBhdGggKExTUCksIGl0IGlzIHByZWZlcmFibGUgaW4gc29tZSBjYXNlcyB0 byByZS1ldmFsdWF0ZQ0KPj4gICBhbmQgcmUtb3B0aW1pemUgdGhlIGVudGlyZSBQMk1QLVRFIExT UCBieSByZS1zaWduYWxpbmcgYWxsIGl0cyBTMkwNCj4+ICAgc3ViLUxTUChzKS4gRXhpc3Rpbmcg bWVjaGFuaXNtcyBhbGxvdyB0aGUgcGF0aCByZS1ldmFsdWF0aW9uIGFuZCB0aGUNCj4+ICAgc2ln bmFsaW5nIG9mIGEgdGhlIG5vdGlmaWNhdGlvbiBvZiBwcmVmZXJyZWQgcGF0aCBleGlzdHMgZm9y IGEgc2luZ2xlDQo+PiAgIFMyTCBzdWItTFNQIG9ubHkuDQo+Pg0KPj4gICBUaGlzIGRvY3VtZW50 IGRlZmluZXMgUlNWUC1URSBzaWduYWxpbmcgZXh0ZW5zaW9ucyB0byBhbGxvdyBhbg0KPj4gICBp bmdyZXNzIExhYmVsIFN3aXRjaGluZyBSb3V0ZXIgKExTUikgb2YgYSBQMk1QLVRFIExTUCB0byB0 cmlnZ2VyIHRoZQ0KPj4gICByZS1ldmFsdWF0aW9uIG9mIHRoZSBlbnRpcmUgTFNQIHRyZWUgY29u dGFpbmluZyBvbmUgb3IgbW9yZSBTMkwgc3ViLQ0KPj4gICBMU1BzIHdob3NlIHBhdGhzIGFyZSBs b29zZSAob3IgYWJzdHJhY3QpIGhvcCBleHBhbmRlZCwgYW5kIGZvciBhIG1pZC0NCj4+ICAgcG9p bnQgTFNSIHRvIHNpZ25hbCB0byB0aGUgaW5ncmVzcyBMU1IgdGhhdCBhIGJldHRlciB0cmVlIGV4 aXN0cyBmb3INCj4+ICAgdGhlIGVudGlyZSBQMk1QLVRFIExTUC4NCj4+DQo+PiAgICAgICAgICAg ICAgICAgDQo+PiAgICAgICAgDQo+Pg0KPj4NCj4+UGxlYXNlIG5vdGUgdGhhdCBpdCBtYXkgdGFr ZSBhIGNvdXBsZSBvZiBtaW51dGVzIGZyb20gdGhlIHRpbWUgb2YNCj4+c3VibWlzc2lvbg0KPj51 bnRpbCB0aGUgaHRtbGl6ZWQgdmVyc2lvbiBhbmQgZGlmZiBhcmUgYXZhaWxhYmxlIGF0IHRvb2xz LmlldGYub3JnLg0KPj4NCj4+VGhlIElFVEYgU2VjcmV0YXJpYXQNCj4+DQo+DQoNCg== From nobody Mon Jul 28 08:22:22 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 40A7C1A0303 for ; 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charset="us-ascii" Content-ID: <796CC1367A79DB459828B457AA2DE5D9@emea.cisco.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/h_LLNaGlijTzT1cQsjbzMN33fwQ Cc: "draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org" , "robert.h.venator.civ@mail.mil" , "mpls-chairs@tools.ietf.org" , "Zafar Ali \(zali\)" Subject: Re: [mpls] IPR poll on draft-tsaad-mpls-p2mp-loose-path-reopt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 28 Jul 2014 15:22:18 -0000 Hi Loa,=20 I am aware of one IPR and has been disclosed as follows. https://datatracker.ietf.org/ipr/2307/ Thanks, Rakesh On 2014-07-26 4:48 PM, "Loa Andersson" wrote: >Working Group, > >The authors of draft-tsaad-mpls-p2mp-loose-path-reopt have told >us that the draft is ready to be accepted as a working group document. > >Before we do poll to see if we have consensus to accept the document >as a working group document we want to do an IPR poll on the document. > >This mail starts that IPR poll. > >Are you aware of any IPR that applies to draft-tsaad-mpls-p2mp-loose- >path-reopt? > >If so, has this IPR been disclosed in compliance with IETF IPR rules >(see RFCs 3979, 4879, 3669 and 5378 for more details). > >Currently there are one IPR disclosures that relates to this document. > >If you are listed as a document author or contributor please respond to >this email regardless of whether or not you are aware of any relevant >IPR. *The response needs to be sent to the MPLS wg mailing list.* The >document will not advance to the next stage until a response has been >received from each author and contributor. > >If you are on the MPLS WG email list but are not listed as an author or >contributor, then please explicitly respond only if you are aware of any >IPR that has not yet been disclosed in conformance with IETF rules. > >Thanks, Loa >(as MPLS WG co-chair) >--=20 > > >Loa Andersson email: loa@mail01.huawei.com >Senior MPLS Expert loa@pi.nu >Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Mon Jul 28 10:01:44 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 79F7B1A03BB for ; 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bh=iYBwNLOmGt58IU7D22qsncRsW5M2PtMhoC+d59Ezn2c=; b=V/BuUMN/VcxHZDxKRuvowYhV9LD0sE0D+kPkKZ5ZDioJb9E+OU2z4gX+ ZBTBl9tQ3MH3+SDkbPZqWxw0T3oy4ksUrcvldim//v+fgU7Efaw8o7sah YUVfJ8RIzjdELrD5TyITbxF3oXSHXP1+WAZHcw+SUcwdVf11C6wykHSVx 0=; X-IronPort-AV: E=Sophos;i="5.01,750,1400025600"; d="scan'208,217";a="120882777" Received: from aer-iport-nat.cisco.com (HELO aer-core-2.cisco.com) ([173.38.203.22]) by aer-iport-3.cisco.com with ESMTP; 28 Jul 2014 17:01:28 +0000 Received: from cisco.com (mrwint.cisco.com [64.103.70.36]) by aer-core-2.cisco.com (8.14.5/8.14.5) with ESMTP id s6SH1Sgm010814 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 28 Jul 2014 17:01:28 GMT Received: from [IPv6:::1] (localhost [127.0.0.1]) by cisco.com (8.14.4+Sun/8.8.8) with ESMTP id s6SH1R6B021233; Mon, 28 Jul 2014 18:01:27 +0100 (BST) Message-ID: <53D681E7.7070209@cisco.com> Date: Mon, 28 Jul 2014 18:01:27 +0100 From: Stewart Bryant User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls-chairs@tools.ietf.org" , "mpls@ietf.org" References: In-Reply-To: X-Forwarded-Message-Id: Content-Type: multipart/alternative; boundary="------------090305060802020406090404" Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/JEq9V5URqAXUcW2kg78-cu5u7PU Cc: "Joseph Chin \(schin\)" , "draft-bryant-mpls-oam-udp-return@tools.ietf.org" Subject: [mpls] Fwd: Re: IPR poll on draft-bryant-mpls-oam-udp-return X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: stbryant@cisco.com List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 28 Jul 2014 17:01:37 -0000 This is a multi-part message in MIME format. --------------090305060802020406090404 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit Chairs, MPLS WG, Joseph, informs me that he knows of no IPR related to this draft. I think that you now have declarations from all Authors and Contributors. Stewart -------- Original Message -------- Subject: Re: IPR poll on draft-bryant-mpls-oam-udp-return Date: Mon, 28 Jul 2014 09:37:42 -0700 From: Joseph Chin (schin) To: Stewart Bryant (stbryant) Hi Stewart, I’m not aware of any IPR relevant to this draft no submit any CPOC related to this. Please let know if you need anymore info. Regards, Joseph From: "Stewart Bryant (stbryant)" > Reply-To: "Stewart Bryant (stbryant)" > Date: Monday, July 28, 2014 at 9:32 AM To: Joseph Chin > Subject: Fwd: IPR poll on draft-bryant-mpls-oam-udp-return -------- Original Message -------- Subject: IPR poll on draft-bryant-mpls-oam-udp-return Resent-Date: Mon, 7 Jul 2014 14:12:54 +0000 Resent-From: Resent-To: , , , , , , Date: Mon, 7 Jul 2014 16:12:50 +0200 From: Loa Andersson To: mpls@ietf.org CC: draft-bryant-mpls-oam-udp-return@tools.ietf.org, mpls-chairs@tools.ietf.org , VIGOUREUX, MARTIN (MARTIN) Working Group, This is to start an IPR poll on draft-bryant-mpls-oam-udp-return. Are you aware of any IPR that applies to draft-bryant-mpls-oam-udp-return? If so, has this IPR been disclosed in compliance with IETF IPR rules (see RFCs 3979, 4879, 3669 and 5378 for more details). Currently there are no IPR disclosures that relates to this document. If you are listed as a document author or contributor please respond to this email regardless of whether or not you are aware of any relevant IPR. *The response needs to be sent to the MPLS wg mailing list.* The document will not advance to the next stage until a response has been received from each author and contributor. If you are on the MPLS WG email list but are not listed as an author or contributor, then please explicitly respond only if you are aware of any IPR that has not yet been disclosed in conformance with IETF rules. Thanks, Loa (as MPLS WG co-chair) -- Loa Andersson email:loa@mail01.huawei.com Senior MPLS Expertloa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 . --------------090305060802020406090404 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: 8bit Chairs, MPLS WG,

Joseph, informs me that he knows of no IPR related to this
draft.

I think that you now have declarations from all Authors and
Contributors.

Stewart

-------- Original Message --------
Subject: Re: IPR poll on draft-bryant-mpls-oam-udp-return
Date: Mon, 28 Jul 2014 09:37:42 -0700
From: Joseph Chin (schin) <schin@cisco.com>
To: Stewart Bryant (stbryant) <stbryant@cisco.com>


Hi Stewart,

I’m not aware of any IPR relevant to this draft no submit any CPOC related to this.
Please let know if you need anymore info.

Regards,
Joseph


From: "Stewart Bryant (stbryant)" <stbryant@cisco.com>
Reply-To: "Stewart Bryant (stbryant)" <stbryant@cisco.com>
Date: Monday, July 28, 2014 at 9:32 AM
To: Joseph Chin <schin@cisco.com>
Subject: Fwd: IPR poll on draft-bryant-mpls-oam-udp-return




-------- Original Message --------
Subject: IPR poll on draft-bryant-mpls-oam-udp-return
Resent-Date: Mon, 7 Jul 2014 14:12:54 +0000
Resent-From: <draft-alias-bounces@tools.ietf.org>
Resent-To: <msiva@cisco.com>, <sagsoni@cisco.com>, <stbryant@cisco.com>, <swallow@cisco.com>, <loa@pi.nu>, <rcallon@juniper.net>, <martin.vigoureux@alcatel-lucent.com>
Date: Mon, 7 Jul 2014 16:12:50 +0200
From: Loa Andersson <loa@pi.nu>
To: mpls@ietf.org<mpls@ietf.org>
CC: draft-bryant-mpls-oam-udp-return@tools.ietf.org <draft-bryant-mpls-oam-udp-return@tools.ietf.org>, mpls-chairs@tools.ietf.org <mpls-chairs@tools.ietf.org>, VIGOUREUX, MARTIN (MARTIN) <martin.vigoureux@alcatel-lucent.com> 


Working Group,

This is to start an IPR poll on draft-bryant-mpls-oam-udp-return.

Are you aware of any IPR that applies to draft-bryant-mpls-oam-udp-return?

If so, has this IPR been disclosed in compliance with IETF IPR rules
(see RFCs 3979, 4879, 3669 and 5378 for more details).

Currently there are no IPR disclosures that relates to this document.

If you are listed as a document author or contributor please respond to
this email regardless of whether or not you are aware of any relevant
IPR. *The response needs to be sent to the MPLS wg mailing list.* The 
document will not advance to the next stage until a response has been
received from each author and contributor.

If you are on the MPLS WG email list but are not listed as an author or
contributor, then please explicitly respond only if you are aware of any
IPR that has not yet been disclosed in conformance with IETF rules.

Thanks, Loa
(as MPLS WG co-chair)
-- 


Loa Andersson                        email: loa@mail01.huawei.com
Senior MPLS Expert                          loa@pi.nu
Huawei Technologies (consultant)     phone: +46 739 81 21 64
.




--------------090305060802020406090404-- From nobody Mon Jul 28 12:34:46 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 97EB81B290C for ; Mon, 28 Jul 2014 12:34:44 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id xvOPZl9J6Zy6 for ; Mon, 28 Jul 2014 12:34:41 -0700 (PDT) Received: from uhil19pa09.eemsg.mail.mil (uhil19pa09.eemsg.mail.mil [214.24.21.82]) by ietfa.amsl.com (Postfix) with ESMTP id 325CE1A0AAD for ; Mon, 28 Jul 2014 12:34:39 -0700 (PDT) X-EEMSG-Attachment-filename: smime.p7s Received: from edge-mech01.mail.mil ([214.21.130.102]) by uhil19pa09.eemsg.mail.mil with ESMTP; 28 Jul 2014 19:34:38 +0000 Received: from UMECHPAOL.easf.csd.disa.mil (214.21.130.39) by edge-mech01.mail.mil (214.21.130.102) with Microsoft SMTP Server (TLS) id 14.3.174.1; Mon, 28 Jul 2014 19:34:37 +0000 Received: from UMECHPANZ.easf.csd.disa.mil ([169.254.2.94]) by umechpaol.easf.csd.disa.mil ([214.21.130.39]) with mapi id 14.03.0174.001; Mon, 28 Jul 2014 19:34:37 +0000 From: "Venator, Robert H III CIV DISA NS (US)" To: Loa Andersson , "mpls@ietf.org" Thread-Topic: IPR poll on draft-tsaad-mpls-p2mp-loose-path-reopt Thread-Index: AQHPqRLkkNK1G+h+FkGy2I1HaPLL+Ju14k8Q Date: Mon, 28 Jul 2014 19:34:37 +0000 Message-ID: References: <53D41400.9030805@pi.nu> In-Reply-To: <53D41400.9030805@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: yes X-MS-TNEF-Correlator: x-originating-ip: [214.21.44.13] Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=SHA1; boundary="----=_NextPart_000_0588_01CFAA79.6E2E8160" MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/Ye_YropD7xShQBQjwQyXXpuusA8 Cc: "draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org" , "mpls-chairs@tools.ietf.org" Subject: Re: [mpls] IPR poll on draft-tsaad-mpls-p2mp-loose-path-reopt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 28 Jul 2014 19:34:44 -0000 ------=_NextPart_000_0588_01CFAA79.6E2E8160 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Loa, I am not aware of any IPR that applies to this latest draft. Robert Venator -----Original Message----- From: Loa Andersson [mailto:loa@pi.nu] Sent: Saturday, July 26, 2014 4:48 PM To: mpls@ietf.org Cc: mpls-chairs@tools.ietf.org; draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org Subject: IPR poll on draft-tsaad-mpls-p2mp-loose-path-reopt Working Group, The authors of draft-tsaad-mpls-p2mp-loose-path-reopt have told us that the draft is ready to be accepted as a working group document. Before we do poll to see if we have consensus to accept the document as a working group document we want to do an IPR poll on the document. This mail starts that IPR poll. Are you aware of any IPR that applies to draft-tsaad-mpls-p2mp-loose- path-reopt? If so, has this IPR been disclosed in compliance with IETF IPR rules (see RFCs 3979, 4879, 3669 and 5378 for more details). Currently there are one IPR disclosures that relates to this document. If you are listed as a document author or contributor please respond to this email regardless of whether or not you are aware of any relevant IPR. *The response needs to be sent to the MPLS wg mailing list.* The document will not advance to the next stage until a response has been received from each author and contributor. If you are on the MPLS WG email list but are not listed as an author or contributor, then please explicitly respond only if you are aware of any IPR that has not yet been disclosed in conformance with IETF rules. Thanks, Loa (as MPLS WG co-chair) -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 ------=_NextPart_000_0588_01CFAA79.6E2E8160 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIISjTCCA3Aw ggJYoAMCAQICAQUwDQYJKoZIhvcNAQEFBQAwWzELMAkGA1UEBhMCVVMxGDAWBgNVBAoTD1UuUy4g R292ZXJubWVudDEMMAoGA1UECxMDRG9EMQwwCgYDVQQLEwNQS0kxFjAUBgNVBAMTDURvRCBSb290 IENBIDIwHhcNMDQxMjEzMTUwMDEwWhcNMjkxMjA1MTUwMDEwWjBbMQswCQYDVQQGEwJVUzEYMBYG A1UEChMPVS5TLiBHb3Zlcm5tZW50MQwwCgYDVQQLEwNEb0QxDDAKBgNVBAsTA1BLSTEWMBQGA1UE AxMNRG9EIFJvb3QgQ0EgMjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMAswfaNO6z/ PzzWcb64dCIH7HBBFfyrQOMHqsHD2J/+2kw6vz/I2Ch7SzYBwKxFJcPSDgqPhRhkED0aE3Aqb47X 3I2Ts0EPOCHNravCPSoF01cRNw3NjFH5k+PMRkkhjhS0zcsUPjjNcjHuqxLyZeo0LlZd/+5jdctt 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AA== ------=_NextPart_000_0588_01CFAA79.6E2E8160-- From nobody Mon Jul 28 14:03:31 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 611BF1A02AC; Mon, 28 Jul 2014 14:03:28 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.277 X-Spam-Level: X-Spam-Status: No, score=-1.277 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FM_FORGED_GMAIL=0.622, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hNssa6EP6hFT; Mon, 28 Jul 2014 14:03:27 -0700 (PDT) Received: from mail-ie0-x22d.google.com (mail-ie0-x22d.google.com [IPv6:2607:f8b0:4001:c03::22d]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3AD4B1A0217; Mon, 28 Jul 2014 14:03:27 -0700 (PDT) Received: by mail-ie0-f173.google.com with SMTP id tr6so7305910ieb.4 for ; Mon, 28 Jul 2014 14:03:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=6H2ykF0noj150dS0IWEDh9mMvGUr0lB7famoGeDpwiE=; b=Uv4wM4artBMatYCyBSGbj673Q8IhpGTLqpDITAB20rqfxnbh9b6YQAi0DIOZt9QpWb eeLBMm7+roP1DpxPUhQhZNnMrrqOekU2FHnHU9CCyFDdmfF1Bk8Dv3ntUESRhlnCRiMq ewFdQ+fWAD2yNfRleK4QXeFbApGcfkooIQNinxfGy0st7u4XgIpQEfexgSVrw/kP3GeU d+sasSrL+S9bBjquGcS1rQUCkBSu6F9MElzWP6+/G6ijVbu98+IGoemkQjlCkQs89E2l GJQzsT58j6Ygf8U1gRgKRdWygz4ATeI2tFv0vqqoZq4OOEZw13hXAdgyCeQZvGUq09BJ kbMw== MIME-Version: 1.0 X-Received: by 10.50.61.195 with SMTP id s3mr13678926igr.29.1406581406594; Mon, 28 Jul 2014 14:03:26 -0700 (PDT) Sender: rraszuk@gmail.com Received: by 10.64.128.99 with HTTP; Mon, 28 Jul 2014 14:03:26 -0700 (PDT) In-Reply-To: References: <5E87F378-9EE4-44BF-8001-E87A1B7BB169@rob.sh> <3378D800-2E02-45D0-BA47-4BEACAECC6F8@rob.sh> <820F3138-D28A-47C6-AB0B-27AB3466D65C@rob.sh> Date: Mon, 28 Jul 2014 23:03:26 +0200 X-Google-Sender-Auth: Tw8TPIDs8pL8kkm3GcWokrH1m78 Message-ID: From: Robert Raszuk To: Rob Shakir Content-Type: multipart/alternative; boundary=047d7bdc05f2167cfa04ff474165 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/q1OjYqn-xAwdhSZ--5-iwo4r4S4 Cc: "mpls@ietf.org" , "spring@ietf.org" , "draft-kini-mpls-spring-entropy-label@tools.ietf.org" Subject: Re: [mpls] [spring] SPRING MPLS and Entropy Label X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 28 Jul 2014 21:03:28 -0000 --047d7bdc05f2167cfa04ff474165 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable > - We need to check whether the top-most label is within the block of > labels that we are using for this function. > - If it is, we do a lookup based on the first N-bits to determine the > next-hop. > - if it=E2=80=99s not, we need to do a lookup based on the entire= label. > =E2=80=8BNope. Sorry. We always do identical single lookup. It is that some entries in the LFIB have mask (read: do not care bits). There are no two lookups nor two tables etc ... That's it. =E2=80=8BTrivial= for anyone who has some min hardware design background :). Whilst label mask is a potential solution, my view is that we should > continue to leverage the EL work already done by this WG. > =E2=80=8BGreat. Go for it ! /* After all if we would have spend little cycles now and innovate tiny bit to improve MPLS data plane it would result in better operation and lasting longer .... ;-) */ Best, r.=E2=80=8B --047d7bdc05f2167cfa04ff474165 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
=C2=A0
- We need to check whether the = top-most label is within the block of labels that we are using for this fun= ction.
- If it is, we do a lookup based on the first N-bits to determine the next-= hop.
=C2=A0 =C2=A0 =C2=A0 =C2=A0 - if it=E2=80=99s not, we need to do a lookup b= ased on the entire label.

=E2=80=8BNope. Sorry.=C2=A0

We always do iden= tical single lookup.=C2=A0

It is that some e= ntries in the LFIB have mask (read: do not care bits). There are no two loo= kups nor two tables etc ... That's it. =E2=80=8BTrivial for anyone who = has some min hardware design background :).=C2=A0


= Whilst label mask is a potential solution, my view is that we should contin= ue to leverage the EL work already done by this WG.

=E2=80=8BGreat. Go= for it !=C2=A0

/* After all if we would have spend littl= e cycles now and innovate tiny bit to improve MPLS data plane it would resu= lt in better operation and lasting longer .... ;-) */

Best,
r.=E2=80=8B

--047d7bdc05f2167cfa04ff474165-- From nobody Mon Jul 28 17:31:02 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3F32B1A03DB for ; Mon, 28 Jul 2014 17:31:01 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.693 X-Spam-Level: X-Spam-Status: No, score=-1.693 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HELO_EQ_JP=1.244, HOST_EQ_JP=1.265, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id z4aRs0deT14a for ; Mon, 28 Jul 2014 17:31:00 -0700 (PDT) Received: from tyo201.gate.nec.co.jp (TYO201.gate.nec.co.jp [210.143.35.51]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C788C1A03CA for ; Mon, 28 Jul 2014 17:30:59 -0700 (PDT) Received: from mailgate3.nec.co.jp ([10.7.69.160]) by tyo201.gate.nec.co.jp (8.13.8/8.13.4) with ESMTP id s6T0UvQi015138; Tue, 29 Jul 2014 09:30:57 +0900 (JST) Received: from mailsv4.nec.co.jp (imss61.nec.co.jp [10.7.69.156]) by mailgate3.nec.co.jp (8.11.7/3.7W-MAILGATE-NEC) with ESMTP id s6T0Uut11658; Tue, 29 Jul 2014 09:30:56 +0900 (JST) Received: from mail02.kamome.nec.co.jp (mail02.kamome.nec.co.jp [10.25.43.5]) by mailsv4.nec.co.jp (8.13.8/8.13.4) with ESMTP id s6T0UuQX024302; Tue, 29 Jul 2014 09:30:56 +0900 (JST) Received: from bpxc99gp.gisp.nec.co.jp ([10.38.151.145] [10.38.151.145]) by mail01b.kamome.nec.co.jp with ESMTP id BT-MMP-858461; Tue, 29 Jul 2014 09:29:55 +0900 Received: from BPXM18GP.gisp.nec.co.jp ([169.254.2.157]) by BPXC17GP.gisp.nec.co.jp ([10.38.151.145]) with mapi id 14.02.0328.011; Tue, 29 Jul 2014 09:29:54 +0900 From: Zhenlong Cui To: Loa Andersson , "draft-cui-mpls-tp-mfp-use-case-and-requirements@tools.ietf.org" , "mpls@ietf.org" Thread-Topic: [mpls] question on draft-cui-mpls-tp-mfp-use-case-and-requirements Thread-Index: Ac+qbHJ5tXHiNxEaR9u2GgVZYwRxqA== Date: Tue, 29 Jul 2014 00:29:54 +0000 Message-ID: Accept-Language: ja-JP, en-US Content-Language: ja-JP X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.38.126.83] Content-Type: text/plain; charset="iso-2022-jp" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/Vc6OsqDcu6sTWud98B1kZ5sXlfc Subject: Re: [mpls] question on draft-cui-mpls-tp-mfp-use-case-and-requirements X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Jul 2014 00:31:01 -0000 Hi Loa, Thank you for your question and repeating on the list. "n>=3Dm" - it's a typical use case of m:n protection, but isn't a limitatio= n. I apologize for the confusion. I agree with you that could n be lower, equal or higher than m in the m:n a= rchitecture. We will incorporate your comments to the next version of this draft. BR, Zhenlong > -----Original Message----- > From: Loa Andersson [mailto:loa@pi.nu] > Sent: Saturday, July 26, 2014 9:29 PM > To: draft-cui-mpls-tp-mfp-use-case-and-requirements@tools.ietf.org; mpls@= ietf.org; Cui Zhenlong(=1B$BVC=1B(B =1B$BDAN6=1B(B) > Subject: question on draft-cui-mpls-tp-mfp-use-case-and-requirements >=20 > Zhenlong, >=20 > draft-cui-mpls-tp-mfp-use-case-and-requirements in the mpls wg yesterday.= I had a question that was not very clear, I > try to repeat it here. >=20 > In slide 3 you say hat that: >=20 >=20 > "In the m:n architecture, the m backup paths(p1,p2) > are sharing backup resource for n working paths, as > shown in the following example(modeling)." >=20 > In slide 5 you say: >=20 > " The m backup paths should be sharing backup > resource for n working paths, where n>=3Dm." >=20 > It is not entirely clear if you say that n being a lower number is an cos= t optimization or if it is part of the architecture. >=20 > From a strictly architectural could n be lower, equal or higher than m, = i.e. you can protect m working paths with m+x > protecting paths. Where x can be any positive or negative number (as long= as it give you at least some resources for protection). >=20 > /Loa >=20 >=20 >=20 > -- >=20 >=20 > Loa Andersson email: loa@mail01.huawei.com > Senior MPLS Expert loa@pi.nu > Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Mon Jul 28 18:24:07 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 31E661A03BF for ; Mon, 28 Jul 2014 18:24:05 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2wL8l9M_BKaC for ; Mon, 28 Jul 2014 18:24:03 -0700 (PDT) Received: from rcdn-iport-8.cisco.com (rcdn-iport-8.cisco.com [173.37.86.79]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 8F9861A031F for ; Mon, 28 Jul 2014 18:24:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1851; q=dns/txt; s=iport; t=1406597043; x=1407806643; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=AFIqqVC8w63oORHXmZsvkntxgGP605Ei4qladvy2xmY=; b=gR1Yn+1jYaQL1mtuuHabfQ/vmMBwiAMc5hEGQIjejSA7aoWFkR7T8ycw suJKiMmq63+8xsyXsC/6qhovuDPF0wNmqN1DaX7oWYDRZopyCyI2YcsrL BcCv7UdO640HtzlDxTFspUDlzaBRUmsrJqioz6cytpdqkKdvNX+qdg+LA c=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AhYFAM/21lOtJV2S/2dsb2JhbABZgw5SVwTMCYdPAYEVFneEBAEBBDoxAwYFDgICAQgYHhAbFyUCBAENBYhCDb5jEwQEjmYQAgFPB4RKBZtMlEyDSWyBRQ X-IronPort-AV: E=Sophos;i="5.01,753,1400025600"; d="scan'208";a="343493083" Received: from rcdn-core-10.cisco.com ([173.37.93.146]) by rcdn-iport-8.cisco.com with ESMTP; 29 Jul 2014 01:24:02 +0000 Received: from xhc-rcd-x14.cisco.com (xhc-rcd-x14.cisco.com [173.37.183.88]) by rcdn-core-10.cisco.com (8.14.5/8.14.5) with ESMTP id s6T1O2Zg030480 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Tue, 29 Jul 2014 01:24:02 GMT Received: from xmb-aln-x08.cisco.com ([169.254.3.252]) by xhc-rcd-x14.cisco.com ([173.37.183.88]) with mapi id 14.03.0123.003; Mon, 28 Jul 2014 20:24:02 -0500 From: "Tarek Saad (tsaad)" To: Loa Andersson , "mpls@ietf.org" Thread-Topic: IPR poll on draft-tsaad-mpls-p2mp-loose-path-reopt Thread-Index: AQHPqRLjilIDGNuQqUyaq80zeaLNlpu18Q8AgABlGwA= Date: Tue, 29 Jul 2014 01:24:01 +0000 Message-ID: References: <53D41400.9030805@pi.nu> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.4.3.140616 x-originating-ip: [10.86.243.77] Content-Type: text/plain; charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/Q3xvaezhGelfB4dXFyw3TtRaJAw Cc: "draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org" , "robert.h.venator.civ@mail.mil" , "mpls-chairs@tools.ietf.org" , "Zafar Ali \(zali\)" Subject: Re: [mpls] IPR poll on draft-tsaad-mpls-p2mp-loose-path-reopt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Jul 2014 01:24:05 -0000 Hi Loa, None, except the IPR pointed by Rakesh below. Regards, Tarek On 2014-07-28, 11:22 AM, "Rakesh Gandhi (rgandhi)" wrote: >Hi Loa,=20 > >I am aware of one IPR and has been disclosed as follows. > >https://datatracker.ietf.org/ipr/2307/ > >Thanks, >Rakesh > > >On 2014-07-26 4:48 PM, "Loa Andersson" wrote: > >>Working Group, >> >>The authors of draft-tsaad-mpls-p2mp-loose-path-reopt have told >>us that the draft is ready to be accepted as a working group document. >> >>Before we do poll to see if we have consensus to accept the document >>as a working group document we want to do an IPR poll on the document. >> >>This mail starts that IPR poll. >> >>Are you aware of any IPR that applies to draft-tsaad-mpls-p2mp-loose- >>path-reopt? >> >>If so, has this IPR been disclosed in compliance with IETF IPR rules >>(see RFCs 3979, 4879, 3669 and 5378 for more details). >> >>Currently there are one IPR disclosures that relates to this document. >> >>If you are listed as a document author or contributor please respond to >>this email regardless of whether or not you are aware of any relevant >>IPR. *The response needs to be sent to the MPLS wg mailing list.* The >>document will not advance to the next stage until a response has been >>received from each author and contributor. >> >>If you are on the MPLS WG email list but are not listed as an author or >>contributor, then please explicitly respond only if you are aware of any >>IPR that has not yet been disclosed in conformance with IETF rules. >> >>Thanks, Loa >>(as MPLS WG co-chair) >>--=20 >> >> >>Loa Andersson email: loa@mail01.huawei.com >>Senior MPLS Expert loa@pi.nu >>Huawei Technologies (consultant) phone: +46 739 81 21 64 > From nobody Mon Jul 28 19:40:34 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 289171ABB26 for ; Mon, 28 Jul 2014 19:40:28 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Gvg6o-kSYGns for ; Mon, 28 Jul 2014 19:40:23 -0700 (PDT) Received: from alln-iport-2.cisco.com (alln-iport-2.cisco.com [173.37.142.89]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 8ADF21A03FC for ; Mon, 28 Jul 2014 19:40:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2408; q=dns/txt; s=iport; t=1406601623; x=1407811223; h=from:to:cc:subject:date:message-id:in-reply-to: content-id:content-transfer-encoding:mime-version; bh=lzlrYJPGfCiAcAs9hX7o7XZng4dpxXkzcPbkf06M4mk=; b=mnzq15eVkei5TcowRHX0c685EDRmyAWXOoZeiOLEXj1Rw7U0PNgQfRTb Vr71+rkR8WB/gUnN2lzHucDvbXWDcVxreSn+y6fmy4PT4FD5kstSuEtm0 owe8zshG2gBOHnpg9kiPgHKOttuYmFAUZi6KTZ2mmH99Hl7imds88CJh2 E=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AhcFADMJ11OtJV2Y/2dsb2JhbABZgw5SVwTMBIdPAYEUFneEAwEBAQRrAwYFDAIEAQgRAwECAUkXHQgCBAENBYhCDb54EwQEjmYQAgFPBwaERAWbTJRMg0lsAQGBQw X-IronPort-AV: E=Sophos;i="5.01,753,1400025600"; d="scan'208";a="64753946" Received: from rcdn-core-1.cisco.com ([173.37.93.152]) by alln-iport-2.cisco.com with ESMTP; 29 Jul 2014 02:40:21 +0000 Received: from xhc-aln-x08.cisco.com (xhc-aln-x08.cisco.com [173.36.12.82]) by rcdn-core-1.cisco.com (8.14.5/8.14.5) with ESMTP id s6T2eLSc006422 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Tue, 29 Jul 2014 02:40:21 GMT Received: from xmb-rcd-x14.cisco.com ([169.254.4.221]) by xhc-aln-x08.cisco.com ([173.36.12.82]) with mapi id 14.03.0123.003; Mon, 28 Jul 2014 21:40:21 -0500 From: "Zafar Ali (zali)" To: "Rakesh Gandhi (rgandhi)" , Loa Andersson , "mpls@ietf.org" Thread-Topic: IPR poll on draft-tsaad-mpls-p2mp-loose-path-reopt Thread-Index: AQHPqRLjAqTSFhr8h0+Eb9QE+QaIlpu18Q8A///4SgA= Date: Tue, 29 Jul 2014 02:40:20 +0000 Message-ID: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.2.3.120616 x-originating-ip: [10.86.252.53] Content-Type: text/plain; charset="Windows-1252" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/aHG3_UiM6rC4OaAPL2OFLmqEI5I Cc: "draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org" , "robert.h.venator.civ@mail.mil" , "mpls-chairs@tools.ietf.org" Subject: Re: [mpls] IPR poll on draft-tsaad-mpls-p2mp-loose-path-reopt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Jul 2014 02:40:28 -0000 Hi-=20 I am unaware of any IPR other than the one already mentioned by Rakesh. Thanks Regards =8A Zafar -----Original Message----- From: "Rakesh Gandhi (rgandhi)" Date: Monday, July 28, 2014 11:22 AM To: Loa Andersson , "mpls@ietf.org" Cc: "mpls-chairs@tools.ietf.org" , "draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org" , "Tarek Saad (tsaad)" , zali , "robert.h.venator.civ@mail.mil" , "y.kamite@ntt.com" Subject: Re: IPR poll on draft-tsaad-mpls-p2mp-loose-path-reopt >Hi Loa,=20 > >I am aware of one IPR and has been disclosed as follows. > >https://datatracker.ietf.org/ipr/2307/ > >Thanks, >Rakesh > > >On 2014-07-26 4:48 PM, "Loa Andersson" wrote: > >>Working Group, >> >>The authors of draft-tsaad-mpls-p2mp-loose-path-reopt have told >>us that the draft is ready to be accepted as a working group document. >> >>Before we do poll to see if we have consensus to accept the document >>as a working group document we want to do an IPR poll on the document. >> >>This mail starts that IPR poll. >> >>Are you aware of any IPR that applies to draft-tsaad-mpls-p2mp-loose- >>path-reopt? >> >>If so, has this IPR been disclosed in compliance with IETF IPR rules >>(see RFCs 3979, 4879, 3669 and 5378 for more details). >> >>Currently there are one IPR disclosures that relates to this document. >> >>If you are listed as a document author or contributor please respond to >>this email regardless of whether or not you are aware of any relevant >>IPR. *The response needs to be sent to the MPLS wg mailing list.* The >>document will not advance to the next stage until a response has been >>received from each author and contributor. >> >>If you are on the MPLS WG email list but are not listed as an author or >>contributor, then please explicitly respond only if you are aware of any >>IPR that has not yet been disclosed in conformance with IETF rules. >> >>Thanks, Loa >>(as MPLS WG co-chair) >>--=20 >> >> >>Loa Andersson email: loa@mail01.huawei.com >>Senior MPLS Expert loa@pi.nu >>Huawei Technologies (consultant) phone: +46 739 81 21 64 > From nobody Tue Jul 29 01:30:22 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 131B51A00AD for ; Tue, 29 Jul 2014 01:30:20 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 1.748 X-Spam-Level: * X-Spam-Status: No, score=1.748 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, CHARSET_FARAWAY_HEADER=3.2, MIME_8BIT_HEADER=0.3, MIME_CHARSET_FARAWAY=2.45, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id wtDDQ2jzJO8D for ; Tue, 29 Jul 2014 01:30:14 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2D93F1A02C2 for ; Tue, 29 Jul 2014 01:30:14 -0700 (PDT) Received: from 172.18.7.190 (EHLO lhreml402-hub.china.huawei.com) ([172.18.7.190]) by lhrrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id BHR80602; Tue, 29 Jul 2014 08:30:12 +0000 (GMT) Received: from nkgeml407-hub.china.huawei.com (10.98.56.38) by lhreml402-hub.china.huawei.com (10.201.5.241) with Microsoft SMTP Server (TLS) id 14.3.158.1; Tue, 29 Jul 2014 09:30:11 +0100 Received: from NKGEML506-MBX.china.huawei.com ([169.254.3.24]) by nkgeml407-hub.china.huawei.com ([10.98.56.38]) with mapi id 14.03.0158.001; Tue, 29 Jul 2014 16:30:06 +0800 From: Lizhenbin To: "Nobo Akiya (nobo)" , "draft-li-mpls-global-label-usecases@tools.ietf.org" Thread-Topic: Comments on draft-li-mpls-global-label-usecases Thread-Index: Ac+pyGOnOvdR466BTIiQqApCOmu/xgBMxX8p Date: Tue, 29 Jul 2014 08:30:05 +0000 Message-ID: <5A5B4DE12C0DAC44AF501CD9A2B01A8D08233D1D@nkgeml506-mbx.china.huawei.com> References: In-Reply-To: Accept-Language: zh-CN, en-US Content-Language: zh-CN 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ZXIgcmVxdWlyZWQuDQpbUm9iaW5dIFBhcnRseSBhZ3JlZS4gSSByZW1iZXJzIG9uZSB0aGluZyBG b3JkIChmb3VuZGVyIG9mIEZvcmQgY2FyICkgc2FpZCB0aGF0IGlmIEkgYXNrZWQgcGVvcGxlIHdo YXQgcmVxdWlyZWQsIHRoZXkgbWF5IHNheSBhIGZhc3RlciBob3JzZSBpbnN0ZWFkIG9mIGNhci4g DQotIFRoaXMgY2FuIGJlY29tZSBhIHVzZSBjYXNlIGJ1dCB0aGVyZSBhcmUgc29sdXRpb25zIG91 dCB0aGVyZSBhbHJlYWR5Lg0KW1JvYmluXSBQYXJ0bHkgYWdyZWUuIE1QTFMgVEUgZG9lcyB3b3Jr IGFuZCBoYXMgYmVlbiBkZXBsb3llZCB3aWRlbHkuIFdoeSBzZWdtZW50IHJvdXRpbmc/DQpbUm9i aW5dIFJlZ2FyZGluZyB0aGUgbGF0dGVyIHR3bywgbXkgb3BpbmlvbiBpcyB0aGF0IHdlIG5lZWQg dG8gY2hhbmdlIHdpdGggdGltZS4gDQoNCg0KYg0KTXkgMiB5ZW4uDQoNClRoYW5rcyENCg0KLU5v Ym8= From nobody Tue Jul 29 03:22:28 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E93771A0320 for ; Tue, 29 Jul 2014 03:22:26 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id gubX4bh8uXvP for ; Tue, 29 Jul 2014 03:22:22 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D74F91A0324 for ; Tue, 29 Jul 2014 03:22:21 -0700 (PDT) Received: from [192.168.1.133] (81-236-221-144-no93.tbcn.telia.com [81.236.221.144]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id A775B1802B19; Tue, 29 Jul 2014 12:22:19 +0200 (CEST) Message-ID: <53D775E8.7050902@pi.nu> Date: Tue, 29 Jul 2014 12:22:32 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , Adrian Farrel References: <53BAA7BA.2060903@pi.nu> In-Reply-To: <53BAA7BA.2060903@pi.nu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/1Erdt5xBmlhhOCFLvNUkKP42Z04 Cc: "draft-bryant-mpls-oam-udp-return@tools.ietf.org" Subject: [mpls] Closed: Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Jul 2014 10:22:27 -0000 Working Group, This adoption poll has been closed; and we have a new working group document. Can the authors please publish draft-ietf-mpls-oam-udp-return-00, without any other changes than the version and date. /Loa for the wg chairs On 2014-07-07 15:59, Loa Andersson wrote: > Working Group, > > > The authors of draft-bryant-mpls-oam-udp-return has informed us > that the draft is ready to be polled to see if we have consensus > to make it a working group document. > > This mail starts a two week adoption poll. > > We have not yet done the IPR poll, it will be done in parallel to the > adoption poll. > > There are no IPR disclosed against this draft. > > Please send your comments to the mpls working group mailing list > (mpls@ietf.org) > > This adoption poll ends Juli 21, 2014! > > /Loa > for the mpls wg co-chairs > -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Tue Jul 29 07:53:47 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B7AD71B2933; Tue, 29 Jul 2014 07:53:44 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id CyMirroDghWe; Tue, 29 Jul 2014 07:53:36 -0700 (PDT) Received: from aer-iport-1.cisco.com (aer-iport-1.cisco.com [173.38.203.51]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 7BA351B2822; Tue, 29 Jul 2014 07:53:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=59017; q=dns/txt; s=iport; t=1406645615; x=1407855215; h=message-id:date:from:reply-to:mime-version:to:cc:subject: content-transfer-encoding; bh=gWxjGB09u62iIinWcfsfv/YWkoPC3EYdG/DfsTDTC74=; b=XbbRR243kGaqpk9ZHQJCohuYaTbCxkaDnP/GWYsU69vTms9xKbQfIdmS hw7T9Za9CGLa2iPNrPmRgJOsa2A+kygYXGipJdONEx7Sv7oOe1TQ5XhWo kI8AsMqkGslfGw2uucS5NmZIwKpIjDNkxlIYEhUWDxNPmrVeBC64fR6h9 4=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AqAEAHq011OtJssW/2dsb2JhbABQCdRWgxyBJXeEJAECChEvBgwbEg80AjgUAQwBBwEBF4gnn1+PBpBVF45hEAMBJC4FhFEBBJcqhCKUToNKgW4BAR4EAg X-IronPort-AV: E=Sophos;i="5.01,757,1400025600"; d="scan'208";a="126451892" Received: from aer-iport-nat.cisco.com (HELO aer-core-1.cisco.com) ([173.38.203.22]) by aer-iport-1.cisco.com with ESMTP; 29 Jul 2014 14:53:31 +0000 Received: from cisco.com (mrwint.cisco.com [64.103.70.36]) by aer-core-1.cisco.com (8.14.5/8.14.5) with ESMTP id s6TErVKA022467 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 29 Jul 2014 14:53:31 GMT Received: from [IPv6:::1] (localhost [127.0.0.1]) by cisco.com (8.14.4+Sun/8.8.8) with ESMTP id s6TErTA7003579; Tue, 29 Jul 2014 15:53:30 +0100 (BST) Message-ID: <53D7B569.60400@cisco.com> Date: Tue, 29 Jul 2014 15:53:29 +0100 From: Stewart Bryant User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: pwe3 , "pwe3-chairs@tools.ietf.org" Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/vd1gTJVP1j-UjEvjhGimDpN6k8k Cc: "mpls@ietf.org" Subject: Re: [mpls] [PWE3] WG Last Call for draft-ietf-pwe3-endpoint-fast-protection-01 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: stbryant@cisco.com List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Jul 2014 14:53:45 -0000 I do not support the publication of this draft without: 1) An assurance that MPLS WG has reviewed it and is happy with the extensions that seem to be made to the MPLS architecture 2) A formal description of those extensions or a pointer to those extensions in another RFC. 3) Significant clarification of how the detail of this mechanism works. For this to work you need to have co-ordinated label spaces in multiple PEs which is something that was investigated by the SPRING WG and found not to work, particularly when different manufacturers equipments were involved. As far as I can see you also need to peek below the top of stack to do a fast reroute operation which is not a currently defined MPLS operation. There seem to be a lot of details and clarifications missing that need to be provided, and I am not entirely convinced that all of the items declared out of scope are legitimately out of scope and not needed in order for a multi-vendor solution to be implemented. It would be useful to me (and I suspect to other readers) to see what the dataplane looks like at various points in the normal and repair path to verify that all parties have the right information for this to work under normal and various fault conditions. I have a number of comments inline that need to be addressed before this can proceed. - Stewart PW Endpoint Fast Failure Protection draft-ietf-pwe3-endpoint-fast-protection-01 Abstract This document specifies a fast mechanism for protecting pseudowires against egress endpoint failures, including egress attachment circuit failure, egress PE failure, multi-segment PW terminating PE failure, and multi-segment PW switching PE failure. Designed on the basis of multi-homed CE, PW redundancy, upstream label assignment and context specific label switching, the mechanism enables local repair to be performed by the router upstream adjacent to a failure. In particular, the router can restore PW traffic in the order of tens of milliseconds, SB> Not sure it's wise to specify a performance claim in a standards SB> track RFC. by transmitting the traffic to a protector through a pre-established bypass tunnel. Therefore, the mechanism can reduce traffic loss before global repair reacts to the failure and the network converges on the topology changes due to the failure. === 1. Introduction Per RFC 3985, RFC 4447 and RFC 5659, a pseudowire (PW) or PW segment can be thought of as a connection between a pair of forwarders hosted by two PEs, carrying an emulated layer-2 service over a packet switched network (PSN). In the single-segment PW (SS-PW) case, a forwarder binds a PW to an attachment circuit (AC). In the multi- segment PW (MS-PW) case, a forwarder on a terminating PE (T-PE) binds a PW segment to an AC, while a forwarder on a switching PE (S-PE) binds one PW segment to another PW segment. In each direction between the PEs, PW packets are transported by a PSN tunnel, which is called a transport tunnel. SB> Did we ever your the term transport tunnel before? 3. Reference Models and Failure Cases The mechanism in this document intends to use these topologies for local repair purposes. SB> The toplology is not a mechanism. Are you saying that the mechanims SB> only works in this topology? This SHALL enable local repair and global repair to work in tandem to achieve broader coverage of protection for services. SB> I have no idea how a SHALL in capitals applies here. 3.1. Single-Segment PW |<-------------- PW1 --------------->| - PE1 -------------- P1 ---------------- PE2 - / \ / \ CE1 CE2 \ / \ / - PE3 -------------- P2 ---------------- PE4 - |<-------------- PW2 --------------->| Figure 1 Each CE is multi-homed to two PEs. Hence, there are two divergent paths between the CEs. SB> It does not follow that the paths are divergent! Who knows SB> what happens in the IP layer and the underlying transport SB> network. At any given time, each CE sends traffic via only one AC and receives traffic via only one AC. The two ACs MAY or MAY NOT be the same. SB> May not be the same what? If they are actually the same AC you SB> have no redundancy. The AC used to send traffic is determined by the CE, and MAY rely on an end-to-end OAM mechanism between the CEs. The AC used for the CE to receive traffic is determined by the state of the network and the protection mechanism in use, as described later in this document. From the perspective of traffic flowing towards a given CE, the set of PWs, PEs and ACs involved can be viewed to serve primary and backup (or active and standby) roles. When the network is in a steady state, the PW that is intended to carry the traffic is referred to as a primary PW. The PE at the egress of the primary PW is a primary PE. The AC connecting the CE and the primary PE is a primary AC. The other PW may be used to carry the traffic upon a network failure, and is referred to as a backup PW. The PE at the egress of the backup PW is a backup PE. The AC connecting the CE and the backup PE is a backup AC. In this document, the following primary and backup roles are assigned for the traffic going from CE1 to CE2: Primary PW: PW1 Yimin Shen, et al. Expires January 25, 2015 [Page 5] Internet-Draft PW Endpoint Fast Failure Protection July 2014 Primary PE: PE2 Primary AC: CE2-PE2 Backup PW: PW2 Backup PE: PE4 Backup AC: CE2-PE4 In this case, an egress AC failure refers to the failure of the AC CE2-PE2. An egress node failure refers to the failure of PE2. The backup PE, backup PW and backup AC may be used to carry traffic after a PW endpoint failure, when CE1 and CE2 switches traffic to PW2 in local repair or global repair, as described later in this document. |<-------------- PW1 --------------->| ------------- P1 ---------------- PE2 - / \ / \ CE1 -- PE1 CE2 \ / \ / ------------- P2 ---------------- PE4 - |<-------------- PW2 --------------->| Figure 2 Figure 2 shows another possible scenario, where CE1 is single-homed to PE1, while CE2 remains multi-homed to PE2 and PE4. From the perspective of egress protection for the traffic from CE1 to CE2, this topology is not much different than Figure 1. However, for the SB> "not much different than Figure 1" is not helpful, either it is the same, or you need to explain the difference. traffic in the direction from CE2 to CE1, PE1 must anticipate traffic on both PW1 and PW2, and sends it to CE1 over the AC CE1-PE1. SB> What does it mean to anticipate traffic. 3.2. Multi-Segment PW Yimin Shen, et al. Expires January 25, 2015 [Page 6] Internet-Draft PW Endpoint Fast Failure Protection July 2014 |<--------------- PW1 --------------->| |<----- SEG1 ----->|<----- SEG2 ----->| - TPE1 -------------- SPE1 --------------- TPE2 - / \ / \ CE1 CE2 \ / \ / - TPE3 -------------- SPE2 --------------- TPE4 - |<----- SEG3 ----->|<----- SEG4 ----->| |<--------------- PW2 --------------->| Figure 3 Figure 3 shows a topology that is similar to Figure 1 but in an MS-PW environment. PW1 and PW2 are both MS-PWs. PW1 is established between TPE1 and TPE2, and switched between segments SEG1 and SEG2 at SPE1. PW2 is established between TPE3 and TPE4, and switched between segments SEG3 and SEG4 at SPE2. CE1 is multi-homed to TPE1 and TPE3. CE2 is multi-homed to TPE2 and TPE4. The transport tunnels of the PW segments are not shown in this figure for clarity. In this document, the following primary and backup roles are assigned for the traffic going from CE1 to CE2: Primary PW: PW1 Primary T-PE: TPE2 Primary S-PE: SPE1 Primary AC: CE2-TPE2 Backup PW: PW2 Backup T-PE: TPE4 Backup S-PE: SPE2 Backup AC: CE2-TPE4 In this case, an egress AC failure refers to the failure of the AC CE2-TPE2. An egress node failure refers to the failure of TPE2. An S-PE failure refers to the failure of SPE1. Yimin Shen, et al. Expires January 25, 2015 [Page 7] Internet-Draft PW Endpoint Fast Failure Protection July 2014 The backup T-PE, backup PW and backup AC are used for protecting the primary PW against egress AC failure and egress node failure. The backup S-PE and the backup PW are used for protecting the primary PW against S-PE failure, as described later in this document. For consistency with the SS-PW scenario, primary T-PEs and a primary S-PEs may simply be referred to as primary PEs in this document, where specifics is not required. Similarly, backup T-PEs and backup S-PEs may be referred to as backup PEs. 4. Theory of Operation The fast protection mechanism in this document provides three types of protection for PWs, corresponding to the three types of failures described in Section 1. a. Egress AC protection b. Egress (T-)PE node protection c. S-PE node protection The mechanism assumes a multi-homed CE with connectivity to a primary PE and a backup PE, and the existence of a backup PW in the network. In S-PE node protection, it also assumes the existence of a backup S-PE on the backup PW. SB> Do the PWs need to be symmetric - could you have more S-PEs on one that you have on the other? 4.1. Local Repair and Protector The mechanism relies on local repair to be performed by routers SB> Do you mean routers or PEs? Routers of more likely LSRs operate at a different layer and have no business knowing about PWs. SB> Has this work been reviewed my MPLS WG? I am concerned that you are doing a bunch of layer violation without explaining the how this is achieved or whether it is acceptable within the MPLS architecture. upstream adjacent to failures. Each of these routers is referred to as a "point of local repair" (PLR). A PLR MUST be able to detect a failure by using a rapid mechanism, such as physical layer failure detection, Bidirectional Failure Detection (BFD) (RFC 5880), etc. In anticipation of the failure, the PLR MUST also pre-establish a bypass PSN tunnel to a "protector", and pre-install a bypass route in the data plane. The bypass tunnel MUST have the property that it will not be affected by the topology changes in the event of the failure. SB> This is far too imprecise - you need to separate operations and topologies in the PW layer from operations and topologies in the PSN layer SB> In each case you need to be clear how you are detecting failure by specifying the MEPs and MIPs you are testing. Upon detecting the failure, the PLR MUST invoke the bypass route in the data plane, and reroute PW traffic to the protector through the bypass tunnel. The protector MUST in turn send the traffic to the target CE. SB> No the protector knows nothing about CEs - they are in the client layer, and you can only protect at the server layer or the server's server layer. This procedure is referred to as local repair. Different routers may serve as PLR and protector in different scenarios. SB> Remember they are not routers - they are xPEs or LSRs. SB> In each of the following we need to note that these are not RFC3985 PEs, even if they take no part in the protection such as the PEs on the left. Indeed I am wondering if you need to update RFC3985 and RFC5659 Yimin Shen, et al. Expires January 25, 2015 [Page 8] Internet-Draft PW Endpoint Fast Failure Protection July 2014 o In egress AC protection, the PLR is the primary PE that terminates the primary PW and hosts the primary AC, and the protector is the backup PE (Figure 4). |<-------------- PW1 --------------->| - PE1 -------------- P1 ---------------- PE2 - / PLR \ / | \ CE1 bypass| CE2 \ | / \ | / - PE3 -------------- P2 ---------------- PE4 - protector |<-------------- PW2 --------------->| Figure 4 o In egress PE node protection, the PLR is the penultimate hop router of the transport tunnel of the primary PW, and the protector is the backup PE (Figure 5). |<-------------- PW1 --------------->| - PE1 -------------- P1 ------- P3 ----- PE2 - / PLR \ \ / \ \ CE1 bypass\ CE2 \ \ / \ \ / - PE3 -------------- P2 ---------------- PE4 - protector |<-------------- PW2 --------------->| Figure 5 SB> Note that it is nothing like as clean as this, if as you later have, some of P3's traffic needs to go to PE4 and some to PE5. Also what about the o In S-PE node protection, the PLR is the penultimate hop router of the transport tunnel of the primary PW segment, and the protector is the backup S-PE (Figure 6). Yimin Shen, et al. Expires January 25, 2015 [Page 9] Internet-Draft PW Endpoint Fast Failure Protection July 2014 |<--------------- PW1 --------------->| |<----- SEG1 ----->|<----- SEG2 ----->| - TPE1 ----- P4 ----- SPE1 -------------- TPE2 - / PLR \ \ / \ \ CE1 bypass\ CE2 \ \ / \ \ / - TPE3 --------------- SPE2 -------------- TPE4 - protector |<----- SEG3 ----->|<----- SEG4 ----->| |<--------------- PW2 --------------->| Figure 6 A PLR can realize its role based on configuration or the signaling of transport tunnel. For example, in the case where the transport tunnel is signaled by RSVP, the penultimate hop router could realize SB> Could realize is not sufficient. The mechanism needs to be unconditional. that it is the PLR for egress (T-)PE or S-PE failure based on the RRO in Resv message, which should indicate that the router is one hop away from the PE. The detail of how this could be achieved on a per- protocol basis is out of the scope of this document. SB> So where is it in scope? How do I find out how to do it? In all scenarios, when a PLR reroutes traffic through a bypass tunnel to a protector during local repair, it MUST keep the label of the primary PW intact in the packets. This obviates the need for the PLR to maintain bypass routes on a per-PW basis, and allows a single bypass tunnel to carry traffic for multiple PWs. SB> OK, but didn't I read something about PE protecting subsets of the egress traffic of other PEs? How would that work without per PW information? The procedure also requires that the protector SHOULD be able to forward the traffic based on a PW label that is assigned by the primary PE, and ensure the traffic to eventually reach the target CE. From the protector's perspective, this PW label is an upstream assigned label (RFC 5331). SB> .. but the protector may be a P router and know nothing about PWs. To accomplish this, the protector SHOULD learning the PW label from the primary PE prior to the failure, and install proper forwarding state for the PW label in a dedicated label space for the primary PE. SB> This is a new PE to P router protocol During local repair, the protector SHOULD perform PW label lookup in this label space. SB> This has to be signed off by MPLS WG SB> How can this only be a SHOULD - why is it not a MUST? SB> What do you do to ensure that they even have compatible label managers? SB> Doesn't this mean a P router looking up two labels to do the repair? The above examples have shown the scenarios where the protectors are backup (T/S-)PEs. In other scenarios, a protector may be a dedicated router that assumes such role, separate from the backup (T/S-)PE of a primary PW. During local repair, the PLR MUST still reroute traffic to the protector through a bypass tunnel. The protector MUST in turn send the traffic to the backup (T/S-)PE, which MUST then send the Yimin Shen, et al. Expires January 25, 2015 [Page 10] Internet-Draft PW Endpoint Fast Failure Protection July 2014 traffic to the target CE via a backup AC or a backup PW segment. More detail will be described in Section 4.3. 4.2. Context Identifier A protector MAY protect multiple primary PEs. SB> This requires that a P router knows about PWs - how does it do that? The protector MUST maintain a separate label space for each primary PE. Likewise, the PWs terminated on a primary PE MAY be protected by multiple protectors, each for a subset of the PWs. In any case, a given primary PW SHOULD be associated with one and only one pair of {primary PE, protector}. An IPv4/v6 address is assigned to each ordered pair of {primary PE, protector} to facilitate protection establishment. This address is referred to as a "context identifier". It MUST be globally unique, or unique in the address space of the network where the primary PE and the protector reside. SB> I think you need to make clear that this is not backwards compatible with existing PW PEs. SB> You also need to explain how the IP based context identifier mechanism works. Is it in the control plane or the data plane? 4.2.1. Semantics The semantics of a context identifier is twofold. o It identifies a primary PE and an associated protector. In other words, it identifies a primary PE on a per protector basis. A given primary PE may be protected by multiple protectors, each for a subset of the primary PWs terminated on the primary PE. A distinct context identifier MUST be assigned to the primary PE and each protector. For each primary PW, its ingress PE MUST set up or resolve a transport tunnel with destination as the context identifier of the {primary PE, protector}, rather than a private IP address of the primary PE. This not only allows the transport tunnel to reach the primary PE, but also conveys the identity of the protector to the PLR(s) along the transport tunnel. Each PLR can in turn use this information to set up a bypass tunnel to the protector without relying on local configuration. o It indentifies the primary PE's label space on the protector. The protector may protect PWs for multiple primary PEs. For each primary PE, it MUST maintain a separate label space to store the PW labels assigned by that primary PE. It MUST associate a PW label with a label space via the context identifier of the {primary PE, protector}, as described below. SB> Is this context identifier an IP address or an MPLS label? Where is it carried? In addition to the normal LDP PW signaling, the primary PE MUST have a targeted LDP session with the protector, and advertise PW labels to the protector via LDP Label Mapping messages (See Yimin Shen, et al. Expires January 25, 2015 [Page 11] Internet-Draft PW Endpoint Fast Failure Protection July 2014 Section 5 for detail). The primary PE MUST attach the context identifier to each message. Upon receiving the message, the protector MUST install the advertised PW label in the label space identified by the context identifier. SB> I am currently confused about how a data packet carries the PW label provided by another PE. When a PLR sets up or resolve a bypass tunnel to the protector, it MUST set the destination to the context identifier, rather than a private IP address of the protector. Once established, the bypass tunnel, with either its MPLS label or IP tunnel destination address, is used as the identifier of label space. On the protector, all PW packets received on the bypass tunnel MUST be forwarded based on a label lookup in that label space. SB> I do not understand the data plane structure that the above sentence is describing. 4.2.2. Advertisement and Path Computation Using a context identifier as destination for both transport tunnel and bypass tunnel requires both the primary PE and the protector to advertise the context identifier via IGP as an IP address reachable through both routers in routing domain and/or TE domain. This imposes the following requirements on path computation for these tunnels. o For the transport tunnel, the ingress PE MUST choose the primary PE as the actual endpoint. o For the bypass tunnel, the PLR MUST choose the protector as the actual endpoint. In egress (T-)PE node protection and S-PE node protection, the bypass tunnel MUST avoid the primary (S-)PE. The detail of how the primary PE and the protector may advertise a context identifier is independent of this mechanism and out of the scope of this document. SB> Given that you give signalling data structures later, I am confused as to how this can be out of scope of this text. Surely this is needed to implement an interoperable solution? One approach would be to advertise it as a virtual proxy node connected to both routers, with the link between the proxy node and the primary PE having a more preferable IGP or TE metric than the link between the proxy node and the protector. The ultimate goal is for a path computation algorithm, such as CSPF (constrained shortest path first), LFA (RFC 5286) and MRT ([IP-LDP- FRR-MRT]), to be able to compute the paths that meet the above requirements. 4.3. Protection Models There are two protection models based on the location of a protector. A network MAY use either model, or a combination of both. Yimin Shen, et al. Expires January 25, 2015 [Page 12] Internet-Draft PW Endpoint Fast Failure Protection July 2014 4.3.1. Co-located Protector In this model, the protector is a backup PE that is directly connected to the target CE via a backup AC, or it is a backup S-PE on a backup PW. That is, the protector is co-located with the backup (S-)PE. Examples of this model have been introduced in Figure 4, Figure 5 and Figure 6 in Section 4.1. In egress AC protection and egress PE node protection, when a protector receives traffic from the PLR, it forwards the traffic to the CE via the backup AC. This is shown in Figure 7, where PE2 is the PLR for egress AC failure, P3 is the PLR for PE2 failure, and PE4 (the backup PE) is the protector. |<-------------- PW1 --------------->| - PE1 -------------- P1 ------- P3 ----- PE2 ---- / PLR \ PLR \ / \ | \ CE1 bypass\ |bypass CE2 \ \ | / \ \ | / - PE3 -------------- P2 ---------------- PE4 ---- protector |<-------------- PW2 --------------->| Figure 7 In S-PE node protection, when a protector receives traffic from the PLR, it MUST forward the traffic via the next segment of the backup PW. The T-PE of the backup PW MUST in turn forward the traffic to the CE via a backup AC. This is shown in Figure 8, where P4 is the PLR for SPE1 failure, and SPE2 (the backup S-PE) is the protector for SPE1. Yimin Shen, et al. Expires January 25, 2015 [Page 13] Internet-Draft PW Endpoint Fast Failure Protection July 2014 |<--------------- PW1 --------------->| |<----- SEG1 ----->|<----- SEG2 ----->| - TPE1 ----- P4 ----- SPE1 -------------- TPE2 - / PLR \ \ / \ \ CE1 bypass\ CE2 \ \ / \ \ / - TPE3 --------------- SPE2 -------------- TPE4 - protector |<----- SEG3 ----->|<----- SEG4 ----->| |<--------------- PW2 --------------->| Figure 8 In the co-located protector model, the number of context identifiers needed by a network is the number of distinct {primary PE, backup PE} pairs. From the perspective of scalability, the model is suitable for networks where the number of backup PEs for any given primary PE is relatively small. 4.3.2. Centralized Protector In this model, the protector is a dedicated P router or PE router that serves the role. In egress AC protection and egress PE node protection, the protector MAY or MAY NOT be a backup PE with a direct connection to the target CE. In S-PE node protection, the protector MAY or MAY NOT be a backup S-PE on the backup PW. In egress AC protection and egress PE node protection, when the protector receives traffic from the PLR, if the protector has a direct connection (i.e. backup AC) to the CE, it MUST forward the traffic to the CE via the backup AC, which is similar to Figure 7. Otherwise, it MUST forward the traffic to a backup PE, which MUST then forward the traffic to the CE via a backup AC. This is shown in Figure 9, where the protector receives traffic from P3 (the PLR for egress PE failure) or PE2 (the PLR for egress AC failure) and forwards the traffic to PE4 (the backup PE). The protector may be protecting other PWs as well, which is not shown in this figure for clarity. SB> If you are going to cover the shared case, I think you need to make it much clearer how the PWs are identified from the received data packets. Yimin Shen, et al. Expires January 25, 2015 [Page 14] Internet-Draft PW Endpoint Fast Failure Protection July 2014 |<------------- PW1 --------------->| - PE1 ------------- P1 ------- P3 ----- PE2 -- / PLR \ PLR \ / \ / \ / bypass\ /bypass \ / \ / \ CE1 protector CE2 \ \ / \ \ / \ \ / \ \ / - PE3 ------------- P2 -----------------PE4 -- |<------------- PW2 --------------->| Figure 9 In S-PE node protection, when the protector receives traffic from the PLR, if the protector is a backup S-PE of the backup PW, it MUST forward the traffic via the next segment of the backup PW, and the T-PE of the backup PW MUST forward the traffic to the CE via a backup AC, which is similar to Figure 8. Otherwise, the protector MUST first forward the traffic to the backup S-PE, which MUST then forward the traffic via the next segment of the backup PW. Finally, the T-PE of the backup PW MUST forward the traffic to the CE via a backup AC. This is shown in Figure 10, where the protector forwards traffic to SPE2 (the backup S-PE), SPE2 forwards the traffic to TPE4 via SEG4, and TPE4 finally forwards traffic to CE2. The protector may be protecting other PW segments as well, which is not shown in this figure for clarity. Yimin Shen, et al. Expires January 25, 2015 [Page 15] Internet-Draft PW Endpoint Fast Failure Protection July 2014 |<--------------- PW1 --------------->| |<----- SEG1 ----->|<----- SEG2 ----->| - TPE1 ----- P4 ----- SPE1 -------------- TPE2 - / PLR \ \ / \ \ / bypass\ \ / \ \ CE1 protector CE2 \ \ / \ \ / \ \ / \ \ / - TPE3 --------------- SPE2 -------------- TPE4 - |<----- SEG3 ----->|<----- SEG4 ----->| |<--------------- PW2 --------------->| Figure 10 The centralized protector model provides the convenience for multiple primary PEs to share one protector. Each primary PE MAY only need the one protector to protect all of its PWs. From the perspective of scalability, the number of context identifiers needed by a network MAY be bound to the number of primary PEs. 4.4. Transport Tunnel The ingress PE of a primary PW associates the PW with the primary egress PE through LDP signaling. In addition, as mentioned in Section 4.2.1, the ingress PE MUST associate the transport tunnel of the PW with the context identifier of the {primary PE, protector}, and set up or resolve the transport tunnel by using the context identifier as destination. This not only ensures that PW traffic be transported to the primary PE, but also facilitates bypass tunnel establishment at PLR(s), as the context identifier implies the identity of the protector as well. This is also the case for a multi-segment PW, where the ingress PE and egress PE are T/S-PEs. The association between the transport tunnel and the context identifier at the ingress PE MAY be achieved by configuration or an auto-discovery mechanism. In the later case, the ingress PE MAY learn the context identifier from the primary (egress) PE, if the primary PE advertises the context identifier as "third party next hop" in IPv4/v6 Interface_ID (RFC 3471, RFC 3472) in the LDP Label Mapping message of the primary PW. Yimin Shen, et al. Expires January 25, 2015 [Page 16] Internet-Draft PW Endpoint Fast Failure Protection July 2014 4.5. Bypass Tunnel A PLR may protect multiple PWs associated with one or multiple pairs of {primary PE, protector}. The PLR MUST establish a bypass tunnel to each protector for each distinct context identifier associated with that protector. The destination of the bypass tunnel MUST be the context identifier (Section 4.2.1). The PLR may derive the context identifier from the destination of the transport tunnel that traverses it. For examples, in Figure 7 and Figure 9, a bypass tunnel is established from PE2 (PLR for egress AC failure) to the protector, and another bypass tunnel is established from P3 (PLR for egress node failure) to the protector. In Figure 8 and Figure 10, a bypass tunnel is established from P4 (PLR for S-PE failure) to the protector. During local repair, the PLR reroutes traffic to the protector through a bypass tunnel with PW label intact in the packets. This normally involves pushing a label to the label stack, if the bypass tunnel is an MPLS tunnel, or pushing an IP header to the packets, if the bypass tunnel is an IP tunnel. SB> Surely it is normally a swap? SB> I am somewhat confused about what this all looks like when this is IP. The only PS/IP other than for SATOP are defined by L2TPv3 WG. There is no IP MS-PW definition that I am aware of. I think you need to be much clearer about what is going on when you discuss PW over IP egress repair. The protector MUST in turn forward the traffic based on the PW label. To achieve such kind of forwarding, the protector MUST rely on the bypass tunnel as a context to determine the primary PE's label space. If the bypass tunnel is an MPLS tunnel, the protector MUST have assigned a non-reserved label to the bypass tunnel during the establishment of the bypass tunnel, and hence this label can serve as the context. If the bypass tunnel is an IP tunnel, the protector can simply rely on the context identifier carried as the destination address in IP header. A bypass tunnel MUST have the property that it is not affected by the topology changes caused by the failure. Therefore, it can be used to transmit traffic for local repair. It SHOULD remain effective, until the traffic is moved to another fully functional egress AC, PW and/or transport tunnel. 4.6. Forwarding State on Protector A protector MUST learn PW labels from all the primary PEs that it protects (Section 5.2), and maintain the PW labels in respective label spaces of the primary PEs. In the control plane, a label space is identified by the context identifier of a pair of {primary PE, protector}. In the forwarding plane, it is indicated by the bypass tunnel(s) destined for the context identifier. SB> Are you saying that this mechanism mandates no PHP? Yimin Shen, et al. Expires January 25, 2015 [Page 17] Internet-Draft PW Endpoint Fast Failure Protection July 2014 4.6.1. Examples of Co-located Protector In Figure 7, PE4 is a co-located protector that protects PW1 against egress AC failure and egress node failure. It maintains a label space for PE2, which is identified by the context identifier of {PE2, PE4}. It learns PW1's label from PE2, and installs an forwarding entry for the label in that label space. The nexthop of the forwarding entry indicates a label pop with outgoing interface pointing to the backup AC CE2-PE4. SB> I am not sure what you are describing in the above. Is this an MPLS operation or a PW operation. If the latter it is not a simple label pop. In Figure 8, SPE2 is a co-located protector that protects PW1 against S-PE failure. It maintains a label space for SPE1, which is identified by the context identifier of {SPE1, SPE2}. It learns SEG1's label from SPE1, and installs a forwarding entry in the label space. The nexthop of the forwarding entry indicates a label swap to SEG4's label. 4.6.2. Examples of Centralized Protector In the centralized protector model, for each primary PW of which the protector is not a backup (S-)PE, the protector MUST also learn the label of the backup PW from the backup (S-)PE (Section 5.3). This is the backup (S-)PE that the protector will forward traffic to. The protector MUST install a forwarding entry with label swap from the primary PW's label to the backup PW's label. In Figure 9, the protector is a centralized protector that protects PW1 against egress AC failure and egress node failure. It maintains a label space for PE2, which is identified by the context identifier of {PE2, protector}. It learns PW1's label from PE2, and PW2's label from PE4. It installs a forwarding entry for PW1's label in the label space. The nexthop of the forwarding entry indicates a label swap to PW2's label. In Figure 10, the protector is a centralized protector that protects the PW segment SEG1 of PW1 against the node failure of SPE1. It maintains a label space for SPE1, which is identified by the context identifier of {SPE1, protector}. It learns SEG1's label from SPE1, and learns SEG3's label from SPE2. It installs a forwarding entry for SEG1's label in the label space. The nexthop of the forwarding entry indicates a label swap to SEG3's label. 5. LDP Extensions As described in previous sections, a targeted LDP session MUST be established between each pair of primary PE and protector. The primary PE sends Label Mapping message over this session to advertise primary PW labels to the protector. In the centralized protector Yimin Shen, et al. Expires January 25, 2015 [Page 18] Internet-Draft PW Endpoint Fast Failure Protection July 2014 model, a targeted LDP session MUST also be established between a backup (S-)PE and a protector. The backup PE sends Label Mapping message over this session to advertise backup PW labels to the protector. To facilitate the procedures, this document defines a new "Protection FEC Element" TLV. The Label Mapping messages of both the LDP sessions above MUST carry this TLV to indicate the identity of a primary PW. Specifically, in the centralized protector model, the Protection FEC Element TLV advertised by a backup (S-)PE MUST match the one advertised by the primary PE, so that the protector can associate the primary PW's label with the backup PW's label, and perform a label swap. This document also defines the encoding of Capability Parameter TLV (RFC 5561) for a new "Egress Protection Capability", to allow a protector to announce its capability of processing the above Protection FEC Element TLV and performing context specific label switching for PW labels. The procedures in this section are only applicable, if the protector advertises the Egress Protection Capability, the primary PE supports the advertisement of the Protection FEC Element TLV, and in the centralized protector model, the backup PE also supports the advertisement of the Protection FEC Element TLV. 5.1. Egress Protection Capability TLV A protector MUST advertise the Egress Protection Capability TLV in its Initialization message and Capability message, over the LDP session with a primary PE. In the centralized protector model, the protector MUST also advertise the TLV over the LDP session with a backup PE. The TLV carries one or multiple context identifiers. To the primary PE, the TLV SHOULD carry the context identifier of the {primary PE, protector}. In the centralized protector model, the TLV SHOULD carry to the backup PE multiple context identifiers, one for each {primary PE, protector} where the backup PE serves as a backup for the primary PE. This TLV SHOULD NOT be advertised by the primary PE or the backup PE to the protector. The processing of the Egress Protection Capability TLV by a receiving router SHOULD follow the procedures defined in RFC 5561. In particular, the router SHOULD advertise PW information to the protector by using the Protection FEC Element TLV, only after it has received the Egress Protection Capability TLV from the protector. It SHOULD validate each context identifier included in the TLV, and advertise the information of only those PWs that are associated with the context identifier. It SHOULD withdraw previously advertised Yimin Shen, et al. Expires January 25, 2015 [Page 19] Internet-Draft PW Endpoint Fast Failure Protection July 2014 Protection FEC TLVs, when the protector has withdrawn a previously advertised context identifier or the entire Egress Protection Capability TLV via Capability message. The encoding of the Egress Protection Capability TLV is defined as below. It conforms to the format of Capability Parameter TLV specified in RFC 5561. 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |U|F| Egress Protection (TBD) | Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |S| Reserved | | +-+-+-+-+-+-+-+-+ | | | ~ Capability Data = context identifier(s) ~ | | | +-+-+-+-+-+-+-+-+ | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 11 The U-bit MUST be set to 1 so that a receiver MUST silently ignore this TLV if unknown to it, and continue processing the rest of the message. The F-bit MUST be set to 0 since this TLV is sent only in Initialization and Capability messages, which are not forwarded. The TLV Code Point is TBD. It needs to be assigned by IANA. The S-bit indicates whether the sender is advertising (S=1) or withdrawing (S=0) the capability. The "Capability Data" is encoded with the context identifier of the {primary PE, protector}. SB> where is the structure of {primary PE, protector} defined? 5.2. PW Label Distribution from Primary PE to Protector A primary PE SHOULD advertise a primary PW's label to a protector by sending a Label Mapping message. The message includes a Protection FEC Element TLV (see Section 5.4 for encoding), and an Upstream- Assigned Label TLV (RFC 6389) encoded with the PW's label. The combination of the Protection FEC Element TLV and the PW label represents the primary PE's forwarding state for the PW. The Label Mapping message SHOULD also carry an IPv4/v6 Interface_ID TLV (RFC Yimin Shen, et al. Expires January 25, 2015 [Page 20] Internet-Draft PW Endpoint Fast Failure Protection July 2014 6389, RFC 3471) encoded with the context identifier of the {primary PE, protector}. The protector that receives this Label Mapping message SHOULD install a forwarding entry for the PW label in the label space identified by the context identifier. The nexthop of the forwarding entry SHOULD ensure packets to be sent towards the target CE via a backup AC or a backup (S-)PE, depending on the protection scenario. The protector SHOULD silently discard a Label Mapping message if the included context identifier is unknown to it. 5.3. PW Label Distribution from Backup PE to Protector In the centralized protector model, a backup PE SHOULD advertise a backup PW's label to a protector by sending a Label Mapping message. The message includes a Protection FEC Element TLV and a Generic Label TLV encoded with the backup PW's label. This Protection FEC Element MUST be identical to the Protection FEC Element TLV that the primary PE advertises to the protector (Section 5.2). The context identifier SHOULD NOT be encoded in Interface_ID TLV in this message. The protector that receives this Label Mapping message SHOULD associate the backup PW with the primary PW, based on the common Protection FEC Element TLV. It SHOULD distinguish between the Label Mapping message from the primary PE and the Label Mapping message from the backup PE based on the respective presence and absence of context identifier in Interface_ID TLV. It SHOULD install a forwarding entry for the primary PW's label in the label space identified by the context identifier. The nexthop of the forwarding entry SHOULD indicate a label swap to the backup PW's label, followed by a label push or IP header push for a transport tunnel to the backup PE. 5.4. Protection FEC Element TLV The Protection FEC Element TLV has type 0x83. Its format is defined as below: Yimin Shen, et al. Expires January 25, 2015 [Page 21] Internet-Draft PW Endpoint Fast Failure Protection July 2014 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type(0x83) | Reserved | Encoding Type | Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | | | ~ PW Information ~ | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 12 - Encoding Type Type of format that PW Information field is encoded. - Length Length of PW Information field in octets. - PW Information Field of variable length that specifies a PW For Encoding Type, 1 is defined for the PWid FEC Element format, and 2 is defined for the Generalized PWid FEC Element format (RFC 4447). 5.4.1. Encoding Format for PWid Yimin Shen, et al. Expires January 25, 2015 [Page 22] Internet-Draft PW Endpoint Fast Failure Protection July 2014 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type(0x83) | Reserved | Enc Type(1) | Length(16) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Ingress PE Address | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Egress PE Address | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Group ID | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | PW ID | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |C| PW Type | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 13 - Ingress PE Address IP address of the ingress PE of PW. - Egress PE Address IP address of the egress PE of PW. SB> How does this work for IPv6? - Group ID An arbitrary 32-bit value that represents a group of PWs and that is used to create groups in the PW space. - PW ID A non-zero 32-bit connection ID that, together with the PW Type field, identifies a particular PW. - Control word bit (C) A bit that flags the presence of a control word on this PW. If C = 1, control word is present; If C = 0, control word is not present. - PW Type A 15-bit quantity that represents the type of PW. SB> Needs a ref Yimin Shen, et al. Expires January 25, 2015 [Page 23] Internet-Draft PW Endpoint Fast Failure Protection July 2014 5.4.2. Encoding Format for Generalized PWid 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type(0x83) | Reserved | Enc Type(2) | Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Ingress PE Address | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Egress PE Address | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |C| PW Type | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | AGI Type | Length | Value | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ~ AGI Value (contd.) ~ | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | AII Type | Length | Value | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ~ SAII Value (contd.) ~ | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | AII Type | Length | Value | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ~ TAII Value (contd.) ~ | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 14 - Ingress PE Address IP address of the ingress PE of PW. - Egress PE Address IP address of the egress PE of PW. SB> IPv6? - Control word bit (C) A bit that flags the presence of a control word on this PW. If C = 1, control word is present; If C = 0, control word is not present. - PW Type A 15-bit quantity that represents the type of PW. Yimin Shen, et al. Expires January 25, 2015 [Page 24] Internet-Draft PW Endpoint Fast Failure Protection July 2014 - AGI Type, Length, Value, AGI Value Attachment Group Identifier of PW. - SAII Type, Length, Value, SAII Value Source Attachment Individual Identifier of PW. - TAII Type, Length, Value, TAII Value Target Attachment Individual Identifier of PW. 6. Revertive Behavior Subsequent to local repair, there are three strategies for the network to restore traffic to a fully functional PW. o Global revertive mode If the ingress CE is multi-homed (Figure 1), it MAY switch the traffic to a backup AC which is bound to a backup PW. Alternatively, if the ingress PE hosts a backup PW (Figure 2), the ingress PE MAY switch the traffic to the backup PW. These procedures are referred to as global repair. Possible triggers of a global repair include PW status, OAM, and BFD. o Control plane revertive mode In egress PE node protection and S-PE node protection, it is possible that the failure is limited to the link between the PLR and the primary (S-)PE, whereas the primary (S-)PE is still up. In this case, the PLR or an upstream router along the transport tunnel MAY reroute the tunnel around the failed link via an alternative path. Thus, the transport tunnel can continue to be used to carry the PW traffic to the primary (S-)PE. This procedure is driven by control plane convergence, and is referred to as control plane repair. o Local revertive mode The PLR MAY move traffic back to the primary PW, after the failure is resolved. In egress AC protection, upon detecting that the primary AC is restored, the PLR MAY start forwarding traffic over the AC again. Likewise, in egress PE node protection and S-PE node protection, upon detecting that the primary PE is restored, the PLR MAY re-establish the primary transport tunnel through the primary PE, and move the traffic from the bypass tunnel back to Yimin Shen, et al. Expires January 25, 2015 [Page 25] Internet-Draft PW Endpoint Fast Failure Protection July 2014 the transport tunnel. These procedures are referred to as local reversion. The fast protection mechanism in this document SHOULD be used in tandem with the global revertive mode. Particularly in the case of egress (S-)PE failure, if the ingress PE or the protector loses communication with the (S-)PE for an extensive period of time, the LDP session between them may go down. Consequently, the ingress PE may bring down the primary PW, or the protector may remove the forwarding entry of the primary PW label. In either case, the service will be disrupted. In other words, although the fast protection can temporarily repair traffic, control plane state may eventually be timed out if the failure persists. Therefore, it is recommended that the global revertive mode SHOULD be set up in advance, so that traffic can be moved to a fully functional backup PW shortly after the local repair. The control plane revertive mode may always happen as part of the convergence of control plane protocols. However, it is only applicable to the specific scenarios described above. The local revertive mode is optional. In the circumstances where the failure is caused by resource flapping, local reversion MAY be dampened to limit potential disruptions. Local revertive mode MAY be disabled completely by configuration. 7. IANA Considerations This document defines the encoding of the Capability Parameter TLV for the new "Egress Protection Capability" in Section 5. This would require IANA to assign a TLV Code Point to it. This document defines a new LDP Protection FEC Element TLV in Section 5. IANA has assigned the type value 0x83 to it. SB> I am very confused about what explicit actions you are asking IANA to take. Are you saying that there are no IANA actions? 8. Security Considerations The security considerations discussed in RFC 5036, RFC 5331, RFC 3209, and RFC 4090 apply to this document. SB> Are there any PW security considerations that apply? SB> This is a new PW operational mode, so I am surprised that there are no new security considerations. An early security review might be useful. From nobody Tue Jul 29 08:51:03 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C44911A0B08 for ; Tue, 29 Jul 2014 08:51:02 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id mneWMIeu1SbA for ; Tue, 29 Jul 2014 08:51:01 -0700 (PDT) Received: from aer-iport-2.cisco.com (aer-iport-2.cisco.com [173.38.203.52]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 5604A1B2858 for ; Tue, 29 Jul 2014 08:48:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2248; q=dns/txt; s=iport; t=1406648885; x=1407858485; h=message-id:date:from:reply-to:mime-version:to:cc:subject: references:in-reply-to:content-transfer-encoding; bh=RWV5bmVMkHb7N47rJsrt29WO5BoQLwbARa6Ka0U7gf0=; b=HUAZ2bcCgq7zr4P1G8rppvoui8OO7+gXF00ljzkQjYZYla7S3bHCfgs6 57s2YII85TkB7gchF+wPQlHnrEAgEE8rmRX7xP8Vn27YApH6jwlvp4VdU fO4iBgwR4qrlCgo7twtSAzFd3EjJB9Vl5Rp9ntzkUOO/gilLJ9qeEOMdo I=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Av8EAKvA11OtJssW/2dsb2JhbABZg2BXy3CGKoEhAYEkd4QDAQEBBDIBBTYKAQwECxEDAQIBCRYECwkDAgECAT0IBgEMAQUCAQGIPg2uaZAsF457AQEcESIHBoREAQSbTJROggOBR2sBgQs X-IronPort-AV: E=Sophos;i="5.01,757,1400025600"; d="scan'208";a="125840959" Received: from aer-iport-nat.cisco.com (HELO aer-core-1.cisco.com) ([173.38.203.22]) by aer-iport-2.cisco.com with ESMTP; 29 Jul 2014 15:48:03 +0000 Received: from cisco.com (mrwint.cisco.com [64.103.70.36]) by aer-core-1.cisco.com (8.14.5/8.14.5) with ESMTP id s6TFm2UG021119 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 29 Jul 2014 15:48:03 GMT Received: from [IPv6:::1] (localhost [127.0.0.1]) by cisco.com (8.14.4+Sun/8.8.8) with ESMTP id s6TFm1ux006670; Tue, 29 Jul 2014 16:48:02 +0100 (BST) Message-ID: <53D7C230.3040404@cisco.com> Date: Tue, 29 Jul 2014 16:48:00 +0100 From: Stewart Bryant User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: Loa Andersson , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , Adrian Farrel References: <53BAA7BA.2060903@pi.nu> <53D775E8.7050902@pi.nu> In-Reply-To: <53D775E8.7050902@pi.nu> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/iIyEuWonTqd3h7-lemhm3AKFqr4 Cc: "draft-bryant-mpls-oam-udp-return@tools.ietf.org" Subject: Re: [mpls] Closed: Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: stbryant@cisco.com List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Jul 2014 15:51:02 -0000 Loa I submitted as draft-ietf-mpls-pm-udp-return See the review comment by Eric The content is about PM so Eric is correct. Stewart -------- Original Message -------- Subject: MPLS-RT review of draft-bryant-mpls-oam-udp-return Resent-Date: Wed, 4 Jun 2014 14:31:41 +0000 Resent-From: Resent-To: , , , , , , Date: Wed, 4 Jun 2014 14:31:09 +0000 From: Osborne, Eric To: Eric Gray , "zzhang@juniper.net" , "Aissaoui, Mustapha (Mustapha" , "mpls-chairs@tools.ietf.org" , "VIGOUREUX, MARTIN (MARTIN" , "draft-bryant-mpls-oam-udp-return@tools.ietf.org" Nit: the draft is ‘draft-bryant-mpls-oam-udp-return’ but the doc title suggests that ‘draft-bryan-mpls-pm-udp-return’ would make more sense. ========== On 29/07/2014 11:22, Loa Andersson wrote: > Working Group, > > This adoption poll has been closed; and we have a new working group > document. > > Can the authors please publish draft-ietf-mpls-oam-udp-return-00, > without any other changes than the version and date. > > /Loa > for the wg chairs > > On 2014-07-07 15:59, Loa Andersson wrote: >> Working Group, >> >> >> The authors of draft-bryant-mpls-oam-udp-return has informed us >> that the draft is ready to be polled to see if we have consensus >> to make it a working group document. >> >> This mail starts a two week adoption poll. >> >> We have not yet done the IPR poll, it will be done in parallel to the >> adoption poll. >> >> There are no IPR disclosed against this draft. >> >> Please send your comments to the mpls working group mailing list >> (mpls@ietf.org) >> >> This adoption poll ends Juli 21, 2014! >> >> /Loa >> for the mpls wg co-chairs >> > -- For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/index.html From nobody Tue Jul 29 09:11:58 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 451EF1B2863; Tue, 29 Jul 2014 09:11:47 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id WJm3G84SKSt1; Tue, 29 Jul 2014 09:11:40 -0700 (PDT) Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 5BB191B2939; Tue, 29 Jul 2014 09:11:38 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: i-d-announce@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 5.6.2.p2 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <20140729161138.27669.3810.idtracker@ietfa.amsl.com> Date: Tue, 29 Jul 2014 09:11:38 -0700 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/5AIGnpfI4rxsJxkJYafbJOsUKv8 Cc: mpls@ietf.org Subject: [mpls] I-D Action: draft-ietf-mpls-pm-udp-return-00.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Jul 2014 16:11:49 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF. Title : MPLS Performance Measurement UDP Return Path Authors : Stewart Bryant Siva Sivabalan Sagar Soni Filename : draft-ietf-mpls-pm-udp-return-00.txt Pages : 8 Date : 2014-07-29 Abstract: This document specifies the proceedure to be used by the Packet Loss and Delay Measurement for MPLS Networks protocol defined in RFC6374 when sending and processing MPLS performance management out-of-band responses for delay and loss measurements over an IP/UDP return path. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-pm-udp-return/ There's also a htmlized version available at: http://tools.ietf.org/html/draft-ietf-mpls-pm-udp-return-00 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Tue Jul 29 09:23:32 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6B1151B2863 for ; Tue, 29 Jul 2014 09:23:28 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Lr6l4TRlwTqo for ; Tue, 29 Jul 2014 09:23:18 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A9A621A0356 for ; Tue, 29 Jul 2014 09:23:15 -0700 (PDT) Received: from [192.168.1.133] (81-236-221-144-no93.tbcn.telia.com [81.236.221.144]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 379441802B9F; Tue, 29 Jul 2014 18:23:14 +0200 (CEST) Message-ID: <53D7CA7E.90000@pi.nu> Date: Tue, 29 Jul 2014 18:23:26 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: stbryant@cisco.com, "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , Adrian Farrel References: <53BAA7BA.2060903@pi.nu> <53D775E8.7050902@pi.nu> <53D7C230.3040404@cisco.com> In-Reply-To: <53D7C230.3040404@cisco.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/4wHp9eGdjnm2_WqiwZMfNrrQc-M Cc: "draft-bryant-mpls-oam-udp-return@tools.ietf.org" Subject: Re: [mpls] Closed: Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Jul 2014 16:23:28 -0000 Ack! /Loa On 2014-07-29 17:48, Stewart Bryant wrote: > Loa > > I submitted as draft-ietf-mpls-pm-udp-return > > See the review comment by Eric > > The content is about PM so Eric is correct. > > Stewart > > -------- Original Message -------- > Subject: MPLS-RT review of draft-bryant-mpls-oam-udp-return > Resent-Date: Wed, 4 Jun 2014 14:31:41 +0000 > Resent-From: > Resent-To: , , , > , , , > > Date: Wed, 4 Jun 2014 14:31:09 +0000 > From: Osborne, Eric > To: Eric Gray , "zzhang@juniper.net" > , "Aissaoui, Mustapha (Mustapha" > , "mpls-chairs@tools.ietf.org" > , "VIGOUREUX, MARTIN (MARTIN" > , > "draft-bryant-mpls-oam-udp-return@tools.ietf.org" > > > > > > Nit: the draft is ‘draft-bryant-mpls-oam-udp-return’ but the doc title > suggests that ‘draft-bryan-mpls-pm-udp-return’ would make more sense. > > > > ========== > > On 29/07/2014 11:22, Loa Andersson wrote: >> Working Group, >> >> This adoption poll has been closed; and we have a new working group >> document. >> >> Can the authors please publish draft-ietf-mpls-oam-udp-return-00, >> without any other changes than the version and date. >> >> /Loa >> for the wg chairs >> >> On 2014-07-07 15:59, Loa Andersson wrote: >>> Working Group, >>> >>> >>> The authors of draft-bryant-mpls-oam-udp-return has informed us >>> that the draft is ready to be polled to see if we have consensus >>> to make it a working group document. >>> >>> This mail starts a two week adoption poll. >>> >>> We have not yet done the IPR poll, it will be done in parallel to the >>> adoption poll. >>> >>> There are no IPR disclosed against this draft. >>> >>> Please send your comments to the mpls working group mailing list >>> (mpls@ietf.org) >>> >>> This adoption poll ends Juli 21, 2014! >>> >>> /Loa >>> for the mpls wg co-chairs >>> >> > > -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Tue Jul 29 09:51:42 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B6C641B29AE for ; Tue, 29 Jul 2014 09:51:40 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -101.901 X-Spam-Level: X-Spam-Status: No, score=-101.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id uapUd2VzKxpu for ; Tue, 29 Jul 2014 09:51:38 -0700 (PDT) Received: from usevmg20.ericsson.net (usevmg20.ericsson.net [198.24.6.45]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 048491A032A for ; Tue, 29 Jul 2014 09:51:37 -0700 (PDT) X-AuditID: c618062d-f79206d0000014d2-1b-53d77dd00505 Received: from EUSAAHC007.ericsson.se (Unknown_Domain [147.117.188.93]) by usevmg20.ericsson.net (Symantec Mail Security) with SMTP id 52.41.05330.0DD77D35; Tue, 29 Jul 2014 12:56:17 +0200 (CEST) Received: from EUSAAMB103.ericsson.se ([147.117.188.120]) by EUSAAHC007.ericsson.se ([147.117.188.93]) with mapi id 14.03.0174.001; Tue, 29 Jul 2014 12:51:21 -0400 From: Gregory Mirsky To: "stbryant@cisco.com" , Loa Andersson , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , Adrian Farrel Thread-Topic: [mpls] Closed: Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document Thread-Index: AQHPqxcDMr3iMZCTUEGr/fI5QHlSA5u3ddIA///Md5A= Date: Tue, 29 Jul 2014 16:51:20 +0000 Message-ID: <7347100B5761DC41A166AC17F22DF1121B7F64E3@eusaamb103.ericsson.se> References: <53BAA7BA.2060903@pi.nu> <53D775E8.7050902@pi.nu> <53D7C230.3040404@cisco.com> In-Reply-To: <53D7C230.3040404@cisco.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [147.117.188.9] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpjkeLIzCtJLcpLzFFi42KZXLonVvdi7fVgg7cnBSx+9Nxgtpj07Q2z xb+5c5gtvl9awmJxa+lKVotzT+cwOrB5TPm9kdVjyZKfTB4rNq9k9Jg1vY3N48vlz2wBrFFc NimpOZllqUX6dglcGetXdbIWdElWLDvxnrGBsVW0i5GTQ0LARGLtq/dsELaYxIV764FsLg4h gaOMEjt7XkE5yxklHjUtYwKpYhMwknixsYcdxBYROMsocaHJFsRmFsiUOLNoI1iDsEALo8S6 DUdZQRwRgVZGiStbWqA6rCT6jjewgtgsAqoSv8/MBYvzCvhKbJ0wGcwWEoiRmN26BMzmFNCU 2P3jLQuIzQh03/dTa5ggtolL3HoynwnibgGJJXvOM0PYohIvH/9jhbAVJfb1T2eHqNeRWLD7 ExuErS2xbOFrZoi9ghInZz5hmcAoNgvJ2FlIWmYhaZmFpGUBI8sqRo7S4tSy3HQjg02MwIg7 JsGmu4Nxz0vLQ4wCHIxKPLwJ4deChVgTy4orcw8xSnOwKInzzqqdFywkkJ5YkpqdmlqQWhRf VJqTWnyIkYmDU6qB0fenW5FzJ9PZ7w61dnJHzlVaPcjyluiQX72+Inyv3afn9ZNjLWcydX1g efHiY4Ki9f2z+3iuXuLzC1mnvejI4j2bW8863FBJaDJeylCwuTOac6uieYxhJje7w4F8yb7Q 9y1i6e1lKxXUZXxCrgptXPQ24q2h3hQ5NztrscWv0/6+OpR6bQK3EktxRqKhFnNRcSIAsTAY M5kCAAA= Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/fATFQlPCBkbIBZR_3WULuUBZeG4 Cc: "draft-bryant-mpls-oam-udp-return@tools.ietf.org" Subject: Re: [mpls] Closed: Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Jul 2014 16:51:40 -0000 Dear Stewart, et. al, I think that Performance Measurement includes a broader set of measurements= than Delay and Loss, e.g. Throughput, Available Bandwidth. I think that ch= aracterizing RFC 6374 and its extensions as the MPLS PM RFC is not entirely= accurate. These documents add to overall solution of the MPLS PM but do no= t address all its aspects. Regards, Greg -----Original Message----- From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Stewart Bryant Sent: Tuesday, July 29, 2014 8:48 AM To: Loa Andersson; mpls@ietf.org; mpls-chairs@tools.ietf.org; Adrian Farrel Cc: draft-bryant-mpls-oam-udp-return@tools.ietf.org Subject: Re: [mpls] Closed: Poll to see if we have support to make draft-br= yant-mpls-oam-udp-return an mpls working group document Loa I submitted as draft-ietf-mpls-pm-udp-return See the review comment by Eric The content is about PM so Eric is correct. Stewart -------- Original Message -------- Subject: MPLS-RT review of draft-bryant-mpls-oam-udp-return Resent-Date: Wed, 4 Jun 2014 14:31:41 +0000 Resent-From: Resent-To: , , , , , , Date: Wed, 4 Jun 2014 14:31:09 +0000 From: Osborne, Eric To: Eric Gray , "zzhang@juniper.net"=20 , "Aissaoui, Mustapha (Mustapha"=20 , "mpls-chairs@tools.ietf.org"=20 , "VIGOUREUX, MARTIN (MARTIN"=20 , "draft-bryant-mpls-oam-udp-return@tools.ietf.org"=20 Nit: the draft is 'draft-bryant-mpls-oam-udp-return' but the doc title sugg= ests that 'draft-bryan-mpls-pm-udp-return' would make more sense. =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D On 29/07/2014 11:22, Loa Andersson wrote: > Working Group, > > This adoption poll has been closed; and we have a new working group=20 > document. > > Can the authors please publish draft-ietf-mpls-oam-udp-return-00, > without any other changes than the version and date. > > /Loa > for the wg chairs > > On 2014-07-07 15:59, Loa Andersson wrote: >> Working Group, >> >> >> The authors of draft-bryant-mpls-oam-udp-return has informed us that=20 >> the draft is ready to be polled to see if we have consensus to make=20 >> it a working group document. >> >> This mail starts a two week adoption poll. >> >> We have not yet done the IPR poll, it will be done in parallel to the=20 >> adoption poll. >> >> There are no IPR disclosed against this draft. >> >> Please send your comments to the mpls working group mailing list >> (mpls@ietf.org) >> >> This adoption poll ends Juli 21, 2014! >> >> /Loa >> for the mpls wg co-chairs >> > -- For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/index.html _______________________________________________ mpls mailing list mpls@ietf.org https://www.ietf.org/mailman/listinfo/mpls From nobody Tue Jul 29 18:34:14 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7E15B1B2A34 for ; Tue, 29 Jul 2014 18:34:11 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.902 X-Spam-Level: X-Spam-Status: No, score=-1.902 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id NRisgvXr7MBk for ; Tue, 29 Jul 2014 18:34:08 -0700 (PDT) Received: from mgw010.noc.ntt.com (mgw010.noc.ntt.com [210.160.55.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2CB771A04B8 for ; Tue, 29 Jul 2014 18:34:07 -0700 (PDT) Received: from c0043i0.coe.ntt.com (c0043i0.nc.agilit-hosting.com [10.18.161.12]) by mgw010.noc.ntt.com (NTT Com MailSV) with ESMTP id 8AC6057A02BB; Wed, 30 Jul 2014 10:34:06 +0900 (JST) Received: from C0038I0.coe.ntt.com (10.18.160.42) by c0043i0.coe.ntt.com (10.18.161.12) with Microsoft SMTP Server (TLS) id 14.3.181.6; Wed, 30 Jul 2014 10:34:04 +0900 Received: from C0007I0.coe.ntt.com ([169.254.1.34]) by C0038I0.coe.ntt.com ([10.18.160.42]) with mapi id 14.03.0181.006; Wed, 30 Jul 2014 10:34:05 +0900 From: Yuji Kamite To: "Rakesh Gandhi (rgandhi)" , Loa Andersson , "mpls@ietf.org" Thread-Topic: IPR poll on draft-tsaad-mpls-p2mp-loose-path-reopt Thread-Index: AQHPqne0+/ykseKwqEuXDw7CP3d5yJu31wJw Date: Wed, 30 Jul 2014 01:34:04 +0000 Message-ID: <1A095D7ECD89A64C9D3C77AE2DDE660B58118D2A@C0007I0.coe.ntt.com> References: <53D41400.9030805@pi.nu> In-Reply-To: Accept-Language: ja-JP, en-US Content-Language: ja-JP X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ccmail-original-to: rgandhi@cisco.com, loa@pi.nu, mpls@ietf.org x-ccmail-original-cc: mpls-chairs@tools.ietf.org, draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org, tsaad@cisco.com, zali@cisco.com, robert.h.venator.civ@mail.mil x-originating-ip: [10.14.150.185] Content-Type: text/plain; charset="iso-2022-jp" MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/EdxeaoOUzC6tQ_q5W4bb7Hz17Q0 Cc: "draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org" , "Zafar Ali \(zali\)" , "mpls-chairs@tools.ietf.org" , "robert.h.venator.civ@mail.mil" Subject: Re: [mpls] IPR poll on draft-tsaad-mpls-p2mp-loose-path-reopt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Jul 2014 01:34:11 -0000 Hi Loa, I am not aware of any other IPRs for this draft. Best regards, -Yuji > -----Original Message----- > From: Rakesh Gandhi (rgandhi) [mailto:rgandhi@cisco.com] > Sent: Tuesday, July 29, 2014 12:22 AM > To: Loa Andersson; mpls@ietf.org > Cc: mpls-chairs@tools.ietf.org; > draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org; Tarek Saad > (tsaad); Zafar Ali (zali); robert.h.venator.civ@mail.mil; Yuji Kamite > $B!J>e Subject: Re: IPR poll on draft-tsaad-mpls-p2mp-loose-path-reopt > > Hi Loa, > > I am aware of one IPR and has been disclosed as follows. > > https://datatracker.ietf.org/ipr/2307/ > > Thanks, > Rakesh > > > On 2014-07-26 4:48 PM, "Loa Andersson" wrote: > > >Working Group, > > > >The authors of draft-tsaad-mpls-p2mp-loose-path-reopt have told us that > >the draft is ready to be accepted as a working group document. > > > >Before we do poll to see if we have consensus to accept the document as > >a working group document we want to do an IPR poll on the document. > > > >This mail starts that IPR poll. > > > >Are you aware of any IPR that applies to draft-tsaad-mpls-p2mp-loose- > >path-reopt? > > > >If so, has this IPR been disclosed in compliance with IETF IPR rules > >(see RFCs 3979, 4879, 3669 and 5378 for more details). > > > >Currently there are one IPR disclosures that relates to this document. > > > >If you are listed as a document author or contributor please respond to > >this email regardless of whether or not you are aware of any relevant > >IPR. *The response needs to be sent to the MPLS wg mailing list.* The > >document will not advance to the next stage until a response has been > >received from each author and contributor. > > > >If you are on the MPLS WG email list but are not listed as an author or > >contributor, then please explicitly respond only if you are aware of > >any IPR that has not yet been disclosed in conformance with IETF rules. > > > >Thanks, Loa > >(as MPLS WG co-chair) > >-- > > > > > >Loa Andersson email: loa@mail01.huawei.com > >Senior MPLS Expert loa@pi.nu > >Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Wed Jul 30 03:09:45 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 498451B294F for ; Wed, 30 Jul 2014 03:09:44 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id WWk9QQrGScp6 for ; Wed, 30 Jul 2014 03:09:42 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 60D141A02F1 for ; Wed, 30 Jul 2014 03:09:42 -0700 (PDT) Received: from [192.168.1.130] (81-236-221-144-no93.tbcn.telia.com [81.236.221.144]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id F0E1E18013DA; Wed, 30 Jul 2014 12:09:40 +0200 (CEST) Message-ID: <53D8C464.6040403@pi.nu> Date: Wed, 30 Jul 2014 12:09:40 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "VIGOUREUX, MARTIN (MARTIN)" , "draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org" Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/yz_O4Tflks6JAqdkDaWA5x3E0DE Subject: [mpls] poll to see if we have support to make draft-tsaad-mpls-p2mp-loose-path-reopt an mpls wg doc X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Jul 2014 10:09:44 -0000 Working Group, This is to start a two week poll on adopting draft-tsaad-mpls-p2mp-loose-path-reopt-03 as an MPLS working group document. Please send your comments (support/not support) to the mpls working group mailing list (mpls@ietf.org). Please give a technical motivation for your support/not support, especially if you think that the document should not be adopted as a working group document. There is one IPR claim against this document. The authors and contributors has stated on the working group mailing list that they are not aware of any other IPR claims against this draft. However if you are on the the mpls working group mailing list and aware of IPR that relates to this draft, the time to disclose this is now. This poll ends August 14, 2014. /Loa for the MPLS wg co-chairs -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Wed Jul 30 04:45:20 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6C7E51B279E for ; Wed, 30 Jul 2014 04:45:19 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id WZqYtUwiYn1G for ; Wed, 30 Jul 2014 04:45:17 -0700 (PDT) Received: from aer-iport-2.cisco.com (aer-iport-2.cisco.com [173.38.203.52]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 6CE571B278F for ; Wed, 30 Jul 2014 04:45:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3792; q=dns/txt; s=iport; t=1406720717; x=1407930317; h=message-id:date:from:reply-to:mime-version:to:cc:subject: references:in-reply-to:content-transfer-encoding; bh=hQNkZPYrb0RU6NRsBaSYoAXjFdfh3K9tn0ieH4ezh7g=; b=G0HVKqqGlsdI1PRJ3AjbgQLYYXfJw45i+RxpFEhFId2wC2u31FAnvbif wnOgoEB24Qwcw5nt/JVYpdowgRk8V42AuLQcR5oXjkag8+Ie4Tco5o/2h 62G/dqcO7Q/XgvbX2LbfGOSs+JJpYdNnPtkunLlgFRrVE2e74oS71sRUn k=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AuUEAA/a2FOtJssW/2dsb2JhbABZg2BXyzIKhiqBIQGBKHeEAwEBAQQBAQE1NgoBDAQLEQMBAQEBCRYEBAcJAwIBAgEVHwkIBgEMAQUCAQEXiCcNryKQaheOewEBHBEiBwaERAEEm2SUU4IDgUdrAYEL X-IronPort-AV: E=Sophos;i="5.01,763,1400025600"; d="scan'208";a="126690551" Received: from aer-iport-nat.cisco.com (HELO aer-core-4.cisco.com) ([173.38.203.22]) by aer-iport-2.cisco.com with ESMTP; 30 Jul 2014 11:45:15 +0000 Received: from cisco.com (mrwint.cisco.com [64.103.70.36]) by aer-core-4.cisco.com (8.14.5/8.14.5) with ESMTP id s6UBjEIH028175 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 30 Jul 2014 11:45:15 GMT Received: from [IPv6:::1] (localhost [127.0.0.1]) by cisco.com (8.14.4+Sun/8.8.8) with ESMTP id s6UBjDSU011462; Wed, 30 Jul 2014 12:45:13 +0100 (BST) Message-ID: <53D8DACA.2070207@cisco.com> Date: Wed, 30 Jul 2014 12:45:14 +0100 From: Stewart Bryant User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: Gregory Mirsky , Loa Andersson , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , Adrian Farrel References: <53BAA7BA.2060903@pi.nu> <53D775E8.7050902@pi.nu> <53D7C230.3040404@cisco.com> <7347100B5761DC41A166AC17F22DF1121B7F64E3@eusaamb103.ericsson.se> In-Reply-To: <7347100B5761DC41A166AC17F22DF1121B7F64E3@eusaamb103.ericsson.se> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/PFsJCjpN3g4HT-qHUWd6CWwgfUE Cc: "draft-bryant-mpls-oam-udp-return@tools.ietf.org" Subject: Re: [mpls] Closed: Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: stbryant@cisco.com List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Jul 2014 11:45:19 -0000 Greg, The new name was recommended during WG adoption and I am sure I said I would make the change. No one commented at the time. I am more than willing to change the draft name again if that is the consensus. However I would like to do so before making substantive changes to the text. I await the instructions of the chairs. Stewart On 29/07/2014 17:51, Gregory Mirsky wrote: > Dear Stewart, et. al, > I think that Performance Measurement includes a broader set of measurements than Delay and Loss, e.g. Throughput, Available Bandwidth. I think that characterizing RFC 6374 and its extensions as the MPLS PM RFC is not entirely accurate. These documents add to overall solution of the MPLS PM but do not address all its aspects. > > Regards, > Greg > > -----Original Message----- > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Stewart Bryant > Sent: Tuesday, July 29, 2014 8:48 AM > To: Loa Andersson; mpls@ietf.org; mpls-chairs@tools.ietf.org; Adrian Farrel > Cc: draft-bryant-mpls-oam-udp-return@tools.ietf.org > Subject: Re: [mpls] Closed: Poll to see if we have support to make draft-bryant-mpls-oam-udp-return an mpls working group document > > Loa > > I submitted as draft-ietf-mpls-pm-udp-return > > See the review comment by Eric > > The content is about PM so Eric is correct. > > Stewart > > -------- Original Message -------- > Subject: MPLS-RT review of draft-bryant-mpls-oam-udp-return > Resent-Date: Wed, 4 Jun 2014 14:31:41 +0000 > Resent-From: > Resent-To: , , , , , , > Date: Wed, 4 Jun 2014 14:31:09 +0000 > From: Osborne, Eric > To: Eric Gray , "zzhang@juniper.net" > , "Aissaoui, Mustapha (Mustapha" > , "mpls-chairs@tools.ietf.org" > , "VIGOUREUX, MARTIN (MARTIN" > , > "draft-bryant-mpls-oam-udp-return@tools.ietf.org" > > > > > > Nit: the draft is 'draft-bryant-mpls-oam-udp-return' but the doc title suggests that 'draft-bryan-mpls-pm-udp-return' would make more sense. > > > > ========== > > On 29/07/2014 11:22, Loa Andersson wrote: >> Working Group, >> >> This adoption poll has been closed; and we have a new working group >> document. >> >> Can the authors please publish draft-ietf-mpls-oam-udp-return-00, >> without any other changes than the version and date. >> >> /Loa >> for the wg chairs >> >> On 2014-07-07 15:59, Loa Andersson wrote: >>> Working Group, >>> >>> >>> The authors of draft-bryant-mpls-oam-udp-return has informed us that >>> the draft is ready to be polled to see if we have consensus to make >>> it a working group document. >>> >>> This mail starts a two week adoption poll. >>> >>> We have not yet done the IPR poll, it will be done in parallel to the >>> adoption poll. >>> >>> There are no IPR disclosed against this draft. >>> >>> Please send your comments to the mpls working group mailing list >>> (mpls@ietf.org) >>> >>> This adoption poll ends Juli 21, 2014! >>> >>> /Loa >>> for the mpls wg co-chairs >>> > > -- > For corporate legal information go to: > > http://www.cisco.com/web/about/doing_business/legal/cri/index.html > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > . > -- For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/index.html From nobody Wed Jul 30 05:54:32 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 595701A0023 for ; Wed, 30 Jul 2014 05:54:30 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 8aEAfN525Xnl for ; Wed, 30 Jul 2014 05:54:28 -0700 (PDT) Received: from alln-iport-1.cisco.com (alln-iport-1.cisco.com [173.37.142.88]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 5EF491A001E for ; Wed, 30 Jul 2014 05:54:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1995; q=dns/txt; s=iport; t=1406724868; x=1407934468; h=from:to:subject:date:message-id:in-reply-to:content-id: content-transfer-encoding:mime-version; bh=idV1ETi1F2aXrpBx0fdR/5ZD7WSZSosEbaj3NA6bqFU=; b=DCR1p9KcgIwie+YwxOnwJhBpxsJCNmRoBmPE5D8KzwNXDUMWjoR5jLE+ xQXsuet9EqucqjYOM5gNWsqU37gR6LX1YTFinFg0J+7Fu5HAMO0TKWPAX vAOEkmQrqdSfq6YqqZ1N4R8HmEeyyiypjlz8tqU9IQZffHceHdjnHk4wO c=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Ak8FAHrq2FOtJA2M/2dsb2JhbABZgw6BKQTRYoEhAYEPFneEAwEBAQRrAxcCBAEIEQMBAkoXHQgCBAESiELAIhcEjmYQAgFWBoREBZtklFOCA4FGbAEBgUM X-IronPort-AV: E=Sophos;i="5.01,764,1400025600"; d="scan'208";a="65102599" Received: from alln-core-7.cisco.com ([173.36.13.140]) by alln-iport-1.cisco.com with ESMTP; 30 Jul 2014 12:54:27 +0000 Received: from xhc-aln-x01.cisco.com (xhc-aln-x01.cisco.com [173.36.12.75]) by alln-core-7.cisco.com (8.14.5/8.14.5) with ESMTP id s6UCsRxA002623 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Wed, 30 Jul 2014 12:54:27 GMT Received: from xmb-rcd-x14.cisco.com ([169.254.4.221]) by xhc-aln-x01.cisco.com ([173.36.12.75]) with mapi id 14.03.0123.003; Wed, 30 Jul 2014 07:54:27 -0500 From: "Zafar Ali (zali)" To: Loa Andersson , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "VIGOUREUX, MARTIN (MARTIN)" , "draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org" Thread-Topic: poll to see if we have support to make draft-tsaad-mpls-p2mp-loose-path-reopt an mpls wg doc Thread-Index: AQHPq95qnL1UVcgUREOFi/flCTBh55u4pbeA Date: Wed, 30 Jul 2014 12:54:26 +0000 Message-ID: In-Reply-To: <53D8C464.6040403@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.2.3.120616 x-originating-ip: [10.86.246.247] Content-Type: text/plain; charset="Windows-1252" Content-ID: <9A753A6885E6F949AEA3473A838A1204@emea.cisco.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/CZui1hexj01CKi-lZpzzkdC-40w Subject: Re: [mpls] poll to see if we have support to make draft-tsaad-mpls-p2mp-loose-path-reopt an mpls wg doc X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Jul 2014 12:54:30 -0000 Support (as a co-author), Thanks Regards =8A Zafar -----Original Message----- From: Loa Andersson Date: Wednesday, July 30, 2014 6:09 AM To: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , Martin Vigoureux , "draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org" Subject: poll to see if we have support to make draft-tsaad-mpls-p2mp-loose-path-reopt an mpls wg doc Resent-From: Resent-To: , "robert.h.venator.civ@mail.mil" , , "y.kamite@ntt.com" , zali , , Loa Andersson , , Martin Vigoureux Resent-Date: Wednesday, July 30, 2014 6:09 AM >Working Group, > >This is to start a two week poll on adopting >draft-tsaad-mpls-p2mp-loose-path-reopt-03 as an MPLS working group >document. > >Please send your comments (support/not support) to the mpls working >group mailing list (mpls@ietf.org). Please give a technical >motivation for your support/not support, especially if you think that >the document should not be adopted as a working group document. > >There is one IPR claim against this document. > >The authors and contributors has stated on the working group mailing >list that they are not aware of any other IPR claims against this draft. > >However if you are on the the mpls working group mailing list and >aware of IPR that relates to this draft, the time to disclose >this is now. > >This poll ends August 14, 2014. > >/Loa > >for the MPLS wg co-chairs >--=20 > > >Loa Andersson email: loa@mail01.huawei.com >Senior MPLS Expert loa@pi.nu >Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Wed Jul 30 05:56:45 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E9AF41A0025 for ; Wed, 30 Jul 2014 05:56:43 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id HPOSug5uKBeL for ; Wed, 30 Jul 2014 05:56:42 -0700 (PDT) Received: from alln-iport-6.cisco.com (alln-iport-6.cisco.com [173.37.142.93]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 450E21A0027 for ; Wed, 30 Jul 2014 05:56:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1229; q=dns/txt; s=iport; t=1406725002; x=1407934602; h=from:to:cc:subject:date:message-id:in-reply-to: content-id:content-transfer-encoding:mime-version; bh=TV8s8sk6uuhTeZKimgKSMpRxntL60Q8T6hellN418LQ=; b=bXVBRi/q3FxzloKDsD1vNRKgMcDCnI+poxtpH5sH/sawYM7/qAA/3OHw LQLjKIaM2sK5odSt9LyzvYIagojWxiXOxtMl50z1PpB85aO7XOyzs1ewE DO7IJATBPp9WSWX7ngGIv9yVrH7aJtgTkhiDBcJVChB9gXSvprdDuySrC g=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Ak4FAHrq2FOtJV2Y/2dsb2JhbABZgw6BKQTRYoEhAYEPFneEBAIEOjEDCw4EAQg2KxclAgQBDQWIQsAiFwSOZhEBUAeESgEEm2SUU4IDgUZsgQw5 X-IronPort-AV: E=Sophos;i="5.01,764,1400025600"; d="scan'208";a="65149279" Received: from rcdn-core-1.cisco.com ([173.37.93.152]) by alln-iport-6.cisco.com with ESMTP; 30 Jul 2014 12:56:41 +0000 Received: from xhc-aln-x10.cisco.com (xhc-aln-x10.cisco.com [173.36.12.84]) by rcdn-core-1.cisco.com (8.14.5/8.14.5) with ESMTP id s6UCuf0n000630 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Wed, 30 Jul 2014 12:56:41 GMT Received: from xmb-aln-x07.cisco.com ([169.254.2.47]) by xhc-aln-x10.cisco.com ([173.36.12.84]) with mapi id 14.03.0123.003; Wed, 30 Jul 2014 07:56:41 -0500 From: "Rakesh Gandhi (rgandhi)" To: Loa Andersson , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "VIGOUREUX, MARTIN (MARTIN)" , "draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org" Thread-Topic: poll to see if we have support to make draft-tsaad-mpls-p2mp-loose-path-reopt an mpls wg doc Thread-Index: AQHPq95qpcS9d3xXQEOPndVqySylAZu4pGoA Date: Wed, 30 Jul 2014 12:56:40 +0000 Message-ID: In-Reply-To: <53D8C464.6040403@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.3.5.130515 x-originating-ip: [10.86.243.218] Content-Type: text/plain; charset="us-ascii" Content-ID: <79DED8AE6745E44EA1028843D4032CBA@emea.cisco.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/g40hOPhhCCEcamZOSyevGwAVmw0 Cc: "Zafar Ali \(zali\)" , "robert.h.venator.civ@mail.mil" Subject: Re: [mpls] poll to see if we have support to make draft-tsaad-mpls-p2mp-loose-path-reopt an mpls wg doc X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Jul 2014 12:56:44 -0000 Hi WG, Support (as co-author). We have implemented this draft in a released software. Thanks, Rakesh On 2014-07-30 6:09 AM, "Loa Andersson" wrote: >Working Group, > >This is to start a two week poll on adopting >draft-tsaad-mpls-p2mp-loose-path-reopt-03 as an MPLS working group >document. > >Please send your comments (support/not support) to the mpls working >group mailing list (mpls@ietf.org). Please give a technical >motivation for your support/not support, especially if you think that >the document should not be adopted as a working group document. > >There is one IPR claim against this document. > >The authors and contributors has stated on the working group mailing >list that they are not aware of any other IPR claims against this draft. > >However if you are on the the mpls working group mailing list and >aware of IPR that relates to this draft, the time to disclose >this is now. > >This poll ends August 14, 2014. > >/Loa > >for the MPLS wg co-chairs >--=20 > > >Loa Andersson email: loa@mail01.huawei.com >Senior MPLS Expert loa@pi.nu >Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Wed Jul 30 06:04:40 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id CB8741A0025 for ; Wed, 30 Jul 2014 06:04:33 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id kLNtVaNGHlAZ for ; Wed, 30 Jul 2014 06:04:28 -0700 (PDT) Received: from rcdn-iport-4.cisco.com (rcdn-iport-4.cisco.com [173.37.86.75]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 7C9591A0033 for ; Wed, 30 Jul 2014 06:04:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2112; q=dns/txt; s=iport; t=1406725468; x=1407935068; h=from:to:subject:date:message-id:references:in-reply-to: content-transfer-encoding:mime-version; bh=MCeuVyKYdZkBoiWvqLSSfp5oz1uN/aWs4e4iwD84GJ4=; b=lYHiS1tPqgREQhgD9jE2a+SKhglo0BOyUaK+F8RdUhUI6P4GqShu65E4 fjx1OpYPhWhkXGPgCjvKquA/S8O+5FGK+3ME5vPLmQdHsMZ3eFN6mMNq2 F2Dh3oEeYDECxzk8iLI4tbhjR+QlJ1g1CJHT2jH/phHpdOPAy6QeuLlZb Y=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AlMFANPs2FOtJV2T/2dsb2JhbABZgw5SVwTLLgqGKoEhAYEPFneEAwEBAQQBAQE3MQMXAgICAQgRAwECCxQQGwwLHQgCBAESCIg6DcAZEwQEjmYQAgEeOAaDKYEbBY5loVKCA4FGbAEBgUM X-IronPort-AV: E=Sophos;i="5.01,764,1400025600"; d="scan'208";a="343935888" Received: from rcdn-core-11.cisco.com ([173.37.93.147]) by rcdn-iport-4.cisco.com with ESMTP; 30 Jul 2014 13:04:27 +0000 Received: from xhc-rcd-x13.cisco.com (xhc-rcd-x13.cisco.com [173.37.183.87]) by rcdn-core-11.cisco.com (8.14.5/8.14.5) with ESMTP id s6UD4RlK022472 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Wed, 30 Jul 2014 13:04:27 GMT Received: from xmb-rcd-x13.cisco.com ([169.254.3.17]) by xhc-rcd-x13.cisco.com ([173.37.183.87]) with mapi id 14.03.0123.003; Wed, 30 Jul 2014 08:04:27 -0500 From: "Siva Sivabalan (msiva)" To: Loa Andersson , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "VIGOUREUX, MARTIN (MARTIN)" , "draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org" Thread-Topic: poll to see if we have support to make draft-tsaad-mpls-p2mp-loose-path-reopt an mpls wg doc Thread-Index: AQHPq/VVo9sV92ctdkelv7jLK0UQkZu4lV1g Date: Wed, 30 Jul 2014 13:04:27 +0000 Message-ID: References: <53D8C464.6040403@pi.nu> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [161.44.212.71] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/eCYQbI4Nu6RNrMMldVAy_QnAChU Subject: Re: [mpls] poll to see if we have support to make draft-tsaad-mpls-p2mp-loose-path-reopt an mpls wg doc X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Jul 2014 13:04:34 -0000 Support. Thanks, Siva -----Original Message----- From: Loa Andersson Date: Wednesday, July 30, 2014 6:09 AM To: "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , Martin Vigoureux , "draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org" Subject: poll to see if we have support to make draft-tsaad-mpls-p2mp-loose= -path-reopt an mpls wg doc Resent-From: Resent-To: , "robert.h.venator.civ@mail.mil" , , "y.kamite@ntt.com" , zali , , Loa Anderss= on , , Martin Vigoureux Resent-Date: Wednesday, July 30, 2014 6:09 AM >Working Group, > >This is to start a two week poll on adopting >draft-tsaad-mpls-p2mp-loose-path-reopt-03 as an MPLS working group=20 >document. > >Please send your comments (support/not support) to the mpls working=20 >group mailing list (mpls@ietf.org). Please give a technical motivation=20 >for your support/not support, especially if you think that the document=20 >should not be adopted as a working group document. > >There is one IPR claim against this document. > >The authors and contributors has stated on the working group mailing=20 >list that they are not aware of any other IPR claims against this draft. > >However if you are on the the mpls working group mailing list and aware=20 >of IPR that relates to this draft, the time to disclose this is now. > >This poll ends August 14, 2014. > >/Loa > >for the MPLS wg co-chairs >-- > > >Loa Andersson email: loa@mail01.huawei.com >Senior MPLS Expert loa@pi.nu >Huawei Technologies (consultant) phone: +46 739 81 21 64 _______________________________________________ mpls mailing list mpls@ietf.org https://www.ietf.org/mailman/listinfo/mpls From nobody Wed Jul 30 07:14:32 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A559C1A00A5 for ; Wed, 30 Jul 2014 07:14:17 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id RVqPRaUZdPoP for ; Wed, 30 Jul 2014 07:14:13 -0700 (PDT) Received: from ucol19pa13.eemsg.mail.mil (ucol19pa13.eemsg.mail.mil [214.24.24.86]) by ietfa.amsl.com (Postfix) with ESMTP id 449831A00A3 for ; Wed, 30 Jul 2014 07:14:13 -0700 (PDT) X-EEMSG-Attachment-filename: smime.p7s Received: from edge-mech01.mail.mil ([214.21.130.103]) by ucol19pa13.eemsg.mail.mil with ESMTP; 30 Jul 2014 14:14:12 +0000 Received: from UMECHPAOO.easf.csd.disa.mil (214.21.130.42) by edge-mech01.mail.mil (214.21.130.103) with Microsoft SMTP Server (TLS) id 14.3.174.1; Wed, 30 Jul 2014 14:13:48 +0000 Received: from UMECHPANZ.easf.csd.disa.mil ([169.254.2.94]) by umechpaoo.easf.csd.disa.mil ([214.21.130.42]) with mapi id 14.03.0174.001; Wed, 30 Jul 2014 14:13:47 +0000 From: "Venator, Robert H III CIV DISA NS (US)" To: Loa Andersson , "mpls@ietf.org" Thread-Topic: IPR poll on draft-tsaad-mpls-p2mp-loose-path-reopt Thread-Index: AQHPqRLkkNK1G+h+FkGy2I1HaPLL+Ju4rn2w Date: Wed, 30 Jul 2014 14:13:47 +0000 Message-ID: References: <53D41400.9030805@pi.nu> In-Reply-To: <53D41400.9030805@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: yes X-MS-TNEF-Correlator: x-originating-ip: [214.21.44.12] Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=SHA1; boundary="----=_NextPart_000_00B1_01CFABDE.F1DC4DB0" MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/o07PKfXQtL1p2Q84FznsJqN6y0s Cc: "draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org" , "mpls-chairs@tools.ietf.org" Subject: Re: [mpls] IPR poll on draft-tsaad-mpls-p2mp-loose-path-reopt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Jul 2014 14:14:17 -0000 ------=_NextPart_000_00B1_01CFABDE.F1DC4DB0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I Support this draft (as co-author) Robert -----Original Message----- From: Loa Andersson [mailto:loa@pi.nu] Sent: Saturday, July 26, 2014 4:48 PM To: mpls@ietf.org Cc: mpls-chairs@tools.ietf.org; draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org Subject: IPR poll on draft-tsaad-mpls-p2mp-loose-path-reopt Working Group, The authors of draft-tsaad-mpls-p2mp-loose-path-reopt have told us that the draft is ready to be accepted as a working group document. Before we do poll to see if we have consensus to accept the document as a working group document we want to do an IPR poll on the document. This mail starts that IPR poll. Are you aware of any IPR that applies to draft-tsaad-mpls-p2mp-loose- path-reopt? If so, has this IPR been disclosed in compliance with IETF IPR rules (see RFCs 3979, 4879, 3669 and 5378 for more details). Currently there are one IPR disclosures that relates to this document. If you are listed as a document author or contributor please respond to this email regardless of whether or not you are aware of any relevant IPR. *The response needs to be sent to the MPLS wg mailing list.* The document will not advance to the next stage until a response has been received from each author and contributor. If you are on the MPLS WG email list but are not listed as an author or contributor, then please explicitly respond only if you are aware of any IPR that has not yet been disclosed in conformance with IETF rules. Thanks, Loa (as MPLS WG co-chair) -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 ------=_NextPart_000_00B1_01CFABDE.F1DC4DB0 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIISjTCCA3Aw ggJYoAMCAQICAQUwDQYJKoZIhvcNAQEFBQAwWzELMAkGA1UEBhMCVVMxGDAWBgNVBAoTD1UuUy4g R292ZXJubWVudDEMMAoGA1UECxMDRG9EMQwwCgYDVQQLEwNQS0kxFjAUBgNVBAMTDURvRCBSb290 IENBIDIwHhcNMDQxMjEzMTUwMDEwWhcNMjkxMjA1MTUwMDEwWjBbMQswCQYDVQQGEwJVUzEYMBYG A1UEChMPVS5TLiBHb3Zlcm5tZW50MQwwCgYDVQQLEwNEb0QxDDAKBgNVBAsTA1BLSTEWMBQGA1UE AxMNRG9EIFJvb3QgQ0EgMjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMAswfaNO6z/ PzzWcb64dCIH7HBBFfyrQOMHqsHD2J/+2kw6vz/I2Ch7SzYBwKxFJcPSDgqPhRhkED0aE3Aqb47X 3I2Ts0EPOCHNravCPSoF01cRNw3NjFH5k+PMRkkhjhS0zcsUPjjNcjHuqxLyZeo0LlZd/+5jdctt 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AA== ------=_NextPart_000_00B1_01CFABDE.F1DC4DB0-- From nobody Wed Jul 30 07:23:39 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E7CB41A00DD; Wed, 30 Jul 2014 07:23:29 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id FxFsWGHlfrBo; Wed, 30 Jul 2014 07:23:12 -0700 (PDT) Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 2E2881A00A6; Wed, 30 Jul 2014 07:23:11 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: i-d-announce@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 5.6.2.p2 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <20140730142311.10096.13245.idtracker@ietfa.amsl.com> Date: Wed, 30 Jul 2014 07:23:11 -0700 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/DTsBgpMoQHgJppq0tMuxvsvZW5s Cc: mpls@ietf.org Subject: [mpls] I-D Action: draft-ietf-mpls-lsp-ping-relay-reply-04.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Jul 2014 14:23:31 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF. Title : Relayed Echo Reply mechanism for LSP Ping Authors : Jian Luo Lizhong Jin Thomas Nadeau George Swallow Filename : draft-ietf-mpls-lsp-ping-relay-reply-04.txt Pages : 15 Date : 2014-07-30 Abstract: In some inter autonomous system (AS) and inter-area deployment scenarios for RFC 4379 "Label Switched Path (LSP) Ping and Traceroute", a replying LSR may not have the available route to the initiator, and the Echo Reply message sent to the initiator would be discarded resulting in false negatives or complete failure of operation of LSP Ping and Traceroute. This document describes extensions to LSP Ping mechanism to enable the replying Label Switching Router (LSR) to have the capability to relay the Echo Response by a set of routable intermediate nodes to the initiator. This document updates RFC 4379. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-lsp-ping-relay-reply/ There's also a htmlized version available at: http://tools.ietf.org/html/draft-ietf-mpls-lsp-ping-relay-reply-04 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-lsp-ping-relay-reply-04 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Wed Jul 30 07:24:52 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 41DE51A009E for ; Wed, 30 Jul 2014 07:24:44 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ej9FxY5A9eCh for ; Wed, 30 Jul 2014 07:24:41 -0700 (PDT) Received: from alln-iport-3.cisco.com (alln-iport-3.cisco.com [173.37.142.90]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D2AB31A0039 for ; Wed, 30 Jul 2014 07:24:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1295; q=dns/txt; s=iport; t=1406730280; x=1407939880; h=from:to:subject:date:message-id:references:in-reply-to: content-id:content-transfer-encoding:mime-version; bh=zP1nhxlLm4KT7aDeFBSaWpQUGAD6bwjfaEqG+3ZGtoE=; b=LmZsVprVtg95kDJh46wijbzg0UXJsAvg38EhoT4FBYlOJ5sbPqBh1E39 ibwGlIz0IoMYQX0ST8Xgpgu1tt5yodlu7oZLYlV7pPy2AwKgRJ8WRiOBb sOzZTvod327LwrekD9KlNAzaP4rQoDnRYuDVsfI6voTpCGy2/upfFCi0R c=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AlIFAJb/2FOtJA2K/2dsb2JhbABagw5SVwTLLgqGKoEhAYEOFneEBAEBBAEBATcxAxkCAgEINgULGwwLJQIEARKIQg3ANxMEBI5mEQFXhEoFm2SUU4IDgUZsgQw5 X-IronPort-AV: E=Sophos;i="5.01,764,1400025600"; d="scan'208";a="65174816" Received: from alln-core-5.cisco.com ([173.36.13.138]) by alln-iport-3.cisco.com with ESMTP; 30 Jul 2014 14:24:40 +0000 Received: from xhc-aln-x09.cisco.com (xhc-aln-x09.cisco.com [173.36.12.83]) by alln-core-5.cisco.com (8.14.5/8.14.5) with ESMTP id s6UEOeVu016829 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Wed, 30 Jul 2014 14:24:40 GMT Received: from xmb-aln-x03.cisco.com ([169.254.6.216]) by xhc-aln-x09.cisco.com ([173.36.12.83]) with mapi id 14.03.0123.003; Wed, 30 Jul 2014 09:24:39 -0500 From: "Kamran Raza (skraza)" To: Loa Andersson , "mpls@ietf.org" , "mpls-chairs@tools.ietf.org" , "VIGOUREUX, MARTIN (MARTIN)" , "draft-tsaad-mpls-p2mp-loose-path-reopt@tools.ietf.org" Thread-Topic: [mpls] poll to see if we have support to make draft-tsaad-mpls-p2mp-loose-path-reopt an mpls wg doc Thread-Index: AQHPq95quFfazk395k6C3kjIjM44bZu4vP2A Date: Wed, 30 Jul 2014 14:24:38 +0000 Message-ID: References: <53D8C464.6040403@pi.nu> In-Reply-To: <53D8C464.6040403@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.4.2.140509 x-originating-ip: [161.44.213.21] Content-Type: text/plain; charset="us-ascii" Content-ID: <4FD4AC4F61674543A42F64509F06D354@emea.cisco.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/7wbUSktd_WcBpSh952fyk1LchbQ Subject: Re: [mpls] poll to see if we have support to make draft-tsaad-mpls-p2mp-loose-path-reopt an mpls wg doc X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Jul 2014 14:24:44 -0000 Support. -- Kamran Raza skraza@cisco.com On 2014-07-30, 6:09 AM, "Loa Andersson" wrote: >Working Group, > >This is to start a two week poll on adopting >draft-tsaad-mpls-p2mp-loose-path-reopt-03 as an MPLS working group >document. > >Please send your comments (support/not support) to the mpls working >group mailing list (mpls@ietf.org). Please give a technical >motivation for your support/not support, especially if you think that >the document should not be adopted as a working group document. > >There is one IPR claim against this document. > >The authors and contributors has stated on the working group mailing >list that they are not aware of any other IPR claims against this draft. > >However if you are on the the mpls working group mailing list and >aware of IPR that relates to this draft, the time to disclose >this is now. > >This poll ends August 14, 2014. > >/Loa > >for the MPLS wg co-chairs >--=20 > > >Loa Andersson email: loa@mail01.huawei.com >Senior MPLS Expert loa@pi.nu >Huawei Technologies (consultant) phone: +46 739 81 21 64 > >_______________________________________________ >mpls mailing list >mpls@ietf.org >https://www.ietf.org/mailman/listinfo/mpls From nobody Wed Jul 30 10:30:01 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1162E1A0334; Wed, 30 Jul 2014 10:29:56 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id g6YiKvMZnnfh; Wed, 30 Jul 2014 10:29:54 -0700 (PDT) Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 6B12B1A0183; Wed, 30 Jul 2014 10:29:54 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: i-d-announce@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 5.6.2.p2 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <20140730172954.30325.29161.idtracker@ietfa.amsl.com> Date: Wed, 30 Jul 2014 10:29:54 -0700 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/PV1JJr7bkKcSn_7ii3HGDEZRQ_c Cc: mpls@ietf.org Subject: [mpls] I-D Action: draft-ietf-mpls-lsp-ping-ttl-tlv-08.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Jul 2014 17:29:56 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF. Title : Definition of Time-to-Live TLV for LSP-Ping Mechanisms Authors : Sami Boutros Siva Sivabalan George Swallow Shaleen Saxena Vishwas Manral Sam Aldrin Filename : draft-ietf-mpls-lsp-ping-ttl-tlv-08.txt Pages : 8 Date : 2014-07-30 Abstract: LSP-Ping is a widely deployed Operation, Administration, and Maintenance (OAM) mechanism in MPLS networks. However, in the present form, this mechanism is inadequate to verify connectivity of a segment of a Multi-Segment PseudoWire (MS-PW) and/or bidirectional co-routed LSP from any node on the path of the MS-PW and/or bidirectional co-routed LSP. This document defines a TLV to address this shortcoming. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-mpls-lsp-ping-ttl-tlv/ There's also a htmlized version available at: http://tools.ietf.org/html/draft-ietf-mpls-lsp-ping-ttl-tlv-08 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-lsp-ping-ttl-tlv-08 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Wed Jul 30 12:08:07 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D1A251A0397; Wed, 30 Jul 2014 12:08:05 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.602 X-Spam-Level: X-Spam-Status: No, score=-2.602 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id LNPhve0D48yt; Wed, 30 Jul 2014 12:07:58 -0700 (PDT) Received: from na01-bl2-obe.outbound.protection.outlook.com (mail-bl2lp0204.outbound.protection.outlook.com [207.46.163.204]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 4C3DF1A0340; Wed, 30 Jul 2014 12:07:57 -0700 (PDT) Received: from BY2PR05MB728.namprd05.prod.outlook.com (10.141.223.25) by BY2PR05MB727.namprd05.prod.outlook.com (10.141.223.23) with Microsoft SMTP Server (TLS) id 15.0.995.14; Wed, 30 Jul 2014 19:07:48 +0000 Received: from BY2PR05MB728.namprd05.prod.outlook.com ([10.141.223.25]) by BY2PR05MB728.namprd05.prod.outlook.com ([10.141.223.25]) with mapi id 15.00.0995.014; Wed, 30 Jul 2014 19:07:48 +0000 From: Yimin Shen To: "stbryant@cisco.com" , pwe3 , "pwe3-chairs@tools.ietf.org" Thread-Topic: [PWE3] WG Last Call for draft-ietf-pwe3-endpoint-fast-protection-01 Thread-Index: AQHPqzzbzRsIO8QlbkK+kbMBZ9MDf5u4teQw Date: Wed, 30 Jul 2014 19:07:46 +0000 Message-ID: References: <53D7B569.60400@cisco.com> In-Reply-To: <53D7B569.60400@cisco.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [66.129.241.10] x-microsoft-antispam: BCL:0;PCL:0;RULEID: x-forefront-prvs: 0288CD37D9 x-forefront-antispam-report: SFV:NSPM; SFS:(6009001)(37854004)(13464003)(189002)(199002)(377454003)(164054003)(21056001)(54356999)(50986999)(106356001)(19580405001)(92566001)(83072002)(85852003)(101416001)(85306003)(99286002)(106116001)(76576001)(107046002)(77982001)(79102001)(74316001)(2656002)(83322001)(46102001)(76482001)(4396001)(81542001)(74502001)(15975445006)(95666004)(81342001)(64706001)(76176999)(66066001)(87936001)(86362001)(19580395003)(31966008)(33646002)(99396002)(20776003)(80022001)(74662001)(24736002)(108616003)(579004)(559001); DIR:OUT; SFP:; SCL:1; SRVR:BY2PR05MB727; H:BY2PR05MB728.namprd05.prod.outlook.com; FPR:; MLV:sfv; PTR:InfoNoRecords; MX:1; LANG:en; Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: juniper.net Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/wYCf5yQQQgetfOG0PASUfMNOG6M Cc: "mpls@ietf.org" Subject: Re: [mpls] [PWE3] WG Last Call for draft-ietf-pwe3-endpoint-fast-protection-01 X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Jul 2014 19:08:06 -0000 Hi Stewart, Thanks very much for the detailed review and comments. I'd like to highligh= t a few things below about this draft, and then respond to your comments in= line. Hope you could give the draft another closer look. [1] This draft is completely based on the PWE3 and the MS-PW architecture. = It is also based on RFC 5331 " MPLS Upstream Label Assignment and Context-S= pecific Label Space". So ideally readers should be familiar with that RFC. [2] The draft mentions two important roles of routers, PLR (point of local = repair) and protector.=20 [3] PLR performs local repair in dataplane, based on pre-installed backup f= orwarding state pointing to a bypass tunnel. There is no control-plane invo= lvement in local repair. This is similar to the existing IP/MPLS fast-rerou= te mechanisms. Therefore, it can achieve restore traffic with a similar per= formance to those mechanisms. That is the main goal of this draft. [4] When doing local repair, the PLR only swaps the top label (i.e. tunnel = label) to a bypass tunnel's label, and keeps the PW label (allocated by pri= mary/protected PE) intact. The PLR doesn't need to know or understand the P= W label. [5] The protector is the router at the other end of the bypass tunnel. It i= s responsible for forwarding the traffic further, so that the traffic can e= ventually reach the target CE. The protector must understand the PW label a= llocated by the primary PE. This is achieved by using the context label for= warding paradigm specified in RFC 5331. This draft defines some LDP extensi= ons to allow the primary PE to advertise PW labels to the protector. The pr= otector locally maintains a label space for these PW labels of the protecte= d PE, and looks up the PW label in this label space. The bypass tunnel serv= es as the pointer to this label space. [6] This draft also introduces the concept of "context ID". A context ID is= an IP address identifying a pair of . It serves a= s the destination of transport tunnel. PWs carried by the tunnel will be re= directed to the protector X during local repair. PWs to the same primary PE= but protected by a different protector Y cannot be carried by this tunnel.= Rather, they must be carried by a tunnel destined for context ID of . [7] A PLR may be any router in the network, including P or PE router. The d= raft assumes that it doesn't know or care about PW info. [8] A protector is a PE router in the "co-located" model. It may be a P rou= ter in the "centralized" model. For the later case, the draft describes how= to use the new LDP extensions for the protector to learn and assoicate pri= mary PW and backup PW and install forwarding entries in the context label t= able. Thanks, /Yimin -----Original Message----- From: pwe3 [mailto:pwe3-bounces@ietf.org] On Behalf Of Stewart Bryant Sent: Tuesday, July 29, 2014 10:53 AM To: pwe3; pwe3-chairs@tools.ietf.org Cc: mpls@ietf.org Subject: Re: [PWE3] WG Last Call for draft-ietf-pwe3-endpoint-fast-protecti= on-01 I do not support the publication of this draft without: 1) An assurance that MPLS WG has reviewed it and is happy with the extensions that seem to be made to the MPLS architecture 2) A formal description of those extensions or a pointer to those extensions in another RFC. 3) Significant clarification of how the detail of this mechanism works. For this to work you need to have co-ordinated label spaces in multiple PEs which is something that was investigated by the SPRING WG and found not to work, particularly when different manufacturers equipments were involved. [yshen] This draft does not rely on label space coordination. Rather, it is= based on context label forwarding paradigm specified in RFC 5331.=20 As far as I can see you also need to peek below the top of stack to do a fast reroute operation which is not a currently defined MPLS operation. There seem to be a lot of details and clarifications missing that need to be provided, and I am not entirely convinced that all of the items declared out of scope are legitimately out of scope and not needed in order for a multi-vendor solution to be implemented. It would be useful to me (and I suspect to other readers) to see what the dataplane looks like at various points in the normal and repair path to verify that all parties have the right information for this to work under normal and various fault conditions. I have a number of comments inline that need to be addressed before this can proceed. - Stewart PW Endpoint Fast Failure Protection draft-ietf-pwe3-endpoint-fast-protection-01 Abstract This document specifies a fast mechanism for protecting pseudowires against egress endpoint failures, including egress attachment circuit failure, egress PE failure, multi-segment PW terminating PE failure, and multi-segment PW switching PE failure. Designed on the basis of multi-homed CE, PW redundancy, upstream label assignment and context specific label switching, the mechanism enables local repair to be performed by the router upstream adjacent to a failure. In particular, the router can restore PW traffic in the order of tens of milliseconds, SB> Not sure it's wise to specify a performance claim in a standards SB> track RFC. [yshen] If this is viewed as inappropriate, we can remove it. by transmitting the traffic to a protector through a pre-established bypass tunnel. Therefore, the mechanism can reduce traffic loss before global repair reacts to the failure and the network converges on the topology changes due to the failure. =3D=3D=3D 1. Introduction Per RFC 3985, RFC 4447 and RFC 5659, a pseudowire (PW) or PW segment can be thought of as a connection between a pair of forwarders hosted by two PEs, carrying an emulated layer-2 service over a packet switched network (PSN). In the single-segment PW (SS-PW) case, a forwarder binds a PW to an attachment circuit (AC). In the multi- segment PW (MS-PW) case, a forwarder on a terminating PE (T-PE) binds a PW segment to an AC, while a forwarder on a switching PE (S-PE) binds one PW segment to another PW segment. In each direction between the PEs, PW packets are transported by a PSN tunnel, which is called a transport tunnel. SB> Did we ever your the term transport tunnel before? [yshen] This is mainly for clarity. We could change it to " which is called a transport tunnel *in this document*". Or we can completely rep= lace "transport tunnel" with just "tunnel". 3. Reference Models and Failure Cases The mechanism in this document intends to use these topologies for local repair purposes. SB> The toplology is not a mechanism. Are you saying that the mechanims SB> only works in this topology? [yshen] No, these topologies are only examples for use by subsequent sectio= ns to describe the mechanisms. The mechanisms should equally work for other= topologies as well. This SHALL enable local repair and global repair to work in tandem to achieve broader coverage of protection for services. SB> I have no idea how a SHALL in capitals applies here. [yshen] Will fix this. 3.1. Single-Segment PW |<-------------- PW1 --------------->| - PE1 -------------- P1 ---------------- PE2 - / \ / \ CE1 CE2 \ / \ / - PE3 -------------- P2 ---------------- PE4 - |<-------------- PW2 --------------->| Figure 1 Each CE is multi-homed to two PEs. Hence, there are two divergent paths between the CEs. SB> It does not follow that the paths are divergent! Who knows SB> what happens in the IP layer and the underlying transport SB> network. [yshen] We could rephrase this and remove "divergent". All we want to say h= ere is that there are two distinct sets of AC-PW-AC between the CEs. At any given time, each CE sends traffic via only one AC and receives traffic via only one AC. The two ACs MAY or MAY NOT be the same. SB> May not be the same what? If they are actually the same AC you SB> have no redundancy. [yshen] Will rephrase it. All we want to say is that at a given time, the C= E may send traffic over one AC and receive traffic over another AC. The AC used to send traffic is determined by the CE, and MAY rely on an end-to-end OAM mechanism between the CEs. The AC used for the CE to receive traffic is determined by the state of the network and the protection mechanism in use, as described later in this document. From the perspective of traffic flowing towards a given CE, the set of PWs, PEs and ACs involved can be viewed to serve primary and backup (or active and standby) roles. When the network is in a steady state, the PW that is intended to carry the traffic is referred to as a primary PW. The PE at the egress of the primary PW is a primary PE. The AC connecting the CE and the primary PE is a primary AC. The other PW may be used to carry the traffic upon a network failure, and is referred to as a backup PW. The PE at the egress of the backup PW is a backup PE. The AC connecting the CE and the backup PE is a backup AC. In this document, the following primary and backup roles are assigned for the traffic going from CE1 to CE2: Primary PW: PW1 Yimin Shen, et al. Expires January 25, 2015 [Page 5] Internet-Draft PW Endpoint Fast Failure Protection July 2014 Primary PE: PE2 Primary AC: CE2-PE2 Backup PW: PW2 Backup PE: PE4 Backup AC: CE2-PE4 In this case, an egress AC failure refers to the failure of the AC CE2-PE2. An egress node failure refers to the failure of PE2. The backup PE, backup PW and backup AC may be used to carry traffic after a PW endpoint failure, when CE1 and CE2 switches traffic to PW2 in local repair or global repair, as described later in this document. |<-------------- PW1 --------------->| ------------- P1 ---------------- PE2 - / \ / \ CE1 -- PE1 CE2 \ / \ / ------------- P2 ---------------- PE4 - |<-------------- PW2 --------------->| Figure 2 Figure 2 shows another possible scenario, where CE1 is single-homed to PE1, while CE2 remains multi-homed to PE2 and PE4. From the perspective of egress protection for the traffic from CE1 to CE2, this topology is not much different than Figure 1. However, for the SB> "not much different than Figure 1" is not helpful, either it is the same, or you need to explain the difference. [yshen] Will rephrase. The difference is actually described after "However.= ..". traffic in the direction from CE2 to CE1, PE1 must anticipate traffic on both PW1 and PW2, and sends it to CE1 over the AC CE1-PE1. SB> What does it mean to anticipate traffic. [yshen] To anticipate incoming traffic over either PW1 or PW2. Will rephras= e. 3.2. Multi-Segment PW Yimin Shen, et al. Expires January 25, 2015 [Page 6] Internet-Draft PW Endpoint Fast Failure Protection July 2014 |<--------------- PW1 --------------->| |<----- SEG1 ----->|<----- SEG2 ----->| - TPE1 -------------- SPE1 --------------- TPE2 - / \ / \ CE1 CE2 \ / \ / - TPE3 -------------- SPE2 --------------- TPE4 - |<----- SEG3 ----->|<----- SEG4 ----->| |<--------------- PW2 --------------->| Figure 3 Figure 3 shows a topology that is similar to Figure 1 but in an MS-PW environment. PW1 and PW2 are both MS-PWs. PW1 is established between TPE1 and TPE2, and switched between segments SEG1 and SEG2 at SPE1. PW2 is established between TPE3 and TPE4, and switched between segments SEG3 and SEG4 at SPE2. CE1 is multi-homed to TPE1 and TPE3. CE2 is multi-homed to TPE2 and TPE4. The transport tunnels of the PW segments are not shown in this figure for clarity. In this document, the following primary and backup roles are assigned for the traffic going from CE1 to CE2: Primary PW: PW1 Primary T-PE: TPE2 Primary S-PE: SPE1 Primary AC: CE2-TPE2 Backup PW: PW2 Backup T-PE: TPE4 Backup S-PE: SPE2 Backup AC: CE2-TPE4 In this case, an egress AC failure refers to the failure of the AC CE2-TPE2. An egress node failure refers to the failure of TPE2. An S-PE failure refers to the failure of SPE1. Yimin Shen, et al. Expires January 25, 2015 [Page 7] Internet-Draft PW Endpoint Fast Failure Protection July 2014 The backup T-PE, backup PW and backup AC are used for protecting the primary PW against egress AC failure and egress node failure. The backup S-PE and the backup PW are used for protecting the primary PW against S-PE failure, as described later in this document. For consistency with the SS-PW scenario, primary T-PEs and a primary S-PEs may simply be referred to as primary PEs in this document, where specifics is not required. Similarly, backup T-PEs and backup S-PEs may be referred to as backup PEs. 4. Theory of Operation The fast protection mechanism in this document provides three types of protection for PWs, corresponding to the three types of failures described in Section 1. a. Egress AC protection b. Egress (T-)PE node protection c. S-PE node protection The mechanism assumes a multi-homed CE with connectivity to a primary PE and a backup PE, and the existence of a backup PW in the network. In S-PE node protection, it also assumes the existence of a backup S-PE on the backup PW. SB> Do the PWs need to be symmetric - could you have more S-PEs on one that you have on the other? [yshen] You could. For a given S-PE, as long as you can find another PE to = serve as protector, it will work.=20 4.1. Local Repair and Protector The mechanism relies on local repair to be performed by routers SB> Do you mean routers or PEs? Routers of more likely LSRs operate at a different layer and have no business knowing about PWs. [yshen] routers (LSRs). Yes, they have no idea about PWs. This draft doesn'= t assume they know or care about PWs. SB> Has this work been reviewed my MPLS WG? I am concerned that you are doing a bunch of layer violation without explaining the how this is achieved or whether it is acceptable within the MPLS architecture. [yshen] There is no layer violation. The PLR simply redirect traffic from t= he original tunnel to a bypass tunnel, by doing a top label swap, without t= ouching, changing or knowing the PW label. Please take a close look at the = text. upstream adjacent to failures. Each of these routers is referred to as a "point of local repair" (PLR). A PLR MUST be able to detect a failure by using a rapid mechanism, such as physical layer failure detection, Bidirectional Failure Detection (BFD) (RFC 5880), etc. In anticipation of the failure, the PLR MUST also pre-establish a bypass PSN tunnel to a "protector", and pre-install a bypass route in the data plane. The bypass tunnel MUST have the property that it will not be affected by the topology changes in the event of the failure. SB> This is far too imprecise - you need to separate operations and topologies in the PW layer from operations and topologies in the PSN layer [yshen] Similar to existing IP/MPLS fast-reroute RFCs, this draft doesn't r= estrict local repair trigger to any specific failure detection mechanisms. = Any mechanism will work.=20 SB> In each case you need to be clear how you are detecting failure by specifying the MEPs and MIPs you are testing. Upon detecting the failure, the PLR MUST invoke the bypass route in the data plane, and reroute PW traffic to the protector through the bypass tunnel. The protector MUST in turn send the traffic to the target CE. SB> No the protector knows nothing about CEs - they are in the client layer, and you can only protect at the server layer or the server's server layer. [yshen] In collocated model, the protector is a PE. In the centralized mode= l, the protector may be an LSR , and it needs to participate in LDP PW sign= aling to understand PWs. See the related sections and LDP extensions in thi= s draft. This centralized model is optional. This procedure is referred to as local repair. Different routers may serve as PLR and protector in different scenarios. SB> Remember they are not routers - they are xPEs or LSRs. [yshen] Again, in collocated model, the protector is a PE. In the centraliz= ed model, the protector may be an LSR , and it needs to participate in LDP = PW signaling to understand PWs. See the related sections and LDP extensions= in this draft. But this centralized model is optional. [yshen] PLRs may be LSRs, but they don't need to know PWs, because all they= do is to swap top label (tunnel label) to a bypass tunnel's label. SB> In each of the following we need to note that these are not RFC3985 PEs, even if they take no part in the protection such as the PEs on the left. Indeed I am wondering if you need to update RFC3985 and RFC5659 [yshen] There is no need to update RFC3985 and RFC5659. Yimin Shen, et al. Expires January 25, 2015 [Page 8] Internet-Draft PW Endpoint Fast Failure Protection July 2014 o In egress AC protection, the PLR is the primary PE that terminates the primary PW and hosts the primary AC, and the protector is the backup PE (Figure 4). |<-------------- PW1 --------------->| - PE1 -------------- P1 ---------------- PE2 - / PLR \ / | \ CE1 bypass| CE2 \ | / \ | / - PE3 -------------- P2 ---------------- PE4 - protector |<-------------- PW2 --------------->| Figure 4 o In egress PE node protection, the PLR is the penultimate hop router of the transport tunnel of the primary PW, and the protector is the backup PE (Figure 5). |<-------------- PW1 --------------->| - PE1 -------------- P1 ------- P3 ----- PE2 - / PLR \ \ / \ \ CE1 bypass\ CE2 \ \ / \ \ / - PE3 -------------- P2 ---------------- PE4 - protector |<-------------- PW2 --------------->| Figure 5 SB> Note that it is nothing like as clean as this, if as you later have, some of P3's traffic needs to go to PE4 and some to PE5. Also what about the [yshen] Note that we are talking about a single PW, rather than multiple PW= s carried by a single tunnel. o In S-PE node protection, the PLR is the penultimate hop router of the transport tunnel of the primary PW segment, and the protector is the backup S-PE (Figure 6). Yimin Shen, et al. Expires January 25, 2015 [Page 9] Internet-Draft PW Endpoint Fast Failure Protection July 2014 |<--------------- PW1 --------------->| |<----- SEG1 ----->|<----- SEG2 ----->| - TPE1 ----- P4 ----- SPE1 -------------- TPE2 - / PLR \ \ / \ \ CE1 bypass\ CE2 \ \ / \ \ / - TPE3 --------------- SPE2 -------------- TPE4 - protector |<----- SEG3 ----->|<----- SEG4 ----->| |<--------------- PW2 --------------->| Figure 6 A PLR can realize its role based on configuration or the signaling of transport tunnel. For example, in the case where the transport tunnel is signaled by RSVP, the penultimate hop router could realize SB> Could realize is not sufficient. The mechanism needs to be=20 unconditional. [yshen] Will rephrase. that it is the PLR for egress (T-)PE or S-PE failure based on the RRO in Resv message, which should indicate that the router is one hop away from the PE. The detail of how this could be achieved on a per- protocol basis is out of the scope of this document. SB> So where is it in scope? How do I find out how to do it? In all scenarios, when a PLR reroutes traffic through a bypass tunnel to a protector during local repair, it MUST keep the label of the primary PW intact in the packets. This obviates the need for the PLR to maintain bypass routes on a per-PW basis, and allows a single bypass tunnel to carry traffic for multiple PWs. SB> OK, but didn't I read something about PE protecting subsets of the egress traffic of other PEs? How would that work without per PW information= ? [yshen] PWs to a given PE may be protected by multiple protectors. A set of= PWs sharing the same protector X can be carried by the same tunnel (destin= ed to the context ID of ). PWs protected by a different prot= ector Y must be carried by different tunnel (destined to the context ID of = ). The PLR of each tunnel doesn't need to know PW info. All = it does is to swap tunnel label to a bypass tunnel's label, and the bypass = tunnel will guide the traffic to the intended protector. The procedure also requires that the protector SHOULD be able to forward the traffic based on a PW label that is assigned by the primary PE, and ensure the traffic to eventually reach the target CE. From the protector's perspective, this PW label is an upstream assigned label (RFC 5331). SB> .. but the protector may be a P router and know nothing about PWs. [yshen] Again, in collocated model, the protector is a PE. In the centraliz= ed model, the protector may be an LSR , and it needs to participate in LDP = PW signaling to understand PWs. See the related sections and LDP extensions= in this draft. But this centralized model is optional. To accomplish this, the protector SHOULD learning the PW label from the primary PE prior to the failure, and install proper forwarding state for the PW label in a dedicated label space for the primary PE. SB> This is a new PE to P router protocol [yshen] The LDP extension is defined in a subsequent section. During local repair, the protector SHOULD perform PW label lookup in this label space. SB> This has to be signed off by MPLS WG SB> How can this only be a SHOULD - why is it not a MUST? [yshen] Will rephrase. SB> What do you do to ensure that they even have compatible label managers? [yshen] The LDP extensions defined in this draft covers how to negotiate th= e capability. SB> Doesn't this mean a P router looking up two labels to do the repair? [yshen] PLR only swaps the top label (i.e. tunnel label) to bypass label ta= ble, when doing the local repair. The above examples have shown the scenarios where the protectors are backup (T/S-)PEs. In other scenarios, a protector may be a dedicated router that assumes such role, separate from the backup (T/S-)PE of a primary PW. During local repair, the PLR MUST still reroute traffic to the protector through a bypass tunnel. The protector MUST in turn send the traffic to the backup (T/S-)PE, which MUST then send the Yimin Shen, et al. Expires January 25, 2015 [Page 10] Internet-Draft PW Endpoint Fast Failure Protection July 2014 traffic to the target CE via a backup AC or a backup PW segment. More detail will be described in Section 4.3. 4.2. Context Identifier A protector MAY protect multiple primary PEs. SB> This requires that a P router knows about PWs - how does it do that? [yshen] The protector will perform context label forwarding. The bypass tun= nel points to a context label table, and the protector looks up the PW labe= l in that table. The protector MUST maintain a separate label space for each primary PE. Likewise, the PWs terminated on a primary PE MAY be protected by multiple protectors, each for a subset of the PWs. In any case, a given primary PW SHOULD be associated with one and only one pair of {primary PE, protector}. An IPv4/v6 address is assigned to each ordered pair of {primary PE, protector} to facilitate protection establishment. This address is referred to as a "context identifier". It MUST be globally unique, or unique in the address space of the network where the primary PE and the protector reside. SB> I think you need to make clear that this is not backwards compatible with existing PW PEs. [yshen] PEs will need to support the extensions defined by this draft. SB> You also need to explain how the IP based context identifier mechanism works. Is it in the control plane or the data plane? 4.2.1. Semantics The semantics of a context identifier is twofold. o It identifies a primary PE and an associated protector. In other words, it identifies a primary PE on a per protector basis. A given primary PE may be protected by multiple protectors, each for a subset of the primary PWs terminated on the primary PE. A distinct context identifier MUST be assigned to the primary PE and each protector. For each primary PW, its ingress PE MUST set up or resolve a transport tunnel with destination as the context identifier of the {primary PE, protector}, rather than a private IP address of the primary PE. This not only allows the transport tunnel to reach the primary PE, but also conveys the identity of the protector to the PLR(s) along the transport tunnel. Each PLR can in turn use this information to set up a bypass tunnel to the protector without relying on local configuration. o It indentifies the primary PE's label space on the protector. The protector may protect PWs for multiple primary PEs. For each primary PE, it MUST maintain a separate label space to store the PW labels assigned by that primary PE. It MUST associate a PW label with a label space via the context identifier of the {primary PE, protector}, as described below. SB> Is this context identifier an IP address or an MPLS label? Where is it carried? [yshen] a context identifier is an IP address. If the tunnel is IP tunnel, = it is carried in IP header as dest address. If the tunnel is MPLS tunnel, i= t is indicated by the label. In addition to the normal LDP PW signaling, the primary PE MUST have a targeted LDP session with the protector, and advertise PW labels to the protector via LDP Label Mapping messages (See Yimin Shen, et al. Expires January 25, 2015 [Page 11] Internet-Draft PW Endpoint Fast Failure Protection July 2014 Section 5 for detail). The primary PE MUST attach the context identifier to each message. Upon receiving the message, the protector MUST install the advertised PW label in the label space identified by the context identifier. SB> I am currently confused about how a data packet carries the PW label provided by another PE. When a PLR sets up or resolve a bypass tunnel to the protector, it MUST set the destination to the context identifier, rather than a private IP address of the protector. Once established, the bypass tunnel, with either its MPLS label or IP tunnel destination address, is used as the identifier of label space. On the protector, all PW packets received on the bypass tunnel MUST be forwarded based on a label lookup in that label space. SB> I do not understand the data plane structure that the above sentence is describing. [yshen] This is basically the context label forwarding paradigm (RFC 5331).= From the protector's perspective, the bypass tunnel serves as a context, a= nd indicates the label space of the primary PE where the PW label must be l= ooked up. 4.2.2. Advertisement and Path Computation Using a context identifier as destination for both transport tunnel and bypass tunnel requires both the primary PE and the protector to advertise the context identifier via IGP as an IP address reachable through both routers in routing domain and/or TE domain. This imposes the following requirements on path computation for these tunnels. o For the transport tunnel, the ingress PE MUST choose the primary PE as the actual endpoint. o For the bypass tunnel, the PLR MUST choose the protector as the actual endpoint. In egress (T-)PE node protection and S-PE node protection, the bypass tunnel MUST avoid the primary (S-)PE. The detail of how the primary PE and the protector may advertise a context identifier is independent of this mechanism and out of the scope of this document. SB> Given that you give signalling data structures later, I am confused as to how this can be out of scope of this text. Surely this is needed to implement an interoperable solution? [yshen] There is no new extension needed for IGP. Both PEs advertise the co= ntext ID. That's it. Will rephrase it. One approach would be to advertise it as a virtual proxy node connected to both routers, with the link between the proxy node and the primary PE having a more preferable IGP or TE metric than the link between the proxy node and the protector. The ultimate goal is for a path computation algorithm, such as CSPF (constrained shortest path first), LFA (RFC 5286) and MRT ([IP-LDP- FRR-MRT]), to be able to compute the paths that meet the above requirements. 4.3. Protection Models There are two protection models based on the location of a protector. A network MAY use either model, or a combination of both. Yimin Shen, et al. Expires January 25, 2015 [Page 12] Internet-Draft PW Endpoint Fast Failure Protection July 2014 4.3.1. Co-located Protector In this model, the protector is a backup PE that is directly connected to the target CE via a backup AC, or it is a backup S-PE on a backup PW. That is, the protector is co-located with the backup (S-)PE. Examples of this model have been introduced in Figure 4, Figure 5 and Figure 6 in Section 4.1. In egress AC protection and egress PE node protection, when a protector receives traffic from the PLR, it forwards the traffic to the CE via the backup AC. This is shown in Figure 7, where PE2 is the PLR for egress AC failure, P3 is the PLR for PE2 failure, and PE4 (the backup PE) is the protector. |<-------------- PW1 --------------->| - PE1 -------------- P1 ------- P3 ----- PE2 ---- / PLR \ PLR \ / \ | \ CE1 bypass\ |bypass CE2 \ \ | / \ \ | / - PE3 -------------- P2 ---------------- PE4 ---- protector |<-------------- PW2 --------------->| Figure 7 In S-PE node protection, when a protector receives traffic from the PLR, it MUST forward the traffic via the next segment of the backup PW. The T-PE of the backup PW MUST in turn forward the traffic to the CE via a backup AC. This is shown in Figure 8, where P4 is the PLR for SPE1 failure, and SPE2 (the backup S-PE) is the protector for SPE1. Yimin Shen, et al. Expires January 25, 2015 [Page 13] Internet-Draft PW Endpoint Fast Failure Protection July 2014 |<--------------- PW1 --------------->| |<----- SEG1 ----->|<----- SEG2 ----->| - TPE1 ----- P4 ----- SPE1 -------------- TPE2 - / PLR \ \ / \ \ CE1 bypass\ CE2 \ \ / \ \ / - TPE3 --------------- SPE2 -------------- TPE4 - protector |<----- SEG3 ----->|<----- SEG4 ----->| |<--------------- PW2 --------------->| Figure 8 In the co-located protector model, the number of context identifiers needed by a network is the number of distinct {primary PE, backup PE} pairs. From the perspective of scalability, the model is suitable for networks where the number of backup PEs for any given primary PE is relatively small. 4.3.2. Centralized Protector In this model, the protector is a dedicated P router or PE router that serves the role. In egress AC protection and egress PE node protection, the protector MAY or MAY NOT be a backup PE with a direct connection to the target CE. In S-PE node protection, the protector MAY or MAY NOT be a backup S-PE on the backup PW. In egress AC protection and egress PE node protection, when the protector receives traffic from the PLR, if the protector has a direct connection (i.e. backup AC) to the CE, it MUST forward the traffic to the CE via the backup AC, which is similar to Figure 7. Otherwise, it MUST forward the traffic to a backup PE, which MUST then forward the traffic to the CE via a backup AC. This is shown in Figure 9, where the protector receives traffic from P3 (the PLR for egress PE failure) or PE2 (the PLR for egress AC failure) and forwards the traffic to PE4 (the backup PE). The protector may be protecting other PWs as well, which is not shown in this figure for clarity. SB> If you are going to cover the shared case, I think you need to make it much clearer how the PWs are identified from the received data packets. Yimin Shen, et al. Expires January 25, 2015 [Page 14] Internet-Draft PW Endpoint Fast Failure Protection July 2014 |<------------- PW1 --------------->| - PE1 ------------- P1 ------- P3 ----- PE2 -- / PLR \ PLR \ / \ / \ / bypass\ /bypass \ / \ / \ CE1 protector CE2 \ \ / \ \ / \ \ / \ \ / - PE3 ------------- P2 -----------------PE4 -- |<------------- PW2 --------------->| Figure 9 In S-PE node protection, when the protector receives traffic from the PLR, if the protector is a backup S-PE of the backup PW, it MUST forward the traffic via the next segment of the backup PW, and the T-PE of the backup PW MUST forward the traffic to the CE via a backup AC, which is similar to Figure 8. Otherwise, the protector MUST first forward the traffic to the backup S-PE, which MUST then forward the traffic via the next segment of the backup PW. Finally, the T-PE of the backup PW MUST forward the traffic to the CE via a backup AC. This is shown in Figure 10, where the protector forwards traffic to SPE2 (the backup S-PE), SPE2 forwards the traffic to TPE4 via SEG4, and TPE4 finally forwards traffic to CE2. The protector may be protecting other PW segments as well, which is not shown in this figure for clarity. Yimin Shen, et al. Expires January 25, 2015 [Page 15] Internet-Draft PW Endpoint Fast Failure Protection July 2014 |<--------------- PW1 --------------->| |<----- SEG1 ----->|<----- SEG2 ----->| - TPE1 ----- P4 ----- SPE1 -------------- TPE2 - / PLR \ \ / \ \ / bypass\ \ / \ \ CE1 protector CE2 \ \ / \ \ / \ \ / \ \ / - TPE3 --------------- SPE2 -------------- TPE4 - |<----- SEG3 ----->|<----- SEG4 ----->| |<--------------- PW2 --------------->| Figure 10 The centralized protector model provides the convenience for multiple primary PEs to share one protector. Each primary PE MAY only need the one protector to protect all of its PWs. From the perspective of scalability, the number of context identifiers needed by a network MAY be bound to the number of primary PEs. 4.4. Transport Tunnel The ingress PE of a primary PW associates the PW with the primary egress PE through LDP signaling. In addition, as mentioned in Section 4.2.1, the ingress PE MUST associate the transport tunnel of the PW with the context identifier of the {primary PE, protector}, and set up or resolve the transport tunnel by using the context identifier as destination. This not only ensures that PW traffic be transported to the primary PE, but also facilitates bypass tunnel establishment at PLR(s), as the context identifier implies the identity of the protector as well. This is also the case for a multi-segment PW, where the ingress PE and egress PE are T/S-PEs. The association between the transport tunnel and the context identifier at the ingress PE MAY be achieved by configuration or an auto-discovery mechanism. In the later case, the ingress PE MAY learn the context identifier from the primary (egress) PE, if the primary PE advertises the context identifier as "third party next hop" in IPv4/v6 Interface_ID (RFC 3471, RFC 3472) in the LDP Label Mapping message of the primary PW. Yimin Shen, et al. Expires January 25, 2015 [Page 16] Internet-Draft PW Endpoint Fast Failure Protection July 2014 4.5. Bypass Tunnel A PLR may protect multiple PWs associated with one or multiple pairs of {primary PE, protector}. The PLR MUST establish a bypass tunnel to each protector for each distinct context identifier associated with that protector. The destination of the bypass tunnel MUST be the context identifier (Section 4.2.1). The PLR may derive the context identifier from the destination of the transport tunnel that traverses it. For examples, in Figure 7 and Figure 9, a bypass tunnel is established from PE2 (PLR for egress AC failure) to the protector, and another bypass tunnel is established from P3 (PLR for egress node failure) to the protector. In Figure 8 and Figure 10, a bypass tunnel is established from P4 (PLR for S-PE failure) to the protector. During local repair, the PLR reroutes traffic to the protector through a bypass tunnel with PW label intact in the packets. This normally involves pushing a label to the label stack, if the bypass tunnel is an MPLS tunnel, or pushing an IP header to the packets, if the bypass tunnel is an IP tunnel. SB> Surely it is normally a swap? [yshen] yes, this is just a label swap of the top label, from tunnel label = to bypass tunnel label. SB> I am somewhat confused about what this all looks like when this is IP. The only PS/IP other than for SATOP are defined by L2TPv3 WG. There is no IP MS-PW definition that I am aware of. I think you need to be much clearer about what is going on when you discuss PW over IP=20 egress repair. The protector MUST in turn forward the traffic based on the PW label. To achieve such kind of forwarding, the protector MUST rely on the bypass tunnel as a context to determine the primary PE's label space. If the bypass tunnel is an MPLS tunnel, the protector MUST have assigned a non-reserved label to the bypass tunnel during the establishment of the bypass tunnel, and hence this label can serve as the context. If the bypass tunnel is an IP tunnel, the protector can simply rely on the context identifier carried as the destination address in IP header. A bypass tunnel MUST have the property that it is not affected by the topology changes caused by the failure. Therefore, it can be used to transmit traffic for local repair. It SHOULD remain effective, until the traffic is moved to another fully functional egress AC, PW and/or transport tunnel. 4.6. Forwarding State on Protector A protector MUST learn PW labels from all the primary PEs that it protects (Section 5.2), and maintain the PW labels in respective label spaces of the primary PEs. In the control plane, a label space is identified by the context identifier of a pair of {primary PE, protector}. In the forwarding plane, it is indicated by the bypass tunnel(s) destined for the context identifier. SB> Are you saying that this mechanism mandates no PHP? [yshen] It mandates PHP for bypass tunnels only, as their labels serve as c= ontexts on protectors. This is not mandatory for normal tunnels. Yimin Shen, et al. Expires January 25, 2015 [Page 17] Internet-Draft PW Endpoint Fast Failure Protection July 2014 4.6.1. Examples of Co-located Protector In Figure 7, PE4 is a co-located protector that protects PW1 against egress AC failure and egress node failure. It maintains a label space for PE2, which is identified by the context identifier of {PE2, PE4}. It learns PW1's label from PE2, and installs an forwarding entry for the label in that label space. The nexthop of the forwarding entry indicates a label pop with outgoing interface pointing to the backup AC CE2-PE4. SB> I am not sure what you are describing in the above. Is this an MPLS operation or a PW operation. If the latter it is not a simple label pop. [yshen] It is PW label pop.=20 In Figure 8, SPE2 is a co-located protector that protects PW1 against S-PE failure. It maintains a label space for SPE1, which is identified by the context identifier of {SPE1, SPE2}. It learns SEG1's label from SPE1, and installs a forwarding entry in the label space. The nexthop of the forwarding entry indicates a label swap to SEG4's label. 4.6.2. Examples of Centralized Protector In the centralized protector model, for each primary PW of which the protector is not a backup (S-)PE, the protector MUST also learn the label of the backup PW from the backup (S-)PE (Section 5.3). This is the backup (S-)PE that the protector will forward traffic to. The protector MUST install a forwarding entry with label swap from the primary PW's label to the backup PW's label. In Figure 9, the protector is a centralized protector that protects PW1 against egress AC failure and egress node failure. It maintains a label space for PE2, which is identified by the context identifier of {PE2, protector}. It learns PW1's label from PE2, and PW2's label from PE4. It installs a forwarding entry for PW1's label in the label space. The nexthop of the forwarding entry indicates a label swap to PW2's label. In Figure 10, the protector is a centralized protector that protects the PW segment SEG1 of PW1 against the node failure of SPE1. It maintains a label space for SPE1, which is identified by the context identifier of {SPE1, protector}. It learns SEG1's label from SPE1, and learns SEG3's label from SPE2. It installs a forwarding entry for SEG1's label in the label space. The nexthop of the forwarding entry indicates a label swap to SEG3's label. 5. LDP Extensions As described in previous sections, a targeted LDP session MUST be established between each pair of primary PE and protector. The primary PE sends Label Mapping message over this session to advertise primary PW labels to the protector. In the centralized protector Yimin Shen, et al. Expires January 25, 2015 [Page 18] Internet-Draft PW Endpoint Fast Failure Protection July 2014 model, a targeted LDP session MUST also be established between a backup (S-)PE and a protector. The backup PE sends Label Mapping message over this session to advertise backup PW labels to the protector. To facilitate the procedures, this document defines a new "Protection FEC Element" TLV. The Label Mapping messages of both the LDP sessions above MUST carry this TLV to indicate the identity of a primary PW. Specifically, in the centralized protector model, the Protection FEC Element TLV advertised by a backup (S-)PE MUST match the one advertised by the primary PE, so that the protector can associate the primary PW's label with the backup PW's label, and perform a label swap. This document also defines the encoding of Capability Parameter TLV (RFC 5561) for a new "Egress Protection Capability", to allow a protector to announce its capability of processing the above Protection FEC Element TLV and performing context specific label switching for PW labels. The procedures in this section are only applicable, if the protector advertises the Egress Protection Capability, the primary PE supports the advertisement of the Protection FEC Element TLV, and in the centralized protector model, the backup PE also supports the advertisement of the Protection FEC Element TLV. 5.1. Egress Protection Capability TLV A protector MUST advertise the Egress Protection Capability TLV in its Initialization message and Capability message, over the LDP session with a primary PE. In the centralized protector model, the protector MUST also advertise the TLV over the LDP session with a backup PE. The TLV carries one or multiple context identifiers. To the primary PE, the TLV SHOULD carry the context identifier of the {primary PE, protector}. In the centralized protector model, the TLV SHOULD carry to the backup PE multiple context identifiers, one for each {primary PE, protector} where the backup PE serves as a backup for the primary PE. This TLV SHOULD NOT be advertised by the primary PE or the backup PE to the protector. The processing of the Egress Protection Capability TLV by a receiving router SHOULD follow the procedures defined in RFC 5561. In particular, the router SHOULD advertise PW information to the protector by using the Protection FEC Element TLV, only after it has received the Egress Protection Capability TLV from the protector. It SHOULD validate each context identifier included in the TLV, and advertise the information of only those PWs that are associated with the context identifier. It SHOULD withdraw previously advertised Yimin Shen, et al. Expires January 25, 2015 [Page 19] Internet-Draft PW Endpoint Fast Failure Protection July 2014 Protection FEC TLVs, when the protector has withdrawn a previously advertised context identifier or the entire Egress Protection Capability TLV via Capability message. The encoding of the Egress Protection Capability TLV is defined as below. It conforms to the format of Capability Parameter TLV specified in RFC 5561. 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |U|F| Egress Protection (TBD) | Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |S| Reserved | | +-+-+-+-+-+-+-+-+ | | | ~ Capability Data =3D context identifier(s) ~ | | | +-+-+-+-+-+-+-+-+ | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 11 The U-bit MUST be set to 1 so that a receiver MUST silently ignore this TLV if unknown to it, and continue processing the rest of the message. The F-bit MUST be set to 0 since this TLV is sent only in Initialization and Capability messages, which are not forwarded. The TLV Code Point is TBD. It needs to be assigned by IANA. The S-bit indicates whether the sender is advertising (S=3D1) or withdrawing (S=3D0) the capability. The "Capability Data" is encoded with the context identifier of the {primary PE, protector}. SB> where is the structure of {primary PE, protector} defined? [yshen] The Protection FEC Element TLV carries the context ID of {primary P= E, protector}. The {primary PE, protector} tuple itself is not encoded. 5.2. PW Label Distribution from Primary PE to Protector A primary PE SHOULD advertise a primary PW's label to a protector by sending a Label Mapping message. The message includes a Protection FEC Element TLV (see Section 5.4 for encoding), and an Upstream- Assigned Label TLV (RFC 6389) encoded with the PW's label. The combination of the Protection FEC Element TLV and the PW label represents the primary PE's forwarding state for the PW. The Label Mapping message SHOULD also carry an IPv4/v6 Interface_ID TLV (RFC Yimin Shen, et al. Expires January 25, 2015 [Page 20] Internet-Draft PW Endpoint Fast Failure Protection July 2014 6389, RFC 3471) encoded with the context identifier of the {primary PE, protector}. The protector that receives this Label Mapping message SHOULD install a forwarding entry for the PW label in the label space identified by the context identifier. The nexthop of the forwarding entry SHOULD ensure packets to be sent towards the target CE via a backup AC or a backup (S-)PE, depending on the protection scenario. The protector SHOULD silently discard a Label Mapping message if the included context identifier is unknown to it. 5.3. PW Label Distribution from Backup PE to Protector In the centralized protector model, a backup PE SHOULD advertise a backup PW's label to a protector by sending a Label Mapping message. The message includes a Protection FEC Element TLV and a Generic Label TLV encoded with the backup PW's label. This Protection FEC Element MUST be identical to the Protection FEC Element TLV that the primary PE advertises to the protector (Section 5.2). The context identifier SHOULD NOT be encoded in Interface_ID TLV in this message. The protector that receives this Label Mapping message SHOULD associate the backup PW with the primary PW, based on the common Protection FEC Element TLV. It SHOULD distinguish between the Label Mapping message from the primary PE and the Label Mapping message from the backup PE based on the respective presence and absence of context identifier in Interface_ID TLV. It SHOULD install a forwarding entry for the primary PW's label in the label space identified by the context identifier. The nexthop of the forwarding entry SHOULD indicate a label swap to the backup PW's label, followed by a label push or IP header push for a transport tunnel to the backup PE. 5.4. Protection FEC Element TLV The Protection FEC Element TLV has type 0x83. Its format is defined as below: Yimin Shen, et al. Expires January 25, 2015 [Page 21] Internet-Draft PW Endpoint Fast Failure Protection July 2014 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type(0x83) | Reserved | Encoding Type | Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | | | ~ PW Information ~ | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 12 - Encoding Type Type of format that PW Information field is encoded. - Length Length of PW Information field in octets. - PW Information Field of variable length that specifies a PW For Encoding Type, 1 is defined for the PWid FEC Element format, and 2 is defined for the Generalized PWid FEC Element format (RFC 4447). 5.4.1. Encoding Format for PWid Yimin Shen, et al. Expires January 25, 2015 [Page 22] Internet-Draft PW Endpoint Fast Failure Protection July 2014 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type(0x83) | Reserved | Enc Type(1) | Length(16) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Ingress PE Address | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Egress PE Address | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Group ID | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | PW ID | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |C| PW Type | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 13 - Ingress PE Address IP address of the ingress PE of PW. - Egress PE Address IP address of the egress PE of PW. SB> How does this work for IPv6? - Group ID An arbitrary 32-bit value that represents a group of PWs and that is used to create groups in the PW space. - PW ID A non-zero 32-bit connection ID that, together with the PW Type field, identifies a particular PW. - Control word bit (C) A bit that flags the presence of a control word on this PW. If C =3D 1, control word is present; If C =3D 0, control word is not present. - PW Type A 15-bit quantity that represents the type of PW. SB> Needs a ref Yimin Shen, et al. Expires January 25, 2015 [Page 23] Internet-Draft PW Endpoint Fast Failure Protection July 2014 5.4.2. Encoding Format for Generalized PWid 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type(0x83) | Reserved | Enc Type(2) | Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Ingress PE Address | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Egress PE Address | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |C| PW Type | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | AGI Type | Length | Value | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ~ AGI Value (contd.) ~ | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | AII Type | Length | Value | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ~ SAII Value (contd.) ~ | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | AII Type | Length | Value | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ~ TAII Value (contd.) ~ | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 14 - Ingress PE Address IP address of the ingress PE of PW. - Egress PE Address IP address of the egress PE of PW. SB> IPv6? - Control word bit (C) A bit that flags the presence of a control word on this PW. If C =3D 1, control word is present; If C =3D 0, control word is not present. - PW Type A 15-bit quantity that represents the type of PW. Yimin Shen, et al. Expires January 25, 2015 [Page 24] Internet-Draft PW Endpoint Fast Failure Protection July 2014 - AGI Type, Length, Value, AGI Value Attachment Group Identifier of PW. - SAII Type, Length, Value, SAII Value Source Attachment Individual Identifier of PW. - TAII Type, Length, Value, TAII Value Target Attachment Individual Identifier of PW. 6. Revertive Behavior Subsequent to local repair, there are three strategies for the network to restore traffic to a fully functional PW. o Global revertive mode If the ingress CE is multi-homed (Figure 1), it MAY switch the traffic to a backup AC which is bound to a backup PW. Alternatively, if the ingress PE hosts a backup PW (Figure 2), the ingress PE MAY switch the traffic to the backup PW. These procedures are referred to as global repair. Possible triggers of a global repair include PW status, OAM, and BFD. o Control plane revertive mode In egress PE node protection and S-PE node protection, it is possible that the failure is limited to the link between the PLR and the primary (S-)PE, whereas the primary (S-)PE is still up. In this case, the PLR or an upstream router along the transport tunnel MAY reroute the tunnel around the failed link via an alternative path. Thus, the transport tunnel can continue to be used to carry the PW traffic to the primary (S-)PE. This procedure is driven by control plane convergence, and is referred to as control plane repair. o Local revertive mode The PLR MAY move traffic back to the primary PW, after the failure is resolved. In egress AC protection, upon detecting that the primary AC is restored, the PLR MAY start forwarding traffic over the AC again. Likewise, in egress PE node protection and S-PE node protection, upon detecting that the primary PE is restored, the PLR MAY re-establish the primary transport tunnel through the primary PE, and move the traffic from the bypass tunnel back to Yimin Shen, et al. Expires January 25, 2015 [Page 25] Internet-Draft PW Endpoint Fast Failure Protection July 2014 the transport tunnel. These procedures are referred to as local reversion. The fast protection mechanism in this document SHOULD be used in tandem with the global revertive mode. Particularly in the case of egress (S-)PE failure, if the ingress PE or the protector loses communication with the (S-)PE for an extensive period of time, the LDP session between them may go down. Consequently, the ingress PE may bring down the primary PW, or the protector may remove the forwarding entry of the primary PW label. In either case, the service will be disrupted. In other words, although the fast protection can temporarily repair traffic, control plane state may eventually be timed out if the failure persists. Therefore, it is recommended that the global revertive mode SHOULD be set up in advance, so that traffic can be moved to a fully functional backup PW shortly after the local repair. The control plane revertive mode may always happen as part of the convergence of control plane protocols. However, it is only applicable to the specific scenarios described above. The local revertive mode is optional. In the circumstances where the failure is caused by resource flapping, local reversion MAY be dampened to limit potential disruptions. Local revertive mode MAY be disabled completely by configuration. 7. IANA Considerations This document defines the encoding of the Capability Parameter TLV for the new "Egress Protection Capability" in Section 5. This would require IANA to assign a TLV Code Point to it. This document defines a new LDP Protection FEC Element TLV in Section 5. IANA has assigned the type value 0x83 to it. SB> I am very confused about what explicit actions you are asking IANA=20 to take. Are you saying that there are no IANA actions? [yshen] Need IANA to assign a TLV code to "Egress Protection Capability", a= s said above. 8. Security Considerations The security considerations discussed in RFC 5036, RFC 5331, RFC 3209, and RFC 4090 apply to this document. SB> Are there any PW security considerations that apply? SB> This is a new PW operational mode, so I am surprised that there are no new security considerations. An early security review might be useful. [yshen] Not sure about any specific security issues. _______________________________________________ pwe3 mailing list pwe3@ietf.org https://www.ietf.org/mailman/listinfo/pwe3 From nobody Wed Jul 30 12:43:52 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 381651A032E; Wed, 30 Jul 2014 12:43:48 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id IqXduuYfuJWG; Wed, 30 Jul 2014 12:43:45 -0700 (PDT) Received: from alln-iport-6.cisco.com (alln-iport-6.cisco.com [173.37.142.93]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 72F171A0201; Wed, 30 Jul 2014 12:43:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=6644; q=dns/txt; s=iport; t=1406749425; x=1407959025; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=BwdFXXkhoN7nhX7wLpk0LA0HQcdbO8ZtWjBa59gCxj8=; b=VvuBhjaXry7gIir0aXdw1hmTRP8u70PBMoAkOS1YXc8jXJKNX/W+Wbc5 EGrahJOXrN9caCpdkXL5Om5H41PT1IdX0N0x8Xch3sLEvIg0fRytYLXDn shent6vEPn3Ji2DVGT+ovNjRPfWg33KjUq4N3CSMjNW49i2K2H/WqGZDq k=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgkFAI9K2VOtJV2a/2dsb2JhbABZgw6BLdJWAYEQFneEBAEBBDotEhACAQg2EDIlAgQOiEfAQBeJf4UaMweDL4EbBZtklFODSYFvBzs X-IronPort-AV: E=Sophos;i="5.01,766,1400025600"; d="scan'208";a="65256160" Received: from rcdn-core-3.cisco.com ([173.37.93.154]) by alln-iport-6.cisco.com with ESMTP; 30 Jul 2014 19:43:44 +0000 Received: from xhc-aln-x07.cisco.com (xhc-aln-x07.cisco.com [173.36.12.81]) by rcdn-core-3.cisco.com (8.14.5/8.14.5) with ESMTP id s6UJhi3D022456 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Wed, 30 Jul 2014 19:43:44 GMT Received: from xmb-rcd-x08.cisco.com ([169.254.8.152]) by xhc-aln-x07.cisco.com ([173.36.12.81]) with mapi id 14.03.0123.003; Wed, 30 Jul 2014 14:42:59 -0500 From: "Sami Boutros (sboutros)" To: Mach Chen Thread-Topic: RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt Thread-Index: AQHPcL43MdQKFwuY10i9fAzq1cK1Rpu5z3cA Date: Wed, 30 Jul 2014 19:43:43 +0000 Message-ID: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.82.212.215] Content-Type: text/plain; charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/OUpYHJyQJ_1l3_mfr9C-3AiGkQI Cc: "rtg-dir@ietf.org" , "mpls@ietf.org" , "draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org" , "rtg-ads@tools.ietf.org" Subject: Re: [mpls] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Jul 2014 19:43:48 -0000 Resending.. On May 15, 2014, at 9:20 PM, Sami Boutros (sboutros) wrote: >>=20 >> Minor Issues:=20 >>=20 >> 1. Since the TTL TLV is defined for both MS-PW and bidirectional co-rout= ed >> LSP, it should be better to explicitly state this in the abstract sectio= n. >>=20 >=20 > Sami: Sure will do. >=20 >> 2. "LSP-Ping echo request", "LSP-Ping request", "MPLS echo request", "ec= ho >> request" and "request" are interchangeably used in the draft, it's bette= r to >> unify the usage of it to "MPLS echo request" (to align with the usage in >> RFC4379). For "echo reply", "bidirectional co-routed LSP", they have the >> similar issue. >>=20 >=20 > Sami: Ok, will fix that. >=20 >> 3.Section 3.1 >> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >> | Value | Reserved | Flags | >> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >>=20 >> For the TTL TLV, the value filed should include the "value", "Reserved" = and >> "Flags", so it's better to change the "Value" field to "TTL" field hence= to >> reduce the confusion. >>=20 >=20 > Sami: Sure. >=20 >> 4. Section 3.2 >> "This TLV shall be included in the echo request by the originator of >> request. The use of this TLV is optional. If a receiver does not >> understand the TTL TLV, it will simply ignore the TLV (Type value of >> TLV is assumed to be in the range of optional TLV's which SHOULD be >> ignored if an implementation does not support or understand them). In >> the absence of TTL TLV or if TTL TLV is ignored by a receiver, the >> determination of the TTL value used in the MPLS label on the echo >> reply is beyond the scope of this document." >>=20 >> What's your mean of "beyond the scope of this document" here? Is it to >> apply the procedures defined in RFC4379 or just let it to the >> implementation?I guess you assume to apply the definition in RFC4379, >=20 > Sami: It is out of scope of this document, but for sure procedure in 4379= apply. >> if >=20 >> so, the TTL of the MPLS label will be more probably set to 255, means th= e >> echo reply will be sent to the ingress of the MS-PW or LSP. I am not sur= e >> whether this is the right procedure, it seems a security issue. IMHO, it >> does not make any sense to expect the receiver to send echo reply in thi= s >> situation, and even sent, the initiator will not receive the reply. The >> safer way is to drop the whole echo request and record an error log. >=20 >=20 > Sami:=20 >=20 > We are not saying the receiver must send a reply, however if he does the = reply > may be received by the ingress node which might be the wrong node, since= =20 > the receiver may not set the TTL properly on the reply, keep in mind that= this is=20 > a receiver with an old implementation and the TLV is optional. >=20 > Please refer to the security section for your security concern. >=20 > Sami: >=20 >=20 >>=20 >> 5. Section 3.2 >>=20 >> "In other words, if the value of the TTL provided by this TLV does not >> match the TTL >> determined by other means, such as Switching Point TLV in MS-PW, then >> TTL TLV must be used." >> Here, it implies that the receiver has to perform TTL matching process, >> since how to set the TTL is independent of such matching, seems this >> sentence is redundant and confusion. >>=20 >=20 > Sami: Are you familiar with the switching point TLV? and what it includes= ? >=20 >> 6. Section 4. >>=20 >> "...The value field of the TTL TLV and the TTL field of the MPLS label a= re >> set to 2," >>=20 >> I guess that the MPLS Label is the PW label, right? It's better to add m= ore >> text to make this more explicit. In addition, how to set the TTL value o= f >> the tunnel Label? 255 or any other value? >>=20 >=20 > Sami: The tunnel label TTL is irrelevant here, however we will make it ex= plicit that this is a PW label. >=20 >> 5. Section 4.1. Traceroute mode >> "In the traceroute mode TTL value in the TLV is successively set to 1, >> 2, and so on. This is similar to the TTL values used for the label >> set on the packet." >> IMHO, some text may be needed to clarify which "FEC" should be carried, >> especially for MS-PW trace. Since in Section 4.0, the example says the F= EC >> of segment C-D should be carried, does it mean the FEC of last PW Segmen= t of >> the segment under test should be carried or the FEC will vary when TTL >> changed. For example, when perform segment trace (e.g., to trace B-D >> segment), when TTL is 1, which FEC should be carried? >=20 > Sami:=20 > We are not here redefining a trace route for a MS-PW, we are describing = how our extensions will apply. > Sami: >=20 >>=20 >> 6. Section 4.2. Error scenario >> For this scenario, do you need to define some error codes here? >=20 > Sami:=20 > The section describe how to handle the error scenario, there is no need f= or an error code. > Sami: >=20 >>=20 >> 7. For MS-PW trace, seems that you assume the tunnel is pipe mode, if so= , >> it should be explicitly stated. If not, you should define how the MS-PW >> trace works (given that the tunnels in both directions may span differen= t >> hops).=20 >=20 > Sami:=20 > Not sure I get the concern? Again we are not re-defining how MS-PW trace = work. >=20 > Thanks, >=20 > Sami >>=20 >> Nits:=20 >>=20 >> 1. Please check the text for acronyms that have not been expanded in the= ir >> first use. >>=20 >> 2. I run the idnits tool and found the following nits, please check and >> fix.=20 >> (See RFCs 3967 and 4897 for information about using normative >> references >> to lower-maturity documents in RFCs) >>=20 >> -- Looks like a reference, but probably isn't: 'RFC2119' on line 121 >>=20 >> -- Looks like a reference, but probably isn't: 'RFC4379' on line 258 >>=20 >> =3D=3D Unused Reference: '1' is defined on line 284, but no explicit >> reference >> was found in the text >>=20 >> =3D=3D Unused Reference: '2' is defined on line 287, but no explicit >> reference >> was found in the text >>=20 >> =3D=3D Unused Reference: '3' is defined on line 291, but no explicit >> reference >> was found in the text >>=20 >> 3. Section 3.2, >> 3.1 first para first sentence >> s/shall/SHALL >> 3.2 last para, the last second sentence >> s/must/MUST >>=20 >> 4. The draft quotes the MS-PW and bidirectional co-routed LSP concept, i= t's >> better to add related references to this document. >>=20 >>=20 >> Best regards, >> Mach >>=20 >>=20 >=20 From nobody Wed Jul 30 16:15:40 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B4E261A02E8; Wed, 30 Jul 2014 16:15:38 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.267 X-Spam-Level: X-Spam-Status: No, score=-2.267 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, IP_NOT_FRIENDLY=0.334, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PtIqUsRRHqpY; Wed, 30 Jul 2014 16:15:36 -0700 (PDT) Received: from mx0b-00103a01.pphosted.com (mx0b-00103a01.pphosted.com [67.231.152.227]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 4B6091A0197; Wed, 30 Jul 2014 16:15:36 -0700 (PDT) Received: from pps.filterd (m0002317.ppops.net [127.0.0.1]) by mx0b-00103a01.pphosted.com (8.14.5/8.14.5) with SMTP id s6UNF87h005333; Wed, 30 Jul 2014 19:15:20 -0400 Received: from vawvcgsie2k1302.ciena.com (LIN1-118-36-36.ciena.com [63.118.36.36]) by mx0b-00103a01.pphosted.com with ESMTP id 1nf4xa0wnu-1 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=NOT); Wed, 30 Jul 2014 19:15:20 -0400 Received: from VAWVE2K13MBX01.ciena.com (10.4.156.87) by VAWVCGSIE2K1302.ciena.com (10.4.62.16) with Microsoft SMTP Server (TLS) id 15.0.847.32; Wed, 30 Jul 2014 19:15:18 -0400 Received: from ONWVEXCHHT02.ciena.com (10.128.6.17) by VAWVE2K13MBX01.ciena.com (10.4.156.87) with Microsoft SMTP Server (TLS) id 15.0.847.32; Wed, 30 Jul 2014 19:15:18 -0400 Received: from ONWVEXCHMB04.ciena.com ([::1]) by ONWVEXCHHT02.ciena.com ([::1]) with mapi; Wed, 30 Jul 2014 19:15:18 -0400 From: "Shah, Himanshu" To: "Sami Boutros (sboutros)" , Mach Chen Date: Wed, 30 Jul 2014 19:15:16 -0400 Thread-Topic: RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt Thread-Index: AQHPcL43MdQKFwuY10i9fAzq1cK1Rpu5z3cA///lHDA= Message-ID: <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> In-Reply-To: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.12.52, 1.0.14, 0.0.0000 definitions=2014-07-30_08:2014-07-30,2014-07-30,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=7.0.1-1402240000 definitions=main-1407300259 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/L4TMmEbEaSPCEoUKbYE_-I_gBjA Cc: "rtg-dir@ietf.org" , "draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org" , "rtg-ads@tools.ietf.org" , "mpls@ietf.org" Subject: Re: [mpls] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Jul 2014 23:15:38 -0000 This draft fills a major shortcoming of the VCCV ping over MS-PW (especiall= y if reply mode is in-band). I am not sure why this draft is stuck (i.e. taking too long to go through). Is there a provisional IANA assignment for the TTL TLV type value? Thanks, himanshu -----Original Message----- From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Sami Boutros (sboutr= os) Sent: Wednesday, July 30, 2014 3:44 PM To: Mach Chen Cc: rtg-dir@ietf.org; mpls@ietf.org; draft-ietf-mpls-lsp-ping-ttl-tlv.all@t= ools.ietf.org; rtg-ads@tools.ietf.org Subject: Re: [mpls] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt Resending.. On May 15, 2014, at 9:20 PM, Sami Boutros (sboutros) wrote: >>=20 >> Minor Issues:=20 >>=20 >> 1. Since the TTL TLV is defined for both MS-PW and bidirectional=20 >> co-routed LSP, it should be better to explicitly state this in the abstr= act section. >>=20 >=20 > Sami: Sure will do. >=20 >> 2. "LSP-Ping echo request", "LSP-Ping request", "MPLS echo request",=20 >> "echo request" and "request" are interchangeably used in the draft,=20 >> it's better to unify the usage of it to "MPLS echo request" (to align=20 >> with the usage in RFC4379). For "echo reply", "bidirectional=20 >> co-routed LSP", they have the similar issue. >>=20 >=20 > Sami: Ok, will fix that. >=20 >> 3.Section 3.1 >> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >> | Value | Reserved | Flags | >> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >>=20 >> For the TTL TLV, the value filed should include the "value",=20 >> "Reserved" and "Flags", so it's better to change the "Value" field to=20 >> "TTL" field hence to reduce the confusion. >>=20 >=20 > Sami: Sure. >=20 >> 4. Section 3.2 >> "This TLV shall be included in the echo request by the originator of =20 >> request. The use of this TLV is optional. If a receiver does not =20 >> understand the TTL TLV, it will simply ignore the TLV (Type value of =20 >> TLV is assumed to be in the range of optional TLV's which SHOULD be =20 >> ignored if an implementation does not support or understand them). In =20 >> the absence of TTL TLV or if TTL TLV is ignored by a receiver, the =20 >> determination of the TTL value used in the MPLS label on the echo =20 >> reply is beyond the scope of this document." >>=20 >> What's your mean of "beyond the scope of this document" here? Is it=20 >> to apply the procedures defined in RFC4379 or just let it to the=20 >> implementation?I guess you assume to apply the definition in RFC4379, >=20 > Sami: It is out of scope of this document, but for sure procedure in 4379= apply. >> if >=20 >> so, the TTL of the MPLS label will be more probably set to 255, means=20 >> the echo reply will be sent to the ingress of the MS-PW or LSP. I am=20 >> not sure whether this is the right procedure, it seems a security=20 >> issue. IMHO, it does not make any sense to expect the receiver to=20 >> send echo reply in this situation, and even sent, the initiator will=20 >> not receive the reply. The safer way is to drop the whole echo request a= nd record an error log. >=20 >=20 > Sami:=20 >=20 > We are not saying the receiver must send a reply, however if he does=20 > the reply may be received by the ingress node which might be the wrong=20 > node, since the receiver may not set the TTL properly on the reply,=20 > keep in mind that this is a receiver with an old implementation and the T= LV is optional. >=20 > Please refer to the security section for your security concern. >=20 > Sami: >=20 >=20 >>=20 >> 5. Section 3.2 >>=20 >> "In other words, if the value of the TTL provided by this TLV does=20 >> not match the TTL determined by other means, such as Switching Point=20 >> TLV in MS-PW, then TTL TLV must be used." >> Here, it implies that the receiver has to perform TTL matching=20 >> process, since how to set the TTL is independent of such matching,=20 >> seems this sentence is redundant and confusion. >>=20 >=20 > Sami: Are you familiar with the switching point TLV? and what it includes= ? >=20 >> 6. Section 4. >>=20 >> "...The value field of the TTL TLV and the TTL field of the MPLS=20 >> label are set to 2," >>=20 >> I guess that the MPLS Label is the PW label, right? It's better to=20 >> add more text to make this more explicit. In addition, how to set the=20 >> TTL value of the tunnel Label? 255 or any other value? >>=20 >=20 > Sami: The tunnel label TTL is irrelevant here, however we will make it ex= plicit that this is a PW label. >=20 >> 5. Section 4.1. Traceroute mode >> "In the traceroute mode TTL value in the TLV is successively set to=20 >> 1, 2, and so on. This is similar to the TTL values used for the=20 >> label set on the packet." >> IMHO, some text may be needed to clarify which "FEC" should be=20 >> carried, especially for MS-PW trace. Since in Section 4.0, the=20 >> example says the FEC of segment C-D should be carried, does it mean=20 >> the FEC of last PW Segment of the segment under test should be=20 >> carried or the FEC will vary when TTL changed. For example, when=20 >> perform segment trace (e.g., to trace B-D segment), when TTL is 1, which= FEC should be carried? >=20 > Sami:=20 > We are not here redefining a trace route for a MS-PW, we are describing = how our extensions will apply. > Sami: >=20 >>=20 >> 6. Section 4.2. Error scenario >> For this scenario, do you need to define some error codes here? >=20 > Sami:=20 > The section describe how to handle the error scenario, there is no need f= or an error code. > Sami: >=20 >>=20 >> 7. For MS-PW trace, seems that you assume the tunnel is pipe mode, if=20 >> so, it should be explicitly stated. If not, you should define how the=20 >> MS-PW trace works (given that the tunnels in both directions may span=20 >> different hops). >=20 > Sami:=20 > Not sure I get the concern? Again we are not re-defining how MS-PW trace = work. >=20 > Thanks, >=20 > Sami >>=20 >> Nits:=20 >>=20 >> 1. Please check the text for acronyms that have not been expanded in=20 >> their first use. >>=20 >> 2. I run the idnits tool and found the following nits, please check=20 >> and fix. >> (See RFCs 3967 and 4897 for information about using normative=20 >> references >> to lower-maturity documents in RFCs) >>=20 >> -- Looks like a reference, but probably isn't: 'RFC2119' on line 121 >>=20 >> -- Looks like a reference, but probably isn't: 'RFC4379' on line 258 >>=20 >> =3D=3D Unused Reference: '1' is defined on line 284, but no explicit=20 >> reference >> was found in the text >>=20 >> =3D=3D Unused Reference: '2' is defined on line 287, but no explicit=20 >> reference >> was found in the text >>=20 >> =3D=3D Unused Reference: '3' is defined on line 291, but no explicit=20 >> reference >> was found in the text >>=20 >> 3. Section 3.2, >> 3.1 first para first sentence >> s/shall/SHALL >> 3.2 last para, the last second sentence s/must/MUST >>=20 >> 4. The draft quotes the MS-PW and bidirectional co-routed LSP=20 >> concept, it's better to add related references to this document. >>=20 >>=20 >> Best regards, >> Mach >>=20 >>=20 >=20 _______________________________________________ mpls mailing list mpls@ietf.org https://www.ietf.org/mailman/listinfo/mpls From nobody Wed Jul 30 17:38:11 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3AE251A016D for ; Wed, 30 Jul 2014 17:38:08 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -112.052 X-Spam-Level: X-Spam-Status: No, score=-112.052 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, MIME_CHARSET_FARAWAY=2.45, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org 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(10.201.5.240) with Microsoft SMTP Server (TLS) id 14.3.158.1; Thu, 31 Jul 2014 02:40:11 +0100 Received: from NKGEML512-MBS.china.huawei.com ([169.254.8.48]) by nkgeml404-hub.china.huawei.com ([10.98.56.35]) with mapi id 14.03.0158.001; Thu, 31 Jul 2014 09:39:59 +0800 From: Xuxiaohu To: "Nobo Akiya (nobo)" , Lizhenbin , "draft-li-mpls-global-label-usecases@tools.ietf.org" Thread-Topic: Comments on draft-li-mpls-global-label-usecases Thread-Index: Ac+pyGOnOvdR466BTIiQqApCOmu/xgBMxX8pAFXSx/AAAgpoUA== Date: Thu, 31 Jul 2014 01:39:59 +0000 Message-ID: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE0829A43F@NKGEML512-MBS.china.huawei.com> References: <5A5B4DE12C0DAC44AF501CD9A2B01A8D08233D1D@nkgeml506-mbx.china.huawei.com> In-Reply-To: Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.111.98.134] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/3WBQL03nT-kzaDEykQzG7x4KiAU Cc: "mpls@ietf.org" Subject: Re: [mpls] Comments on draft-li-mpls-global-label-usecases X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 01:40:17 -0000 > 2. Service Chaining >=20 > Why not let SFC folks to do their work, which SFC will then work on=20 > the MPLS data plane without any changes to the MPLS data plane nor=20 > architecture, certainly doesn't require any "global label" as this use=20 > case is describing. Unless the SFC WG require the "global label"=20 > (which it doesn't) or the MPLS WG is re-chartered to pick up creation=20 > of a tangent SFC solution specifically for MPLS, I don't think this use c= ase is valid. > [Robin] SFC WG truly works on some new header for service functions.=20 > We need to work out the when MPLS dataplane applied, what the possible=20 > problem and the solution. I think MPLS has been widely deployed in the=20 > existing network and SFC is the possible useful use case in MPLS=20 > network which should be taken into account in the MPLS world. MPLS=20 > global label is one of the possible solutions. This does not preclude oth= er solutions. [NOBO] SFC is data plane agnostic. When SFC runs on MPLS data plane, there = is no need to use global labels to describe service functions. Hi Nobo, It's fine that SFC is data plane agnostic. In the MPLS-SPRING-based SFC app= roach (http://www.ietf.org/proceedings/90/slides/slides-90-spring-5.pdf) wh= ere the SFC-specific header is implemented in the form of an MPLS label sta= ck, the SFC-encapsulated packet (i.e., the MPLS packet) could still be tran= sported between service nodes over any transport such as MPLS, IP (e.g., MP= LS-over-UDP or MPLS-over-GRE) or even Ethernet. To some extent, the MPLS-SP= RING-based SFC approach is data plane agnostic as well.=20 As had been mentioned in the above PDF, if it's the SFP information that is= encoded in the MPLS label stack, there is no need for global labels. Howev= er, provided that some operators did want to encode the SFC information, ra= ther than the SFP information in the MPLS label stack, the only feasible wa= y to realize such goal is to use global labels. Here the global labels just= need to be unique within the SFC-enabled domain, in other words, they are = domain-wide unique labels. Just like the global label usage proposed in the= segment routing mechanism, it only requires that a common label block, ref= erred to as SF Label Block (SFLB) is reserved by all service nodes and Clas= sifiers for SF SIDs. The domain-wide unique label for a given SF would be a= utomatically determined by adding the SF ID to the first label value of the= above SFLB.=20 Best regards, Xiaohu From nobody Wed Jul 30 20:46:12 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 904EA1A0097; Wed, 30 Jul 2014 20:46:09 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.202 X-Spam-Level: X-Spam-Status: No, score=-4.202 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id BqS6yaUdMp6p; Wed, 30 Jul 2014 20:46:06 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 54EBE1A007E; Wed, 30 Jul 2014 20:46:05 -0700 (PDT) Received: from 172.18.7.190 (EHLO lhreml401-hub.china.huawei.com) ([172.18.7.190]) by lhrrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id BHT58711; Thu, 31 Jul 2014 03:46:03 +0000 (GMT) Received: from SZXEMA401-HUB.china.huawei.com (10.82.72.33) by lhreml401-hub.china.huawei.com (10.201.5.240) with Microsoft SMTP Server (TLS) id 14.3.158.1; Thu, 31 Jul 2014 04:46:02 +0100 Received: from SZXEMA510-MBX.china.huawei.com ([169.254.3.190]) by SZXEMA401-HUB.china.huawei.com ([10.82.72.33]) with mapi id 14.03.0158.001; Thu, 31 Jul 2014 11:45:57 +0800 From: Mach Chen To: "Sami Boutros (sboutros)" Thread-Topic: RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt Thread-Index: Ac9MiA8kPZwsDe8nRuKlfe9UUOMhxJu5z3cAmvn8hjA= Date: Thu, 31 Jul 2014 03:45:56 +0000 Message-ID: References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> In-Reply-To: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> Accept-Language: en-US, zh-CN Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.111.97.72] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/yha2iPPmBS0n7CQr_3PZwYp0sbo Cc: "rtg-dir@ietf.org" , "mpls@ietf.org" , "draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org" , "rtg-ads@tools.ietf.org" Subject: Re: [mpls] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 03:46:09 -0000 Hi Sami, Sorry for missing your last reply. Thanks for considering my comments, and it resolved my comments. Best regards, Mach > -----Original Message----- > From: Sami Boutros (sboutros) [mailto:sboutros@cisco.com] > Sent: Thursday, July 31, 2014 3:44 AM > To: Mach Chen > Cc: rtg-ads@tools.ietf.org; rtg-dir@ietf.org; mpls@ietf.org; > draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; Loa Andersson > Subject: Re: RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt >=20 > Resending.. >=20 > On May 15, 2014, at 9:20 PM, Sami Boutros (sboutros) wrote: >=20 > >> > >> Minor Issues: > >> > >> 1. Since the TTL TLV is defined for both MS-PW and bidirectional > >> co-routed LSP, it should be better to explicitly state this in the abs= tract section. > >> > > > > Sami: Sure will do. > > > >> 2. "LSP-Ping echo request", "LSP-Ping request", "MPLS echo request", > >> "echo request" and "request" are interchangeably used in the draft, > >> it's better to unify the usage of it to "MPLS echo request" (to align > >> with the usage in RFC4379). For "echo reply", "bidirectional > >> co-routed LSP", they have the similar issue. > >> > > > > Sami: Ok, will fix that. > > > >> 3.Section 3.1 > >> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > >> | Value | Reserved | Flags | > >> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > >> > >> For the TTL TLV, the value filed should include the "value", > >> "Reserved" and "Flags", so it's better to change the "Value" field to > >> "TTL" field hence to reduce the confusion. > >> > > > > Sami: Sure. > > > >> 4. Section 3.2 > >> "This TLV shall be included in the echo request by the originator of > >> request. The use of this TLV is optional. If a receiver does not > >> understand the TTL TLV, it will simply ignore the TLV (Type value of > >> TLV is assumed to be in the range of optional TLV's which SHOULD be > >> ignored if an implementation does not support or understand them). In > >> the absence of TTL TLV or if TTL TLV is ignored by a receiver, the > >> determination of the TTL value used in the MPLS label on the echo > >> reply is beyond the scope of this document." > >> > >> What's your mean of "beyond the scope of this document" here? Is it > >> to apply the procedures defined in RFC4379 or just let it to the > >> implementation?I guess you assume to apply the definition in RFC4379, > > > > Sami: It is out of scope of this document, but for sure procedure in 43= 79 apply. > >> if > > > >> so, the TTL of the MPLS label will be more probably set to 255, means > >> the echo reply will be sent to the ingress of the MS-PW or LSP. I am > >> not sure whether this is the right procedure, it seems a security > >> issue. IMHO, it does not make any sense to expect the receiver to > >> send echo reply in this situation, and even sent, the initiator will > >> not receive the reply. The safer way is to drop the whole echo request= and > record an error log. > > > > > > Sami: > > > > We are not saying the receiver must send a reply, however if he does > > the reply may be received by the ingress node which might be the wrong > > node, since the receiver may not set the TTL properly on the reply, > > keep in mind that this is a receiver with an old implementation and the= TLV is > optional. > > > > Please refer to the security section for your security concern. > > > > Sami: > > > > > >> > >> 5. Section 3.2 > >> > >> "In other words, if the value of the TTL provided by this TLV does > >> not match the TTL determined by other means, such as Switching Point > >> TLV in MS-PW, then TTL TLV must be used." > >> Here, it implies that the receiver has to perform TTL matching > >> process, since how to set the TTL is independent of such matching, > >> seems this sentence is redundant and confusion. > >> > > > > Sami: Are you familiar with the switching point TLV? and what it includ= es? > > > >> 6. Section 4. > >> > >> "...The value field of the TTL TLV and the TTL field of the MPLS > >> label are set to 2," > >> > >> I guess that the MPLS Label is the PW label, right? It's better to > >> add more text to make this more explicit. In addition, how to set the > >> TTL value of the tunnel Label? 255 or any other value? > >> > > > > Sami: The tunnel label TTL is irrelevant here, however we will make it = explicit > that this is a PW label. > > > >> 5. Section 4.1. Traceroute mode > >> "In the traceroute mode TTL value in the TLV is successively set to > >> 1, 2, and so on. This is similar to the TTL values used for the > >> label set on the packet." > >> IMHO, some text may be needed to clarify which "FEC" should be > >> carried, especially for MS-PW trace. Since in Section 4.0, the > >> example says the FEC of segment C-D should be carried, does it mean > >> the FEC of last PW Segment of the segment under test should be > >> carried or the FEC will vary when TTL changed. For example, when > >> perform segment trace (e.g., to trace B-D segment), when TTL is 1, whi= ch FEC > should be carried? > > > > Sami: > > We are not here redefining a trace route for a MS-PW, we are describin= g how > our extensions will apply. > > Sami: > > > >> > >> 6. Section 4.2. Error scenario > >> For this scenario, do you need to define some error codes here? > > > > Sami: > > The section describe how to handle the error scenario, there is no need= for an > error code. > > Sami: > > > >> > >> 7. For MS-PW trace, seems that you assume the tunnel is pipe mode, if > >> so, it should be explicitly stated. If not, you should define how the > >> MS-PW trace works (given that the tunnels in both directions may span > >> different hops). > > > > Sami: > > Not sure I get the concern? Again we are not re-defining how MS-PW trac= e > work. > > > > Thanks, > > > > Sami > >> > >> Nits: > >> > >> 1. Please check the text for acronyms that have not been expanded in > >> their first use. > >> > >> 2. I run the idnits tool and found the following nits, please check > >> and fix. > >> (See RFCs 3967 and 4897 for information about using normative > >> references > >> to lower-maturity documents in RFCs) > >> > >> -- Looks like a reference, but probably isn't: 'RFC2119' on line 121 > >> > >> -- Looks like a reference, but probably isn't: 'RFC4379' on line 258 > >> > >> =3D=3D Unused Reference: '1' is defined on line 284, but no explicit > >> reference > >> was found in the text > >> > >> =3D=3D Unused Reference: '2' is defined on line 287, but no explicit > >> reference > >> was found in the text > >> > >> =3D=3D Unused Reference: '3' is defined on line 291, but no explicit > >> reference > >> was found in the text > >> > >> 3. Section 3.2, > >> 3.1 first para first sentence > >> s/shall/SHALL > >> 3.2 last para, the last second sentence s/must/MUST > >> > >> 4. The draft quotes the MS-PW and bidirectional co-routed LSP > >> concept, it's better to add related references to this document. > >> > >> > >> Best regards, > >> Mach > >> > >> > > From nobody Wed Jul 30 21:00:05 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 4A89D1A0123; Wed, 30 Jul 2014 21:00:01 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.202 X-Spam-Level: X-Spam-Status: No, score=-4.202 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id cuzf_6QB6IXY; Wed, 30 Jul 2014 20:59:58 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 83F111A00AD; Wed, 30 Jul 2014 20:59:57 -0700 (PDT) Received: from 172.18.7.190 (EHLO lhreml401-hub.china.huawei.com) ([172.18.7.190]) by lhrrg01-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id BKS89136; Thu, 31 Jul 2014 03:59:56 +0000 (GMT) Received: from SZXEMA410-HUB.china.huawei.com (10.82.72.42) by lhreml401-hub.china.huawei.com (10.201.5.240) with Microsoft SMTP Server (TLS) id 14.3.158.1; Thu, 31 Jul 2014 04:59:54 +0100 Received: from SZXEMA510-MBX.china.huawei.com ([169.254.3.190]) by SZXEMA410-HUB.china.huawei.com ([10.82.72.42]) with mapi id 14.03.0158.001; Thu, 31 Jul 2014 11:59:50 +0800 From: Mach Chen To: "Shah, Himanshu" , "Sami Boutros (sboutros)" Thread-Topic: RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt Thread-Index: Ac9MiA8kPZwsDe8nRuKlfe9UUOMhxJu5z3cA5QUyjQD//yu1sA== Date: Thu, 31 Jul 2014 03:59:49 +0000 Message-ID: References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> In-Reply-To: <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> Accept-Language: en-US, zh-CN Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.111.97.72] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/xzuwcYVgDHJjiIHNHIa_gJtFlic Cc: "rtg-dir@ietf.org" , "draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org" , "rtg-ads@tools.ietf.org" , "mpls@ietf.org" Subject: Re: [mpls] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 04:00:01 -0000 Hi Himanshu, I just rechecked my mailbox found that I sent out my comments on March 31, = 2014, and received Sami's reply on May 15 and the reply was wrongly filtere= d into the Junk email folder, sorry for that :-) Best regards, Mach > -----Original Message----- > From: Shah, Himanshu [mailto:hshah@ciena.com] > Sent: Thursday, July 31, 2014 7:15 AM > To: Sami Boutros (sboutros); Mach Chen > Cc: rtg-dir@ietf.org; mpls@ietf.org; > draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; rtg-ads@tools.ietf.o= rg > Subject: RE: RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt >=20 > This draft fills a major shortcoming of the VCCV ping over MS-PW (especia= lly if > reply mode is in-band). > I am not sure why this draft is stuck (i.e. taking too long to go through= ). >=20 > Is there a provisional IANA assignment for the TTL TLV type value? >=20 > Thanks, > himanshu >=20 > -----Original Message----- > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Sami Boutros > (sboutros) > Sent: Wednesday, July 30, 2014 3:44 PM > To: Mach Chen > Cc: rtg-dir@ietf.org; mpls@ietf.org; > draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; rtg-ads@tools.ietf.o= rg > Subject: Re: [mpls] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.tx= t >=20 > Resending.. >=20 > On May 15, 2014, at 9:20 PM, Sami Boutros (sboutros) wrote: >=20 > >> > >> Minor Issues: > >> > >> 1. Since the TTL TLV is defined for both MS-PW and bidirectional > >> co-routed LSP, it should be better to explicitly state this in the abs= tract section. > >> > > > > Sami: Sure will do. > > > >> 2. "LSP-Ping echo request", "LSP-Ping request", "MPLS echo request", > >> "echo request" and "request" are interchangeably used in the draft, > >> it's better to unify the usage of it to "MPLS echo request" (to align > >> with the usage in RFC4379). For "echo reply", "bidirectional > >> co-routed LSP", they have the similar issue. > >> > > > > Sami: Ok, will fix that. > > > >> 3.Section 3.1 > >> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > >> | Value | Reserved | Flags | > >> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > >> > >> For the TTL TLV, the value filed should include the "value", > >> "Reserved" and "Flags", so it's better to change the "Value" field to > >> "TTL" field hence to reduce the confusion. > >> > > > > Sami: Sure. > > > >> 4. Section 3.2 > >> "This TLV shall be included in the echo request by the originator of > >> request. The use of this TLV is optional. If a receiver does not > >> understand the TTL TLV, it will simply ignore the TLV (Type value of > >> TLV is assumed to be in the range of optional TLV's which SHOULD be > >> ignored if an implementation does not support or understand them). In > >> the absence of TTL TLV or if TTL TLV is ignored by a receiver, the > >> determination of the TTL value used in the MPLS label on the echo > >> reply is beyond the scope of this document." > >> > >> What's your mean of "beyond the scope of this document" here? Is it > >> to apply the procedures defined in RFC4379 or just let it to the > >> implementation?I guess you assume to apply the definition in RFC4379, > > > > Sami: It is out of scope of this document, but for sure procedure in 43= 79 apply. > >> if > > > >> so, the TTL of the MPLS label will be more probably set to 255, means > >> the echo reply will be sent to the ingress of the MS-PW or LSP. I am > >> not sure whether this is the right procedure, it seems a security > >> issue. IMHO, it does not make any sense to expect the receiver to > >> send echo reply in this situation, and even sent, the initiator will > >> not receive the reply. The safer way is to drop the whole echo request= and > record an error log. > > > > > > Sami: > > > > We are not saying the receiver must send a reply, however if he does > > the reply may be received by the ingress node which might be the wrong > > node, since the receiver may not set the TTL properly on the reply, > > keep in mind that this is a receiver with an old implementation and the= TLV is > optional. > > > > Please refer to the security section for your security concern. > > > > Sami: > > > > > >> > >> 5. Section 3.2 > >> > >> "In other words, if the value of the TTL provided by this TLV does > >> not match the TTL determined by other means, such as Switching Point > >> TLV in MS-PW, then TTL TLV must be used." > >> Here, it implies that the receiver has to perform TTL matching > >> process, since how to set the TTL is independent of such matching, > >> seems this sentence is redundant and confusion. > >> > > > > Sami: Are you familiar with the switching point TLV? and what it includ= es? > > > >> 6. Section 4. > >> > >> "...The value field of the TTL TLV and the TTL field of the MPLS > >> label are set to 2," > >> > >> I guess that the MPLS Label is the PW label, right? It's better to > >> add more text to make this more explicit. In addition, how to set the > >> TTL value of the tunnel Label? 255 or any other value? > >> > > > > Sami: The tunnel label TTL is irrelevant here, however we will make it = explicit > that this is a PW label. > > > >> 5. Section 4.1. Traceroute mode > >> "In the traceroute mode TTL value in the TLV is successively set to > >> 1, 2, and so on. This is similar to the TTL values used for the > >> label set on the packet." > >> IMHO, some text may be needed to clarify which "FEC" should be > >> carried, especially for MS-PW trace. Since in Section 4.0, the > >> example says the FEC of segment C-D should be carried, does it mean > >> the FEC of last PW Segment of the segment under test should be > >> carried or the FEC will vary when TTL changed. For example, when > >> perform segment trace (e.g., to trace B-D segment), when TTL is 1, whi= ch FEC > should be carried? > > > > Sami: > > We are not here redefining a trace route for a MS-PW, we are describin= g how > our extensions will apply. > > Sami: > > > >> > >> 6. Section 4.2. Error scenario > >> For this scenario, do you need to define some error codes here? > > > > Sami: > > The section describe how to handle the error scenario, there is no need= for an > error code. > > Sami: > > > >> > >> 7. For MS-PW trace, seems that you assume the tunnel is pipe mode, if > >> so, it should be explicitly stated. If not, you should define how the > >> MS-PW trace works (given that the tunnels in both directions may span > >> different hops). > > > > Sami: > > Not sure I get the concern? Again we are not re-defining how MS-PW trac= e > work. > > > > Thanks, > > > > Sami > >> > >> Nits: > >> > >> 1. Please check the text for acronyms that have not been expanded in > >> their first use. > >> > >> 2. I run the idnits tool and found the following nits, please check > >> and fix. > >> (See RFCs 3967 and 4897 for information about using normative > >> references > >> to lower-maturity documents in RFCs) > >> > >> -- Looks like a reference, but probably isn't: 'RFC2119' on line 121 > >> > >> -- Looks like a reference, but probably isn't: 'RFC4379' on line 258 > >> > >> =3D=3D Unused Reference: '1' is defined on line 284, but no explicit > >> reference > >> was found in the text > >> > >> =3D=3D Unused Reference: '2' is defined on line 287, but no explicit > >> reference > >> was found in the text > >> > >> =3D=3D Unused Reference: '3' is defined on line 291, but no explicit > >> reference > >> was found in the text > >> > >> 3. Section 3.2, > >> 3.1 first para first sentence > >> s/shall/SHALL > >> 3.2 last para, the last second sentence s/must/MUST > >> > >> 4. The draft quotes the MS-PW and bidirectional co-routed LSP > >> concept, it's better to add related references to this document. > >> > >> > >> Best regards, > >> Mach > >> > >> > > >=20 > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls From nobody Thu Jul 31 05:08:16 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A4E7B1A854B; Thu, 31 Jul 2014 05:07:59 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id o-o8ZUyWQGbY; Thu, 31 Jul 2014 05:07:52 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id AD5861A0B13; Thu, 31 Jul 2014 05:07:51 -0700 (PDT) Received: from [192.168.1.133] (81-236-221-144-no93.tbcn.telia.com [81.236.221.144]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id C44171802B88; Thu, 31 Jul 2014 14:07:49 +0200 (CEST) Message-ID: <53DA3194.4040306@pi.nu> Date: Thu, 31 Jul 2014 14:07:48 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "Shah, Himanshu" , "Sami Boutros (sboutros)" , Mach Chen References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> In-Reply-To: <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/ybTXDGc2Rw_3FGjrj1cLKYqRcIk Cc: "rtg-dir@ietf.org" , "draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org" , "mpls@ietf.org" , "rtg-ads@tools.ietf.org" Subject: Re: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 12:08:00 -0000 Himanshu, A request for early allocation need to come from the authors, to wg-chairs and ADs. The draft is through IETF Last call and has been updated, given that ADrian is comfortable it will be on the IESG agenda shortly. IANA has reviewed it and are OK. Normally I would not ask for early allocation this late in the process. /Loa On 2014-07-31 01:15, Shah, Himanshu wrote: > This draft fills a major shortcoming of the VCCV ping over MS-PW (especially if reply mode is in-band). > I am not sure why this draft is stuck (i.e. taking too long to go through). > > Is there a provisional IANA assignment for the TTL TLV type value? > > Thanks, > himanshu > > -----Original Message----- > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Sami Boutros (sboutros) > Sent: Wednesday, July 30, 2014 3:44 PM > To: Mach Chen > Cc: rtg-dir@ietf.org; mpls@ietf.org; draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; rtg-ads@tools.ietf.org > Subject: Re: [mpls] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt > > Resending.. > > On May 15, 2014, at 9:20 PM, Sami Boutros (sboutros) wrote: > >>> >>> Minor Issues: >>> >>> 1. Since the TTL TLV is defined for both MS-PW and bidirectional >>> co-routed LSP, it should be better to explicitly state this in the abstract section. >>> >> >> Sami: Sure will do. >> >>> 2. "LSP-Ping echo request", "LSP-Ping request", "MPLS echo request", >>> "echo request" and "request" are interchangeably used in the draft, >>> it's better to unify the usage of it to "MPLS echo request" (to align >>> with the usage in RFC4379). For "echo reply", "bidirectional >>> co-routed LSP", they have the similar issue. >>> >> >> Sami: Ok, will fix that. >> >>> 3.Section 3.1 >>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >>> | Value | Reserved | Flags | >>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >>> >>> For the TTL TLV, the value filed should include the "value", >>> "Reserved" and "Flags", so it's better to change the "Value" field to >>> "TTL" field hence to reduce the confusion. >>> >> >> Sami: Sure. >> >>> 4. Section 3.2 >>> "This TLV shall be included in the echo request by the originator of >>> request. The use of this TLV is optional. If a receiver does not >>> understand the TTL TLV, it will simply ignore the TLV (Type value of >>> TLV is assumed to be in the range of optional TLV's which SHOULD be >>> ignored if an implementation does not support or understand them). In >>> the absence of TTL TLV or if TTL TLV is ignored by a receiver, the >>> determination of the TTL value used in the MPLS label on the echo >>> reply is beyond the scope of this document." >>> >>> What's your mean of "beyond the scope of this document" here? Is it >>> to apply the procedures defined in RFC4379 or just let it to the >>> implementation?I guess you assume to apply the definition in RFC4379, >> >> Sami: It is out of scope of this document, but for sure procedure in 4379 apply. >>> if >> >>> so, the TTL of the MPLS label will be more probably set to 255, means >>> the echo reply will be sent to the ingress of the MS-PW or LSP. I am >>> not sure whether this is the right procedure, it seems a security >>> issue. IMHO, it does not make any sense to expect the receiver to >>> send echo reply in this situation, and even sent, the initiator will >>> not receive the reply. The safer way is to drop the whole echo request and record an error log. >> >> >> Sami: >> >> We are not saying the receiver must send a reply, however if he does >> the reply may be received by the ingress node which might be the wrong >> node, since the receiver may not set the TTL properly on the reply, >> keep in mind that this is a receiver with an old implementation and the TLV is optional. >> >> Please refer to the security section for your security concern. >> >> Sami: >> >> >>> >>> 5. Section 3.2 >>> >>> "In other words, if the value of the TTL provided by this TLV does >>> not match the TTL determined by other means, such as Switching Point >>> TLV in MS-PW, then TTL TLV must be used." >>> Here, it implies that the receiver has to perform TTL matching >>> process, since how to set the TTL is independent of such matching, >>> seems this sentence is redundant and confusion. >>> >> >> Sami: Are you familiar with the switching point TLV? and what it includes? >> >>> 6. Section 4. >>> >>> "...The value field of the TTL TLV and the TTL field of the MPLS >>> label are set to 2," >>> >>> I guess that the MPLS Label is the PW label, right? It's better to >>> add more text to make this more explicit. In addition, how to set the >>> TTL value of the tunnel Label? 255 or any other value? >>> >> >> Sami: The tunnel label TTL is irrelevant here, however we will make it explicit that this is a PW label. >> >>> 5. Section 4.1. Traceroute mode >>> "In the traceroute mode TTL value in the TLV is successively set to >>> 1, 2, and so on. This is similar to the TTL values used for the >>> label set on the packet." >>> IMHO, some text may be needed to clarify which "FEC" should be >>> carried, especially for MS-PW trace. Since in Section 4.0, the >>> example says the FEC of segment C-D should be carried, does it mean >>> the FEC of last PW Segment of the segment under test should be >>> carried or the FEC will vary when TTL changed. For example, when >>> perform segment trace (e.g., to trace B-D segment), when TTL is 1, which FEC should be carried? >> >> Sami: >> We are not here redefining a trace route for a MS-PW, we are describing how our extensions will apply. >> Sami: >> >>> >>> 6. Section 4.2. Error scenario >>> For this scenario, do you need to define some error codes here? >> >> Sami: >> The section describe how to handle the error scenario, there is no need for an error code. >> Sami: >> >>> >>> 7. For MS-PW trace, seems that you assume the tunnel is pipe mode, if >>> so, it should be explicitly stated. If not, you should define how the >>> MS-PW trace works (given that the tunnels in both directions may span >>> different hops). >> >> Sami: >> Not sure I get the concern? Again we are not re-defining how MS-PW trace work. >> >> Thanks, >> >> Sami >>> >>> Nits: >>> >>> 1. Please check the text for acronyms that have not been expanded in >>> their first use. >>> >>> 2. I run the idnits tool and found the following nits, please check >>> and fix. >>> (See RFCs 3967 and 4897 for information about using normative >>> references >>> to lower-maturity documents in RFCs) >>> >>> -- Looks like a reference, but probably isn't: 'RFC2119' on line 121 >>> >>> -- Looks like a reference, but probably isn't: 'RFC4379' on line 258 >>> >>> == Unused Reference: '1' is defined on line 284, but no explicit >>> reference >>> was found in the text >>> >>> == Unused Reference: '2' is defined on line 287, but no explicit >>> reference >>> was found in the text >>> >>> == Unused Reference: '3' is defined on line 291, but no explicit >>> reference >>> was found in the text >>> >>> 3. Section 3.2, >>> 3.1 first para first sentence >>> s/shall/SHALL >>> 3.2 last para, the last second sentence s/must/MUST >>> >>> 4. The draft quotes the MS-PW and bidirectional co-routed LSP >>> concept, it's better to add related references to this document. >>> >>> >>> Best regards, >>> Mach >>> >>> >> > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Thu Jul 31 06:15:08 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 65ED71B27E3; Thu, 31 Jul 2014 06:14:59 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.267 X-Spam-Level: X-Spam-Status: No, score=-2.267 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, IP_NOT_FRIENDLY=0.334, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6A_uG_BnJIar; Thu, 31 Jul 2014 06:14:52 -0700 (PDT) Received: from mx0a-00103a01.pphosted.com (mx0a-00103a01.pphosted.com [67.231.144.234]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 8561F1B27D9; Thu, 31 Jul 2014 06:14:52 -0700 (PDT) Received: from pps.filterd (m0000419.ppops.net [127.0.0.1]) by mx0a-00103a01.pphosted.com (8.14.5/8.14.5) with SMTP id s6VDAGv1025342; Thu, 31 Jul 2014 09:14:42 -0400 Received: from vawvcgsie2k1301.ciena.com (LIN1-118-36-35.ciena.com [63.118.36.35]) by mx0a-00103a01.pphosted.com with ESMTP id 1nfnvjg5d7-1 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=NOT); Thu, 31 Jul 2014 09:14:42 -0400 Received: from ONWVEXCHHT01.ciena.com (10.128.6.16) by VAWVCGSIE2K1301.ciena.com (10.4.62.15) with Microsoft SMTP Server (TLS) id 15.0.847.32; Thu, 31 Jul 2014 09:14:40 -0400 Received: from ONWVEXCHMB04.ciena.com ([::1]) by ONWVEXCHHT01.ciena.com ([::1]) with mapi; Thu, 31 Jul 2014 09:14:40 -0400 From: "Shah, Himanshu" To: Loa Andersson , "Sami Boutros (sboutros)" , Mach Chen Date: Thu, 31 Jul 2014 09:14:38 -0400 Thread-Topic: [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt Thread-Index: Ac+suCSYSSTl0yCuQe6sjT6oD+tJGgACLZdQ Message-ID: <40746B2300A8FC4AB04EE722A593182B76F4F335@ONWVEXCHMB04.ciena.com> References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> <53DA3194.4040306@pi.nu> In-Reply-To: <53DA3194.4040306@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US x-tm-as-product-ver: SMEX-10.0.0.1412-7.000.1014-20850.007 x-tm-as-result: No--53.144800-8.000000-31 x-tm-as-user-approved-sender: No x-tm-as-user-blocked-sender: No Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.12.52, 1.0.14, 0.0.0000 definitions=2014-07-31_04:2014-07-30,2014-07-31,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=7.0.1-1402240000 definitions=main-1407310162 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/k_8YH-MWE1AnkvqU3_fes96QKys Cc: "rtg-dir@ietf.org" , "draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org" , "mpls@ietf.org" , "rtg-ads@tools.ietf.org" Subject: Re: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 13:14:59 -0000 Thanks Loa. Early allocation request could have been made much earlier, but that is wat= er under the bridge now. I would still favor requesting for provisional IANA code allocation now. This would allow interoperability of the ongoing implementations. /himanshu -----Original Message----- From: Loa Andersson [mailto:loa@pi.nu]=20 Sent: Thursday, July 31, 2014 8:08 AM To: Shah, Himanshu; Sami Boutros (sboutros); Mach Chen Cc: rtg-dir@ietf.org; draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; = rtg-ads@tools.ietf.org; mpls@ietf.org Subject: Re: [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.t= xt Himanshu, A request for early allocation need to come from the authors, to wg-chairs = and ADs. The draft is through IETF Last call and has been updated, given that ADrian= is comfortable it will be on the IESG agenda shortly. IANA has reviewed it and are OK. Normally I would not ask for early allocation this late in the process. /Loa On 2014-07-31 01:15, Shah, Himanshu wrote: > This draft fills a major shortcoming of the VCCV ping over MS-PW (especia= lly if reply mode is in-band). > I am not sure why this draft is stuck (i.e. taking too long to go through= ). > > Is there a provisional IANA assignment for the TTL TLV type value? > > Thanks, > himanshu > > -----Original Message----- > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Sami Boutros=20 > (sboutros) > Sent: Wednesday, July 30, 2014 3:44 PM > To: Mach Chen > Cc: rtg-dir@ietf.org; mpls@ietf.org;=20 > draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org;=20 > rtg-ads@tools.ietf.org > Subject: Re: [mpls] RtgDir review:=20 > draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt > > Resending.. > > On May 15, 2014, at 9:20 PM, Sami Boutros (sboutros) wrote: > >>> >>> Minor Issues: >>> >>> 1. Since the TTL TLV is defined for both MS-PW and bidirectional=20 >>> co-routed LSP, it should be better to explicitly state this in the abst= ract section. >>> >> >> Sami: Sure will do. >> >>> 2. "LSP-Ping echo request", "LSP-Ping request", "MPLS echo request",=20 >>> "echo request" and "request" are interchangeably used in the draft,=20 >>> it's better to unify the usage of it to "MPLS echo request" (to=20 >>> align with the usage in RFC4379). For "echo reply", "bidirectional=20 >>> co-routed LSP", they have the similar issue. >>> >> >> Sami: Ok, will fix that. >> >>> 3.Section 3.1 >>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >>> | Value | Reserved | Flags | >>> =20 >>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >>> >>> For the TTL TLV, the value filed should include the "value",=20 >>> "Reserved" and "Flags", so it's better to change the "Value" field=20 >>> to "TTL" field hence to reduce the confusion. >>> >> >> Sami: Sure. >> >>> 4. Section 3.2 >>> "This TLV shall be included in the echo request by the originator of=20 >>> request. The use of this TLV is optional. If a receiver does not=20 >>> understand the TTL TLV, it will simply ignore the TLV (Type value of=20 >>> TLV is assumed to be in the range of optional TLV's which SHOULD be=20 >>> ignored if an implementation does not support or understand them).=20 >>> In the absence of TTL TLV or if TTL TLV is ignored by a receiver,=20 >>> the determination of the TTL value used in the MPLS label on the=20 >>> echo reply is beyond the scope of this document." >>> >>> What's your mean of "beyond the scope of this document" here? Is it=20 >>> to apply the procedures defined in RFC4379 or just let it to the=20 >>> implementation?I guess you assume to apply the definition in=20 >>> RFC4379, >> >> Sami: It is out of scope of this document, but for sure procedure in 437= 9 apply. >>> if >> >>> so, the TTL of the MPLS label will be more probably set to 255,=20 >>> means the echo reply will be sent to the ingress of the MS-PW or=20 >>> LSP. I am not sure whether this is the right procedure, it seems a=20 >>> security issue. IMHO, it does not make any sense to expect the=20 >>> receiver to send echo reply in this situation, and even sent, the=20 >>> initiator will not receive the reply. The safer way is to drop the whol= e echo request and record an error log. >> >> >> Sami: >> >> We are not saying the receiver must send a reply, however if he does=20 >> the reply may be received by the ingress node which might be the=20 >> wrong node, since the receiver may not set the TTL properly on the=20 >> reply, keep in mind that this is a receiver with an old implementation a= nd the TLV is optional. >> >> Please refer to the security section for your security concern. >> >> Sami: >> >> >>> >>> 5. Section 3.2 >>> >>> "In other words, if the value of the TTL provided by this TLV does=20 >>> not match the TTL determined by other means, such as Switching=20 >>> Point TLV in MS-PW, then TTL TLV must be used." >>> Here, it implies that the receiver has to perform TTL matching=20 >>> process, since how to set the TTL is independent of such matching,=20 >>> seems this sentence is redundant and confusion. >>> >> >> Sami: Are you familiar with the switching point TLV? and what it include= s? >> >>> 6. Section 4. >>> >>> "...The value field of the TTL TLV and the TTL field of the MPLS=20 >>> label are set to 2," >>> >>> I guess that the MPLS Label is the PW label, right? It's better to=20 >>> add more text to make this more explicit. In addition, how to set=20 >>> the TTL value of the tunnel Label? 255 or any other value? >>> >> >> Sami: The tunnel label TTL is irrelevant here, however we will make it e= xplicit that this is a PW label. >> >>> 5. Section 4.1. Traceroute mode >>> "In the traceroute mode TTL value in the TLV is successively set=20 >>> to 1, 2, and so on. This is similar to the TTL values used for the=20 >>> label set on the packet." >>> IMHO, some text may be needed to clarify which "FEC" should be=20 >>> carried, especially for MS-PW trace. Since in Section 4.0, the=20 >>> example says the FEC of segment C-D should be carried, does it mean=20 >>> the FEC of last PW Segment of the segment under test should be=20 >>> carried or the FEC will vary when TTL changed. For example, when=20 >>> perform segment trace (e.g., to trace B-D segment), when TTL is 1, whic= h FEC should be carried? >> >> Sami: >> We are not here redefining a trace route for a MS-PW, we are describing= how our extensions will apply. >> Sami: >> >>> >>> 6. Section 4.2. Error scenario >>> For this scenario, do you need to define some error codes here? >> >> Sami: >> The section describe how to handle the error scenario, there is no need = for an error code. >> Sami: >> >>> >>> 7. For MS-PW trace, seems that you assume the tunnel is pipe mode,=20 >>> if so, it should be explicitly stated. If not, you should define how=20 >>> the MS-PW trace works (given that the tunnels in both directions may=20 >>> span different hops). >> >> Sami: >> Not sure I get the concern? Again we are not re-defining how MS-PW trace= work. >> >> Thanks, >> >> Sami >>> >>> Nits: >>> >>> 1. Please check the text for acronyms that have not been expanded in=20 >>> their first use. >>> >>> 2. I run the idnits tool and found the following nits, please check=20 >>> and fix. >>> (See RFCs 3967 and 4897 for information about using normative=20 >>> references >>> to lower-maturity documents in RFCs) >>> >>> -- Looks like a reference, but probably isn't: 'RFC2119' on line 121 >>> >>> -- Looks like a reference, but probably isn't: 'RFC4379' on line 258 >>> >>> =3D=3D Unused Reference: '1' is defined on line 284, but no explicit=20 >>> reference >>> was found in the text >>> >>> =3D=3D Unused Reference: '2' is defined on line 287, but no explicit=20 >>> reference >>> was found in the text >>> >>> =3D=3D Unused Reference: '3' is defined on line 291, but no explicit=20 >>> reference >>> was found in the text >>> >>> 3. Section 3.2, >>> 3.1 first para first sentence >>> s/shall/SHALL >>> 3.2 last para, the last second sentence s/must/MUST >>> >>> 4. The draft quotes the MS-PW and bidirectional co-routed LSP=20 >>> concept, it's better to add related references to this document. >>> >>> >>> Best regards, >>> Mach >>> >>> >> > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls > --=20 Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Thu Jul 31 06:16:04 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D30511A0012; Thu, 31 Jul 2014 06:15:58 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -114.502 X-Spam-Level: X-Spam-Status: No, score=-114.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id BwU_zhAT8gBy; Thu, 31 Jul 2014 06:15:50 -0700 (PDT) Received: from alln-iport-7.cisco.com (alln-iport-7.cisco.com [173.37.142.94]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id CB78C1B27CD; Thu, 31 Jul 2014 06:15:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=9712; q=dns/txt; s=iport; t=1406812549; x=1408022149; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=3zalv1oSIN2Si4r3u2+ZFhPPWgC9RQuPdL/sUDhE0W8=; b=MNEh1QxIVY+W+eGbohxhnLACWKJJgp7Ue2ubY2RtXW6EG8Ba9DNV5pHA qVT/krjwC6TYhSkQ/RpNzaTJ1I6VWHQZfVWmdxvh6Y36QBGxkqshFJf/b QrxgzamzlhcecsA74YCJXzBXns7V0vAToN4f+7nsS5ULimBKffzci8AQ0 Q=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Ai0FAD5B2lOtJV2Y/2dsb2JhbABZgmokUlcEywkZCodLAYEGFneEAwEBAQECAQEBATctBAMLDAICAgEIEQQBAQEKFAkHGwwLFAkIAgQBDQUIiDIIAQy9AxMEBIl7hGsRAR8xBwaDKYEbBY5loVKDSWwBgQs5 X-IronPort-AV: E=Sophos;i="5.01,772,1400025600"; d="scan'208";a="65477076" Received: from rcdn-core-1.cisco.com ([173.37.93.152]) by alln-iport-7.cisco.com with ESMTP; 31 Jul 2014 13:15:40 +0000 Received: from xhc-rcd-x08.cisco.com (xhc-rcd-x08.cisco.com [173.37.183.82]) by rcdn-core-1.cisco.com (8.14.5/8.14.5) with ESMTP id s6VDFejq016199 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Thu, 31 Jul 2014 13:15:40 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-rcd-x08.cisco.com ([173.37.183.82]) with mapi id 14.03.0123.003; Thu, 31 Jul 2014 08:15:40 -0500 From: "Nobo Akiya (nobo)" To: Loa Andersson , "Shah, Himanshu" , "Sami Boutros (sboutros)" , Mach Chen Thread-Topic: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt Thread-Index: AQHPrLgh361wuvGpdEGeup7tEEixMpu6J0Kg Date: Thu, 31 Jul 2014 13:15:40 +0000 Message-ID: References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> <53DA3194.4040306@pi.nu> In-Reply-To: <53DA3194.4040306@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [161.44.212.70] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/xwlMDT3GTEmsxOvQfGtIWItycDk Cc: "rtg-dir@ietf.org" , "draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org" , "rtg-ads@tools.ietf.org" , "mpls@ietf.org" Subject: Re: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 13:15:59 -0000 Hi Loa, Authors, The code base which I'm familiar with already have shipped implementation o= f the TTL TLV, and it appears that the Type=3D0x8001 is being used. I do not have the knowledge of why this value was used in this implementati= on without doing early IANA allocation for the TTL TLV code point. If usage of Type=3D0x8001 as the TTL TLV does not conflict with any other i= mplementations out there, is it possible to ask IANA to assign this value (= 0x8001) when the document progresses? My apologies for causing extra burden on the authors, the Shepherd and the = ADs. But I truly hope that this request can be accommodated. Thanks! -Nobo > -----Original Message----- > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Loa Andersson > Sent: Thursday, July 31, 2014 8:08 AM > To: Shah, Himanshu; Sami Boutros (sboutros); Mach Chen > Cc: rtg-dir@ietf.org; draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org= ; > mpls@ietf.org; rtg-ads@tools.ietf.org > Subject: Re: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl= -tlv- > 07.txt >=20 > Himanshu, >=20 > A request for early allocation need to come from the authors, to wg-chair= s > and ADs. >=20 > The draft is through IETF Last call and has been updated, given that ADri= an is > comfortable it will be on the IESG agenda shortly. >=20 > IANA has reviewed it and are OK. >=20 > Normally I would not ask for early allocation this late in the process. >=20 > /Loa >=20 > On 2014-07-31 01:15, Shah, Himanshu wrote: > > This draft fills a major shortcoming of the VCCV ping over MS-PW > (especially if reply mode is in-band). > > I am not sure why this draft is stuck (i.e. taking too long to go throu= gh). > > > > Is there a provisional IANA assignment for the TTL TLV type value? > > > > Thanks, > > himanshu > > > > -----Original Message----- > > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Sami Boutros > > (sboutros) > > Sent: Wednesday, July 30, 2014 3:44 PM > > To: Mach Chen > > Cc: rtg-dir@ietf.org; mpls@ietf.org; > > draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; > > rtg-ads@tools.ietf.org > > Subject: Re: [mpls] RtgDir review: > > draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt > > > > Resending.. > > > > On May 15, 2014, at 9:20 PM, Sami Boutros (sboutros) wrote: > > > >>> > >>> Minor Issues: > >>> > >>> 1. Since the TTL TLV is defined for both MS-PW and bidirectional > >>> co-routed LSP, it should be better to explicitly state this in the ab= stract > section. > >>> > >> > >> Sami: Sure will do. > >> > >>> 2. "LSP-Ping echo request", "LSP-Ping request", "MPLS echo request", > >>> "echo request" and "request" are interchangeably used in the draft, > >>> it's better to unify the usage of it to "MPLS echo request" (to > >>> align with the usage in RFC4379). For "echo reply", "bidirectional > >>> co-routed LSP", they have the similar issue. > >>> > >> > >> Sami: Ok, will fix that. > >> > >>> 3.Section 3.1 > >>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= + > >>> | Value | Reserved | Flags | > >>> > >>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > >>> > >>> For the TTL TLV, the value filed should include the "value", > >>> "Reserved" and "Flags", so it's better to change the "Value" field > >>> to "TTL" field hence to reduce the confusion. > >>> > >> > >> Sami: Sure. > >> > >>> 4. Section 3.2 > >>> "This TLV shall be included in the echo request by the originator of > >>> request. The use of this TLV is optional. If a receiver does not > >>> understand the TTL TLV, it will simply ignore the TLV (Type value of > >>> TLV is assumed to be in the range of optional TLV's which SHOULD be > >>> ignored if an implementation does not support or understand them). > >>> In the absence of TTL TLV or if TTL TLV is ignored by a receiver, > >>> the determination of the TTL value used in the MPLS label on the > >>> echo reply is beyond the scope of this document." > >>> > >>> What's your mean of "beyond the scope of this document" here? Is it > >>> to apply the procedures defined in RFC4379 or just let it to the > >>> implementation?I guess you assume to apply the definition in > >>> RFC4379, > >> > >> Sami: It is out of scope of this document, but for sure procedure in 4= 379 > apply. > >>> if > >> > >>> so, the TTL of the MPLS label will be more probably set to 255, > >>> means the echo reply will be sent to the ingress of the MS-PW or > >>> LSP. I am not sure whether this is the right procedure, it seems a > >>> security issue. IMHO, it does not make any sense to expect the > >>> receiver to send echo reply in this situation, and even sent, the > >>> initiator will not receive the reply. The safer way is to drop the wh= ole > echo request and record an error log. > >> > >> > >> Sami: > >> > >> We are not saying the receiver must send a reply, however if he does > >> the reply may be received by the ingress node which might be the > >> wrong node, since the receiver may not set the TTL properly on the > >> reply, keep in mind that this is a receiver with an old implementation= and > the TLV is optional. > >> > >> Please refer to the security section for your security concern. > >> > >> Sami: > >> > >> > >>> > >>> 5. Section 3.2 > >>> > >>> "In other words, if the value of the TTL provided by this TLV does > >>> not match the TTL determined by other means, such as Switching > >>> Point TLV in MS-PW, then TTL TLV must be used." > >>> Here, it implies that the receiver has to perform TTL matching > >>> process, since how to set the TTL is independent of such matching, > >>> seems this sentence is redundant and confusion. > >>> > >> > >> Sami: Are you familiar with the switching point TLV? and what it > includes? > >> > >>> 6. Section 4. > >>> > >>> "...The value field of the TTL TLV and the TTL field of the MPLS > >>> label are set to 2," > >>> > >>> I guess that the MPLS Label is the PW label, right? It's better to > >>> add more text to make this more explicit. In addition, how to set > >>> the TTL value of the tunnel Label? 255 or any other value? > >>> > >> > >> Sami: The tunnel label TTL is irrelevant here, however we will make it > explicit that this is a PW label. > >> > >>> 5. Section 4.1. Traceroute mode > >>> "In the traceroute mode TTL value in the TLV is successively set > >>> to 1, 2, and so on. This is similar to the TTL values used for the > >>> label set on the packet." > >>> IMHO, some text may be needed to clarify which "FEC" should be > >>> carried, especially for MS-PW trace. Since in Section 4.0, the > >>> example says the FEC of segment C-D should be carried, does it mean > >>> the FEC of last PW Segment of the segment under test should be > >>> carried or the FEC will vary when TTL changed. For example, when > >>> perform segment trace (e.g., to trace B-D segment), when TTL is 1, wh= ich > FEC should be carried? > >> > >> Sami: > >> We are not here redefining a trace route for a MS-PW, we are describi= ng > how our extensions will apply. > >> Sami: > >> > >>> > >>> 6. Section 4.2. Error scenario > >>> For this scenario, do you need to define some error codes here? > >> > >> Sami: > >> The section describe how to handle the error scenario, there is no nee= d > for an error code. > >> Sami: > >> > >>> > >>> 7. For MS-PW trace, seems that you assume the tunnel is pipe mode, > >>> if so, it should be explicitly stated. If not, you should define how > >>> the MS-PW trace works (given that the tunnels in both directions may > >>> span different hops). > >> > >> Sami: > >> Not sure I get the concern? Again we are not re-defining how MS-PW > trace work. > >> > >> Thanks, > >> > >> Sami > >>> > >>> Nits: > >>> > >>> 1. Please check the text for acronyms that have not been expanded in > >>> their first use. > >>> > >>> 2. I run the idnits tool and found the following nits, please check > >>> and fix. > >>> (See RFCs 3967 and 4897 for information about using normative > >>> references > >>> to lower-maturity documents in RFCs) > >>> > >>> -- Looks like a reference, but probably isn't: 'RFC2119' on line 121 > >>> > >>> -- Looks like a reference, but probably isn't: 'RFC4379' on line 258 > >>> > >>> =3D=3D Unused Reference: '1' is defined on line 284, but no explicit > >>> reference > >>> was found in the text > >>> > >>> =3D=3D Unused Reference: '2' is defined on line 287, but no explicit > >>> reference > >>> was found in the text > >>> > >>> =3D=3D Unused Reference: '3' is defined on line 291, but no explicit > >>> reference > >>> was found in the text > >>> > >>> 3. Section 3.2, > >>> 3.1 first para first sentence > >>> s/shall/SHALL > >>> 3.2 last para, the last second sentence s/must/MUST > >>> > >>> 4. The draft quotes the MS-PW and bidirectional co-routed LSP > >>> concept, it's better to add related references to this document. > >>> > >>> > >>> Best regards, > >>> Mach > >>> > >>> > >> > > > > _______________________________________________ > > mpls mailing list > > mpls@ietf.org > > https://www.ietf.org/mailman/listinfo/mpls > > >=20 > -- >=20 >=20 > Loa Andersson email: loa@mail01.huawei.com > Senior MPLS Expert loa@pi.nu > Huawei Technologies (consultant) phone: +46 739 81 21 64 >=20 > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls From nobody Thu Jul 31 07:11:23 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D34EF1A0045; Thu, 31 Jul 2014 07:11:16 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.902 X-Spam-Level: X-Spam-Status: No, score=-1.902 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id m80yaWKByePd; Thu, 31 Jul 2014 07:11:12 -0700 (PDT) Received: from emea01-db3-obe.outbound.protection.outlook.com (mail-db3lrp0077.outbound.protection.outlook.com [213.199.154.77]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id AFF9F1B281E; Thu, 31 Jul 2014 07:11:11 -0700 (PDT) Received: from AM3PR03MB609.eurprd03.prod.outlook.com (10.242.109.149) by AM3PR03MB530.eurprd03.prod.outlook.com (10.242.109.154) with Microsoft SMTP Server (TLS) id 15.0.995.14; Thu, 31 Jul 2014 14:11:09 +0000 Received: from AM3PR03MB612.eurprd03.prod.outlook.com (10.242.110.144) by AM3PR03MB609.eurprd03.prod.outlook.com (10.242.109.149) with Microsoft SMTP Server (TLS) id 15.0.995.14; Thu, 31 Jul 2014 14:11:08 +0000 Received: from AM3PR03MB612.eurprd03.prod.outlook.com ([10.242.110.144]) by AM3PR03MB612.eurprd03.prod.outlook.com ([10.242.110.144]) with mapi id 15.00.0995.014; Thu, 31 Jul 2014 14:11:08 +0000 From: Alexander Vainshtein To: "Nobo Akiya (nobo)" Thread-Topic: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt Thread-Index: AQHPcL43MdQKFwuY10i9fAzq1cK1Rpu5z3cA///lHDCAANoHAIAAEvYAgAAOQSA= Date: Thu, 31 Jul 2014 14:11:07 +0000 Message-ID: <7adbcb851e224adbbd93416e5932b618@AM3PR03MB612.eurprd03.prod.outlook.com> References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> <53DA3194.4040306@pi.nu> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [147.234.56.21] x-microsoft-antispam: BCL:0;PCL:0;RULEID: x-forefront-prvs: 0289B6431E x-forefront-antispam-report: SFV:NSPM; SFS:(6009001)(13464003)(189002)(377424004)(377454003)(51704005)(24454002)(41574002)(252514010)(164054003)(199002)(87936001)(110136001)(54356999)(33646002)(20776003)(15975445006)(83322001)(83072002)(81342001)(50986999)(86362001)(4396001)(2656002)(93886003)(74316001)(101416001)(107046002)(19580405001)(85852003)(80022001)(76482001)(81542001)(106356001)(64706001)(66066001)(76576001)(95666004)(31966008)(74662001)(106116001)(79102001)(21056001)(76176999)(85306003)(46102001)(92566001)(74502001)(105586002)(77982001)(19580395003)(24736002)(108616003); DIR:OUT; SFP:; SCL:1; SRVR:AM3PR03MB609; H:AM3PR03MB612.eurprd03.prod.outlook.com; FPR:; MLV:sfv; PTR:InfoNoRecords; MX:1; LANG:en; Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Microsoft-Antispam: BCL:0;PCL:0;RULEID: X-OriginatorOrg: ecitele.com Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/VF8sPCtrrPjKzKw5vXAYzE2_50k Cc: "rtg-dir@ietf.org" , "mpls@ietf.org" , "Sami Boutros \(sboutros\)" , "rtg-ads@tools.ietf.org" , "draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org" Subject: Re: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 14:11:17 -0000 Nobo, and all, 0x8001 =3D 32769 falls in the "Unassigned" range of TLVs for LSP Ping. I th= ink that it has been considered as safe enough to use by the implementers. Somehow the relevant IANA registry does not provide any values for experime= ntal use. My 2c, Sasha=20 Email: Alexander.Vainshtein@ecitele.com Mobile: 054-9266302 > -----Original Message----- > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Nobo Akiya (nobo) > Sent: Thursday, July 31, 2014 4:16 PM > To: Loa Andersson; Shah, Himanshu; Sami Boutros (sboutros); Mach Chen > Cc: rtg-dir@ietf.org; draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org= ; rtg- > ads@tools.ietf.org; mpls@ietf.org > Subject: Re: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl= -tlv- > 07.txt >=20 > Hi Loa, Authors, >=20 > The code base which I'm familiar with already have shipped implementation > of the TTL TLV, and it appears that the Type=3D0x8001 is being used. >=20 > I do not have the knowledge of why this value was used in this > implementation without doing early IANA allocation for the TTL TLV code > point. >=20 > If usage of Type=3D0x8001 as the TTL TLV does not conflict with any other > implementations out there, is it possible to ask IANA to assign this valu= e > (0x8001) when the document progresses? >=20 > My apologies for causing extra burden on the authors, the Shepherd and th= e > ADs. >=20 > But I truly hope that this request can be accommodated. >=20 > Thanks! >=20 > -Nobo >=20 > > -----Original Message----- > > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Loa Andersson > > Sent: Thursday, July 31, 2014 8:08 AM > > To: Shah, Himanshu; Sami Boutros (sboutros); Mach Chen > > Cc: rtg-dir@ietf.org; > > draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; > > mpls@ietf.org; rtg-ads@tools.ietf.org > > Subject: Re: [mpls] [RTG-DIR] RtgDir review: > > draft-ietf-mpls-lsp-ping-ttl-tlv- 07.txt > > > > Himanshu, > > > > A request for early allocation need to come from the authors, to > > wg-chairs and ADs. > > > > The draft is through IETF Last call and has been updated, given that > > ADrian is comfortable it will be on the IESG agenda shortly. > > > > IANA has reviewed it and are OK. > > > > Normally I would not ask for early allocation this late in the process. > > > > /Loa > > > > On 2014-07-31 01:15, Shah, Himanshu wrote: > > > This draft fills a major shortcoming of the VCCV ping over MS-PW > > (especially if reply mode is in-band). > > > I am not sure why this draft is stuck (i.e. taking too long to go thr= ough). > > > > > > Is there a provisional IANA assignment for the TTL TLV type value? > > > > > > Thanks, > > > himanshu > > > > > > -----Original Message----- > > > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Sami Boutros > > > (sboutros) > > > Sent: Wednesday, July 30, 2014 3:44 PM > > > To: Mach Chen > > > Cc: rtg-dir@ietf.org; mpls@ietf.org; > > > draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; > > > rtg-ads@tools.ietf.org > > > Subject: Re: [mpls] RtgDir review: > > > draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt > > > > > > Resending.. > > > > > > On May 15, 2014, at 9:20 PM, Sami Boutros (sboutros) wrote: > > > > > >>> > > >>> Minor Issues: > > >>> > > >>> 1. Since the TTL TLV is defined for both MS-PW and bidirectional > > >>> co-routed LSP, it should be better to explicitly state this in the > > >>> abstract > > section. > > >>> > > >> > > >> Sami: Sure will do. > > >> > > >>> 2. "LSP-Ping echo request", "LSP-Ping request", "MPLS echo > > >>> request", "echo request" and "request" are interchangeably used in > > >>> the draft, it's better to unify the usage of it to "MPLS echo > > >>> request" (to align with the usage in RFC4379). For "echo reply", > > >>> "bidirectional co-routed LSP", they have the similar issue. > > >>> > > >> > > >> Sami: Ok, will fix that. > > >> > > >>> 3.Section 3.1 > > >>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= +- > + > > >>> | Value | Reserved | Flags | > > >>> > > >>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > > >>> > > >>> For the TTL TLV, the value filed should include the "value", > > >>> "Reserved" and "Flags", so it's better to change the "Value" field > > >>> to "TTL" field hence to reduce the confusion. > > >>> > > >> > > >> Sami: Sure. > > >> > > >>> 4. Section 3.2 > > >>> "This TLV shall be included in the echo request by the originator > > >>> of request. The use of this TLV is optional. If a receiver does > > >>> not understand the TTL TLV, it will simply ignore the TLV (Type > > >>> value of TLV is assumed to be in the range of optional TLV's which > > >>> SHOULD be ignored if an implementation does not support or > understand them). > > >>> In the absence of TTL TLV or if TTL TLV is ignored by a receiver, > > >>> the determination of the TTL value used in the MPLS label on the > > >>> echo reply is beyond the scope of this document." > > >>> > > >>> What's your mean of "beyond the scope of this document" here? Is > > >>> it to apply the procedures defined in RFC4379 or just let it to > > >>> the implementation?I guess you assume to apply the definition in > > >>> RFC4379, > > >> > > >> Sami: It is out of scope of this document, but for sure procedure > > >> in 4379 > > apply. > > >>> if > > >> > > >>> so, the TTL of the MPLS label will be more probably set to 255, > > >>> means the echo reply will be sent to the ingress of the MS-PW or > > >>> LSP. I am not sure whether this is the right procedure, it seems a > > >>> security issue. IMHO, it does not make any sense to expect the > > >>> receiver to send echo reply in this situation, and even sent, the > > >>> initiator will not receive the reply. The safer way is to drop the > > >>> whole > > echo request and record an error log. > > >> > > >> > > >> Sami: > > >> > > >> We are not saying the receiver must send a reply, however if he > > >> does the reply may be received by the ingress node which might be > > >> the wrong node, since the receiver may not set the TTL properly on > > >> the reply, keep in mind that this is a receiver with an old > > >> implementation and > > the TLV is optional. > > >> > > >> Please refer to the security section for your security concern. > > >> > > >> Sami: > > >> > > >> > > >>> > > >>> 5. Section 3.2 > > >>> > > >>> "In other words, if the value of the TTL provided by this TLV does > > >>> not match the TTL determined by other means, such as Switching > > >>> Point TLV in MS-PW, then TTL TLV must be used." > > >>> Here, it implies that the receiver has to perform TTL matching > > >>> process, since how to set the TTL is independent of such matching, > > >>> seems this sentence is redundant and confusion. > > >>> > > >> > > >> Sami: Are you familiar with the switching point TLV? and what it > > includes? > > >> > > >>> 6. Section 4. > > >>> > > >>> "...The value field of the TTL TLV and the TTL field of the MPLS > > >>> label are set to 2," > > >>> > > >>> I guess that the MPLS Label is the PW label, right? It's better to > > >>> add more text to make this more explicit. In addition, how to set > > >>> the TTL value of the tunnel Label? 255 or any other value? > > >>> > > >> > > >> Sami: The tunnel label TTL is irrelevant here, however we will make > > >> it > > explicit that this is a PW label. > > >> > > >>> 5. Section 4.1. Traceroute mode > > >>> "In the traceroute mode TTL value in the TLV is successively set > > >>> to 1, 2, and so on. This is similar to the TTL values used for > > >>> the label set on the packet." > > >>> IMHO, some text may be needed to clarify which "FEC" should be > > >>> carried, especially for MS-PW trace. Since in Section 4.0, the > > >>> example says the FEC of segment C-D should be carried, does it > > >>> mean the FEC of last PW Segment of the segment under test should > > >>> be carried or the FEC will vary when TTL changed. For example, > > >>> when perform segment trace (e.g., to trace B-D segment), when TTL > > >>> is 1, which > > FEC should be carried? > > >> > > >> Sami: > > >> We are not here redefining a trace route for a MS-PW, we are > > >> describing > > how our extensions will apply. > > >> Sami: > > >> > > >>> > > >>> 6. Section 4.2. Error scenario > > >>> For this scenario, do you need to define some error codes here? > > >> > > >> Sami: > > >> The section describe how to handle the error scenario, there is no > > >> need > > for an error code. > > >> Sami: > > >> > > >>> > > >>> 7. For MS-PW trace, seems that you assume the tunnel is pipe mode, > > >>> if so, it should be explicitly stated. If not, you should define > > >>> how the MS-PW trace works (given that the tunnels in both > > >>> directions may span different hops). > > >> > > >> Sami: > > >> Not sure I get the concern? Again we are not re-defining how MS-PW > > trace work. > > >> > > >> Thanks, > > >> > > >> Sami > > >>> > > >>> Nits: > > >>> > > >>> 1. Please check the text for acronyms that have not been expanded > > >>> in their first use. > > >>> > > >>> 2. I run the idnits tool and found the following nits, please > > >>> check and fix. > > >>> (See RFCs 3967 and 4897 for information about using normative > > >>> references > > >>> to lower-maturity documents in RFCs) > > >>> > > >>> -- Looks like a reference, but probably isn't: 'RFC2119' on line > > >>> 121 > > >>> > > >>> -- Looks like a reference, but probably isn't: 'RFC4379' on line > > >>> 258 > > >>> > > >>> =3D=3D Unused Reference: '1' is defined on line 284, but no explici= t > > >>> reference > > >>> was found in the text > > >>> > > >>> =3D=3D Unused Reference: '2' is defined on line 287, but no explici= t > > >>> reference > > >>> was found in the text > > >>> > > >>> =3D=3D Unused Reference: '3' is defined on line 291, but no explici= t > > >>> reference > > >>> was found in the text > > >>> > > >>> 3. Section 3.2, > > >>> 3.1 first para first sentence > > >>> s/shall/SHALL > > >>> 3.2 last para, the last second sentence s/must/MUST > > >>> > > >>> 4. The draft quotes the MS-PW and bidirectional co-routed LSP > > >>> concept, it's better to add related references to this document. > > >>> > > >>> > > >>> Best regards, > > >>> Mach > > >>> > > >>> > > >> > > > > > > _______________________________________________ > > > mpls mailing list > > > mpls@ietf.org > > > https://www.ietf.org/mailman/listinfo/mpls > > > > > > > -- > > > > > > Loa Andersson email: loa@mail01.huawei.com > > Senior MPLS Expert loa@pi.nu > > Huawei Technologies (consultant) phone: +46 739 81 21 64 > > > > _______________________________________________ > > mpls mailing list > > mpls@ietf.org > > https://www.ietf.org/mailman/listinfo/mpls >=20 > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls From nobody Thu Jul 31 07:20:48 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id BDC4D1B2846; Thu, 31 Jul 2014 07:20:41 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -114.502 X-Spam-Level: X-Spam-Status: No, score=-114.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id E_WcuxVw00be; Thu, 31 Jul 2014 07:20:34 -0700 (PDT) Received: from rcdn-iport-3.cisco.com (rcdn-iport-3.cisco.com [173.37.86.74]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id BFED11A0059; Thu, 31 Jul 2014 07:20:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=12608; q=dns/txt; s=iport; t=1406816433; x=1408026033; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=oyXx9RwufBXMh8htdoDkACd0/TC3FqwXZ+VzMC6gSdA=; b=Tz90IpvxdzLuolw0f1WjKlUkRLltkx5IKMsfsvDgmzyytIAJU9iQwupW I47sA7QNo6ScAIzRxuF6r5wt/5SDh9pAhPGt3gco3e7sJFq7+Tk1vtU3i oOwFY+O01QJvWVH1JKhzadp7IMiJVZEJ4VILuWuItf+CLnvKy/LM885p4 s=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Ai0FAOxP2lOtJV2b/2dsb2JhbABZgmokUlcEyn8jDIdJAYEGFneEAwEBAQEDAQEBNy0EAwsMAgICAQgRBAEBAQoUCQcbDAsUCQgCBA4FCIg6AQy7RxMEBIl7hGsRAR8xBwaDKYEbBbA3g0lsAYECBwIXIg X-IronPort-AV: E=Sophos;i="5.01,772,1400025600"; d="scan'208";a="344170868" Received: from rcdn-core-4.cisco.com ([173.37.93.155]) by rcdn-iport-3.cisco.com with ESMTP; 31 Jul 2014 14:20:31 +0000 Received: from xhc-aln-x15.cisco.com (xhc-aln-x15.cisco.com [173.36.12.89]) by rcdn-core-4.cisco.com (8.14.5/8.14.5) with ESMTP id s6VEKVrK008641 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Thu, 31 Jul 2014 14:20:31 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-aln-x15.cisco.com ([173.36.12.89]) with mapi id 14.03.0123.003; Thu, 31 Jul 2014 09:20:31 -0500 From: "Nobo Akiya (nobo)" To: Alexander Vainshtein Thread-Topic: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt Thread-Index: AQHPrMlKRtb0V4c6eEO/q10Vgbo2Opu6OslQ Date: Thu, 31 Jul 2014 14:20:30 +0000 Message-ID: References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> <53DA3194.4040306@pi.nu> <7adbcb851e224adbbd93416e5932b618@AM3PR03MB612.eurprd03.prod.outlook.com> In-Reply-To: <7adbcb851e224adbbd93416e5932b618@AM3PR03MB612.eurprd03.prod.outlook.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [161.44.212.70] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/7_AsajoKBJDpPzLJrgyQ6h8rldk Cc: "rtg-dir@ietf.org" , "mpls@ietf.org" , "Sami Boutros \(sboutros\)" , "rtg-ads@tools.ietf.org" , "draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org" Subject: Re: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 14:20:42 -0000 Hi Sasha, I wish that was the case :) https://www.iana.org/assignments/mpls-lsp-ping-parameters/mpls-lsp-ping-par= ameters.xhtml#tlvs 32768-49161 Standards Action This range is for optional TLVs that can be silently dropped if not recogni= zed. Thanks, Nobo > -----Original Message----- > From: Alexander Vainshtein [mailto:Alexander.Vainshtein@ecitele.com] > Sent: Thursday, July 31, 2014 10:11 AM > To: Nobo Akiya (nobo) > Cc: rtg-dir@ietf.org; draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org= ; rtg- > ads@tools.ietf.org; mpls@ietf.org; Loa Andersson; Shah, Himanshu; Sami > Boutros (sboutros); Mach Chen > Subject: RE: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl= -tlv- > 07.txt >=20 > Nobo, and all, > 0x8001 =3D 32769 falls in the "Unassigned" range of TLVs for LSP Ping. I = think > that it has been considered as safe enough to use by the implementers. > Somehow the relevant IANA registry does not provide any values for > experimental use. >=20 > My 2c, > Sasha > Email: Alexander.Vainshtein@ecitele.com > Mobile: 054-9266302 >=20 > > -----Original Message----- > > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Nobo Akiya > > (nobo) > > Sent: Thursday, July 31, 2014 4:16 PM > > To: Loa Andersson; Shah, Himanshu; Sami Boutros (sboutros); Mach Chen > > Cc: rtg-dir@ietf.org; > > draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; rtg- > > ads@tools.ietf.org; mpls@ietf.org > > Subject: Re: [mpls] [RTG-DIR] RtgDir review: > > draft-ietf-mpls-lsp-ping-ttl-tlv- 07.txt > > > > Hi Loa, Authors, > > > > The code base which I'm familiar with already have shipped > > implementation of the TTL TLV, and it appears that the Type=3D0x8001 is > being used. > > > > I do not have the knowledge of why this value was used in this > > implementation without doing early IANA allocation for the TTL TLV > > code point. > > > > If usage of Type=3D0x8001 as the TTL TLV does not conflict with any > > other implementations out there, is it possible to ask IANA to assign > > this value > > (0x8001) when the document progresses? > > > > My apologies for causing extra burden on the authors, the Shepherd and > > the ADs. > > > > But I truly hope that this request can be accommodated. > > > > Thanks! > > > > -Nobo > > > > > -----Original Message----- > > > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Loa Andersson > > > Sent: Thursday, July 31, 2014 8:08 AM > > > To: Shah, Himanshu; Sami Boutros (sboutros); Mach Chen > > > Cc: rtg-dir@ietf.org; > > > draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; > > > mpls@ietf.org; rtg-ads@tools.ietf.org > > > Subject: Re: [mpls] [RTG-DIR] RtgDir review: > > > draft-ietf-mpls-lsp-ping-ttl-tlv- 07.txt > > > > > > Himanshu, > > > > > > A request for early allocation need to come from the authors, to > > > wg-chairs and ADs. > > > > > > The draft is through IETF Last call and has been updated, given that > > > ADrian is comfortable it will be on the IESG agenda shortly. > > > > > > IANA has reviewed it and are OK. > > > > > > Normally I would not ask for early allocation this late in the proces= s. > > > > > > /Loa > > > > > > On 2014-07-31 01:15, Shah, Himanshu wrote: > > > > This draft fills a major shortcoming of the VCCV ping over MS-PW > > > (especially if reply mode is in-band). > > > > I am not sure why this draft is stuck (i.e. taking too long to go t= hrough). > > > > > > > > Is there a provisional IANA assignment for the TTL TLV type value? > > > > > > > > Thanks, > > > > himanshu > > > > > > > > -----Original Message----- > > > > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Sami > > > > Boutros > > > > (sboutros) > > > > Sent: Wednesday, July 30, 2014 3:44 PM > > > > To: Mach Chen > > > > Cc: rtg-dir@ietf.org; mpls@ietf.org; > > > > draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; > > > > rtg-ads@tools.ietf.org > > > > Subject: Re: [mpls] RtgDir review: > > > > draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt > > > > > > > > Resending.. > > > > > > > > On May 15, 2014, at 9:20 PM, Sami Boutros (sboutros) wrote: > > > > > > > >>> > > > >>> Minor Issues: > > > >>> > > > >>> 1. Since the TTL TLV is defined for both MS-PW and bidirectional > > > >>> co-routed LSP, it should be better to explicitly state this in > > > >>> the abstract > > > section. > > > >>> > > > >> > > > >> Sami: Sure will do. > > > >> > > > >>> 2. "LSP-Ping echo request", "LSP-Ping request", "MPLS echo > > > >>> request", "echo request" and "request" are interchangeably used > > > >>> in the draft, it's better to unify the usage of it to "MPLS echo > > > >>> request" (to align with the usage in RFC4379). For "echo reply", > > > >>> "bidirectional co-routed LSP", they have the similar issue. > > > >>> > > > >> > > > >> Sami: Ok, will fix that. > > > >> > > > >>> 3.Section 3.1 > > > >>> > > > >>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- > > + > > > >>> | Value | Reserved | Flags = | > > > >>> > > > >>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > > > >>> > > > >>> For the TTL TLV, the value filed should include the "value", > > > >>> "Reserved" and "Flags", so it's better to change the "Value" > > > >>> field to "TTL" field hence to reduce the confusion. > > > >>> > > > >> > > > >> Sami: Sure. > > > >> > > > >>> 4. Section 3.2 > > > >>> "This TLV shall be included in the echo request by the > > > >>> originator of request. The use of this TLV is optional. If a > > > >>> receiver does not understand the TTL TLV, it will simply ignore > > > >>> the TLV (Type value of TLV is assumed to be in the range of > > > >>> optional TLV's which SHOULD be ignored if an implementation does > > > >>> not support or > > understand them). > > > >>> In the absence of TTL TLV or if TTL TLV is ignored by a > > > >>> receiver, the determination of the TTL value used in the MPLS > > > >>> label on the echo reply is beyond the scope of this document." > > > >>> > > > >>> What's your mean of "beyond the scope of this document" here? Is > > > >>> it to apply the procedures defined in RFC4379 or just let it to > > > >>> the implementation?I guess you assume to apply the definition in > > > >>> RFC4379, > > > >> > > > >> Sami: It is out of scope of this document, but for sure procedure > > > >> in 4379 > > > apply. > > > >>> if > > > >> > > > >>> so, the TTL of the MPLS label will be more probably set to 255, > > > >>> means the echo reply will be sent to the ingress of the MS-PW or > > > >>> LSP. I am not sure whether this is the right procedure, it seems > > > >>> a security issue. IMHO, it does not make any sense to expect the > > > >>> receiver to send echo reply in this situation, and even sent, > > > >>> the initiator will not receive the reply. The safer way is to > > > >>> drop the whole > > > echo request and record an error log. > > > >> > > > >> > > > >> Sami: > > > >> > > > >> We are not saying the receiver must send a reply, however if he > > > >> does the reply may be received by the ingress node which might be > > > >> the wrong node, since the receiver may not set the TTL properly > > > >> on the reply, keep in mind that this is a receiver with an old > > > >> implementation and > > > the TLV is optional. > > > >> > > > >> Please refer to the security section for your security concern. > > > >> > > > >> Sami: > > > >> > > > >> > > > >>> > > > >>> 5. Section 3.2 > > > >>> > > > >>> "In other words, if the value of the TTL provided by this TLV > > > >>> does not match the TTL determined by other means, such as > > > >>> Switching Point TLV in MS-PW, then TTL TLV must be used." > > > >>> Here, it implies that the receiver has to perform TTL matching > > > >>> process, since how to set the TTL is independent of such > > > >>> matching, seems this sentence is redundant and confusion. > > > >>> > > > >> > > > >> Sami: Are you familiar with the switching point TLV? and what it > > > includes? > > > >> > > > >>> 6. Section 4. > > > >>> > > > >>> "...The value field of the TTL TLV and the TTL field of the MPLS > > > >>> label are set to 2," > > > >>> > > > >>> I guess that the MPLS Label is the PW label, right? It's better > > > >>> to add more text to make this more explicit. In addition, how to > > > >>> set the TTL value of the tunnel Label? 255 or any other value? > > > >>> > > > >> > > > >> Sami: The tunnel label TTL is irrelevant here, however we will > > > >> make it > > > explicit that this is a PW label. > > > >> > > > >>> 5. Section 4.1. Traceroute mode > > > >>> "In the traceroute mode TTL value in the TLV is successively > > > >>> set to 1, 2, and so on. This is similar to the TTL values used > > > >>> for the label set on the packet." > > > >>> IMHO, some text may be needed to clarify which "FEC" should be > > > >>> carried, especially for MS-PW trace. Since in Section 4.0, the > > > >>> example says the FEC of segment C-D should be carried, does it > > > >>> mean the FEC of last PW Segment of the segment under test should > > > >>> be carried or the FEC will vary when TTL changed. For example, > > > >>> when perform segment trace (e.g., to trace B-D segment), when > > > >>> TTL is 1, which > > > FEC should be carried? > > > >> > > > >> Sami: > > > >> We are not here redefining a trace route for a MS-PW, we are > > > >> describing > > > how our extensions will apply. > > > >> Sami: > > > >> > > > >>> > > > >>> 6. Section 4.2. Error scenario > > > >>> For this scenario, do you need to define some error codes here? > > > >> > > > >> Sami: > > > >> The section describe how to handle the error scenario, there is > > > >> no need > > > for an error code. > > > >> Sami: > > > >> > > > >>> > > > >>> 7. For MS-PW trace, seems that you assume the tunnel is pipe > > > >>> mode, if so, it should be explicitly stated. If not, you should > > > >>> define how the MS-PW trace works (given that the tunnels in both > > > >>> directions may span different hops). > > > >> > > > >> Sami: > > > >> Not sure I get the concern? Again we are not re-defining how > > > >> MS-PW > > > trace work. > > > >> > > > >> Thanks, > > > >> > > > >> Sami > > > >>> > > > >>> Nits: > > > >>> > > > >>> 1. Please check the text for acronyms that have not been > > > >>> expanded in their first use. > > > >>> > > > >>> 2. I run the idnits tool and found the following nits, please > > > >>> check and fix. > > > >>> (See RFCs 3967 and 4897 for information about using normative > > > >>> references > > > >>> to lower-maturity documents in RFCs) > > > >>> > > > >>> -- Looks like a reference, but probably isn't: 'RFC2119' on line > > > >>> 121 > > > >>> > > > >>> -- Looks like a reference, but probably isn't: 'RFC4379' on line > > > >>> 258 > > > >>> > > > >>> =3D=3D Unused Reference: '1' is defined on line 284, but no expli= cit > > > >>> reference > > > >>> was found in the text > > > >>> > > > >>> =3D=3D Unused Reference: '2' is defined on line 287, but no expli= cit > > > >>> reference > > > >>> was found in the text > > > >>> > > > >>> =3D=3D Unused Reference: '3' is defined on line 291, but no expli= cit > > > >>> reference > > > >>> was found in the text > > > >>> > > > >>> 3. Section 3.2, > > > >>> 3.1 first para first sentence > > > >>> s/shall/SHALL > > > >>> 3.2 last para, the last second sentence s/must/MUST > > > >>> > > > >>> 4. The draft quotes the MS-PW and bidirectional co-routed LSP > > > >>> concept, it's better to add related references to this document. > > > >>> > > > >>> > > > >>> Best regards, > > > >>> Mach > > > >>> > > > >>> > > > >> > > > > > > > > _______________________________________________ > > > > mpls mailing list > > > > mpls@ietf.org > > > > https://www.ietf.org/mailman/listinfo/mpls > > > > > > > > > > -- > > > > > > > > > Loa Andersson email: loa@mail01.huawei.com > > > Senior MPLS Expert loa@pi.nu > > > Huawei Technologies (consultant) phone: +46 739 81 21 64 > > > > > > _______________________________________________ > > > mpls mailing list > > > mpls@ietf.org > > > https://www.ietf.org/mailman/listinfo/mpls > > > > _______________________________________________ > > mpls mailing list > > mpls@ietf.org > > https://www.ietf.org/mailman/listinfo/mpls From nobody Thu Jul 31 07:29:50 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 770BA1B2862; Thu, 31 Jul 2014 07:29:42 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2TgXO-pb_mEJ; Thu, 31 Jul 2014 07:29:39 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id EEAF61B282F; Thu, 31 Jul 2014 07:29:38 -0700 (PDT) Received: from [192.168.1.133] (81-236-221-144-no93.tbcn.telia.com [81.236.221.144]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 4EB1C1802B19; Thu, 31 Jul 2014 16:29:37 +0200 (CEST) Message-ID: <53DA52D0.8030206@pi.nu> Date: Thu, 31 Jul 2014 16:29:36 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "Nobo Akiya (nobo)" , Alexander Vainshtein References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> <53DA3194.4040306@pi.nu> <7adbcb851e224adbbd93416e5932b618@AM3PR03MB612.eurprd03.prod.outlook.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/LV0AnvQEc4FgmrCkbpl8TYiF5T0 Cc: "rtg-dir@ietf.org" , "mpls@ietf.org" , "Sami Boutros \(sboutros\)" , "rtg-ads@tools.ietf.org" , "draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org" Subject: Re: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 14:29:42 -0000 Nobo, If that is what you want, I can initiate the procedure to allocate that code point. /Loa On 2014-07-31 16:20, Nobo Akiya (nobo) wrote: > Hi Sasha, > > I wish that was the case :) > > https://www.iana.org/assignments/mpls-lsp-ping-parameters/mpls-lsp-ping-parameters.xhtml#tlvs > > 32768-49161 > Standards Action > This range is for optional TLVs that can be silently dropped if not recognized. > > Thanks, > Nobo > >> -----Original Message----- >> From: Alexander Vainshtein [mailto:Alexander.Vainshtein@ecitele.com] >> Sent: Thursday, July 31, 2014 10:11 AM >> To: Nobo Akiya (nobo) >> Cc: rtg-dir@ietf.org; draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; rtg- >> ads@tools.ietf.org; mpls@ietf.org; Loa Andersson; Shah, Himanshu; Sami >> Boutros (sboutros); Mach Chen >> Subject: RE: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv- >> 07.txt >> >> Nobo, and all, >> 0x8001 = 32769 falls in the "Unassigned" range of TLVs for LSP Ping. I think >> that it has been considered as safe enough to use by the implementers. >> Somehow the relevant IANA registry does not provide any values for >> experimental use. >> >> My 2c, >> Sasha >> Email: Alexander.Vainshtein@ecitele.com >> Mobile: 054-9266302 >> >>> -----Original Message----- >>> From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Nobo Akiya >>> (nobo) >>> Sent: Thursday, July 31, 2014 4:16 PM >>> To: Loa Andersson; Shah, Himanshu; Sami Boutros (sboutros); Mach Chen >>> Cc: rtg-dir@ietf.org; >>> draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; rtg- >>> ads@tools.ietf.org; mpls@ietf.org >>> Subject: Re: [mpls] [RTG-DIR] RtgDir review: >>> draft-ietf-mpls-lsp-ping-ttl-tlv- 07.txt >>> >>> Hi Loa, Authors, >>> >>> The code base which I'm familiar with already have shipped >>> implementation of the TTL TLV, and it appears that the Type=0x8001 is >> being used. >>> >>> I do not have the knowledge of why this value was used in this >>> implementation without doing early IANA allocation for the TTL TLV >>> code point. >>> >>> If usage of Type=0x8001 as the TTL TLV does not conflict with any >>> other implementations out there, is it possible to ask IANA to assign >>> this value >>> (0x8001) when the document progresses? >>> >>> My apologies for causing extra burden on the authors, the Shepherd and >>> the ADs. >>> >>> But I truly hope that this request can be accommodated. >>> >>> Thanks! >>> >>> -Nobo >>> >>>> -----Original Message----- >>>> From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Loa Andersson >>>> Sent: Thursday, July 31, 2014 8:08 AM >>>> To: Shah, Himanshu; Sami Boutros (sboutros); Mach Chen >>>> Cc: rtg-dir@ietf.org; >>>> draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; >>>> mpls@ietf.org; rtg-ads@tools.ietf.org >>>> Subject: Re: [mpls] [RTG-DIR] RtgDir review: >>>> draft-ietf-mpls-lsp-ping-ttl-tlv- 07.txt >>>> >>>> Himanshu, >>>> >>>> A request for early allocation need to come from the authors, to >>>> wg-chairs and ADs. >>>> >>>> The draft is through IETF Last call and has been updated, given that >>>> ADrian is comfortable it will be on the IESG agenda shortly. >>>> >>>> IANA has reviewed it and are OK. >>>> >>>> Normally I would not ask for early allocation this late in the process. >>>> >>>> /Loa >>>> >>>> On 2014-07-31 01:15, Shah, Himanshu wrote: >>>>> This draft fills a major shortcoming of the VCCV ping over MS-PW >>>> (especially if reply mode is in-band). >>>>> I am not sure why this draft is stuck (i.e. taking too long to go through). >>>>> >>>>> Is there a provisional IANA assignment for the TTL TLV type value? >>>>> >>>>> Thanks, >>>>> himanshu >>>>> >>>>> -----Original Message----- >>>>> From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Sami >>>>> Boutros >>>>> (sboutros) >>>>> Sent: Wednesday, July 30, 2014 3:44 PM >>>>> To: Mach Chen >>>>> Cc: rtg-dir@ietf.org; mpls@ietf.org; >>>>> draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; >>>>> rtg-ads@tools.ietf.org >>>>> Subject: Re: [mpls] RtgDir review: >>>>> draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt >>>>> >>>>> Resending.. >>>>> >>>>> On May 15, 2014, at 9:20 PM, Sami Boutros (sboutros) wrote: >>>>> >>>>>>> >>>>>>> Minor Issues: >>>>>>> >>>>>>> 1. Since the TTL TLV is defined for both MS-PW and bidirectional >>>>>>> co-routed LSP, it should be better to explicitly state this in >>>>>>> the abstract >>>> section. >>>>>>> >>>>>> >>>>>> Sami: Sure will do. >>>>>> >>>>>>> 2. "LSP-Ping echo request", "LSP-Ping request", "MPLS echo >>>>>>> request", "echo request" and "request" are interchangeably used >>>>>>> in the draft, it's better to unify the usage of it to "MPLS echo >>>>>>> request" (to align with the usage in RFC4379). For "echo reply", >>>>>>> "bidirectional co-routed LSP", they have the similar issue. >>>>>>> >>>>>> >>>>>> Sami: Ok, will fix that. >>>>>> >>>>>>> 3.Section 3.1 >>>>>>> >>>>>>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- >>> + >>>>>>> | Value | Reserved | Flags | >>>>>>> >>>>>>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >>>>>>> >>>>>>> For the TTL TLV, the value filed should include the "value", >>>>>>> "Reserved" and "Flags", so it's better to change the "Value" >>>>>>> field to "TTL" field hence to reduce the confusion. >>>>>>> >>>>>> >>>>>> Sami: Sure. >>>>>> >>>>>>> 4. Section 3.2 >>>>>>> "This TLV shall be included in the echo request by the >>>>>>> originator of request. The use of this TLV is optional. If a >>>>>>> receiver does not understand the TTL TLV, it will simply ignore >>>>>>> the TLV (Type value of TLV is assumed to be in the range of >>>>>>> optional TLV's which SHOULD be ignored if an implementation does >>>>>>> not support or >>> understand them). >>>>>>> In the absence of TTL TLV or if TTL TLV is ignored by a >>>>>>> receiver, the determination of the TTL value used in the MPLS >>>>>>> label on the echo reply is beyond the scope of this document." >>>>>>> >>>>>>> What's your mean of "beyond the scope of this document" here? Is >>>>>>> it to apply the procedures defined in RFC4379 or just let it to >>>>>>> the implementation?I guess you assume to apply the definition in >>>>>>> RFC4379, >>>>>> >>>>>> Sami: It is out of scope of this document, but for sure procedure >>>>>> in 4379 >>>> apply. >>>>>>> if >>>>>> >>>>>>> so, the TTL of the MPLS label will be more probably set to 255, >>>>>>> means the echo reply will be sent to the ingress of the MS-PW or >>>>>>> LSP. I am not sure whether this is the right procedure, it seems >>>>>>> a security issue. IMHO, it does not make any sense to expect the >>>>>>> receiver to send echo reply in this situation, and even sent, >>>>>>> the initiator will not receive the reply. The safer way is to >>>>>>> drop the whole >>>> echo request and record an error log. >>>>>> >>>>>> >>>>>> Sami: >>>>>> >>>>>> We are not saying the receiver must send a reply, however if he >>>>>> does the reply may be received by the ingress node which might be >>>>>> the wrong node, since the receiver may not set the TTL properly >>>>>> on the reply, keep in mind that this is a receiver with an old >>>>>> implementation and >>>> the TLV is optional. >>>>>> >>>>>> Please refer to the security section for your security concern. >>>>>> >>>>>> Sami: >>>>>> >>>>>> >>>>>>> >>>>>>> 5. Section 3.2 >>>>>>> >>>>>>> "In other words, if the value of the TTL provided by this TLV >>>>>>> does not match the TTL determined by other means, such as >>>>>>> Switching Point TLV in MS-PW, then TTL TLV must be used." >>>>>>> Here, it implies that the receiver has to perform TTL matching >>>>>>> process, since how to set the TTL is independent of such >>>>>>> matching, seems this sentence is redundant and confusion. >>>>>>> >>>>>> >>>>>> Sami: Are you familiar with the switching point TLV? and what it >>>> includes? >>>>>> >>>>>>> 6. Section 4. >>>>>>> >>>>>>> "...The value field of the TTL TLV and the TTL field of the MPLS >>>>>>> label are set to 2," >>>>>>> >>>>>>> I guess that the MPLS Label is the PW label, right? It's better >>>>>>> to add more text to make this more explicit. In addition, how to >>>>>>> set the TTL value of the tunnel Label? 255 or any other value? >>>>>>> >>>>>> >>>>>> Sami: The tunnel label TTL is irrelevant here, however we will >>>>>> make it >>>> explicit that this is a PW label. >>>>>> >>>>>>> 5. Section 4.1. Traceroute mode >>>>>>> "In the traceroute mode TTL value in the TLV is successively >>>>>>> set to 1, 2, and so on. This is similar to the TTL values used >>>>>>> for the label set on the packet." >>>>>>> IMHO, some text may be needed to clarify which "FEC" should be >>>>>>> carried, especially for MS-PW trace. Since in Section 4.0, the >>>>>>> example says the FEC of segment C-D should be carried, does it >>>>>>> mean the FEC of last PW Segment of the segment under test should >>>>>>> be carried or the FEC will vary when TTL changed. For example, >>>>>>> when perform segment trace (e.g., to trace B-D segment), when >>>>>>> TTL is 1, which >>>> FEC should be carried? >>>>>> >>>>>> Sami: >>>>>> We are not here redefining a trace route for a MS-PW, we are >>>>>> describing >>>> how our extensions will apply. >>>>>> Sami: >>>>>> >>>>>>> >>>>>>> 6. Section 4.2. Error scenario >>>>>>> For this scenario, do you need to define some error codes here? >>>>>> >>>>>> Sami: >>>>>> The section describe how to handle the error scenario, there is >>>>>> no need >>>> for an error code. >>>>>> Sami: >>>>>> >>>>>>> >>>>>>> 7. For MS-PW trace, seems that you assume the tunnel is pipe >>>>>>> mode, if so, it should be explicitly stated. If not, you should >>>>>>> define how the MS-PW trace works (given that the tunnels in both >>>>>>> directions may span different hops). >>>>>> >>>>>> Sami: >>>>>> Not sure I get the concern? Again we are not re-defining how >>>>>> MS-PW >>>> trace work. >>>>>> >>>>>> Thanks, >>>>>> >>>>>> Sami >>>>>>> >>>>>>> Nits: >>>>>>> >>>>>>> 1. Please check the text for acronyms that have not been >>>>>>> expanded in their first use. >>>>>>> >>>>>>> 2. I run the idnits tool and found the following nits, please >>>>>>> check and fix. >>>>>>> (See RFCs 3967 and 4897 for information about using normative >>>>>>> references >>>>>>> to lower-maturity documents in RFCs) >>>>>>> >>>>>>> -- Looks like a reference, but probably isn't: 'RFC2119' on line >>>>>>> 121 >>>>>>> >>>>>>> -- Looks like a reference, but probably isn't: 'RFC4379' on line >>>>>>> 258 >>>>>>> >>>>>>> == Unused Reference: '1' is defined on line 284, but no explicit >>>>>>> reference >>>>>>> was found in the text >>>>>>> >>>>>>> == Unused Reference: '2' is defined on line 287, but no explicit >>>>>>> reference >>>>>>> was found in the text >>>>>>> >>>>>>> == Unused Reference: '3' is defined on line 291, but no explicit >>>>>>> reference >>>>>>> was found in the text >>>>>>> >>>>>>> 3. Section 3.2, >>>>>>> 3.1 first para first sentence >>>>>>> s/shall/SHALL >>>>>>> 3.2 last para, the last second sentence s/must/MUST >>>>>>> >>>>>>> 4. The draft quotes the MS-PW and bidirectional co-routed LSP >>>>>>> concept, it's better to add related references to this document. >>>>>>> >>>>>>> >>>>>>> Best regards, >>>>>>> Mach >>>>>>> >>>>>>> >>>>>> >>>>> >>>>> _______________________________________________ >>>>> mpls mailing list >>>>> mpls@ietf.org >>>>> https://www.ietf.org/mailman/listinfo/mpls >>>>> >>>> >>>> -- >>>> >>>> >>>> Loa Andersson email: loa@mail01.huawei.com >>>> Senior MPLS Expert loa@pi.nu >>>> Huawei Technologies (consultant) phone: +46 739 81 21 64 >>>> >>>> _______________________________________________ >>>> mpls mailing list >>>> mpls@ietf.org >>>> https://www.ietf.org/mailman/listinfo/mpls >>> >>> _______________________________________________ >>> mpls mailing list >>> mpls@ietf.org >>> https://www.ietf.org/mailman/listinfo/mpls -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Thu Jul 31 07:44:55 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 079791B28BB; Thu, 31 Jul 2014 07:44:54 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 53ZvKoUgvICc; Thu, 31 Jul 2014 07:44:50 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3F48E1A005B; Thu, 31 Jul 2014 07:44:50 -0700 (PDT) Received: from [192.168.1.133] (81-236-221-144-no93.tbcn.telia.com [81.236.221.144]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 90FE41802B19; Thu, 31 Jul 2014 16:44:48 +0200 (CEST) Message-ID: <53DA565F.3030906@pi.nu> Date: Thu, 31 Jul 2014 16:44:47 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "Nobo Akiya (nobo)" , Alexander Vainshtein References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> <53DA3194.4040306@pi.nu> <7adbcb851e224adbbd93416e5932b618@AM3PR03MB612.eurprd03.prod.outlook.com> <53DA52D0.8030206@pi.nu> In-Reply-To: <53DA52D0.8030206@pi.nu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/3tVVRn-72UTk_5hcoYH2gWZ1Cok Cc: "rtg-dir@ietf.org" , "rtg-ads@tools.ietf.org" , "Sami Boutros \(sboutros\)" , "draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org" , "mpls@ietf.org" Subject: Re: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 14:44:54 -0000 Nobo, dam it - you are not an author of this document, so you can't request the early allocation. If you think we should do it, tell one of the authors to send me a mail. /Loa On 2014-07-31 16:29, Loa Andersson wrote: > Nobo, > > If that is what you want, I can initiate the procedure to allocate that > code point. > > /Loa > > On 2014-07-31 16:20, Nobo Akiya (nobo) wrote: >> Hi Sasha, >> >> I wish that was the case :) >> >> https://www.iana.org/assignments/mpls-lsp-ping-parameters/mpls-lsp-ping-parameters.xhtml#tlvs >> >> >> 32768-49161 >> Standards Action >> This range is for optional TLVs that can be silently dropped if not >> recognized. >> >> Thanks, >> Nobo >> >>> -----Original Message----- >>> From: Alexander Vainshtein [mailto:Alexander.Vainshtein@ecitele.com] >>> Sent: Thursday, July 31, 2014 10:11 AM >>> To: Nobo Akiya (nobo) >>> Cc: rtg-dir@ietf.org; >>> draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; rtg- >>> ads@tools.ietf.org; mpls@ietf.org; Loa Andersson; Shah, Himanshu; Sami >>> Boutros (sboutros); Mach Chen >>> Subject: RE: [mpls] [RTG-DIR] RtgDir review: >>> draft-ietf-mpls-lsp-ping-ttl-tlv- >>> 07.txt >>> >>> Nobo, and all, >>> 0x8001 = 32769 falls in the "Unassigned" range of TLVs for LSP Ping. >>> I think >>> that it has been considered as safe enough to use by the implementers. >>> Somehow the relevant IANA registry does not provide any values for >>> experimental use. >>> >>> My 2c, >>> Sasha >>> Email: Alexander.Vainshtein@ecitele.com >>> Mobile: 054-9266302 >>> >>>> -----Original Message----- >>>> From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Nobo Akiya >>>> (nobo) >>>> Sent: Thursday, July 31, 2014 4:16 PM >>>> To: Loa Andersson; Shah, Himanshu; Sami Boutros (sboutros); Mach Chen >>>> Cc: rtg-dir@ietf.org; >>>> draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; rtg- >>>> ads@tools.ietf.org; mpls@ietf.org >>>> Subject: Re: [mpls] [RTG-DIR] RtgDir review: >>>> draft-ietf-mpls-lsp-ping-ttl-tlv- 07.txt >>>> >>>> Hi Loa, Authors, >>>> >>>> The code base which I'm familiar with already have shipped >>>> implementation of the TTL TLV, and it appears that the Type=0x8001 is >>> being used. >>>> >>>> I do not have the knowledge of why this value was used in this >>>> implementation without doing early IANA allocation for the TTL TLV >>>> code point. >>>> >>>> If usage of Type=0x8001 as the TTL TLV does not conflict with any >>>> other implementations out there, is it possible to ask IANA to assign >>>> this value >>>> (0x8001) when the document progresses? >>>> >>>> My apologies for causing extra burden on the authors, the Shepherd and >>>> the ADs. >>>> >>>> But I truly hope that this request can be accommodated. >>>> >>>> Thanks! >>>> >>>> -Nobo >>>> >>>>> -----Original Message----- >>>>> From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Loa Andersson >>>>> Sent: Thursday, July 31, 2014 8:08 AM >>>>> To: Shah, Himanshu; Sami Boutros (sboutros); Mach Chen >>>>> Cc: rtg-dir@ietf.org; >>>>> draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; >>>>> mpls@ietf.org; rtg-ads@tools.ietf.org >>>>> Subject: Re: [mpls] [RTG-DIR] RtgDir review: >>>>> draft-ietf-mpls-lsp-ping-ttl-tlv- 07.txt >>>>> >>>>> Himanshu, >>>>> >>>>> A request for early allocation need to come from the authors, to >>>>> wg-chairs and ADs. >>>>> >>>>> The draft is through IETF Last call and has been updated, given that >>>>> ADrian is comfortable it will be on the IESG agenda shortly. >>>>> >>>>> IANA has reviewed it and are OK. >>>>> >>>>> Normally I would not ask for early allocation this late in the >>>>> process. >>>>> >>>>> /Loa >>>>> >>>>> On 2014-07-31 01:15, Shah, Himanshu wrote: >>>>>> This draft fills a major shortcoming of the VCCV ping over MS-PW >>>>> (especially if reply mode is in-band). >>>>>> I am not sure why this draft is stuck (i.e. taking too long to go >>>>>> through). >>>>>> >>>>>> Is there a provisional IANA assignment for the TTL TLV type value? >>>>>> >>>>>> Thanks, >>>>>> himanshu >>>>>> >>>>>> -----Original Message----- >>>>>> From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Sami >>>>>> Boutros >>>>>> (sboutros) >>>>>> Sent: Wednesday, July 30, 2014 3:44 PM >>>>>> To: Mach Chen >>>>>> Cc: rtg-dir@ietf.org; mpls@ietf.org; >>>>>> draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; >>>>>> rtg-ads@tools.ietf.org >>>>>> Subject: Re: [mpls] RtgDir review: >>>>>> draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt >>>>>> >>>>>> Resending.. >>>>>> >>>>>> On May 15, 2014, at 9:20 PM, Sami Boutros (sboutros) wrote: >>>>>> >>>>>>>> >>>>>>>> Minor Issues: >>>>>>>> >>>>>>>> 1. Since the TTL TLV is defined for both MS-PW and bidirectional >>>>>>>> co-routed LSP, it should be better to explicitly state this in >>>>>>>> the abstract >>>>> section. >>>>>>>> >>>>>>> >>>>>>> Sami: Sure will do. >>>>>>> >>>>>>>> 2. "LSP-Ping echo request", "LSP-Ping request", "MPLS echo >>>>>>>> request", "echo request" and "request" are interchangeably used >>>>>>>> in the draft, it's better to unify the usage of it to "MPLS echo >>>>>>>> request" (to align with the usage in RFC4379). For "echo reply", >>>>>>>> "bidirectional co-routed LSP", they have the similar issue. >>>>>>>> >>>>>>> >>>>>>> Sami: Ok, will fix that. >>>>>>> >>>>>>>> 3.Section 3.1 >>>>>>>> >>>>>>>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- >>>> + >>>>>>>> | Value | Reserved | >>>>>>>> Flags | >>>>>>>> >>>>>>>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >>>>>>>> >>>>>>>> For the TTL TLV, the value filed should include the "value", >>>>>>>> "Reserved" and "Flags", so it's better to change the "Value" >>>>>>>> field to "TTL" field hence to reduce the confusion. >>>>>>>> >>>>>>> >>>>>>> Sami: Sure. >>>>>>> >>>>>>>> 4. Section 3.2 >>>>>>>> "This TLV shall be included in the echo request by the >>>>>>>> originator of request. The use of this TLV is optional. If a >>>>>>>> receiver does not understand the TTL TLV, it will simply ignore >>>>>>>> the TLV (Type value of TLV is assumed to be in the range of >>>>>>>> optional TLV's which SHOULD be ignored if an implementation does >>>>>>>> not support or >>>> understand them). >>>>>>>> In the absence of TTL TLV or if TTL TLV is ignored by a >>>>>>>> receiver, the determination of the TTL value used in the MPLS >>>>>>>> label on the echo reply is beyond the scope of this document." >>>>>>>> >>>>>>>> What's your mean of "beyond the scope of this document" here? Is >>>>>>>> it to apply the procedures defined in RFC4379 or just let it to >>>>>>>> the implementation?I guess you assume to apply the definition in >>>>>>>> RFC4379, >>>>>>> >>>>>>> Sami: It is out of scope of this document, but for sure procedure >>>>>>> in 4379 >>>>> apply. >>>>>>>> if >>>>>>> >>>>>>>> so, the TTL of the MPLS label will be more probably set to 255, >>>>>>>> means the echo reply will be sent to the ingress of the MS-PW or >>>>>>>> LSP. I am not sure whether this is the right procedure, it seems >>>>>>>> a security issue. IMHO, it does not make any sense to expect the >>>>>>>> receiver to send echo reply in this situation, and even sent, >>>>>>>> the initiator will not receive the reply. The safer way is to >>>>>>>> drop the whole >>>>> echo request and record an error log. >>>>>>> >>>>>>> >>>>>>> Sami: >>>>>>> >>>>>>> We are not saying the receiver must send a reply, however if he >>>>>>> does the reply may be received by the ingress node which might be >>>>>>> the wrong node, since the receiver may not set the TTL properly >>>>>>> on the reply, keep in mind that this is a receiver with an old >>>>>>> implementation and >>>>> the TLV is optional. >>>>>>> >>>>>>> Please refer to the security section for your security concern. >>>>>>> >>>>>>> Sami: >>>>>>> >>>>>>> >>>>>>>> >>>>>>>> 5. Section 3.2 >>>>>>>> >>>>>>>> "In other words, if the value of the TTL provided by this TLV >>>>>>>> does not match the TTL determined by other means, such as >>>>>>>> Switching Point TLV in MS-PW, then TTL TLV must be used." >>>>>>>> Here, it implies that the receiver has to perform TTL matching >>>>>>>> process, since how to set the TTL is independent of such >>>>>>>> matching, seems this sentence is redundant and confusion. >>>>>>>> >>>>>>> >>>>>>> Sami: Are you familiar with the switching point TLV? and what it >>>>> includes? >>>>>>> >>>>>>>> 6. Section 4. >>>>>>>> >>>>>>>> "...The value field of the TTL TLV and the TTL field of the MPLS >>>>>>>> label are set to 2," >>>>>>>> >>>>>>>> I guess that the MPLS Label is the PW label, right? It's better >>>>>>>> to add more text to make this more explicit. In addition, how to >>>>>>>> set the TTL value of the tunnel Label? 255 or any other value? >>>>>>>> >>>>>>> >>>>>>> Sami: The tunnel label TTL is irrelevant here, however we will >>>>>>> make it >>>>> explicit that this is a PW label. >>>>>>> >>>>>>>> 5. Section 4.1. Traceroute mode >>>>>>>> "In the traceroute mode TTL value in the TLV is successively >>>>>>>> set to 1, 2, and so on. This is similar to the TTL values used >>>>>>>> for the label set on the packet." >>>>>>>> IMHO, some text may be needed to clarify which "FEC" should be >>>>>>>> carried, especially for MS-PW trace. Since in Section 4.0, the >>>>>>>> example says the FEC of segment C-D should be carried, does it >>>>>>>> mean the FEC of last PW Segment of the segment under test should >>>>>>>> be carried or the FEC will vary when TTL changed. For example, >>>>>>>> when perform segment trace (e.g., to trace B-D segment), when >>>>>>>> TTL is 1, which >>>>> FEC should be carried? >>>>>>> >>>>>>> Sami: >>>>>>> We are not here redefining a trace route for a MS-PW, we are >>>>>>> describing >>>>> how our extensions will apply. >>>>>>> Sami: >>>>>>> >>>>>>>> >>>>>>>> 6. Section 4.2. Error scenario >>>>>>>> For this scenario, do you need to define some error codes here? >>>>>>> >>>>>>> Sami: >>>>>>> The section describe how to handle the error scenario, there is >>>>>>> no need >>>>> for an error code. >>>>>>> Sami: >>>>>>> >>>>>>>> >>>>>>>> 7. For MS-PW trace, seems that you assume the tunnel is pipe >>>>>>>> mode, if so, it should be explicitly stated. If not, you should >>>>>>>> define how the MS-PW trace works (given that the tunnels in both >>>>>>>> directions may span different hops). >>>>>>> >>>>>>> Sami: >>>>>>> Not sure I get the concern? Again we are not re-defining how >>>>>>> MS-PW >>>>> trace work. >>>>>>> >>>>>>> Thanks, >>>>>>> >>>>>>> Sami >>>>>>>> >>>>>>>> Nits: >>>>>>>> >>>>>>>> 1. Please check the text for acronyms that have not been >>>>>>>> expanded in their first use. >>>>>>>> >>>>>>>> 2. I run the idnits tool and found the following nits, please >>>>>>>> check and fix. >>>>>>>> (See RFCs 3967 and 4897 for information about using normative >>>>>>>> references >>>>>>>> to lower-maturity documents in RFCs) >>>>>>>> >>>>>>>> -- Looks like a reference, but probably isn't: 'RFC2119' on line >>>>>>>> 121 >>>>>>>> >>>>>>>> -- Looks like a reference, but probably isn't: 'RFC4379' on line >>>>>>>> 258 >>>>>>>> >>>>>>>> == Unused Reference: '1' is defined on line 284, but no explicit >>>>>>>> reference >>>>>>>> was found in the text >>>>>>>> >>>>>>>> == Unused Reference: '2' is defined on line 287, but no explicit >>>>>>>> reference >>>>>>>> was found in the text >>>>>>>> >>>>>>>> == Unused Reference: '3' is defined on line 291, but no explicit >>>>>>>> reference >>>>>>>> was found in the text >>>>>>>> >>>>>>>> 3. Section 3.2, >>>>>>>> 3.1 first para first sentence >>>>>>>> s/shall/SHALL >>>>>>>> 3.2 last para, the last second sentence s/must/MUST >>>>>>>> >>>>>>>> 4. The draft quotes the MS-PW and bidirectional co-routed LSP >>>>>>>> concept, it's better to add related references to this document. >>>>>>>> >>>>>>>> >>>>>>>> Best regards, >>>>>>>> Mach >>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> mpls mailing list >>>>>> mpls@ietf.org >>>>>> https://www.ietf.org/mailman/listinfo/mpls >>>>>> >>>>> >>>>> -- >>>>> >>>>> >>>>> Loa Andersson email: loa@mail01.huawei.com >>>>> Senior MPLS Expert loa@pi.nu >>>>> Huawei Technologies (consultant) phone: +46 739 81 21 64 >>>>> >>>>> _______________________________________________ >>>>> mpls mailing list >>>>> mpls@ietf.org >>>>> https://www.ietf.org/mailman/listinfo/mpls >>>> >>>> _______________________________________________ >>>> mpls mailing list >>>> mpls@ietf.org >>>> https://www.ietf.org/mailman/listinfo/mpls > -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Thu Jul 31 07:50:58 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 297C31B28BB; Thu, 31 Jul 2014 07:50:56 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qOzyds3Wt2-B; Thu, 31 Jul 2014 07:50:53 -0700 (PDT) Received: from pipi.pi.nu (pipi.pi.nu [83.168.239.141]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 151681A014C; Thu, 31 Jul 2014 07:50:53 -0700 (PDT) Received: from [192.168.1.133] (81-236-221-144-no93.tbcn.telia.com [81.236.221.144]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: loa@pi.nu) by pipi.pi.nu (Postfix) with ESMTPSA id 8031C1802B19; Thu, 31 Jul 2014 16:50:51 +0200 (CEST) Message-ID: <53DA57CA.8010001@pi.nu> Date: Thu, 31 Jul 2014 16:50:50 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "Shah, Himanshu" , "Sami Boutros (sboutros)" , Mach Chen References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> <53DA3194.4040306@pi.nu> <40746B2300A8FC4AB04EE722A593182B76F4F335@ONWVEXCHMB04.ciena.com> In-Reply-To: <40746B2300A8FC4AB04EE722A593182B76F4F335@ONWVEXCHMB04.ciena.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/kzPqBMP38UOe20UgZq9kmMLofGs Cc: "rtg-dir@ietf.org" , "draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org" , "rtg-ads@tools.ietf.org" , "mpls@ietf.org" Subject: Re: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 14:50:56 -0000 Himanshu, The process is that authors request through a mail to the wg chairs, chairs initiate this by a mail to IANA and the ADs. Get an author to send the request to wg-chairs. /Loa On 2014-07-31 15:14, Shah, Himanshu wrote: > Thanks Loa. > Early allocation request could have been made much earlier, but that is water under the bridge now. > I would still favor requesting for provisional IANA code allocation now. > This would allow interoperability of the ongoing implementations. > > /himanshu > > -----Original Message----- > From: Loa Andersson [mailto:loa@pi.nu] > Sent: Thursday, July 31, 2014 8:08 AM > To: Shah, Himanshu; Sami Boutros (sboutros); Mach Chen > Cc: rtg-dir@ietf.org; draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; rtg-ads@tools.ietf.org; mpls@ietf.org > Subject: Re: [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt > > Himanshu, > > A request for early allocation need to come from the authors, to wg-chairs and ADs. > > The draft is through IETF Last call and has been updated, given that ADrian is comfortable it will be on the IESG agenda shortly. > > IANA has reviewed it and are OK. > > Normally I would not ask for early allocation this late in the process. > > /Loa > > On 2014-07-31 01:15, Shah, Himanshu wrote: >> This draft fills a major shortcoming of the VCCV ping over MS-PW (especially if reply mode is in-band). >> I am not sure why this draft is stuck (i.e. taking too long to go through). >> >> Is there a provisional IANA assignment for the TTL TLV type value? >> >> Thanks, >> himanshu >> >> -----Original Message----- >> From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Sami Boutros >> (sboutros) >> Sent: Wednesday, July 30, 2014 3:44 PM >> To: Mach Chen >> Cc: rtg-dir@ietf.org; mpls@ietf.org; >> draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; >> rtg-ads@tools.ietf.org >> Subject: Re: [mpls] RtgDir review: >> draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt >> >> Resending.. >> >> On May 15, 2014, at 9:20 PM, Sami Boutros (sboutros) wrote: >> >>>> >>>> Minor Issues: >>>> >>>> 1. Since the TTL TLV is defined for both MS-PW and bidirectional >>>> co-routed LSP, it should be better to explicitly state this in the abstract section. >>>> >>> >>> Sami: Sure will do. >>> >>>> 2. "LSP-Ping echo request", "LSP-Ping request", "MPLS echo request", >>>> "echo request" and "request" are interchangeably used in the draft, >>>> it's better to unify the usage of it to "MPLS echo request" (to >>>> align with the usage in RFC4379). For "echo reply", "bidirectional >>>> co-routed LSP", they have the similar issue. >>>> >>> >>> Sami: Ok, will fix that. >>> >>>> 3.Section 3.1 >>>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >>>> | Value | Reserved | Flags | >>>> >>>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >>>> >>>> For the TTL TLV, the value filed should include the "value", >>>> "Reserved" and "Flags", so it's better to change the "Value" field >>>> to "TTL" field hence to reduce the confusion. >>>> >>> >>> Sami: Sure. >>> >>>> 4. Section 3.2 >>>> "This TLV shall be included in the echo request by the originator of >>>> request. The use of this TLV is optional. If a receiver does not >>>> understand the TTL TLV, it will simply ignore the TLV (Type value of >>>> TLV is assumed to be in the range of optional TLV's which SHOULD be >>>> ignored if an implementation does not support or understand them). >>>> In the absence of TTL TLV or if TTL TLV is ignored by a receiver, >>>> the determination of the TTL value used in the MPLS label on the >>>> echo reply is beyond the scope of this document." >>>> >>>> What's your mean of "beyond the scope of this document" here? Is it >>>> to apply the procedures defined in RFC4379 or just let it to the >>>> implementation?I guess you assume to apply the definition in >>>> RFC4379, >>> >>> Sami: It is out of scope of this document, but for sure procedure in 4379 apply. >>>> if >>> >>>> so, the TTL of the MPLS label will be more probably set to 255, >>>> means the echo reply will be sent to the ingress of the MS-PW or >>>> LSP. I am not sure whether this is the right procedure, it seems a >>>> security issue. IMHO, it does not make any sense to expect the >>>> receiver to send echo reply in this situation, and even sent, the >>>> initiator will not receive the reply. The safer way is to drop the whole echo request and record an error log. >>> >>> >>> Sami: >>> >>> We are not saying the receiver must send a reply, however if he does >>> the reply may be received by the ingress node which might be the >>> wrong node, since the receiver may not set the TTL properly on the >>> reply, keep in mind that this is a receiver with an old implementation and the TLV is optional. >>> >>> Please refer to the security section for your security concern. >>> >>> Sami: >>> >>> >>>> >>>> 5. Section 3.2 >>>> >>>> "In other words, if the value of the TTL provided by this TLV does >>>> not match the TTL determined by other means, such as Switching >>>> Point TLV in MS-PW, then TTL TLV must be used." >>>> Here, it implies that the receiver has to perform TTL matching >>>> process, since how to set the TTL is independent of such matching, >>>> seems this sentence is redundant and confusion. >>>> >>> >>> Sami: Are you familiar with the switching point TLV? and what it includes? >>> >>>> 6. Section 4. >>>> >>>> "...The value field of the TTL TLV and the TTL field of the MPLS >>>> label are set to 2," >>>> >>>> I guess that the MPLS Label is the PW label, right? It's better to >>>> add more text to make this more explicit. In addition, how to set >>>> the TTL value of the tunnel Label? 255 or any other value? >>>> >>> >>> Sami: The tunnel label TTL is irrelevant here, however we will make it explicit that this is a PW label. >>> >>>> 5. Section 4.1. Traceroute mode >>>> "In the traceroute mode TTL value in the TLV is successively set >>>> to 1, 2, and so on. This is similar to the TTL values used for the >>>> label set on the packet." >>>> IMHO, some text may be needed to clarify which "FEC" should be >>>> carried, especially for MS-PW trace. Since in Section 4.0, the >>>> example says the FEC of segment C-D should be carried, does it mean >>>> the FEC of last PW Segment of the segment under test should be >>>> carried or the FEC will vary when TTL changed. For example, when >>>> perform segment trace (e.g., to trace B-D segment), when TTL is 1, which FEC should be carried? >>> >>> Sami: >>> We are not here redefining a trace route for a MS-PW, we are describing how our extensions will apply. >>> Sami: >>> >>>> >>>> 6. Section 4.2. Error scenario >>>> For this scenario, do you need to define some error codes here? >>> >>> Sami: >>> The section describe how to handle the error scenario, there is no need for an error code. >>> Sami: >>> >>>> >>>> 7. For MS-PW trace, seems that you assume the tunnel is pipe mode, >>>> if so, it should be explicitly stated. If not, you should define how >>>> the MS-PW trace works (given that the tunnels in both directions may >>>> span different hops). >>> >>> Sami: >>> Not sure I get the concern? Again we are not re-defining how MS-PW trace work. >>> >>> Thanks, >>> >>> Sami >>>> >>>> Nits: >>>> >>>> 1. Please check the text for acronyms that have not been expanded in >>>> their first use. >>>> >>>> 2. I run the idnits tool and found the following nits, please check >>>> and fix. >>>> (See RFCs 3967 and 4897 for information about using normative >>>> references >>>> to lower-maturity documents in RFCs) >>>> >>>> -- Looks like a reference, but probably isn't: 'RFC2119' on line 121 >>>> >>>> -- Looks like a reference, but probably isn't: 'RFC4379' on line 258 >>>> >>>> == Unused Reference: '1' is defined on line 284, but no explicit >>>> reference >>>> was found in the text >>>> >>>> == Unused Reference: '2' is defined on line 287, but no explicit >>>> reference >>>> was found in the text >>>> >>>> == Unused Reference: '3' is defined on line 291, but no explicit >>>> reference >>>> was found in the text >>>> >>>> 3. Section 3.2, >>>> 3.1 first para first sentence >>>> s/shall/SHALL >>>> 3.2 last para, the last second sentence s/must/MUST >>>> >>>> 4. The draft quotes the MS-PW and bidirectional co-routed LSP >>>> concept, it's better to add related references to this document. >>>> >>>> >>>> Best regards, >>>> Mach >>>> >>>> >>> >> >> _______________________________________________ >> mpls mailing list >> mpls@ietf.org >> https://www.ietf.org/mailman/listinfo/mpls >> > -- Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Thu Jul 31 07:51:37 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E51DD1B283B; Thu, 31 Jul 2014 07:51:30 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -114.502 X-Spam-Level: X-Spam-Status: No, score=-114.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hJ0KWcKVnzXp; Thu, 31 Jul 2014 07:51:23 -0700 (PDT) Received: from rcdn-iport-7.cisco.com (rcdn-iport-7.cisco.com [173.37.86.78]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 18C451B2909; Thu, 31 Jul 2014 07:51:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=14800; q=dns/txt; s=iport; t=1406818283; x=1408027883; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=IAHTfn8Nvfdn1PaOEOJmYkau9W6yBoVKLwT/g5ZkpMk=; b=jfdYgAs655+9XZJzhNaSWceBHufx07zthq5b+xTh3SnSduZngq+nWSVc P7IriSd73sWWaAykYsvpGCZdiSqEnH+FdtkEcPPYU2U4Py6MZfD4g71dV PPg8Gh4XnNg+3eM/IPdxIjhXa6Bn0dgYuVNlCl4IgKVGe7RPQAc+q2lVP M=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Ai0FALtX2lOtJV2c/2dsb2JhbABZgmokUlcEyn8jCodLAYEGFneEAwEBAQEDAQEBNy0EAwsMAgICAQgRBAEBAQoUCQcbDAsUCQgCBAENBQiIOgEMvCATBASJe4RrEAIBHjEHBoMpgRsFjmWPDpJEg0lsAYECBzs X-IronPort-AV: E=Sophos;i="5.01,772,1400025600"; d="scan'208";a="344126695" Received: from rcdn-core-5.cisco.com ([173.37.93.156]) by rcdn-iport-7.cisco.com with ESMTP; 31 Jul 2014 14:51:02 +0000 Received: from xhc-aln-x09.cisco.com (xhc-aln-x09.cisco.com [173.36.12.83]) by rcdn-core-5.cisco.com (8.14.5/8.14.5) with ESMTP id s6VEp2nD016171 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Thu, 31 Jul 2014 14:51:02 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-aln-x09.cisco.com ([173.36.12.83]) with mapi id 14.03.0123.003; Thu, 31 Jul 2014 09:51:01 -0500 From: "Nobo Akiya (nobo)" To: Loa Andersson , Alexander Vainshtein Thread-Topic: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt Thread-Index: AQHPrMlKRtb0V4c6eEO/q10Vgbo2Opu6OslQgABXKgCAAAQ+gP//rTIA Date: Thu, 31 Jul 2014 14:51:01 +0000 Message-ID: References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> <53DA3194.4040306@pi.nu> <7adbcb851e224adbbd93416e5932b618@AM3PR03MB612.eurprd03.prod.outlook.com> <53DA52D0.8030206@pi.nu> <53DA565F.3030906@pi.nu> In-Reply-To: <53DA565F.3030906@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [161.44.212.70] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/bvftu_F2JXUU9DRIrNQP8uDyuWw Cc: "rtg-dir@ietf.org" , "rtg-ads@tools.ietf.org" , "Sami Boutros \(sboutros\)" , "draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org" , "mpls@ietf.org" Subject: Re: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 14:51:31 -0000 Hi Loa, Sorry about the confusion. I was requesting for a specific value to be allo= cated when the document progresses. But you are right, a better approach wo= uld be to initiate early IANA allocation to reserve that specific value, wh= ich should come from authors. I will reach out to the authors to send you an official request for early = IANA allocation with specific value (0x8001) for the TTL TLV. Thanks! -Nobo > -----Original Message----- > From: Loa Andersson [mailto:loa@pi.nu] > Sent: Thursday, July 31, 2014 10:45 AM > To: Nobo Akiya (nobo); Alexander Vainshtein > Cc: rtg-dir@ietf.org; mpls@ietf.org; Sami Boutros (sboutros); rtg- > ads@tools.ietf.org; draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org > Subject: Re: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl= -tlv- > 07.txt >=20 > Nobo, >=20 > dam it - you are not an author of this document, so you can't request the > early allocation. If you think we should do it, tell one of the authors t= o send > me a mail. >=20 > /Loa >=20 > On 2014-07-31 16:29, Loa Andersson wrote: > > Nobo, > > > > If that is what you want, I can initiate the procedure to allocate > > that code point. > > > > /Loa > > > > On 2014-07-31 16:20, Nobo Akiya (nobo) wrote: > >> Hi Sasha, > >> > >> I wish that was the case :) > >> > >> https://www.iana.org/assignments/mpls-lsp-ping-parameters/mpls-lsp- > pi > >> ng-parameters.xhtml#tlvs > >> > >> > >> 32768-49161 > >> Standards Action > >> This range is for optional TLVs that can be silently dropped if not > >> recognized. > >> > >> Thanks, > >> Nobo > >> > >>> -----Original Message----- > >>> From: Alexander Vainshtein > [mailto:Alexander.Vainshtein@ecitele.com] > >>> Sent: Thursday, July 31, 2014 10:11 AM > >>> To: Nobo Akiya (nobo) > >>> Cc: rtg-dir@ietf.org; > >>> draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; rtg- > >>> ads@tools.ietf.org; mpls@ietf.org; Loa Andersson; Shah, Himanshu; > >>> Sami Boutros (sboutros); Mach Chen > >>> Subject: RE: [mpls] [RTG-DIR] RtgDir review: > >>> draft-ietf-mpls-lsp-ping-ttl-tlv- > >>> 07.txt > >>> > >>> Nobo, and all, > >>> 0x8001 =3D 32769 falls in the "Unassigned" range of TLVs for LSP Ping= . > >>> I think > >>> that it has been considered as safe enough to use by the implementers= . > >>> Somehow the relevant IANA registry does not provide any values for > >>> experimental use. > >>> > >>> My 2c, > >>> Sasha > >>> Email: Alexander.Vainshtein@ecitele.com > >>> Mobile: 054-9266302 > >>> > >>>> -----Original Message----- > >>>> From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Nobo Akiya > >>>> (nobo) > >>>> Sent: Thursday, July 31, 2014 4:16 PM > >>>> To: Loa Andersson; Shah, Himanshu; Sami Boutros (sboutros); Mach > >>>> Chen > >>>> Cc: rtg-dir@ietf.org; > >>>> draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; rtg- > >>>> ads@tools.ietf.org; mpls@ietf.org > >>>> Subject: Re: [mpls] [RTG-DIR] RtgDir review: > >>>> draft-ietf-mpls-lsp-ping-ttl-tlv- 07.txt > >>>> > >>>> Hi Loa, Authors, > >>>> > >>>> The code base which I'm familiar with already have shipped > >>>> implementation of the TTL TLV, and it appears that the Type=3D0x8001 > >>>> is > >>> being used. > >>>> > >>>> I do not have the knowledge of why this value was used in this > >>>> implementation without doing early IANA allocation for the TTL TLV > >>>> code point. > >>>> > >>>> If usage of Type=3D0x8001 as the TTL TLV does not conflict with any > >>>> other implementations out there, is it possible to ask IANA to > >>>> assign this value > >>>> (0x8001) when the document progresses? > >>>> > >>>> My apologies for causing extra burden on the authors, the Shepherd > >>>> and the ADs. > >>>> > >>>> But I truly hope that this request can be accommodated. > >>>> > >>>> Thanks! > >>>> > >>>> -Nobo > >>>> > >>>>> -----Original Message----- > >>>>> From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Loa > >>>>> Andersson > >>>>> Sent: Thursday, July 31, 2014 8:08 AM > >>>>> To: Shah, Himanshu; Sami Boutros (sboutros); Mach Chen > >>>>> Cc: rtg-dir@ietf.org; > >>>>> draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; > >>>>> mpls@ietf.org; rtg-ads@tools.ietf.org > >>>>> Subject: Re: [mpls] [RTG-DIR] RtgDir review: > >>>>> draft-ietf-mpls-lsp-ping-ttl-tlv- 07.txt > >>>>> > >>>>> Himanshu, > >>>>> > >>>>> A request for early allocation need to come from the authors, to > >>>>> wg-chairs and ADs. > >>>>> > >>>>> The draft is through IETF Last call and has been updated, given > >>>>> that ADrian is comfortable it will be on the IESG agenda shortly. > >>>>> > >>>>> IANA has reviewed it and are OK. > >>>>> > >>>>> Normally I would not ask for early allocation this late in the > >>>>> process. > >>>>> > >>>>> /Loa > >>>>> > >>>>> On 2014-07-31 01:15, Shah, Himanshu wrote: > >>>>>> This draft fills a major shortcoming of the VCCV ping over MS-PW > >>>>> (especially if reply mode is in-band). > >>>>>> I am not sure why this draft is stuck (i.e. taking too long to go > >>>>>> through). > >>>>>> > >>>>>> Is there a provisional IANA assignment for the TTL TLV type value? > >>>>>> > >>>>>> Thanks, > >>>>>> himanshu > >>>>>> > >>>>>> -----Original Message----- > >>>>>> From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Sami > >>>>>> Boutros > >>>>>> (sboutros) > >>>>>> Sent: Wednesday, July 30, 2014 3:44 PM > >>>>>> To: Mach Chen > >>>>>> Cc: rtg-dir@ietf.org; mpls@ietf.org; > >>>>>> draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; > >>>>>> rtg-ads@tools.ietf.org > >>>>>> Subject: Re: [mpls] RtgDir review: > >>>>>> draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt > >>>>>> > >>>>>> Resending.. > >>>>>> > >>>>>> On May 15, 2014, at 9:20 PM, Sami Boutros (sboutros) wrote: > >>>>>> > >>>>>>>> > >>>>>>>> Minor Issues: > >>>>>>>> > >>>>>>>> 1. Since the TTL TLV is defined for both MS-PW and > >>>>>>>> bidirectional co-routed LSP, it should be better to explicitly > >>>>>>>> state this in the abstract > >>>>> section. > >>>>>>>> > >>>>>>> > >>>>>>> Sami: Sure will do. > >>>>>>> > >>>>>>>> 2. "LSP-Ping echo request", "LSP-Ping request", "MPLS echo > >>>>>>>> request", "echo request" and "request" are interchangeably used > >>>>>>>> in the draft, it's better to unify the usage of it to "MPLS > >>>>>>>> echo request" (to align with the usage in RFC4379). For "echo > >>>>>>>> reply", "bidirectional co-routed LSP", they have the similar iss= ue. > >>>>>>>> > >>>>>>> > >>>>>>> Sami: Ok, will fix that. > >>>>>>> > >>>>>>>> 3.Section 3.1 > >>>>>>>> > >>>>>>>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- > >>>> + > >>>>>>>> | Value | Reserved | > >>>>>>>> Flags | > >>>>>>>> > >>>>>>>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= + > >>>>>>>> > >>>>>>>> For the TTL TLV, the value filed should include the "value", > >>>>>>>> "Reserved" and "Flags", so it's better to change the "Value" > >>>>>>>> field to "TTL" field hence to reduce the confusion. > >>>>>>>> > >>>>>>> > >>>>>>> Sami: Sure. > >>>>>>> > >>>>>>>> 4. Section 3.2 > >>>>>>>> "This TLV shall be included in the echo request by the > >>>>>>>> originator of request. The use of this TLV is optional. If a > >>>>>>>> receiver does not understand the TTL TLV, it will simply ignore > >>>>>>>> the TLV (Type value of TLV is assumed to be in the range of > >>>>>>>> optional TLV's which SHOULD be ignored if an implementation > >>>>>>>> does not support or > >>>> understand them). > >>>>>>>> In the absence of TTL TLV or if TTL TLV is ignored by a > >>>>>>>> receiver, the determination of the TTL value used in the MPLS > >>>>>>>> label on the echo reply is beyond the scope of this document." > >>>>>>>> > >>>>>>>> What's your mean of "beyond the scope of this document" here? > >>>>>>>> Is it to apply the procedures defined in RFC4379 or just let it > >>>>>>>> to the implementation?I guess you assume to apply the > >>>>>>>> definition in RFC4379, > >>>>>>> > >>>>>>> Sami: It is out of scope of this document, but for sure > >>>>>>> procedure in 4379 > >>>>> apply. > >>>>>>>> if > >>>>>>> > >>>>>>>> so, the TTL of the MPLS label will be more probably set to 255, > >>>>>>>> means the echo reply will be sent to the ingress of the MS-PW > >>>>>>>> or LSP. I am not sure whether this is the right procedure, it > >>>>>>>> seems a security issue. IMHO, it does not make any sense to > >>>>>>>> expect the receiver to send echo reply in this situation, and > >>>>>>>> even sent, the initiator will not receive the reply. The safer > >>>>>>>> way is to drop the whole > >>>>> echo request and record an error log. > >>>>>>> > >>>>>>> > >>>>>>> Sami: > >>>>>>> > >>>>>>> We are not saying the receiver must send a reply, however if he > >>>>>>> does the reply may be received by the ingress node which might > >>>>>>> be the wrong node, since the receiver may not set the TTL > >>>>>>> properly on the reply, keep in mind that this is a receiver with > >>>>>>> an old implementation and > >>>>> the TLV is optional. > >>>>>>> > >>>>>>> Please refer to the security section for your security concern. > >>>>>>> > >>>>>>> Sami: > >>>>>>> > >>>>>>> > >>>>>>>> > >>>>>>>> 5. Section 3.2 > >>>>>>>> > >>>>>>>> "In other words, if the value of the TTL provided by this TLV > >>>>>>>> does not match the TTL determined by other means, such as > >>>>>>>> Switching Point TLV in MS-PW, then TTL TLV must be used." > >>>>>>>> Here, it implies that the receiver has to perform TTL matching > >>>>>>>> process, since how to set the TTL is independent of such > >>>>>>>> matching, seems this sentence is redundant and confusion. > >>>>>>>> > >>>>>>> > >>>>>>> Sami: Are you familiar with the switching point TLV? and what it > >>>>> includes? > >>>>>>> > >>>>>>>> 6. Section 4. > >>>>>>>> > >>>>>>>> "...The value field of the TTL TLV and the TTL field of the > >>>>>>>> MPLS label are set to 2," > >>>>>>>> > >>>>>>>> I guess that the MPLS Label is the PW label, right? It's better > >>>>>>>> to add more text to make this more explicit. In addition, how > >>>>>>>> to set the TTL value of the tunnel Label? 255 or any other value= ? > >>>>>>>> > >>>>>>> > >>>>>>> Sami: The tunnel label TTL is irrelevant here, however we will > >>>>>>> make it > >>>>> explicit that this is a PW label. > >>>>>>> > >>>>>>>> 5. Section 4.1. Traceroute mode > >>>>>>>> "In the traceroute mode TTL value in the TLV is successively > >>>>>>>> set to 1, 2, and so on. This is similar to the TTL values used > >>>>>>>> for the label set on the packet." > >>>>>>>> IMHO, some text may be needed to clarify which "FEC" should be > >>>>>>>> carried, especially for MS-PW trace. Since in Section 4.0, the > >>>>>>>> example says the FEC of segment C-D should be carried, does it > >>>>>>>> mean the FEC of last PW Segment of the segment under test > >>>>>>>> should be carried or the FEC will vary when TTL changed. For > >>>>>>>> example, when perform segment trace (e.g., to trace B-D > >>>>>>>> segment), when TTL is 1, which > >>>>> FEC should be carried? > >>>>>>> > >>>>>>> Sami: > >>>>>>> We are not here redefining a trace route for a MS-PW, we are > >>>>>>> describing > >>>>> how our extensions will apply. > >>>>>>> Sami: > >>>>>>> > >>>>>>>> > >>>>>>>> 6. Section 4.2. Error scenario > >>>>>>>> For this scenario, do you need to define some error codes here? > >>>>>>> > >>>>>>> Sami: > >>>>>>> The section describe how to handle the error scenario, there is > >>>>>>> no need > >>>>> for an error code. > >>>>>>> Sami: > >>>>>>> > >>>>>>>> > >>>>>>>> 7. For MS-PW trace, seems that you assume the tunnel is pipe > >>>>>>>> mode, if so, it should be explicitly stated. If not, you should > >>>>>>>> define how the MS-PW trace works (given that the tunnels in > >>>>>>>> both directions may span different hops). > >>>>>>> > >>>>>>> Sami: > >>>>>>> Not sure I get the concern? Again we are not re-defining how > >>>>>>> MS-PW > >>>>> trace work. > >>>>>>> > >>>>>>> Thanks, > >>>>>>> > >>>>>>> Sami > >>>>>>>> > >>>>>>>> Nits: > >>>>>>>> > >>>>>>>> 1. Please check the text for acronyms that have not been > >>>>>>>> expanded in their first use. > >>>>>>>> > >>>>>>>> 2. I run the idnits tool and found the following nits, please > >>>>>>>> check and fix. > >>>>>>>> (See RFCs 3967 and 4897 for information about using > >>>>>>>> normative references > >>>>>>>> to lower-maturity documents in RFCs) > >>>>>>>> > >>>>>>>> -- Looks like a reference, but probably isn't: 'RFC2119' on > >>>>>>>> line > >>>>>>>> 121 > >>>>>>>> > >>>>>>>> -- Looks like a reference, but probably isn't: 'RFC4379' on > >>>>>>>> line > >>>>>>>> 258 > >>>>>>>> > >>>>>>>> =3D=3D Unused Reference: '1' is defined on line 284, but no > >>>>>>>> explicit reference > >>>>>>>> was found in the text > >>>>>>>> > >>>>>>>> =3D=3D Unused Reference: '2' is defined on line 287, but no > >>>>>>>> explicit reference > >>>>>>>> was found in the text > >>>>>>>> > >>>>>>>> =3D=3D Unused Reference: '3' is defined on line 291, but no > >>>>>>>> explicit reference > >>>>>>>> was found in the text > >>>>>>>> > >>>>>>>> 3. Section 3.2, > >>>>>>>> 3.1 first para first sentence > >>>>>>>> s/shall/SHALL > >>>>>>>> 3.2 last para, the last second sentence s/must/MUST > >>>>>>>> > >>>>>>>> 4. The draft quotes the MS-PW and bidirectional co-routed LSP > >>>>>>>> concept, it's better to add related references to this document. > >>>>>>>> > >>>>>>>> > >>>>>>>> Best regards, > >>>>>>>> Mach > >>>>>>>> > >>>>>>>> > >>>>>>> > >>>>>> > >>>>>> _______________________________________________ > >>>>>> mpls mailing list > >>>>>> mpls@ietf.org > >>>>>> https://www.ietf.org/mailman/listinfo/mpls > >>>>>> > >>>>> > >>>>> -- > >>>>> > >>>>> > >>>>> Loa Andersson email: loa@mail01.huawei.com > >>>>> Senior MPLS Expert loa@pi.nu > >>>>> Huawei Technologies (consultant) phone: +46 739 81 21 64 > >>>>> > >>>>> _______________________________________________ > >>>>> mpls mailing list > >>>>> mpls@ietf.org > >>>>> https://www.ietf.org/mailman/listinfo/mpls > >>>> > >>>> _______________________________________________ > >>>> mpls mailing list > >>>> mpls@ietf.org > >>>> https://www.ietf.org/mailman/listinfo/mpls > > >=20 > -- >=20 >=20 > Loa Andersson email: loa@mail01.huawei.com > Senior MPLS Expert loa@pi.nu > Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Thu Jul 31 07:53:36 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id EA02C1B291E; Thu, 31 Jul 2014 07:53:31 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.267 X-Spam-Level: X-Spam-Status: No, score=-2.267 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, IP_NOT_FRIENDLY=0.334, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id UrO3cT1oLoJa; Thu, 31 Jul 2014 07:53:28 -0700 (PDT) Received: from mx0a-00103a01.pphosted.com (mx0a-00103a01.pphosted.com [67.231.144.234]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 67F8F1B2918; Thu, 31 Jul 2014 07:53:28 -0700 (PDT) Received: from pps.filterd (m0000419.ppops.net [127.0.0.1]) by mx0a-00103a01.pphosted.com (8.14.5/8.14.5) with SMTP id s6VEoAqF028447; Thu, 31 Jul 2014 10:53:18 -0400 Received: from vawvcgsie2k1302.ciena.com (LIN1-118-36-36.ciena.com [63.118.36.36]) by mx0a-00103a01.pphosted.com with ESMTP id 1nfnvjgk8a-1 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=NOT); Thu, 31 Jul 2014 10:53:18 -0400 Received: from ONWVEXCHHT02.ciena.com (10.128.6.17) by VAWVCGSIE2K1302.ciena.com (10.4.62.16) with Microsoft SMTP Server (TLS) id 15.0.847.32; Thu, 31 Jul 2014 10:53:16 -0400 Received: from ONWVEXCHMB04.ciena.com ([::1]) by ONWVEXCHHT02.ciena.com ([::1]) with mapi; Thu, 31 Jul 2014 10:53:15 -0400 From: "Shah, Himanshu" To: Loa Andersson , "Sami Boutros (sboutros)" , Mach Chen Date: Thu, 31 Jul 2014 10:53:13 -0400 Thread-Topic: [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt Thread-Index: Ac+szuADwTKMkNEOSJ2wl6PorYcynAAABCWg Message-ID: <40746B2300A8FC4AB04EE722A593182B76F4F480@ONWVEXCHMB04.ciena.com> References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> <53DA3194.4040306@pi.nu> <40746B2300A8FC4AB04EE722A593182B76F4F335@ONWVEXCHMB04.ciena.com> <53DA57CA.8010001@pi.nu> In-Reply-To: <53DA57CA.8010001@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.12.52, 1.0.27, 0.0.0000 definitions=2014-07-31_05:2014-07-30,2014-07-31,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=7.0.1-1402240000 definitions=main-1407310186 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/1qFb3ZPr4osbopE2lLtl7D_eATM Cc: "rtg-dir@ietf.org" , "draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org" , "rtg-ads@tools.ietf.org" , "mpls@ietf.org" Subject: Re: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 14:53:32 -0000 Sure. Thanks Loa.. (this is IETF.. we shouldn't get hung up on process thingy... :-)) /himanshu -----Original Message----- From: Loa Andersson [mailto:loa@pi.nu]=20 Sent: Thursday, July 31, 2014 10:51 AM To: Shah, Himanshu; Sami Boutros (sboutros); Mach Chen Cc: rtg-dir@ietf.org; draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; = mpls@ietf.org; rtg-ads@tools.ietf.org Subject: Re: [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.t= xt Himanshu, The process is that authors request through a mail to the wg chairs, chairs= initiate this by a mail to IANA and the ADs. Get an author to send the request to wg-chairs. /Loa On 2014-07-31 15:14, Shah, Himanshu wrote: > Thanks Loa. > Early allocation request could have been made much earlier, but that is w= ater under the bridge now. > I would still favor requesting for provisional IANA code allocation now. > This would allow interoperability of the ongoing implementations. > > /himanshu > > -----Original Message----- > From: Loa Andersson [mailto:loa@pi.nu] > Sent: Thursday, July 31, 2014 8:08 AM > To: Shah, Himanshu; Sami Boutros (sboutros); Mach Chen > Cc: rtg-dir@ietf.org;=20 > draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org;=20 > rtg-ads@tools.ietf.org; mpls@ietf.org > Subject: Re: [RTG-DIR] RtgDir review:=20 > draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt > > Himanshu, > > A request for early allocation need to come from the authors, to wg-chair= s and ADs. > > The draft is through IETF Last call and has been updated, given that ADri= an is comfortable it will be on the IESG agenda shortly. > > IANA has reviewed it and are OK. > > Normally I would not ask for early allocation this late in the process. > > /Loa > > On 2014-07-31 01:15, Shah, Himanshu wrote: >> This draft fills a major shortcoming of the VCCV ping over MS-PW (especi= ally if reply mode is in-band). >> I am not sure why this draft is stuck (i.e. taking too long to go throug= h). >> >> Is there a provisional IANA assignment for the TTL TLV type value? >> >> Thanks, >> himanshu >> >> -----Original Message----- >> From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Sami Boutros >> (sboutros) >> Sent: Wednesday, July 30, 2014 3:44 PM >> To: Mach Chen >> Cc: rtg-dir@ietf.org; mpls@ietf.org; >> draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; >> rtg-ads@tools.ietf.org >> Subject: Re: [mpls] RtgDir review: >> draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt >> >> Resending.. >> >> On May 15, 2014, at 9:20 PM, Sami Boutros (sboutros) wrote: >> >>>> >>>> Minor Issues: >>>> >>>> 1. Since the TTL TLV is defined for both MS-PW and bidirectional=20 >>>> co-routed LSP, it should be better to explicitly state this in the abs= tract section. >>>> >>> >>> Sami: Sure will do. >>> >>>> 2. "LSP-Ping echo request", "LSP-Ping request", "MPLS echo=20 >>>> request", "echo request" and "request" are interchangeably used in=20 >>>> the draft, it's better to unify the usage of it to "MPLS echo=20 >>>> request" (to align with the usage in RFC4379). For "echo reply",=20 >>>> "bidirectional co-routed LSP", they have the similar issue. >>>> >>> >>> Sami: Ok, will fix that. >>> >>>> 3.Section 3.1 >>>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-= + >>>> | Value | Reserved | Flags | >>>> >>>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >>>> >>>> For the TTL TLV, the value filed should include the "value",=20 >>>> "Reserved" and "Flags", so it's better to change the "Value" field=20 >>>> to "TTL" field hence to reduce the confusion. >>>> >>> >>> Sami: Sure. >>> >>>> 4. Section 3.2 >>>> "This TLV shall be included in the echo request by the originator=20 >>>> of request. The use of this TLV is optional. If a receiver does not=20 >>>> understand the TTL TLV, it will simply ignore the TLV (Type value=20 >>>> of TLV is assumed to be in the range of optional TLV's which SHOULD=20 >>>> be ignored if an implementation does not support or understand them). >>>> In the absence of TTL TLV or if TTL TLV is ignored by a receiver,=20 >>>> the determination of the TTL value used in the MPLS label on the=20 >>>> echo reply is beyond the scope of this document." >>>> >>>> What's your mean of "beyond the scope of this document" here? Is it=20 >>>> to apply the procedures defined in RFC4379 or just let it to the=20 >>>> implementation?I guess you assume to apply the definition in=20 >>>> RFC4379, >>> >>> Sami: It is out of scope of this document, but for sure procedure in 43= 79 apply. >>>> if >>> >>>> so, the TTL of the MPLS label will be more probably set to 255,=20 >>>> means the echo reply will be sent to the ingress of the MS-PW or=20 >>>> LSP. I am not sure whether this is the right procedure, it seems a=20 >>>> security issue. IMHO, it does not make any sense to expect the=20 >>>> receiver to send echo reply in this situation, and even sent, the=20 >>>> initiator will not receive the reply. The safer way is to drop the who= le echo request and record an error log. >>> >>> >>> Sami: >>> >>> We are not saying the receiver must send a reply, however if he does=20 >>> the reply may be received by the ingress node which might be the=20 >>> wrong node, since the receiver may not set the TTL properly on the=20 >>> reply, keep in mind that this is a receiver with an old implementation = and the TLV is optional. >>> >>> Please refer to the security section for your security concern. >>> >>> Sami: >>> >>> >>>> >>>> 5. Section 3.2 >>>> >>>> "In other words, if the value of the TTL provided by this TLV does=20 >>>> not match the TTL determined by other means, such as Switching=20 >>>> Point TLV in MS-PW, then TTL TLV must be used." >>>> Here, it implies that the receiver has to perform TTL matching=20 >>>> process, since how to set the TTL is independent of such matching,=20 >>>> seems this sentence is redundant and confusion. >>>> >>> >>> Sami: Are you familiar with the switching point TLV? and what it includ= es? >>> >>>> 6. Section 4. >>>> >>>> "...The value field of the TTL TLV and the TTL field of the MPLS=20 >>>> label are set to 2," >>>> >>>> I guess that the MPLS Label is the PW label, right? It's better to=20 >>>> add more text to make this more explicit. In addition, how to set=20 >>>> the TTL value of the tunnel Label? 255 or any other value? >>>> >>> >>> Sami: The tunnel label TTL is irrelevant here, however we will make it = explicit that this is a PW label. >>> >>>> 5. Section 4.1. Traceroute mode >>>> "In the traceroute mode TTL value in the TLV is successively set=20 >>>> to 1, 2, and so on. This is similar to the TTL values used for the=20 >>>> label set on the packet." >>>> IMHO, some text may be needed to clarify which "FEC" should be=20 >>>> carried, especially for MS-PW trace. Since in Section 4.0, the=20 >>>> example says the FEC of segment C-D should be carried, does it mean=20 >>>> the FEC of last PW Segment of the segment under test should be=20 >>>> carried or the FEC will vary when TTL changed. For example, when=20 >>>> perform segment trace (e.g., to trace B-D segment), when TTL is 1, whi= ch FEC should be carried? >>> >>> Sami: >>> We are not here redefining a trace route for a MS-PW, we are describin= g how our extensions will apply. >>> Sami: >>> >>>> >>>> 6. Section 4.2. Error scenario >>>> For this scenario, do you need to define some error codes here? >>> >>> Sami: >>> The section describe how to handle the error scenario, there is no need= for an error code. >>> Sami: >>> >>>> >>>> 7. For MS-PW trace, seems that you assume the tunnel is pipe mode,=20 >>>> if so, it should be explicitly stated. If not, you should define=20 >>>> how the MS-PW trace works (given that the tunnels in both=20 >>>> directions may span different hops). >>> >>> Sami: >>> Not sure I get the concern? Again we are not re-defining how MS-PW trac= e work. >>> >>> Thanks, >>> >>> Sami >>>> >>>> Nits: >>>> >>>> 1. Please check the text for acronyms that have not been expanded=20 >>>> in their first use. >>>> >>>> 2. I run the idnits tool and found the following nits, please check=20 >>>> and fix. >>>> (See RFCs 3967 and 4897 for information about using normative=20 >>>> references >>>> to lower-maturity documents in RFCs) >>>> >>>> -- Looks like a reference, but probably isn't: 'RFC2119' on line=20 >>>> 121 >>>> >>>> -- Looks like a reference, but probably isn't: 'RFC4379' on line=20 >>>> 258 >>>> >>>> =3D=3D Unused Reference: '1' is defined on line 284, but no explicit=20 >>>> reference >>>> was found in the text >>>> >>>> =3D=3D Unused Reference: '2' is defined on line 287, but no explicit=20 >>>> reference >>>> was found in the text >>>> >>>> =3D=3D Unused Reference: '3' is defined on line 291, but no explicit=20 >>>> reference >>>> was found in the text >>>> >>>> 3. Section 3.2, >>>> 3.1 first para first sentence >>>> s/shall/SHALL >>>> 3.2 last para, the last second sentence s/must/MUST >>>> >>>> 4. The draft quotes the MS-PW and bidirectional co-routed LSP=20 >>>> concept, it's better to add related references to this document. >>>> >>>> >>>> Best regards, >>>> Mach >>>> >>>> >>> >> >> _______________________________________________ >> mpls mailing list >> mpls@ietf.org >> https://www.ietf.org/mailman/listinfo/mpls >> > --=20 Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Thu Jul 31 07:54:02 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7F1101B2921; Thu, 31 Jul 2014 07:53:39 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id vaEI6Jp8DCJM; Thu, 31 Jul 2014 07:53:35 -0700 (PDT) Received: from alln-iport-5.cisco.com (alln-iport-5.cisco.com [173.37.142.92]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 441751B291D; Thu, 31 Jul 2014 07:53:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=13983; q=dns/txt; s=iport; t=1406818409; x=1408028009; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=sXo8HjfFVl3V7ys088WawA3tfb33YdFM3gQsvAl2NxU=; b=fmJ4XrjPKPWK1CCVZ4FBLD+/vnRji9rcD9z0drvQvrOpeSkS5OvoS+2l yJNO1btlx6Nch0p7KB3sRjudH6OH2zJ5X3Y1fHpxy/8nmLMfUqxu1cUao wZzJc3l/t1mM76fpSAn/hGkY56xOUD879o6kUdzBRgiNBAvBvd6r5CDdL 0=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AisFAEJX2lOtJA2E/2dsb2JhbABZgw5SVwTKfyMKh0sBgQYWd4QDAQEBAQMBAQE3LQQDCwwCAgIBCBEEAQEBChQJBxsMCxQJCAIEAQ0FCIg6DbwGEwQEiXuEaxACAR4xBwaDKYEbBbA3g0lsAYECBzs X-IronPort-AV: E=Sophos;i="5.01,772,1400025600"; d="scan'208";a="65499024" Received: from alln-core-10.cisco.com ([173.36.13.132]) by alln-iport-5.cisco.com with ESMTP; 31 Jul 2014 14:53:28 +0000 Received: from xhc-aln-x09.cisco.com (xhc-aln-x09.cisco.com [173.36.12.83]) by alln-core-10.cisco.com (8.14.5/8.14.5) with ESMTP id s6VErRva010227 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Thu, 31 Jul 2014 14:53:27 GMT Received: from xmb-rcd-x13.cisco.com ([169.254.3.17]) by xhc-aln-x09.cisco.com ([173.36.12.83]) with mapi id 14.03.0123.003; Thu, 31 Jul 2014 09:53:27 -0500 From: "Siva Sivabalan (msiva)" To: Loa Andersson , "Nobo Akiya (nobo)" , "Alexander Vainshtein" Thread-Topic: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt Thread-Index: AQHPrMlVmEpmxDEqmEysff6oRA2Y4Ju6j2gAgAACiwCAAAQ+gP//rZ/Q Date: Thu, 31 Jul 2014 14:53:26 +0000 Message-ID: References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> <53DA3194.4040306@pi.nu> <7adbcb851e224adbbd93416e5932b618@AM3PR03MB612.eurprd03.prod.outlook.com> <53DA52D0.8030206@pi.nu> <53DA565F.3030906@pi.nu> In-Reply-To: <53DA565F.3030906@pi.nu> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [161.44.212.152] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/gu6ttl3ethOLddpJ6bl2SJ6AZ6o Cc: "rtg-dir@ietf.org" , "rtg-ads@tools.ietf.org" , "Sami Boutros \(sboutros\)" , "draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org" , "mpls@ietf.org" Subject: Re: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 14:53:39 -0000 Hi Loa, (chiming in as a co-author) Please could you do the needful to allocate the code-point. Thanks Himanshu and Nobo for initiating this discussion. Regards, Siva -----Original Message----- From: Loa Andersson [mailto:loa@pi.nu]=20 Sent: Thursday, July 31, 2014 10:45 AM To: Nobo Akiya (nobo); Alexander Vainshtein Cc: rtg-dir@ietf.org; mpls@ietf.org; Sami Boutros (sboutros); rtg-ads@tools= .ietf.org; draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org Subject: Re: [mpls] [RTG-DIR] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-t= lv-07.txt Nobo, dam it - you are not an author of this document, so you can't request the e= arly allocation. If you think we should do it, tell one of the authors to s= end me a mail. /Loa On 2014-07-31 16:29, Loa Andersson wrote: > Nobo, > > If that is what you want, I can initiate the procedure to allocate=20 > that code point. > > /Loa > > On 2014-07-31 16:20, Nobo Akiya (nobo) wrote: >> Hi Sasha, >> >> I wish that was the case :) >> >> https://www.iana.org/assignments/mpls-lsp-ping-parameters/mpls-lsp-pi >> ng-parameters.xhtml#tlvs >> >> >> 32768-49161 >> Standards Action >> This range is for optional TLVs that can be silently dropped if not=20 >> recognized. >> >> Thanks, >> Nobo >> >>> -----Original Message----- >>> From: Alexander Vainshtein [mailto:Alexander.Vainshtein@ecitele.com] >>> Sent: Thursday, July 31, 2014 10:11 AM >>> To: Nobo Akiya (nobo) >>> Cc: rtg-dir@ietf.org; >>> draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; rtg-=20 >>> ads@tools.ietf.org; mpls@ietf.org; Loa Andersson; Shah, Himanshu;=20 >>> Sami Boutros (sboutros); Mach Chen >>> Subject: RE: [mpls] [RTG-DIR] RtgDir review: >>> draft-ietf-mpls-lsp-ping-ttl-tlv- >>> 07.txt >>> >>> Nobo, and all, >>> 0x8001 =3D 32769 falls in the "Unassigned" range of TLVs for LSP Ping. >>> I think >>> that it has been considered as safe enough to use by the implementers. >>> Somehow the relevant IANA registry does not provide any values for=20 >>> experimental use. >>> >>> My 2c, >>> Sasha >>> Email: Alexander.Vainshtein@ecitele.com >>> Mobile: 054-9266302 >>> >>>> -----Original Message----- >>>> From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Nobo Akiya >>>> (nobo) >>>> Sent: Thursday, July 31, 2014 4:16 PM >>>> To: Loa Andersson; Shah, Himanshu; Sami Boutros (sboutros); Mach=20 >>>> Chen >>>> Cc: rtg-dir@ietf.org; >>>> draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; rtg-=20 >>>> ads@tools.ietf.org; mpls@ietf.org >>>> Subject: Re: [mpls] [RTG-DIR] RtgDir review: >>>> draft-ietf-mpls-lsp-ping-ttl-tlv- 07.txt >>>> >>>> Hi Loa, Authors, >>>> >>>> The code base which I'm familiar with already have shipped=20 >>>> implementation of the TTL TLV, and it appears that the Type=3D0x8001=20 >>>> is >>> being used. >>>> >>>> I do not have the knowledge of why this value was used in this=20 >>>> implementation without doing early IANA allocation for the TTL TLV=20 >>>> code point. >>>> >>>> If usage of Type=3D0x8001 as the TTL TLV does not conflict with any=20 >>>> other implementations out there, is it possible to ask IANA to=20 >>>> assign this value >>>> (0x8001) when the document progresses? >>>> >>>> My apologies for causing extra burden on the authors, the Shepherd=20 >>>> and the ADs. >>>> >>>> But I truly hope that this request can be accommodated. >>>> >>>> Thanks! >>>> >>>> -Nobo >>>> >>>>> -----Original Message----- >>>>> From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Loa=20 >>>>> Andersson >>>>> Sent: Thursday, July 31, 2014 8:08 AM >>>>> To: Shah, Himanshu; Sami Boutros (sboutros); Mach Chen >>>>> Cc: rtg-dir@ietf.org; >>>>> draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; >>>>> mpls@ietf.org; rtg-ads@tools.ietf.org >>>>> Subject: Re: [mpls] [RTG-DIR] RtgDir review: >>>>> draft-ietf-mpls-lsp-ping-ttl-tlv- 07.txt >>>>> >>>>> Himanshu, >>>>> >>>>> A request for early allocation need to come from the authors, to=20 >>>>> wg-chairs and ADs. >>>>> >>>>> The draft is through IETF Last call and has been updated, given=20 >>>>> that ADrian is comfortable it will be on the IESG agenda shortly. >>>>> >>>>> IANA has reviewed it and are OK. >>>>> >>>>> Normally I would not ask for early allocation this late in the=20 >>>>> process. >>>>> >>>>> /Loa >>>>> >>>>> On 2014-07-31 01:15, Shah, Himanshu wrote: >>>>>> This draft fills a major shortcoming of the VCCV ping over MS-PW >>>>> (especially if reply mode is in-band). >>>>>> I am not sure why this draft is stuck (i.e. taking too long to go=20 >>>>>> through). >>>>>> >>>>>> Is there a provisional IANA assignment for the TTL TLV type value? >>>>>> >>>>>> Thanks, >>>>>> himanshu >>>>>> >>>>>> -----Original Message----- >>>>>> From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Sami=20 >>>>>> Boutros >>>>>> (sboutros) >>>>>> Sent: Wednesday, July 30, 2014 3:44 PM >>>>>> To: Mach Chen >>>>>> Cc: rtg-dir@ietf.org; mpls@ietf.org;=20 >>>>>> draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org; >>>>>> rtg-ads@tools.ietf.org >>>>>> Subject: Re: [mpls] RtgDir review: >>>>>> draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt >>>>>> >>>>>> Resending.. >>>>>> >>>>>> On May 15, 2014, at 9:20 PM, Sami Boutros (sboutros) wrote: >>>>>> >>>>>>>> >>>>>>>> Minor Issues: >>>>>>>> >>>>>>>> 1. Since the TTL TLV is defined for both MS-PW and=20 >>>>>>>> bidirectional co-routed LSP, it should be better to explicitly=20 >>>>>>>> state this in the abstract >>>>> section. >>>>>>>> >>>>>>> >>>>>>> Sami: Sure will do. >>>>>>> >>>>>>>> 2. "LSP-Ping echo request", "LSP-Ping request", "MPLS echo=20 >>>>>>>> request", "echo request" and "request" are interchangeably used=20 >>>>>>>> in the draft, it's better to unify the usage of it to "MPLS=20 >>>>>>>> echo request" (to align with the usage in RFC4379). For "echo=20 >>>>>>>> reply", "bidirectional co-routed LSP", they have the similar issue= . >>>>>>>> >>>>>>> >>>>>>> Sami: Ok, will fix that. >>>>>>> >>>>>>>> 3.Section 3.1 >>>>>>>> >>>>>>>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- >>>> + >>>>>>>> | Value | Reserved | >>>>>>>> Flags | >>>>>>>> >>>>>>>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >>>>>>>> >>>>>>>> For the TTL TLV, the value filed should include the "value",=20 >>>>>>>> "Reserved" and "Flags", so it's better to change the "Value" >>>>>>>> field to "TTL" field hence to reduce the confusion. >>>>>>>> >>>>>>> >>>>>>> Sami: Sure. >>>>>>> >>>>>>>> 4. Section 3.2 >>>>>>>> "This TLV shall be included in the echo request by the=20 >>>>>>>> originator of request. The use of this TLV is optional. If a=20 >>>>>>>> receiver does not understand the TTL TLV, it will simply ignore=20 >>>>>>>> the TLV (Type value of TLV is assumed to be in the range of=20 >>>>>>>> optional TLV's which SHOULD be ignored if an implementation=20 >>>>>>>> does not support or >>>> understand them). >>>>>>>> In the absence of TTL TLV or if TTL TLV is ignored by a=20 >>>>>>>> receiver, the determination of the TTL value used in the MPLS=20 >>>>>>>> label on the echo reply is beyond the scope of this document." >>>>>>>> >>>>>>>> What's your mean of "beyond the scope of this document" here?=20 >>>>>>>> Is it to apply the procedures defined in RFC4379 or just let it=20 >>>>>>>> to the implementation?I guess you assume to apply the=20 >>>>>>>> definition in RFC4379, >>>>>>> >>>>>>> Sami: It is out of scope of this document, but for sure=20 >>>>>>> procedure in 4379 >>>>> apply. >>>>>>>> if >>>>>>> >>>>>>>> so, the TTL of the MPLS label will be more probably set to 255,=20 >>>>>>>> means the echo reply will be sent to the ingress of the MS-PW=20 >>>>>>>> or LSP. I am not sure whether this is the right procedure, it=20 >>>>>>>> seems a security issue. IMHO, it does not make any sense to=20 >>>>>>>> expect the receiver to send echo reply in this situation, and=20 >>>>>>>> even sent, the initiator will not receive the reply. The safer=20 >>>>>>>> way is to drop the whole >>>>> echo request and record an error log. >>>>>>> >>>>>>> >>>>>>> Sami: >>>>>>> >>>>>>> We are not saying the receiver must send a reply, however if he=20 >>>>>>> does the reply may be received by the ingress node which might=20 >>>>>>> be the wrong node, since the receiver may not set the TTL=20 >>>>>>> properly on the reply, keep in mind that this is a receiver with=20 >>>>>>> an old implementation and >>>>> the TLV is optional. >>>>>>> >>>>>>> Please refer to the security section for your security concern. >>>>>>> >>>>>>> Sami: >>>>>>> >>>>>>> >>>>>>>> >>>>>>>> 5. Section 3.2 >>>>>>>> >>>>>>>> "In other words, if the value of the TTL provided by this TLV=20 >>>>>>>> does not match the TTL determined by other means, such as=20 >>>>>>>> Switching Point TLV in MS-PW, then TTL TLV must be used." >>>>>>>> Here, it implies that the receiver has to perform TTL matching=20 >>>>>>>> process, since how to set the TTL is independent of such=20 >>>>>>>> matching, seems this sentence is redundant and confusion. >>>>>>>> >>>>>>> >>>>>>> Sami: Are you familiar with the switching point TLV? and what it >>>>> includes? >>>>>>> >>>>>>>> 6. Section 4. >>>>>>>> >>>>>>>> "...The value field of the TTL TLV and the TTL field of the=20 >>>>>>>> MPLS label are set to 2," >>>>>>>> >>>>>>>> I guess that the MPLS Label is the PW label, right? It's better=20 >>>>>>>> to add more text to make this more explicit. In addition, how=20 >>>>>>>> to set the TTL value of the tunnel Label? 255 or any other value? >>>>>>>> >>>>>>> >>>>>>> Sami: The tunnel label TTL is irrelevant here, however we will=20 >>>>>>> make it >>>>> explicit that this is a PW label. >>>>>>> >>>>>>>> 5. Section 4.1. Traceroute mode >>>>>>>> "In the traceroute mode TTL value in the TLV is successively=20 >>>>>>>> set to 1, 2, and so on. This is similar to the TTL values used=20 >>>>>>>> for the label set on the packet." >>>>>>>> IMHO, some text may be needed to clarify which "FEC" should be=20 >>>>>>>> carried, especially for MS-PW trace. Since in Section 4.0, the=20 >>>>>>>> example says the FEC of segment C-D should be carried, does it=20 >>>>>>>> mean the FEC of last PW Segment of the segment under test=20 >>>>>>>> should be carried or the FEC will vary when TTL changed. For=20 >>>>>>>> example, when perform segment trace (e.g., to trace B-D=20 >>>>>>>> segment), when TTL is 1, which >>>>> FEC should be carried? >>>>>>> >>>>>>> Sami: >>>>>>> We are not here redefining a trace route for a MS-PW, we are=20 >>>>>>> describing >>>>> how our extensions will apply. >>>>>>> Sami: >>>>>>> >>>>>>>> >>>>>>>> 6. Section 4.2. Error scenario >>>>>>>> For this scenario, do you need to define some error codes here? >>>>>>> >>>>>>> Sami: >>>>>>> The section describe how to handle the error scenario, there is=20 >>>>>>> no need >>>>> for an error code. >>>>>>> Sami: >>>>>>> >>>>>>>> >>>>>>>> 7. For MS-PW trace, seems that you assume the tunnel is pipe=20 >>>>>>>> mode, if so, it should be explicitly stated. If not, you should=20 >>>>>>>> define how the MS-PW trace works (given that the tunnels in=20 >>>>>>>> both directions may span different hops). >>>>>>> >>>>>>> Sami: >>>>>>> Not sure I get the concern? Again we are not re-defining how=20 >>>>>>> MS-PW >>>>> trace work. >>>>>>> >>>>>>> Thanks, >>>>>>> >>>>>>> Sami >>>>>>>> >>>>>>>> Nits: >>>>>>>> >>>>>>>> 1. Please check the text for acronyms that have not been=20 >>>>>>>> expanded in their first use. >>>>>>>> >>>>>>>> 2. I run the idnits tool and found the following nits, please=20 >>>>>>>> check and fix. >>>>>>>> (See RFCs 3967 and 4897 for information about using=20 >>>>>>>> normative references >>>>>>>> to lower-maturity documents in RFCs) >>>>>>>> >>>>>>>> -- Looks like a reference, but probably isn't: 'RFC2119' on=20 >>>>>>>> line >>>>>>>> 121 >>>>>>>> >>>>>>>> -- Looks like a reference, but probably isn't: 'RFC4379' on=20 >>>>>>>> line >>>>>>>> 258 >>>>>>>> >>>>>>>> =3D=3D Unused Reference: '1' is defined on line 284, but no=20 >>>>>>>> explicit reference >>>>>>>> was found in the text >>>>>>>> >>>>>>>> =3D=3D Unused Reference: '2' is defined on line 287, but no=20 >>>>>>>> explicit reference >>>>>>>> was found in the text >>>>>>>> >>>>>>>> =3D=3D Unused Reference: '3' is defined on line 291, but no=20 >>>>>>>> explicit reference >>>>>>>> was found in the text >>>>>>>> >>>>>>>> 3. Section 3.2, >>>>>>>> 3.1 first para first sentence >>>>>>>> s/shall/SHALL >>>>>>>> 3.2 last para, the last second sentence s/must/MUST >>>>>>>> >>>>>>>> 4. The draft quotes the MS-PW and bidirectional co-routed LSP=20 >>>>>>>> concept, it's better to add related references to this document. >>>>>>>> >>>>>>>> >>>>>>>> Best regards, >>>>>>>> Mach >>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> mpls mailing list >>>>>> mpls@ietf.org >>>>>> https://www.ietf.org/mailman/listinfo/mpls >>>>>> >>>>> >>>>> -- >>>>> >>>>> >>>>> Loa Andersson email: loa@mail01.huawei.com >>>>> Senior MPLS Expert loa@pi.nu >>>>> Huawei Technologies (consultant) phone: +46 739 81 21 64 >>>>> >>>>> _______________________________________________ >>>>> mpls mailing list >>>>> mpls@ietf.org >>>>> https://www.ietf.org/mailman/listinfo/mpls >>>> >>>> _______________________________________________ >>>> mpls mailing list >>>> mpls@ietf.org >>>> https://www.ietf.org/mailman/listinfo/mpls > --=20 Loa Andersson email: loa@mail01.huawei.com Senior MPLS Expert loa@pi.nu Huawei Technologies (consultant) phone: +46 739 81 21 64 From nobody Thu Jul 31 10:24:16 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 073481B295D; Thu, 31 Jul 2014 10:24:13 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -101.9 X-Spam-Level: X-Spam-Status: No, score=-101.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id RJRaMOUIIkID; Thu, 31 Jul 2014 10:24:09 -0700 (PDT) Received: from asmtp5.iomartmail.com (asmtp5.iomartmail.com [62.128.201.176]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B1A251A0310; Thu, 31 Jul 2014 10:24:03 -0700 (PDT) Received: from asmtp5.iomartmail.com (localhost.localdomain [127.0.0.1]) by asmtp5.iomartmail.com (8.13.8/8.13.8) with ESMTP id s6VHNpdE005119; Thu, 31 Jul 2014 18:23:51 +0100 Received: from 950129200 (b18ef902.virtua.com.br [177.142.249.2] (may be forged)) (authenticated bits=0) by asmtp5.iomartmail.com (8.13.8/8.13.8) with ESMTP id s6VHNN6j004799 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO); Thu, 31 Jul 2014 18:23:43 +0100 From: "Adrian Farrel" To: "'Shah, Himanshu'" , "'Sami Boutros \(sboutros\)'" , "'Mach Chen'" References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> In-Reply-To: <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> Date: Thu, 31 Jul 2014 18:23:27 +0100 Message-ID: <001201cface4$33eaf1b0$9bc0d510$@olddog.co.uk> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 14.0 Thread-Index: AQHr8B29JN6lHzMtl3Z16fKN/FuooQKiAWJDAb034jICW3sei5tLyQkg Content-Language: en-gb X-TM-AS-MML: disable X-TM-AS-Product-Ver: IMSS-7.1.0.1576-7.5.0.1018-20852.001 X-TM-AS-Result: No--33.666-10.0-31-10 X-imss-scan-details: No--33.666-10.0-31-10 X-TMASE-MatchedRID: 8HTFlOrbAtEwJ6xbTjBa5o1nuRzhSr7jwx0jRRxcQfMn+p552csI1R9I nwZVKlPIRIpasgDKarJNrgJ/QPoCneG5o3Ih4/5zVo6mn+xXmdWe8Eev9oWcztm9lptMNsMLklw j+zYtbPWKhXV7aRCSUgQ/URiXaEPlJnLCYm9iI2nhuXUWQoMQt7d2noO4P7rALraGNlLRahit/2 uGCywATsAfb65gvbMMONMIq6tJjPVmHCESzdHlJe7KTDtx8CggfkuZtv/FS5owyfWtyopBqDC0p JIQUiJOo7QSSB5Xe13AgeaK+M0v4h0QUKM89Lf/mlaAItiONP0UkWvaqUqLH5p5yGjWmTixV96Q sW8/xRVQgRhQ8LfXjLTeYox5gQ2wwuTfHDVJ/14SuhBXNJb1dLRfRjDbtW6i+Cckfm+bb6APnFh 6w8GlzLy6ePjAiEEvbktwtgMv6fX0DbEEQawseJmug812qIbzUb94TvZPQ0Lqi5hQjKcH1JivGt cLct3u1di5kB0M8FZjEoGkSWwOcbyTOSF4+k+YUIhTTahb7dWimsR6hkcJAjdnd59Af7CPmYipE y3261sqHM6hQwNnrNu7Y1z8Bd7mULNUje/+PyCeEco05hssvsPfVjo91KYI0mAM2eipqlrRIkCL Rkbt6qYuny6fS1JXJsAUhrRx+DUTSpw9+3gvPw6uUGRBr2oW16H/l0XwR9vJYIv7y0tu9lmkhn7 TN/aLarOX7+hRHjc+ZLNSw8H/z3rSP9RtGZYoU+OjsPhIWDgfOdo4H355iAUwUtcn3I+UsL+3Kv +qd5QdzlFITageAKtDr6Utp+bsYWo9dIuk10CeAiCmPx4NwLTrdaH1ZWqCpvI8UZOf47jUZxEAl FPo846HM5rqDwqtlExlQIQeRG0= Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/FFeQjztF3MNs0AKEiyPATIuJkZI Cc: rtg-dir@ietf.org, draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org, rtg-ads@tools.ietf.org, mpls@ietf.org Subject: Re: [mpls] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: adrian@olddog.co.uk List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 17:24:13 -0000 OK, I'm moving this forward now that we have a new revision (posted yesterday, and a response from Mach today), Please note that none of this is magic! To advance a document that is in review you have to complete the discussion of review comments and post a revision. The authors and shepherd are responsible for chasing down those comments: you can come to the AD to handle issues of silence, but the AD cannot micro-manage all of the documents and it doesn't help to ask why this has taken so long when no update was posted. Adrian > -----Original Message----- > From: Shah, Himanshu [mailto:hshah@ciena.com] > Sent: 31 July 2014 00:15 > To: Sami Boutros (sboutros); Mach Chen > Cc: rtg-dir@ietf.org; mpls@ietf.org; draft-ietf-mpls-lsp-ping-ttl- > tlv.all@tools.ietf.org; rtg-ads@tools.ietf.org > Subject: RE: RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt > > This draft fills a major shortcoming of the VCCV ping over MS-PW (especially if > reply mode is in-band). > I am not sure why this draft is stuck (i.e. taking too long to go through). > > Is there a provisional IANA assignment for the TTL TLV type value? > > Thanks, > himanshu > > -----Original Message----- > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Sami Boutros > (sboutros) > Sent: Wednesday, July 30, 2014 3:44 PM > To: Mach Chen > Cc: rtg-dir@ietf.org; mpls@ietf.org; draft-ietf-mpls-lsp-ping-ttl- > tlv.all@tools.ietf.org; rtg-ads@tools.ietf.org > Subject: Re: [mpls] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt > > Resending.. > > On May 15, 2014, at 9:20 PM, Sami Boutros (sboutros) wrote: > > >> > >> Minor Issues: > >> > >> 1. Since the TTL TLV is defined for both MS-PW and bidirectional > >> co-routed LSP, it should be better to explicitly state this in the abstract section. > >> > > > > Sami: Sure will do. > > > >> 2. "LSP-Ping echo request", "LSP-Ping request", "MPLS echo request", > >> "echo request" and "request" are interchangeably used in the draft, > >> it's better to unify the usage of it to "MPLS echo request" (to align > >> with the usage in RFC4379). For "echo reply", "bidirectional > >> co-routed LSP", they have the similar issue. > >> > > > > Sami: Ok, will fix that. > > > >> 3.Section 3.1 > >> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > >> | Value | Reserved | Flags | > >> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > >> > >> For the TTL TLV, the value filed should include the "value", > >> "Reserved" and "Flags", so it's better to change the "Value" field to > >> "TTL" field hence to reduce the confusion. > >> > > > > Sami: Sure. > > > >> 4. Section 3.2 > >> "This TLV shall be included in the echo request by the originator of > >> request. The use of this TLV is optional. If a receiver does not > >> understand the TTL TLV, it will simply ignore the TLV (Type value of > >> TLV is assumed to be in the range of optional TLV's which SHOULD be > >> ignored if an implementation does not support or understand them). In > >> the absence of TTL TLV or if TTL TLV is ignored by a receiver, the > >> determination of the TTL value used in the MPLS label on the echo > >> reply is beyond the scope of this document." > >> > >> What's your mean of "beyond the scope of this document" here? Is it > >> to apply the procedures defined in RFC4379 or just let it to the > >> implementation?I guess you assume to apply the definition in RFC4379, > > > > Sami: It is out of scope of this document, but for sure procedure in 4379 apply. > >> if > > > >> so, the TTL of the MPLS label will be more probably set to 255, means > >> the echo reply will be sent to the ingress of the MS-PW or LSP. I am > >> not sure whether this is the right procedure, it seems a security > >> issue. IMHO, it does not make any sense to expect the receiver to > >> send echo reply in this situation, and even sent, the initiator will > >> not receive the reply. The safer way is to drop the whole echo request and > record an error log. > > > > > > Sami: > > > > We are not saying the receiver must send a reply, however if he does > > the reply may be received by the ingress node which might be the wrong > > node, since the receiver may not set the TTL properly on the reply, > > keep in mind that this is a receiver with an old implementation and the TLV is > optional. > > > > Please refer to the security section for your security concern. > > > > Sami: > > > > > >> > >> 5. Section 3.2 > >> > >> "In other words, if the value of the TTL provided by this TLV does > >> not match the TTL determined by other means, such as Switching Point > >> TLV in MS-PW, then TTL TLV must be used." > >> Here, it implies that the receiver has to perform TTL matching > >> process, since how to set the TTL is independent of such matching, > >> seems this sentence is redundant and confusion. > >> > > > > Sami: Are you familiar with the switching point TLV? and what it includes? > > > >> 6. Section 4. > >> > >> "...The value field of the TTL TLV and the TTL field of the MPLS > >> label are set to 2," > >> > >> I guess that the MPLS Label is the PW label, right? It's better to > >> add more text to make this more explicit. In addition, how to set the > >> TTL value of the tunnel Label? 255 or any other value? > >> > > > > Sami: The tunnel label TTL is irrelevant here, however we will make it explicit > that this is a PW label. > > > >> 5. Section 4.1. Traceroute mode > >> "In the traceroute mode TTL value in the TLV is successively set to > >> 1, 2, and so on. This is similar to the TTL values used for the > >> label set on the packet." > >> IMHO, some text may be needed to clarify which "FEC" should be > >> carried, especially for MS-PW trace. Since in Section 4.0, the > >> example says the FEC of segment C-D should be carried, does it mean > >> the FEC of last PW Segment of the segment under test should be > >> carried or the FEC will vary when TTL changed. For example, when > >> perform segment trace (e.g., to trace B-D segment), when TTL is 1, which FEC > should be carried? > > > > Sami: > > We are not here redefining a trace route for a MS-PW, we are describing how > our extensions will apply. > > Sami: > > > >> > >> 6. Section 4.2. Error scenario > >> For this scenario, do you need to define some error codes here? > > > > Sami: > > The section describe how to handle the error scenario, there is no need for an > error code. > > Sami: > > > >> > >> 7. For MS-PW trace, seems that you assume the tunnel is pipe mode, if > >> so, it should be explicitly stated. If not, you should define how the > >> MS-PW trace works (given that the tunnels in both directions may span > >> different hops). > > > > Sami: > > Not sure I get the concern? Again we are not re-defining how MS-PW trace > work. > > > > Thanks, > > > > Sami > >> > >> Nits: > >> > >> 1. Please check the text for acronyms that have not been expanded in > >> their first use. > >> > >> 2. I run the idnits tool and found the following nits, please check > >> and fix. > >> (See RFCs 3967 and 4897 for information about using normative > >> references > >> to lower-maturity documents in RFCs) > >> > >> -- Looks like a reference, but probably isn't: 'RFC2119' on line 121 > >> > >> -- Looks like a reference, but probably isn't: 'RFC4379' on line 258 > >> > >> == Unused Reference: '1' is defined on line 284, but no explicit > >> reference > >> was found in the text > >> > >> == Unused Reference: '2' is defined on line 287, but no explicit > >> reference > >> was found in the text > >> > >> == Unused Reference: '3' is defined on line 291, but no explicit > >> reference > >> was found in the text > >> > >> 3. Section 3.2, > >> 3.1 first para first sentence > >> s/shall/SHALL > >> 3.2 last para, the last second sentence s/must/MUST > >> > >> 4. The draft quotes the MS-PW and bidirectional co-routed LSP > >> concept, it's better to add related references to this document. > >> > >> > >> Best regards, > >> Mach > >> > >> > > > > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls From nobody Thu Jul 31 10:41:59 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id BAC051B2948; Thu, 31 Jul 2014 10:41:57 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.267 X-Spam-Level: X-Spam-Status: No, score=-2.267 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, IP_NOT_FRIENDLY=0.334, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 1MeumA0mscfn; Thu, 31 Jul 2014 10:41:54 -0700 (PDT) Received: from mx0a-00103a01.pphosted.com (mx0a-00103a01.pphosted.com [67.231.144.234]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 67C9F1A0114; Thu, 31 Jul 2014 10:41:50 -0700 (PDT) Received: from pps.filterd (m0000419.ppops.net [127.0.0.1]) by mx0a-00103a01.pphosted.com (8.14.5/8.14.5) with SMTP id s6VHeuHV016097; Thu, 31 Jul 2014 13:41:41 -0400 Received: from mdwvexchht01.ciena.com (LIN1-118-36-28.ciena.com [63.118.36.28]) by mx0a-00103a01.pphosted.com with ESMTP id 1nfnvjhd6t-1 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NOT); Thu, 31 Jul 2014 13:41:40 -0400 Received: from VAWVE2K13MBX01.ciena.com (10.4.156.87) by MDWVEXCHHT01.ciena.com (10.4.156.175) with Microsoft SMTP Server (TLS) id 8.3.298.1; Thu, 31 Jul 2014 13:41:39 -0400 Received: from ONWVEXCHHT03.ciena.com (10.128.6.43) by VAWVE2K13MBX01.ciena.com (10.4.156.87) with Microsoft SMTP Server (TLS) id 15.0.847.32; Thu, 31 Jul 2014 13:41:39 -0400 Received: from ONWVEXCHMB04.ciena.com ([::1]) by ONWVEXCHHT03.ciena.com ([::1]) with mapi; Thu, 31 Jul 2014 13:41:38 -0400 From: "Shah, Himanshu" To: "adrian@olddog.co.uk" , "'Sami Boutros (sboutros)'" , "'Mach Chen'" Date: Thu, 31 Jul 2014 13:41:37 -0400 Thread-Topic: RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt Thread-Index: AQHr8B29JN6lHzMtl3Z16fKN/FuooQKiAWJDAb034jICW3sei5tLyQkggABM8WA= Message-ID: <40746B2300A8FC4AB04EE722A593182B76F4F63A@ONWVEXCHMB04.ciena.com> References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> <001201cface4$33eaf1b0$9bc0d510$@olddog.co.uk> In-Reply-To: <001201cface4$33eaf1b0$9bc0d510$@olddog.co.uk> Accept-Language: en-US, en-CA Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US, en-CA X-TM-AS-Product-Ver: SMEX-10.0.0.1412-7.000.1014-20852.000 X-TM-AS-Result: No--37.628600-8.000000-31 X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.12.52, 1.0.27, 0.0.0000 definitions=2014-07-31_07:2014-07-31,2014-07-31,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=7.0.1-1402240000 definitions=main-1407310221 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/VTRYpViBLQApRdu_MxS4RMMaalc Cc: "rtg-dir@ietf.org" , "draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org" , "rtg-ads@tools.ietf.org" , "mpls@ietf.org" Subject: Re: [mpls] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 17:41:57 -0000 Hi Adrian - By no means I was wondering about the delay in review process. Sorry if it came off that way. I was surprised about the overall time and the number of revisions that it = went through. /himanshu -----Original Message----- From: Adrian Farrel [mailto:adrian@olddog.co.uk]=20 Sent: Thursday, July 31, 2014 1:23 PM To: Shah, Himanshu; 'Sami Boutros (sboutros)'; 'Mach Chen' Cc: rtg-dir@ietf.org; mpls@ietf.org; draft-ietf-mpls-lsp-ping-ttl-tlv.all@t= ools.ietf.org; rtg-ads@tools.ietf.org Subject: RE: RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt OK, I'm moving this forward now that we have a new revision (posted yesterd= ay, and a response from Mach today), Please note that none of this is magic! To advance a document that is in re= view you have to complete the discussion of review comments and post a revi= sion. The authors and shepherd are responsible for chasing down those comme= nts: you can come to the AD to handle issues of silence, but the AD cannot = micro-manage all of the documents and it doesn't help to ask why this has t= aken so long when no update was posted. Adrian > -----Original Message----- > From: Shah, Himanshu [mailto:hshah@ciena.com] > Sent: 31 July 2014 00:15 > To: Sami Boutros (sboutros); Mach Chen > Cc: rtg-dir@ietf.org; mpls@ietf.org; draft-ietf-mpls-lsp-ping-ttl-=20 > tlv.all@tools.ietf.org; rtg-ads@tools.ietf.org > Subject: RE: RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt >=20 > This draft fills a major shortcoming of the VCCV ping over MS-PW=20 > (especially if > reply mode is in-band). > I am not sure why this draft is stuck (i.e. taking too long to go through= ). >=20 > Is there a provisional IANA assignment for the TTL TLV type value? >=20 > Thanks, > himanshu >=20 > -----Original Message----- > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Sami Boutros > (sboutros) > Sent: Wednesday, July 30, 2014 3:44 PM > To: Mach Chen > Cc: rtg-dir@ietf.org; mpls@ietf.org; draft-ietf-mpls-lsp-ping-ttl-=20 > tlv.all@tools.ietf.org; rtg-ads@tools.ietf.org > Subject: Re: [mpls] RtgDir review:=20 > draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt >=20 > Resending.. >=20 > On May 15, 2014, at 9:20 PM, Sami Boutros (sboutros) wrote: >=20 > >> > >> Minor Issues: > >> > >> 1. Since the TTL TLV is defined for both MS-PW and bidirectional=20 > >> co-routed LSP, it should be better to explicitly state this in the=20 > >> abstract section. > >> > > > > Sami: Sure will do. > > > >> 2. "LSP-Ping echo request", "LSP-Ping request", "MPLS echo=20 > >> request", "echo request" and "request" are interchangeably used in=20 > >> the draft, it's better to unify the usage of it to "MPLS echo=20 > >> request" (to align with the usage in RFC4379). For "echo reply",=20 > >> "bidirectional co-routed LSP", they have the similar issue. > >> > > > > Sami: Ok, will fix that. > > > >> 3.Section 3.1 > >> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > >> | Value | Reserved | Flags | > >> =20 > >> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > >> > >> For the TTL TLV, the value filed should include the "value",=20 > >> "Reserved" and "Flags", so it's better to change the "Value" field=20 > >> to "TTL" field hence to reduce the confusion. > >> > > > > Sami: Sure. > > > >> 4. Section 3.2 > >> "This TLV shall be included in the echo request by the originator=20 > >> of request. The use of this TLV is optional. If a receiver does not=20 > >> understand the TTL TLV, it will simply ignore the TLV (Type value=20 > >> of TLV is assumed to be in the range of optional TLV's which SHOULD=20 > >> be ignored if an implementation does not support or understand=20 > >> them). In the absence of TTL TLV or if TTL TLV is ignored by a=20 > >> receiver, the determination of the TTL value used in the MPLS label=20 > >> on the echo reply is beyond the scope of this document." > >> > >> What's your mean of "beyond the scope of this document" here? Is it=20 > >> to apply the procedures defined in RFC4379 or just let it to the=20 > >> implementation?I guess you assume to apply the definition in=20 > >> RFC4379, > > > > Sami: It is out of scope of this document, but for sure procedure in=20 > > 4379 apply. > >> if > > > >> so, the TTL of the MPLS label will be more probably set to 255,=20 > >> means the echo reply will be sent to the ingress of the MS-PW or=20 > >> LSP. I am not sure whether this is the right procedure, it seems a=20 > >> security issue. IMHO, it does not make any sense to expect the=20 > >> receiver to send echo reply in this situation, and even sent, the=20 > >> initiator will not receive the reply. The safer way is to drop the=20 > >> whole echo request and > record an error log. > > > > > > Sami: > > > > We are not saying the receiver must send a reply, however if he does=20 > > the reply may be received by the ingress node which might be the=20 > > wrong node, since the receiver may not set the TTL properly on the=20 > > reply, keep in mind that this is a receiver with an old=20 > > implementation and the TLV is > optional. > > > > Please refer to the security section for your security concern. > > > > Sami: > > > > > >> > >> 5. Section 3.2 > >> > >> "In other words, if the value of the TTL provided by this TLV does=20 > >> not match the TTL determined by other means, such as Switching=20 > >> Point TLV in MS-PW, then TTL TLV must be used." > >> Here, it implies that the receiver has to perform TTL matching=20 > >> process, since how to set the TTL is independent of such matching,=20 > >> seems this sentence is redundant and confusion. > >> > > > > Sami: Are you familiar with the switching point TLV? and what it includ= es? > > > >> 6. Section 4. > >> > >> "...The value field of the TTL TLV and the TTL field of the MPLS=20 > >> label are set to 2," > >> > >> I guess that the MPLS Label is the PW label, right? It's better to=20 > >> add more text to make this more explicit. In addition, how to set=20 > >> the TTL value of the tunnel Label? 255 or any other value? > >> > > > > Sami: The tunnel label TTL is irrelevant here, however we will make=20 > > it explicit > that this is a PW label. > > > >> 5. Section 4.1. Traceroute mode > >> "In the traceroute mode TTL value in the TLV is successively set=20 > >> to 1, 2, and so on. This is similar to the TTL values used for the=20 > >> label set on the packet." > >> IMHO, some text may be needed to clarify which "FEC" should be=20 > >> carried, especially for MS-PW trace. Since in Section 4.0, the=20 > >> example says the FEC of segment C-D should be carried, does it mean=20 > >> the FEC of last PW Segment of the segment under test should be=20 > >> carried or the FEC will vary when TTL changed. For example, when=20 > >> perform segment trace (e.g., to trace B-D segment), when TTL is 1,=20 > >> which FEC > should be carried? > > > > Sami: > > We are not here redefining a trace route for a MS-PW, we are=20 > > describing how > our extensions will apply. > > Sami: > > > >> > >> 6. Section 4.2. Error scenario > >> For this scenario, do you need to define some error codes here? > > > > Sami: > > The section describe how to handle the error scenario, there is no=20 > > need for an > error code. > > Sami: > > > >> > >> 7. For MS-PW trace, seems that you assume the tunnel is pipe mode,=20 > >> if so, it should be explicitly stated. If not, you should define=20 > >> how the MS-PW trace works (given that the tunnels in both=20 > >> directions may span different hops). > > > > Sami: > > Not sure I get the concern? Again we are not re-defining how MS-PW=20 > > trace > work. > > > > Thanks, > > > > Sami > >> > >> Nits: > >> > >> 1. Please check the text for acronyms that have not been expanded=20 > >> in their first use. > >> > >> 2. I run the idnits tool and found the following nits, please check=20 > >> and fix. > >> (See RFCs 3967 and 4897 for information about using normative=20 > >> references > >> to lower-maturity documents in RFCs) > >> > >> -- Looks like a reference, but probably isn't: 'RFC2119' on line=20 > >> 121 > >> > >> -- Looks like a reference, but probably isn't: 'RFC4379' on line=20 > >> 258 > >> > >> =3D=3D Unused Reference: '1' is defined on line 284, but no explicit=20 > >> reference > >> was found in the text > >> > >> =3D=3D Unused Reference: '2' is defined on line 287, but no explicit=20 > >> reference > >> was found in the text > >> > >> =3D=3D Unused Reference: '3' is defined on line 291, but no explicit=20 > >> reference > >> was found in the text > >> > >> 3. Section 3.2, > >> 3.1 first para first sentence > >> s/shall/SHALL > >> 3.2 last para, the last second sentence s/must/MUST > >> > >> 4. The draft quotes the MS-PW and bidirectional co-routed LSP=20 > >> concept, it's better to add related references to this document. > >> > >> > >> Best regards, > >> Mach > >> > >> > > >=20 > _______________________________________________ > mpls mailing list > mpls@ietf.org > https://www.ietf.org/mailman/listinfo/mpls From nobody Thu Jul 31 11:04:12 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A6D541A0262 for ; Thu, 31 Jul 2014 11:04:10 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -101.9 X-Spam-Level: X-Spam-Status: No, score=-101.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id K412ERl1coAe for ; Thu, 31 Jul 2014 11:04:09 -0700 (PDT) Received: from asmtp1.iomartmail.com (asmtp1.iomartmail.com [62.128.201.248]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C1D2F1A011D for ; Thu, 31 Jul 2014 11:04:08 -0700 (PDT) Received: from asmtp1.iomartmail.com (localhost.localdomain [127.0.0.1]) by asmtp1.iomartmail.com (8.13.8/8.13.8) with ESMTP id s6VI419O024606; Thu, 31 Jul 2014 19:04:01 +0100 Received: from 950129200 (b18ef902.virtua.com.br [177.142.249.2] (may be forged)) (authenticated bits=0) by asmtp1.iomartmail.com (8.13.8/8.13.8) with ESMTP id s6VI3uZ8024580 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO); Thu, 31 Jul 2014 19:03:59 +0100 From: "Adrian Farrel" To: "'Shah, Himanshu'" , "'Sami Boutros \(sboutros\)'" References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> <001201cface4$33eaf1b0$9bc0d510$@olddog.co.uk> <40746B2300A8FC4AB04EE722A593182B76F4F63A@ONWVEXCHMB04.ciena.com> In-Reply-To: <40746B2300A8FC4AB04EE722A593182B76F4F63A@ONWVEXCHMB04.ciena.com> Date: Thu, 31 Jul 2014 19:04:01 +0100 Message-ID: <003e01cface9$d1783ff0$7468bfd0$@olddog.co.uk> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 14.0 Thread-Index: AQHr8B29JN6lHzMtl3Z16fKN/FuooQKiAWJDAb034jICW3seiwI59ChLAmLVcCCbJzU1wA== Content-Language: en-gb X-TM-AS-MML: disable X-TM-AS-Product-Ver: IMSS-7.1.0.1576-7.5.0.1018-20852.001 X-TM-AS-Result: No--13.295-10.0-31-10 X-imss-scan-details: No--13.295-10.0-31-10 X-TMASE-MatchedRID: u7Yf2n7Ca/04HKI/yaqRmzZZAOYupIza2aYdnwn7qHeKiNSoNLyoVBPv Ft2S2IahDFDxUVAaNK9rsa4n6jVE9JHy7oM4lvOnOI8QpSH7EH76mRiZWXNnyxUZTfM00s4+PqX dU88bkZpb4ecXl1DZSB5yt06OaBCkNdPT5TvyIyiM29hkek7Xdzb43Ng2wffVF86h2gVEY6yyZz 4fMPkeaOmWBKsiZNKdvpwwuyVnUKXeb9/FeE1dEumc4/pDEQa2jI6qXkf2FQ2Qp4MBBY/CMcoOc dLe+JrvmoWs5Zxz404fJnC8iH7I95Tp8OWnVRbF/6s2N560b459LQinZ4QefL6qvLNjDYTwfY9h sM0xN70qtq5d3cxkNVrHocWRRdK4Y16Zv1+1dOn3BSTYEHR2o72NgRlvX2jFpkQpBJuTFJs= Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/rUEq9AXoMAGGd6pT80QVb8qHH3c Cc: mpls@ietf.org, draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org Subject: Re: [mpls] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: adrian@olddog.co.uk List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 18:04:11 -0000 > By no means I was wondering about the delay in review process. > Sorry if it came off that way. OK. Sorry if I'm grumpy. Sitting in the departure lounge at Rio airport putting up with stupid people being too loud! Wrt IANA... There is nothing allocated so far from 32768-49161 so IANA (left to their own devices) would allocate 32768 (which I think is 0x8000). Thus, you need to do something if you want 0x8001. As soon as I move this document to early allocation IANA will do a provisional allocation. Thus I will *not* do that until we have resolved this issue or you will get 0x8000 and be unhappy. But early allocation at this point is a waste of effort. Please simply add to the I-D "IANA is requested to allocate the value 32769." Then we can all go ahead quickly and get the right results. Cheers, Adrian PS. On a separate rant! Picking a value at random during implementation and deploying it is crazy behavior likely to get you in a real mess when some other implementer picks the same value for a different feature. We have a registry for a reason. Please don't break the Internet by ignoring the process, but get into the habit of using RFC 7120 for early allocation when appropriate (not after the fact!) From nobody Thu Jul 31 11:25:01 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id BC85A1A011D for ; Thu, 31 Jul 2014 11:24:59 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.267 X-Spam-Level: X-Spam-Status: No, score=-2.267 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, IP_NOT_FRIENDLY=0.334, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id WKqM57BIcyYR for ; Thu, 31 Jul 2014 11:24:57 -0700 (PDT) Received: from mx0b-00103a01.pphosted.com (mx0b-00103a01.pphosted.com [67.231.152.227]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 65C101A0303 for ; Thu, 31 Jul 2014 11:24:55 -0700 (PDT) Received: from pps.filterd (m0002317.ppops.net [127.0.0.1]) by mx0b-00103a01.pphosted.com (8.14.5/8.14.5) with SMTP id s6VIOacK019589; Thu, 31 Jul 2014 14:24:52 -0400 Received: from vawvcgsie2k1302.ciena.com (LIN1-118-36-36.ciena.com [63.118.36.36]) by mx0b-00103a01.pphosted.com with ESMTP id 1nf4xa3ge3-1 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=NOT); Thu, 31 Jul 2014 14:24:52 -0400 Received: from ONWVEXCHHT03.ciena.com (10.128.6.43) by VAWVCGSIE2K1302.ciena.com (10.4.62.16) with Microsoft SMTP Server (TLS) id 15.0.847.32; Thu, 31 Jul 2014 14:24:51 -0400 Received: from ONWVEXCHMB04.ciena.com ([::1]) by ONWVEXCHHT03.ciena.com ([::1]) with mapi; Thu, 31 Jul 2014 14:24:50 -0400 From: "Shah, Himanshu" To: "adrian@olddog.co.uk" , "'Sami Boutros (sboutros)'" Date: Thu, 31 Jul 2014 14:24:49 -0400 Thread-Topic: RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt Thread-Index: AQHr8B29JN6lHzMtl3Z16fKN/FuooQKiAWJDAb034jICW3seiwI59ChLAmLVcCCbJzU1wIAAB08A Message-ID: <40746B2300A8FC4AB04EE722A593182B76F4F68A@ONWVEXCHMB04.ciena.com> References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> <001201cface4$33eaf1b0$9bc0d510$@olddog.co.uk> <40746B2300A8FC4AB04EE722A593182B76F4F63A@ONWVEXCHMB04.ciena.com> <003e01cface9$d1783ff0$7468bfd0$@olddog.co.uk> In-Reply-To: <003e01cface9$d1783ff0$7468bfd0$@olddog.co.uk> Accept-Language: en-US, en-CA Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US, en-CA x-tm-as-product-ver: SMEX-10.0.0.1412-7.000.1014-20852.001 x-tm-as-result: No--38.240800-8.000000-31 x-tm-as-user-approved-sender: No x-tm-as-user-blocked-sender: No Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.12.52, 1.0.27, 0.0.0000 definitions=2014-07-31_07:2014-07-31,2014-07-31,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=7.0.1-1402240000 definitions=main-1407310227 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/Owhbcgx0YEOpkMbJGj2uvLDgZPM Cc: "mpls@ietf.org" , "draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org" Subject: Re: [mpls] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 18:24:59 -0000 Thanks Adrian - Request to Authors (Sami/Siva/others) - Can you please add the suggested text (below) in the draft in order to obta= in the 0x8001 value from the IANA? Thanks, Himanshu -----Original Message----- From: Adrian Farrel [mailto:adrian@olddog.co.uk]=20 Sent: Thursday, July 31, 2014 2:04 PM To: Shah, Himanshu; 'Sami Boutros (sboutros)' Cc: mpls@ietf.org; draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org Subject: RE: RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt > By no means I was wondering about the delay in review process. > Sorry if it came off that way. OK. Sorry if I'm grumpy. Sitting in the departure lounge at Rio airport put= ting up with stupid people being too loud! Wrt IANA... There is nothing allocated so far from 32768-49161 so IANA (left to their o= wn devices) would allocate 32768 (which I think is 0x8000). Thus, you need to do something if you want 0x8001. As soon as I move this document to early allocation IANA will do a provisio= nal allocation. Thus I will *not* do that until we have resolved this issue= or you will get 0x8000 and be unhappy. But early allocation at this point is a waste of effort. Please simply add to the I-D "IANA is requested to allocate the value 32769= ." Then we can all go ahead quickly and get the right results. Cheers, Adrian PS. On a separate rant! Picking a value at random during implementation an= d deploying it is crazy behavior likely to get you in a real mess when some= other implementer picks the same value for a different feature. We have a = registry for a reason. Please don't break the Internet by ignoring the proc= ess, but get into the habit of using RFC 7120 for early allocation when app= ropriate (not after the fact!) From nobody Thu Jul 31 11:41:45 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 0DB461A0329 for ; Thu, 31 Jul 2014 11:41:34 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id chCG3SO09WxN for ; Thu, 31 Jul 2014 11:41:31 -0700 (PDT) Received: from alln-iport-6.cisco.com (alln-iport-6.cisco.com [173.37.142.93]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 9894D1A01FF for ; Thu, 31 Jul 2014 11:41:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2048; q=dns/txt; s=iport; t=1406832091; x=1408041691; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=vORF4VDc0KI/oSMpg1JHY3N4L/J1oGrI1Nd4FDgJwWI=; b=eeWNQ+UL2NeWX8h+NUjtYoj/Z5N4aJoREFRHI1BoBJ4DfaxNtAbcLUVs sScy5Xl3yqMhv6wgo+1UvSYdYOPoMVYWswVNqn4sIH5/ZJqSl9Jq68yVu ohi7SCIbG8rRpXhaoBs9GHOxc3KhGiam9UANjnS0/x0rFScyZp6K2x4Bc 8=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AiYFAFKN2lOtJV2Z/2dsb2JhbABbgw6BKQTSeAGBDBZ3hAMBAQEBAgE6PwUHBAIBCBEEAQEfCQcyFAkIAgQOBYg6CMltF48ZMwcGgymBGwEElz6EJpRTg0lsAYFE X-IronPort-AV: E=Sophos;i="5.01,773,1400025600"; d="scan'208";a="65552650" Received: from rcdn-core-2.cisco.com ([173.37.93.153]) by alln-iport-6.cisco.com with ESMTP; 31 Jul 2014 18:41:31 +0000 Received: from xhc-rcd-x07.cisco.com (xhc-rcd-x07.cisco.com [173.37.183.81]) by rcdn-core-2.cisco.com (8.14.5/8.14.5) with ESMTP id s6VIfU9q004656 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Thu, 31 Jul 2014 18:41:30 GMT Received: from xmb-rcd-x08.cisco.com ([169.254.8.152]) by xhc-rcd-x07.cisco.com ([173.37.183.81]) with mapi id 14.03.0123.003; Thu, 31 Jul 2014 13:41:30 -0500 From: "Sami Boutros (sboutros)" To: "Shah, Himanshu" Thread-Topic: RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt Thread-Index: AQHPcL43MdQKFwuY10i9fAzq1cK1Rpu5z3cA///lHDCAAYYJgIAABRSAgAAGQoCAAAXQgIAABKiA Date: Thu, 31 Jul 2014 18:41:30 +0000 Message-ID: <4685936D-BE6E-4DFA-A483-83FE0AFCEDD3@cisco.com> References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> <001201cface4$33eaf1b0$9bc0d510$@olddog.co.uk> <40746B2300A8FC4AB04EE722A593182B76F4F63A@ONWVEXCHMB04.ciena.com> <003e01cface9$d1783ff0$7468bfd0$@olddog.co.uk> <40746B2300A8FC4AB04EE722A593182B76F4F68A@ONWVEXCHMB04.ciena.com> In-Reply-To: <40746B2300A8FC4AB04EE722A593182B76F4F68A@ONWVEXCHMB04.ciena.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.154.212.99] Content-Type: text/plain; charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/zQm213f9Yv_ubLx6k4cOyPre3-U Cc: "draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org" , "mpls@ietf.org" Subject: Re: [mpls] RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 18:41:34 -0000 Sure, I will update the draft to 09 requesting the value and re-submit today. Thanks, Sami On Jul 31, 2014, at 11:24 AM, Shah, Himanshu wrote: > Thanks Adrian - >=20 > Request to Authors (Sami/Siva/others) - >=20 > Can you please add the suggested text (below) in the draft in order to ob= tain the 0x8001 value from the IANA? >=20 > Thanks, > Himanshu >=20 > -----Original Message----- > From: Adrian Farrel [mailto:adrian@olddog.co.uk]=20 > Sent: Thursday, July 31, 2014 2:04 PM > To: Shah, Himanshu; 'Sami Boutros (sboutros)' > Cc: mpls@ietf.org; draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org > Subject: RE: RtgDir review: draft-ietf-mpls-lsp-ping-ttl-tlv-07.txt >=20 >> By no means I was wondering about the delay in review process. >> Sorry if it came off that way. >=20 > OK. Sorry if I'm grumpy. Sitting in the departure lounge at Rio airport p= utting up with stupid people being too loud! >=20 > Wrt IANA... > There is nothing allocated so far from 32768-49161 so IANA (left to their= own > devices) would allocate 32768 (which I think is 0x8000). > Thus, you need to do something if you want 0x8001. >=20 > As soon as I move this document to early allocation IANA will do a provis= ional allocation. Thus I will *not* do that until we have resolved this iss= ue or you will get 0x8000 and be unhappy. >=20 > But early allocation at this point is a waste of effort. >=20 > Please simply add to the I-D "IANA is requested to allocate the value 327= 69." > Then we can all go ahead quickly and get the right results. >=20 > Cheers, > Adrian >=20 > PS. On a separate rant! Picking a value at random during implementation = and deploying it is crazy behavior likely to get you in a real mess when so= me other implementer picks the same value for a different feature. We have = a registry for a reason. Please don't break the Internet by ignoring the pr= ocess, but get into the habit of using RFC 7120 for early allocation when a= ppropriate (not after the > fact!) >=20 From nobody Thu Jul 31 16:33:28 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E571A1A02E7 for ; Thu, 31 Jul 2014 16:33:26 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -114.502 X-Spam-Level: X-Spam-Status: No, score=-114.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 0H-SomNn8bm9 for ; Thu, 31 Jul 2014 16:33:24 -0700 (PDT) Received: from rcdn-iport-6.cisco.com (rcdn-iport-6.cisco.com [173.37.86.77]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 6DE9B1A02BA for ; Thu, 31 Jul 2014 16:33:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3701; q=dns/txt; s=iport; t=1406849604; x=1408059204; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=O0lnGZxsNP92bEBKBs6OmyKiS+cFJYneOSFZV0kMDms=; b=DgaxOciUIde9uv1DqXw5Q/dY4wk4BS0Zzg143wU2TuLylqIc30Gx+/JN yZ6e6YHgTJLoHf0OJJXkGv6gQ9BCSrsYRHELhVAEHTFRaGnkwh2XF1pWS VscGrPOftFRV1omXOQrks0xTIu8rSp3llA8MW/5GPLyRPCoMyObX9i0jx g=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AioFAMHR2lOtJV2b/2dsb2JhbABbgmojUlcEzSaHSwGBCBZ3hAMBAQEDATo/DAQCAQgRAQMBAQsLCQkHMhQDBggBAQQBDQUIARKIHwgBDMsiF48bMQcGBIMlgRwFjmuhX4NJbIFF X-IronPort-AV: E=Sophos;i="5.01,775,1400025600"; d="scan'208";a="344290275" Received: from rcdn-core-4.cisco.com ([173.37.93.155]) by rcdn-iport-6.cisco.com with ESMTP; 31 Jul 2014 23:33:23 +0000 Received: from xhc-rcd-x06.cisco.com (xhc-rcd-x06.cisco.com [173.37.183.80]) by rcdn-core-4.cisco.com (8.14.5/8.14.5) with ESMTP id s6VNXND8000817 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Thu, 31 Jul 2014 23:33:23 GMT Received: from xmb-aln-x01.cisco.com ([fe80::747b:83e1:9755:d453]) by xhc-rcd-x06.cisco.com ([173.37.183.80]) with mapi id 14.03.0123.003; Thu, 31 Jul 2014 18:33:23 -0500 From: "Nobo Akiya (nobo)" To: Xuxiaohu , Lizhenbin , "draft-li-mpls-global-label-usecases@tools.ietf.org" Thread-Topic: Comments on draft-li-mpls-global-label-usecases Thread-Index: Ac+pyGOnOvdR466BTIiQqApCOmu/xgBMxX8pAFXSx/AAAgpoUAApuexA Date: Thu, 31 Jul 2014 23:33:22 +0000 Message-ID: References: <5A5B4DE12C0DAC44AF501CD9A2B01A8D08233D1D@nkgeml506-mbx.china.huawei.com> <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE0829A43F@NKGEML512-MBS.china.huawei.com> In-Reply-To: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE0829A43F@NKGEML512-MBS.china.huawei.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.86.255.170] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/P9htp4y7SL5z29HjQzH_Q7GI6dM Cc: "mpls@ietf.org" Subject: Re: [mpls] Comments on draft-li-mpls-global-label-usecases X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 23:33:27 -0000 Hi Xiaohu, > -----Original Message----- > From: Xuxiaohu [mailto:xuxiaohu@huawei.com] > Sent: Wednesday, July 30, 2014 9:40 PM > To: Nobo Akiya (nobo); Lizhenbin; draft-li-mpls-global-label- > usecases@tools.ietf.org > Cc: mpls@ietf.org > Subject: RE: Comments on draft-li-mpls-global-label-usecases >=20 > > 2. Service Chaining > > > > Why not let SFC folks to do their work, which SFC will then work on > > the MPLS data plane without any changes to the MPLS data plane nor > > architecture, certainly doesn't require any "global label" as this use > > case is describing. Unless the SFC WG require the "global label" > > (which it doesn't) or the MPLS WG is re-chartered to pick up creation > > of a tangent SFC solution specifically for MPLS, I don't think this use= case is > valid. > > [Robin] SFC WG truly works on some new header for service functions. > > We need to work out the when MPLS dataplane applied, what the possible > > problem and the solution. I think MPLS has been widely deployed in the > > existing network and SFC is the possible useful use case in MPLS > > network which should be taken into account in the MPLS world. MPLS > > global label is one of the possible solutions. This does not preclude o= ther > solutions. >=20 > [NOBO] SFC is data plane agnostic. When SFC runs on MPLS data plane, > there is no need to use global labels to describe service functions. >=20 > Hi Nobo, >=20 > It's fine that SFC is data plane agnostic. In the MPLS-SPRING-based SFC > approach (http://www.ietf.org/proceedings/90/slides/slides-90-spring- > 5.pdf) where the SFC-specific header is implemented in the form of an > MPLS label stack, the SFC-encapsulated packet (i.e., the MPLS packet) cou= ld > still be transported between service nodes over any transport such as MPL= S, > IP (e.g., MPLS-over-UDP or MPLS-over-GRE) or even Ethernet. To some > extent, the MPLS-SPRING-based SFC approach is data plane agnostic as well= . >=20 > As had been mentioned in the above PDF, if it's the SFP information that = is > encoded in the MPLS label stack, there is no need for global labels. Howe= ver, > provided that some operators did want to encode the SFC information, > rather than the SFP information in the MPLS label stack, the only feasibl= e > way to realize such goal is to use global labels. Here the global labels = just > need to be unique within the SFC-enabled domain, in other words, they are > domain-wide unique labels. Just like the global label usage proposed in t= he > segment routing mechanism, it only requires that a common label block, > referred to as SF Label Block (SFLB) is reserved by all service nodes and > Classifiers for SF SIDs. The domain-wide unique label for a given SF woul= d > be automatically determined by adding the SF ID to the first label value = of > the above SFLB. You are creating a framework document based on a use case document that inc= ludes use cases from another use case document that is still an individual = document. I understand the diff between SFC vs. SFs on SR and complications= of NSH on the latter, but the way you are claiming this as a use case seem= s premature. Let the SFC folks do their work. Let the SPRING folks do their= work. Let's focus our energy into helping to progress the two. If either o= f those spin off real inter-WG requirements, then we probably won't even ne= ed separate use case documents to start discussing solutions to address tho= se requirements. In other words, let's not take use cases w/o WG consensus = to drive additional use cases to drive solutions. Thanks! -Nobo =20 >=20 > Best regards, > Xiaohu From nobody Thu Jul 31 17:22:08 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 33A301A0310 for ; Thu, 31 Jul 2014 17:22:03 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.502 X-Spam-Level: X-Spam-Status: No, score=-14.502 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id sJGyuLUNS_XT for ; Thu, 31 Jul 2014 17:22:01 -0700 (PDT) Received: from alln-iport-6.cisco.com (alln-iport-6.cisco.com [173.37.142.93]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 622DD1A0305 for ; Thu, 31 Jul 2014 17:22:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=282; q=dns/txt; s=iport; t=1406852523; x=1408062123; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=69SaSS5opgUletUAVuglHeG8Tss1TNIhryRk/tvlu0g=; b=T8Pum3fp4+uMa4JUWr+2Q+g7hd6an/DdGOsJgZwYy+vhhlPu+dzZTgAS zPLVoCD2xmLkYXHNwP/A5kn/Cw9X8wnmC8k3rT0bDt3QULIrCJtUT4ean JwACqjk2/ZnBq919uyykhaY0bW7JlOGrnj0zRSTNJiRbs/kxupSLDBo4p A=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Ag0FAALd2lOtJV2U/2dsb2JhbABbgw2BLdNnAYEIFneEBAEBBDo/EAIBGiQFCzIXDgIEAQ2IR8smF49MB4MvgRwBBI5rjQmUVoIDgUaCMQ X-IronPort-AV: E=Sophos;i="5.01,775,1400025600"; d="scan'208";a="65631679" Received: from rcdn-core-12.cisco.com ([173.37.93.148]) by alln-iport-6.cisco.com with ESMTP; 01 Aug 2014 00:22:00 +0000 Received: from xhc-rcd-x11.cisco.com (xhc-rcd-x11.cisco.com [173.37.183.85]) by rcdn-core-12.cisco.com (8.14.5/8.14.5) with ESMTP id s710LwqG031735 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Fri, 1 Aug 2014 00:21:59 GMT Received: from xmb-rcd-x08.cisco.com ([169.254.8.152]) by xhc-rcd-x11.cisco.com ([173.37.183.85]) with mapi id 14.03.0123.003; Thu, 31 Jul 2014 19:21:58 -0500 From: "Sami Boutros (sboutros)" To: "mpls-chairs@tools.ietf.org" , "mpls@ietf.org" Thread-Topic: Request for Early allocation from LSP Parameters TLVs Registry for draft-ietf-mpls-lsp-ping-ttl-tlv Thread-Index: AQHPrR6bGn0bFnUfZ02B+UUe+jKiXw== Date: Fri, 1 Aug 2014 00:21:57 +0000 Message-ID: <96A58928-2B10-48FC-B627-A73D6C959B93@cisco.com> References: <2120028D-672D-423E-ADE1-CB61F4DFFB84@cisco.com> <40746B2300A8FC4AB04EE722A593182B76F4F1C4@ONWVEXCHMB04.ciena.com> <001201cface4$33eaf1b0$9bc0d510$@olddog.co.uk> <40746B2300A8FC4AB04EE722A593182B76F4F63A@ONWVEXCHMB04.ciena.com> <003e01cface9$d1783ff0$7468bfd0$@olddog.co.uk> In-Reply-To: <003e01cface9$d1783ff0$7468bfd0$@olddog.co.uk> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.154.212.99] Content-Type: text/plain; charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/6yQlaq3-ESqPJWir0N9yKvtMbpI Cc: "draft-ietf-mpls-lsp-ping-ttl-tlv.all@tools.ietf.org" Subject: [mpls] Request for Early allocation from LSP Parameters TLVs Registry for draft-ietf-mpls-lsp-ping-ttl-tlv X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Aug 2014 00:22:03 -0000 Hi, IANA is requested to assign TLV type value to the following TLV from the "M= ultiprotocol Label Switching Architecture (MPLS) Label Switched Paths (LSPs= ) Parameters - TLVs" registry, "TLVs and sub-TLVs" sub-registry. The value requested is 32769. Thanks, Sami= From nobody Thu Jul 31 18:38:02 2014 Return-Path: X-Original-To: mpls@ietfa.amsl.com Delivered-To: mpls@ietfa.amsl.com Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1FC1B1A0368; Thu, 31 Jul 2014 18:37:59 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.202 X-Spam-Level: X-Spam-Status: No, score=-4.202 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id MfPbxyzy9kFL; Thu, 31 Jul 2014 18:37:55 -0700 (PDT) Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 08B7E1A0373; Thu, 31 Jul 2014 18:37:50 -0700 (PDT) Received: from 172.18.7.190 (EHLO lhreml406-hub.china.huawei.com) ([172.18.7.190]) by lhrrg01-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id BKT71851; Fri, 01 Aug 2014 01:37:49 +0000 (GMT) Received: from nkgeml405-hub.china.huawei.com (10.98.56.36) by lhreml406-hub.china.huawei.com (10.201.5.243) with Microsoft SMTP Server (TLS) id 14.3.158.1; Fri, 1 Aug 2014 02:37:47 +0100 Received: from NKGEML512-MBS.china.huawei.com ([169.254.8.48]) by nkgeml405-hub.china.huawei.com ([10.98.56.36]) with mapi id 14.03.0158.001; Fri, 1 Aug 2014 09:37:37 +0800 From: Xuxiaohu To: "Nobo Akiya (nobo)" , Lizhenbin , "draft-li-mpls-global-label-usecases@tools.ietf.org" Thread-Topic: Comments on draft-li-mpls-global-label-usecases Thread-Index: Ac+pyGOnOvdR466BTIiQqApCOmu/xgBMxX8pAFXSx/AAAgpoUAApuexAAAjFzTA= Date: Fri, 1 Aug 2014 01:37:37 +0000 Message-ID: <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE0829BA49@NKGEML512-MBS.china.huawei.com> References: <5A5B4DE12C0DAC44AF501CD9A2B01A8D08233D1D@nkgeml506-mbx.china.huawei.com> <1FEE3F8F5CCDE64C9A8E8F4AD27C19EE0829A43F@NKGEML512-MBS.china.huawei.com> In-Reply-To: Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.111.98.134] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: http://mailarchive.ietf.org/arch/msg/mpls/RKQYEaGfzpT_9srl0WfFygU9T6k Cc: "mpls@ietf.org" , "" , "sfc@ietf.org" Subject: Re: [mpls] Comments on draft-li-mpls-global-label-usecases X-BeenThere: mpls@ietf.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Multi-Protocol Label Switching WG List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Aug 2014 01:37:59 -0000 > -----Original Message----- > From: Nobo Akiya (nobo) [mailto:nobo@cisco.com] > Sent: Friday, August 01, 2014 7:33 AM > To: Xuxiaohu; Lizhenbin; draft-li-mpls-global-label-usecases@tools.ietf.o= rg > Cc: mpls@ietf.org > Subject: RE: Comments on draft-li-mpls-global-label-usecases >=20 > Hi Xiaohu, >=20 > > -----Original Message----- > > From: Xuxiaohu [mailto:xuxiaohu@huawei.com] > > Sent: Wednesday, July 30, 2014 9:40 PM > > To: Nobo Akiya (nobo); Lizhenbin; draft-li-mpls-global-label- > > usecases@tools.ietf.org > > Cc: mpls@ietf.org > > Subject: RE: Comments on draft-li-mpls-global-label-usecases > > > > > 2. Service Chaining > > > > > > Why not let SFC folks to do their work, which SFC will then work on > > > the MPLS data plane without any changes to the MPLS data plane nor > > > architecture, certainly doesn't require any "global label" as this > > > use case is describing. Unless the SFC WG require the "global label" > > > (which it doesn't) or the MPLS WG is re-chartered to pick up > > > creation of a tangent SFC solution specifically for MPLS, I don't > > > think this use case is > > valid. > > > [Robin] SFC WG truly works on some new header for service functions. > > > We need to work out the when MPLS dataplane applied, what the > > > possible problem and the solution. I think MPLS has been widely > > > deployed in the existing network and SFC is the possible useful use > > > case in MPLS network which should be taken into account in the MPLS > > > world. MPLS global label is one of the possible solutions. This does > > > not preclude other > > solutions. > > > > [NOBO] SFC is data plane agnostic. When SFC runs on MPLS data plane, > > there is no need to use global labels to describe service functions. > > > > Hi Nobo, > > > > It's fine that SFC is data plane agnostic. In the MPLS-SPRING-based > > SFC approach > > (http://www.ietf.org/proceedings/90/slides/slides-90-spring- > > 5.pdf) where the SFC-specific header is implemented in the form of an > > MPLS label stack, the SFC-encapsulated packet (i.e., the MPLS packet) > > could still be transported between service nodes over any transport > > such as MPLS, IP (e.g., MPLS-over-UDP or MPLS-over-GRE) or even > > Ethernet. To some extent, the MPLS-SPRING-based SFC approach is data pl= ane > agnostic as well. > > > > As had been mentioned in the above PDF, if it's the SFP information > > that is encoded in the MPLS label stack, there is no need for global > > labels. However, provided that some operators did want to encode the > > SFC information, rather than the SFP information in the MPLS label > > stack, the only feasible way to realize such goal is to use global > > labels. Here the global labels just need to be unique within the > > SFC-enabled domain, in other words, they are domain-wide unique > > labels. Just like the global label usage proposed in the segment > > routing mechanism, it only requires that a common label block, > > referred to as SF Label Block (SFLB) is reserved by all service nodes > > and Classifiers for SF SIDs. The domain-wide unique label for a given > > SF would be automatically determined by adding the SF ID to the first l= abel > value of the above SFLB. >=20 > You are creating a framework document based on a use case document that > includes use cases from another use case document that is still an indivi= dual > document. I understand the diff between SFC vs. SFs on SR and complicatio= ns of > NSH on the latter, but the way you are claiming this as a use case seems > premature. Let the SFC folks do their work. Let the SPRING folks do their= work. > Let's focus our energy into helping to progress the two. If either of tho= se spin off > real inter-WG requirements, then we probably won't even need separate use > case documents to start discussing solutions to address those requirement= s. In > other words, let's not take use cases w/o WG consensus to drive additiona= l use > cases to drive solutions. Hi Nobo, I'm not creating a framework doc. I'm just expressing a different opinion f= rom your argument as below: > > [NOBO] SFC is data plane agnostic. When SFC runs on MPLS data plane, > > there is no need to use global labels to describe service functions. That is: even when SFC runs on MPLS data plane, it's still feasible to use = the MPLS label stack to describe the SFP or the SFC information. Furthermor= e, in the latter case (i.e., encoding SFC information in the label stack), = using global labels (i.e., domain-wide unique label) to indicate SFs is the= only choice. Otherwise, the SFF (contained in the service node device) may= need to swap the whole label stack. BTW, global labels (i.e., domain-wide = unique label) just need to be processed by classifiers and service nodes. T= he underlay could be IP networks (e.g., using MPLS-in-UDP). It doesn't requ= ire any change to the existing data plane. In other words, it's just a netw= ork configuration issue. Hence I really don't understand why you and some o= ther guys are so strongly opposing the usage of global labels.=20 Best regards, Xiaohu > Thanks! >=20 > -Nobo >=20 > > > > Best regards, > > Xiaohu
Hi Ron,

I would be very very carefull to place matadata inband (ie embed it in cust= omer data packets) of data plane.=C2=A0

Few reasons for consideration:

-= Adding anything over hundred bytes may become pretty overwhelming for smal= l size customer packets

- Adding anything over already maxed = size packet may cause MTU issues and fragmentation (which in many cases is = not possible in the middle of the network). Keep in mind also encrypted dat= a.

- Anything which is variable length i= n the data plane and which is opaque to the data plane causes additional da= ta plane requirements which a lot of hardware may have a hard time to deal = with

- Inband transport provides no option= to pre-populate the state at the backup devices / backup paths where no ac= tive traffic is traversing before any network event affecting primary path<= /div>

- A lot of appliances may not be able= to be transparent to opaque variable length metadata resulting in metadata= information loss.=C2=A0

For all of the above reasons (and I a= m sure many more not listed above) I would keep customer data packets alone= and when needed limit only insertion of a pointer to metadata context lear= ned out-of-band. (Out-of-band is a bit misleading term here as metadata can= happily travel via the same set of links as customer data. What it really = means is out-of-customer-data-packets).=C2=A0

Best regards,
R.



On Fri, Jul 18, 2014 at 2:05 PM, Ron Parker <Ron_Parker@affirmednetworks.com> wrote:

Robert,

=C2=A0

Inband is one way -- it s= implifies things at the cost of packet growth.=C2=A0=C2=A0 Out-of-band (i.e= ., signaling) is another way =E2=80=93 it adds complexity but doesn=E2=80= =99t grow the data plane packets.=C2=A0=C2=A0 Congruent out-of-band is a variation o= n out-of-band that may partially reduce out-of-band complexity.=C2=A0=C2=A0= =C2=A0 I think many opinions on the thread have been that all are in scope,= architecturally.=C2=A0=C2=A0=C2=A0 Draft-zhang-sfc-sch (I am a co-author), for example, defines inband metadata explicitly, but states in text that o= ut-of-band is possible, too.=C2=A0=C2=A0=C2=A0 I=E2=80=99m sure this will b= e a topic of discussion when we start discussing control plane requirements= .

=C2=A0

=C2=A0=C2=A0 Ron

=C2=A0

From: sfc [m= ailto:sfc-bounces= @ietf.org] On Behalf Of Robert Raszuk


Sent: Friday, July 18, 2014 3:27 AM
To: Xuxiaohu; sfc@= ietf.org
Cc: mpls@ietf.org= ; <spring@ietf.= org>
Subject: Re: [sfc] [spring] How to carry metadata/context in a= n MPLS packet

=C2=A0

= All,

= =C2=A0

= Is the idea of using data plane to carry complete metadata is "the way= " or "a way" of approaching the problem ? Has this been alre= ady discussed ?

= =C2=A0

= I would rather consider to carry metadata in control plane and only attach = a reference_id (and only when it is needed) to the data plane.=C2=A0=

= =C2=A0

= Rgs,

= R.

= =C2=A0

= =C2=A0

= =C2=A0

=C2=A0<= /p>

On Fri, Jul 18, 2014 at 3:58 AM, Xuxiaohu <xuxiaohu@huawei.com&= gt; wrote:

Hi all,

I'm now considering how to carry metadata/context in an MPLS packet. I = just noticed that draft-guichard-mpls-metadata-00 (htt= p://tools.ietf.org/html/draft-guichard-mpls-metadata-00#page-6) proposes a way to carry metadata/context in an MPLS packet (see below):
"3. =C2=A0Metadata Channel Header Format

=C2=A0 =C2=A0The presence of metadata within an MPLS packet must be indicat= ed in
=C2=A0 =C2=A0the encapsulation. =C2=A0This document defines that the G-ACh = Generic
=C2=A0 =C2=A0Associated Channel Label (GAL) [RFC5586] with label value 13 i= s
=C2=A0 =C2=A0utilized for this purpose. =C2=A0The GAL label provides a meth= od to
=C2=A0 =C2=A0identify that a packet contains an "Associated Channel He= ader (ACH)"
=C2=A0 =C2=A0followed by a non-service payload.

=C2=A0 =C2=A0[RFC5586] identifies the G-ACh Generic Associated Channel by s= etting
=C2=A0 =C2=A0the first nibble of the ACH that immediately follows the botto= m label
=C2=A0 =C2=A0in the stack if the GAL label is present, to 0001b. =C2=A0Furt= her
=C2=A0 =C2=A0[RFC5586] expects that the ACH not be used to carry user data<= br> =C2=A0 =C2=A0traffic. =C2=A0This document proposes an extension to allow th= e first
=C2=A0 =C2=A0nibble of the ACH to be set to 0000b and, when following the G= AL, be
=C2=A0 =C2=A0interpreted using the semantics defined in
=C2=A0 =C2=A0[I-D.guichard-metadata-header] to allow metadata to be carried=
=C2=A0 =C2=A0through the G-ACh channel."

However, it seems that the special usage of the GAL as mentioned above stil= l conflicts with the following statement quoted from [RFC5586]:

" =C2=A0The GAL MUST NOT appear in the label stack when transporting n= ormal
=C2=A0 =C2=A0user-plane packets. =C2=A0Furthermore, when present, the GAL M= UST NOT
=C2=A0 =C2=A0appear more than once in the label stack."

I wonder whether the special usage of the GAL as proposed in the above draf= t would result in any backward compatibility issue. In addition, I wonder w= hether it's worthwhile to reconsider the possibility of introducing a P= rotocol Type (PT) field immediately after the bottom of the MPLS label stack. With such PT field, any kind of = future MPLS payload (e.g., metadata header or NSH) can be easily identified= .

Best regards,
Xiaohu

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