From nobody Thu Apr 5 09:58:53 2018 Return-Path: X-Original-To: pals@ietf.org Delivered-To: pals@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 3BFAE12DA4E; Thu, 5 Apr 2018 09:58:49 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: Liaison Statement Management Tool To: "Paul Nikolich" , "Glen Parsons" , "John Messenger" , Cc: Martin Vigoureux , Deborah Brungard , Stewart Bryant , David Sinicrope , Pseudowire And LDP-enabled Services Discussion List , John Drake , Alvaro Retana , Andrew Malis , Scott Mansfield , Eric Gray , itu-t-liaison@iab.org, Raghu Ranganathan X-Test-IDTracker: no X-IETF-IDTracker: 6.77.1 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <152294752911.25830.13549796837861878880.idtracker@ietfa.amsl.com> Date: Thu, 05 Apr 2018 09:58:49 -0700 Archived-At: Subject: [Pals] New Liaison Statement, "IETF PALS Working Group on the Control Word for Ethernet Pseudowires" X-BeenThere: pals@ietf.org X-Mailman-Version: 2.1.22 List-Id: "Pseudowire And LDP-enabled Services dicussion list." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 05 Apr 2018 16:58:52 -0000 Title: IETF PALS Working Group on the Control Word for Ethernet Pseudowires Submission Date: 2018-04-05 URL of the IETF Web page: https://datatracker.ietf.org/liaison/1571/ From: Andrew Malis To: Paul Nikolich ,Glen Parsons ,John Messenger ,rraghu@ciena.com Cc: John Drake ,Deborah Brungard ,Stewart Bryant ,David Sinicrope ,Pseudowire And LDP-enabled Services Discussion List ,Martin Vigoureux ,Alvaro Retana ,Andrew Malis ,Scott Mansfield ,Eric Gray ,itu-t-liaison@iab.org,Raghu Ranganathan Response Contacts: Andrew Malis ,Stewart Bryant Technical Contacts: Purpose: For information Body: The pseudowire (PW) encapsulation of Ethernet, as defined in IETF RFC 4448, specifies that the use of the Control Word (CW) is optional. When the CW is not used in an Ethernet PW, it has been found to be operationally common for deployed MPLS label switching routers (LSRs) to search past the end of the label stack to determine whether the payload is an IP packet, and if it thinks that the payload is an IP packet based on the first four bits of the payload being equal to 0x4 or 0x6, to use equal-cost-multi-path (ECMP) algorithms to select the next hop based of the so called IP "five-tuple" (IP source address, IP destination address, protocol/next-header, transport layer source port and transport layer destination port). In the absence of a PW CW, an Ethernet pseudowire packet can be misidentified as an IP packet by a LSR selecting the ECMP path based on the presumed (but incorrect) IP five-tuple. This in turn may lead to the selection of the wrong equal-cost-multi-path (ECMP) path for the packet, leading in turn to the misordering of payload Ethernet frames. Further discussion of this topic is published in IETF RFC 4928. Frame misordering can also happen in a single path scenario when traffic classification and differential forwarding treatment mechanisms are in use. This occurs when a forwarder incorrectly assumes that the packet is IP and applies forwarding policy based on fields in the PW payload. This problem has recently become more serious in operational networks for several reasons. The first is due to the more common deployment of equipment with Ethernet MAC addresses that start with 0x4 or 0x6 as assigned by the IEEE Registration Authority (RA). Secondly, concerns over privacy have led to the use of MAC address randomization which assigns local MAC addresses randomly for privacy. Random assignment produces addresses starting with one of the two values about 1/8 of the time. The use of the Ethernet PW CW addresses this problem. The IETF PALS Working Group has written a draft RFC that recommends the use of the Ethernet pseudowire Control Word in all but exceptional circumstances. This draft is close to completion in the PALS Working Group, and may be found online at https://tools.ietf.org/html/draft-ietf-pals-ethernet-cw . Organizations that write specifications that include the use of Ethernet PW technology are recommended to be familiar with this draft and take any actions with their respective specifications they think are needed to address the draft. We anticipate its publication as an IETF RFC in the coming months. Interested individuals are invited to provide comments to the PALS email list, pals@ietf.org . Regards, Andrew G. Malis and Stewart Bryant Attachments: Control Word for Ethernet Pseudowires https://www.ietf.org/lib/dt/documents/LIAISON/liaison-2018-04-05-pals-itu-t-sg-15-ieee-802-1-broadband-forum-mef-ietf-pals-working-group-on-the-control-word-for-ethernet-pseudowires-attachment-1.pdf From nobody Sun Apr 8 04:35:52 2018 Return-Path: X-Original-To: pals@ietfa.amsl.com Delivered-To: pals@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 9EFD31241F3 for ; Sun, 8 Apr 2018 04:35:50 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.21 X-Spam-Level: X-Spam-Status: No, score=-4.21 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01] autolearn=ham autolearn_force=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 Tv6AQjEreu8B for ; Sun, 8 Apr 2018 04:35:48 -0700 (PDT) Received: from huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 0CB501200F1 for ; Sun, 8 Apr 2018 04:35:48 -0700 (PDT) Received: from LHREML711-CAH.china.huawei.com (unknown [172.18.7.108]) by Forcepoint Email with ESMTP id 16A622631BB7D for ; Sun, 8 Apr 2018 12:35:44 +0100 (IST) Received: from DGGEML402-HUB.china.huawei.com (10.3.17.38) by LHREML711-CAH.china.huawei.com (10.201.108.34) with Microsoft SMTP Server (TLS) id 14.3.382.0; Sun, 8 Apr 2018 12:35:45 +0100 Received: from DGGEML507-MBS.china.huawei.com ([169.254.1.253]) by DGGEML402-HUB.china.huawei.com ([fe80::fca6:7568:4ee3:c776%31]) with mapi id 14.03.0361.001; Sun, 8 Apr 2018 19:35:37 +0800 From: Jiangyuanlong To: "Andrew G. Malis" , "pals@ietf.org" CC: "matthew.bocci@alcatel-lucent.com" , "BRUNGARD, DEBORAH A (ATTLABS)" Thread-Topic: [Pals] WG last call for draft-ietf-pals-ethernet-cw-04 Thread-Index: AQHTwO4eotkTOB3i7UmZ1r3sV1MPuKP2zosw Date: Sun, 8 Apr 2018 11:35:36 +0000 Message-ID: <3B0A1BED22CAD649A1B3E97BE5DDD68BBB6CB0EB@dggeml507-mbs.china.huawei.com> References: In-Reply-To: Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.74.202.215] Content-Type: multipart/alternative; boundary="_000_3B0A1BED22CAD649A1B3E97BE5DDD68BBB6CB0EBdggeml507mbschi_" MIME-Version: 1.0 X-CFilter-Loop: Reflected Archived-At: Subject: Re: [Pals] WG last call for draft-ietf-pals-ethernet-cw-04 X-BeenThere: pals@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "Pseudowire And LDP-enabled Services dicussion list." 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[213.123.124.182]) by smtp.gmail.com with ESMTPSA id q81sm10602538wmg.8.2018.04.16.07.43.44 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 16 Apr 2018 07:43:46 -0700 (PDT) To: pals@ietf.org References: <3B0A1BED22CAD649A1B3E97BE5DDD68BBB6CB0EB@dggeml507-mbs.china.huawei.com> From: Stewart Bryant Message-ID: Date: Mon, 16 Apr 2018 15:43:40 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 In-Reply-To: <3B0A1BED22CAD649A1B3E97BE5DDD68BBB6CB0EB@dggeml507-mbs.china.huawei.com> Content-Type: multipart/alternative; boundary="------------D68ABB7EC0F8CB1775557675" Content-Language: en-GB Archived-At: Subject: Re: [Pals] WG last call for draft-ietf-pals-ethernet-cw-04 X-BeenThere: pals@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "Pseudowire And LDP-enabled Services dicussion list." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 16 Apr 2018 14:43:57 -0000 This is a multi-part message in MIME format. --------------D68ABB7EC0F8CB1775557675 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Hi Yuanlong Thank you for your comments. Please see inline. On 08/04/2018 12:35, Jiangyuanlong wrote: > > Hi Andy, > > I have read the latest draft and support its publication. > > However, there are some minor editorial comments or suggestions you > may consider: > > 1.In the “Abstract” and “Introduction”, “RFC4448” should be replaced > with “RFC 4448” or "[RFC4448]"; > Done > 2.In the “Introduction”, replace “based of” with “based on”; replace > “deployment of equipment” with “deployment of equipments”; the first > ‘ECMP’ is not expanded while the 2^nd is fully expanded; > Done except equipment which after consulting a couple of dictionaries I will leave to the RFC Editor to decide. > 3.In the “Introduction”, “about 1/8 of the time” may be replaced with > “about 1/8 in statistics”; > I have reworded to "Random assignment results in addresses starting with one of these two values one time in eight." The only time when it is not exactly 1 in 8 is when the RNG is biased. > 4.In Section 3 “Background”, “more complex, proprietary, methods” can > be replaced with “more complex and proprietary methods”; > I think the original is correct, but if I am wrong the RFC Editor will pick it up. > 5.In Section 4 “Recommendation”, “a Ethernet PW” shall be “an Ethernet > PW”; remove one ‘both’ from “both both”; > Done > 6.In Section 4 “Recommendation”, “if ELI/EL is used then it should be > used on every segment of the PW” where “should” can be capitalized, as > this is a recommendation IMO; > Done > 7.In Section 5 “Equal Cost Multi-path (ECMP)”, insert “are” to “In > both cases there considerations” behind ‘there’; > Done > 8.In Section 6 “Mitigations”, insert ')' after “[RFC3209]”; > Done > 9.In Section 7 “Operational Considerations”, ‘emits’ should be ‘emit’; > I think "emits" is OK. The RFC Editor will catch it if I am wrong. Thanks Stewart > Thanks, > > Yuanlong > > *From:*Pals [mailto:pals-bounces@ietf.org] *On Behalf Of *Andrew G. Malis > *Sent:* Wednesday, March 21, 2018 4:24 PM > *To:* pals@ietf.org > *Cc:* matthew.bocci@alcatel-lucent.com; BRUNGARD, DEBORAH A (ATTLABS) > *Subject:* [Pals] WG last call for draft-ietf-pals-ethernet-cw-04 > > Having heard from the authors regarding IPR, it’s now time to start WG > last call for https://tools.ietf.org/html/draft-ietf-pals-ethernet-cw-04 . > > As a reminder, since our two WG co-chairs are also co-authors on this > draft, Matthew Bocci, former PWE3 co-chair, has kindly volunteered to > act as document shepherd for the draft, and will be in charge of > determining consensus on the document and also managing the last call > review process. > > As the IETF meeting is now in progress, this will be a three-week last > call, ending Wednesday April 11. Please send comments and reviews to > pals@ietf.org . Also, indications that the > draft has been read and is (or isn’t) ready for publication would also > be appreciated. If you feel that that draft isn’t yet ready for > publication, please include your reasons and suggested improvements. > > Thanks, > > Andy > > > > _______________________________________________ > Pals mailing list > Pals@ietf.org > https://www.ietf.org/mailman/listinfo/pals --------------D68ABB7EC0F8CB1775557675 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit

Hi Yuanlong

Thank you for your comments. Please see inline.


On 08/04/2018 12:35, Jiangyuanlong wrote:

Hi Andy,

 

I have read the latest draft and support its publication.

However, there are some minor editorial comments or suggestions you may consider:

1.       In the “Abstract” and “Introduction”, “RFC4448” should be replaced with “RFC 4448” or "[RFC4448]";

Done

2.       In the “Introduction”, replace “based of” with “based on”; replace “deployment of equipment” with “deployment of equipments”; the first ‘ECMP’ is not expanded while the 2nd is fully expanded;

Done except equipment which after consulting a couple of dictionaries I will leave to the RFC Editor to decide.

3.       In the “Introduction”, “about 1/8 of the time” may be replaced with “about 1/8 in statistics”;

I have reworded to

"Random assignment results in addresses starting with one of these two values
one time in eight."

The only time when it is not exactly 1 in 8 is when the RNG is biased.

4.       In Section 3 “Background”, “more complex, proprietary, methods” can be replaced with “more complex and proprietary methods”;


I think the original is correct, but if I am wrong the RFC Editor will pick it up.

5.       In Section 4 “Recommendation”, “a Ethernet PW” shall be “an Ethernet PW”; remove one ‘both’ from “both both”;

Done

6.       In Section 4 “Recommendation”, “if ELI/EL is used then it should be used on every segment of the PW” where “should” can be capitalized, as this is a recommendation IMO;

Done

7.       In Section 5 “Equal Cost Multi-path (ECMP)”, insert “are” to “In both cases there considerations” behind ‘there’;

Done

8.       In Section 6 “Mitigations”, insert ')' after “[RFC3209]”;

Done

9.       In Section 7 “Operational Considerations”, ‘emits’ should be ‘emit’;


I think "emits" is OK. The RFC Editor will catch it if I am wrong.

Thanks

Stewart

 

Thanks,

Yuanlong

 

From: Pals [mailto:pals-bounces@ietf.org] On Behalf Of Andrew G. Malis
Sent: Wednesday, March 21, 2018 4:24 PM
To: pals@ietf.org
Cc: matthew.bocci@alcatel-lucent.com; BRUNGARD, DEBORAH A (ATTLABS)
Subject: [Pals] WG last call for draft-ietf-pals-ethernet-cw-04

 

Having heard from the authors regarding IPR, it’s now time to start WG last call for https://tools.ietf.org/html/draft-ietf-pals-ethernet-cw-04 .

 

As a reminder, since our two WG co-chairs are also co-authors on this draft, Matthew Bocci, former PWE3 co-chair, has kindly volunteered to act as document shepherd for the draft, and will be in charge of determining consensus on the document and also managing the last call review process.

 

As the IETF meeting is now in progress, this will be a three-week last call, ending Wednesday April 11. Please send comments and reviews to pals@ietf.org . Also, indications that the draft has been read and is (or isn’t) ready for publication would also be appreciated. If you feel that that draft isn’t yet ready for publication, please include your reasons and suggested improvements.

 

Thanks,

Andy

 



_______________________________________________
Pals mailing list
Pals@ietf.org
https://www.ietf.org/mailman/listinfo/pals

--------------D68ABB7EC0F8CB1775557675-- From nobody Mon Apr 16 08:17:00 2018 Return-Path: X-Original-To: pals@ietf.org Delivered-To: pals@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 6215312DA2B; Mon, 16 Apr 2018 08:16:58 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: pals@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.78.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <152389181834.20977.10334784845275674172@ietfa.amsl.com> Date: Mon, 16 Apr 2018 08:16:58 -0700 Archived-At: Subject: [Pals] I-D Action: draft-ietf-pals-ethernet-cw-05.txt X-BeenThere: pals@ietf.org X-Mailman-Version: 2.1.22 List-Id: "Pseudowire And LDP-enabled Services dicussion list." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 16 Apr 2018 15:16:58 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Pseudowire And LDP-enabled Services WG of the IETF. Title : Use of Ethernet Control Word RECOMMENDED Authors : Stewart Bryant Andrew G Malis Ignas Bagdonas Filename : draft-ietf-pals-ethernet-cw-05.txt Pages : 9 Date : 2018-04-16 Abstract: The pseudowire (PW) encapsulation of Ethernet, as defined in RFC 4448, specifies that the use of the control word (CW) is optional. In the absence of the CW an Ethernet pseudowire packet can be misidentified as an IP packet by a label switching router (LSR). This in turn may lead to the selection of the wrong equal-cost-multi- path (ECMP) path for the packet, leading in turn to the misordering of packets. This problem has become more serious due to the deployment of equipment with Ethernet MAC addresses that start with 0x4 or 0x6. The use of the Ethernet PW CW addresses this problem. This document recommends the use of the Ethernet pseudowire control word in all but exceptional circumstances. This document updates RFC 4448. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-pals-ethernet-cw/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-pals-ethernet-cw-05 https://datatracker.ietf.org/doc/html/draft-ietf-pals-ethernet-cw-05 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-pals-ethernet-cw-05 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 Apr 16 08:20:34 2018 Return-Path: X-Original-To: pals@ietfa.amsl.com Delivered-To: pals@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C242B127863 for ; Mon, 16 Apr 2018 08:20:32 -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, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com 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 zNJBGqlKj88u for ; Mon, 16 Apr 2018 08:20:31 -0700 (PDT) Received: from mail-wr0-x232.google.com (mail-wr0-x232.google.com [IPv6:2a00:1450:400c:c0c::232]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id AF01F1242F5 for ; Mon, 16 Apr 2018 08:20:30 -0700 (PDT) Received: by mail-wr0-x232.google.com with SMTP id u46so27144049wrc.11 for ; Mon, 16 Apr 2018 08:20:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-transfer-encoding:content-language; bh=DEuxHOHkZIF62dMxLALwEsunAXWIgOc8s3XN8a//4cU=; b=b69x9i6bIppQ7PU8+ejsWzHgh2uEw918YNprkkdSBkuMsCq0t/KArZFFA4p135d2vy cF640LzpW1G+dXfj6Q0ZCZXIdEVyt89lnQzjwN8vnyBnKZAzH8dXxGGFtI1cglDrUyaV PBKQ4d0VpJ/fzpA+VsPTEI2jDH82pB0GIZ1dHBy2QdunH1PZPtrW+UJEgjKjjC3YpKQg EANjk5FhIfT8wJp4Exy5SyjKyNr8W1K3gZyDV+Tvb3ybRTBIRrsru4aXMoullECmJmGB u22Lu3PrTMSSg4A1DnFU3mZW38sVcGtcL/sczwzrKVNzkoztwgVX1kpZiVqUnKfDR9d9 68RQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=DEuxHOHkZIF62dMxLALwEsunAXWIgOc8s3XN8a//4cU=; b=TWmKyb+A6d3unpDVaZxKmczYWf3g/RjuoMPxD+3qYLdU+v3BlUds+pgHQEAwgxo4/5 kJqiTGi+FbrGgdYybYayMD1BHfMgB7c6zxazKLYqFUbOUuKE2W53XSWcoaa8TYgZ1yQU f/HALLBGbV4hWcy9VW5R3e8Lz20EEqmuG3D5Tw7LSOwMaC5gcfJWWxJ4N/iDmszP+EgJ 4MBYnZOehQn/4KLXDZ4xsr5lVmnC6bQpOLZGDMwTBJNTRhgvZXtOesK38m17eSDq+IIz b99J0WPOKRAK5vSTo5LJgRBlvsiVfuroXBzFfOpeg1j7HfBusVfWhSpMNKV2TZcKpG6x oJzw== X-Gm-Message-State: ALQs6tAd4B+aR8rn7Ea3GWcGRpJxBuA9RvjBE0vIibdh1dTqnSkwPrQF 5guNoSAiehC549LnCiTKOH0nFEFY X-Google-Smtp-Source: AIpwx4+LKheGqBXmCNovWrKC9Em1qsSGgO/nN+5vIQ/ssfPOxMRg0Mor/7yhaYGYP0nNDmYbTQAJ1A== X-Received: by 10.28.232.206 with SMTP id f75mr11102233wmi.121.1523892028983; Mon, 16 Apr 2018 08:20:28 -0700 (PDT) Received: from [192.168.2.105] (host213-123-124-182.in-addr.btopenworld.com. [213.123.124.182]) by smtp.gmail.com with ESMTPSA id o101sm22962493wrb.44.2018.04.16.08.20.28 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 16 Apr 2018 08:20:28 -0700 (PDT) To: "pals@ietf.org" References: <152389181834.20977.10334784845275674172@ietfa.amsl.com> From: Stewart Bryant Message-ID: Date: Mon, 16 Apr 2018 16:20:27 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 In-Reply-To: <152389181834.20977.10334784845275674172@ietfa.amsl.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-GB Archived-At: Subject: Re: [Pals] I-D Action: draft-ietf-pals-ethernet-cw-05.txt X-BeenThere: pals@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "Pseudowire And LDP-enabled Services dicussion list." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 16 Apr 2018 15:20:33 -0000 This version addresses Yuanlong's comments as noted in my email earlier today. I think that this is now ready to go to the IESG as soon as Matthew writes up his Shepherd's report. - Stewart On 16/04/2018 16:16, internet-drafts@ietf.org wrote: > A New Internet-Draft is available from the on-line Internet-Drafts directories. > This draft is a work item of the Pseudowire And LDP-enabled Services WG of the IETF. > > Title : Use of Ethernet Control Word RECOMMENDED > Authors : Stewart Bryant > Andrew G Malis > Ignas Bagdonas > Filename : draft-ietf-pals-ethernet-cw-05.txt > Pages : 9 > Date : 2018-04-16 > > Abstract: > The pseudowire (PW) encapsulation of Ethernet, as defined in RFC > 4448, specifies that the use of the control word (CW) is optional. > In the absence of the CW an Ethernet pseudowire packet can be > misidentified as an IP packet by a label switching router (LSR). > This in turn may lead to the selection of the wrong equal-cost-multi- > path (ECMP) path for the packet, leading in turn to the misordering > of packets. This problem has become more serious due to the > deployment of equipment with Ethernet MAC addresses that start with > 0x4 or 0x6. The use of the Ethernet PW CW addresses this problem. > This document recommends the use of the Ethernet pseudowire control > word in all but exceptional circumstances. > > This document updates RFC 4448. > > > The IETF datatracker status page for this draft is: > https://datatracker.ietf.org/doc/draft-ietf-pals-ethernet-cw/ > > There are also htmlized versions available at: > https://tools.ietf.org/html/draft-ietf-pals-ethernet-cw-05 > https://datatracker.ietf.org/doc/html/draft-ietf-pals-ethernet-cw-05 > > A diff from the previous version is available at: > https://www.ietf.org/rfcdiff?url2=draft-ietf-pals-ethernet-cw-05 > > > 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/ > > _______________________________________________ > Pals mailing list > Pals@ietf.org > https://www.ietf.org/mailman/listinfo/pals