From nobody Wed Feb 10 13:26:25 2021 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id F1A473A136C for ; Wed, 10 Feb 2021 13:26:23 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -0.507 X-Spam-Level: X-Spam-Status: No, score=-0.507 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, MALFORMED_FREEMAIL=1.591, MIME_QP_LONG_LINE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=no autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=yahoo.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 u7vmJWy9Z-qW for ; Wed, 10 Feb 2021 13:26:22 -0800 (PST) Received: from sonic303-3.consmr.mail.bf2.yahoo.com (sonic303-3.consmr.mail.bf2.yahoo.com [74.6.131.42]) (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 BF64E3A136B for ; Wed, 10 Feb 2021 13:26:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1612992380; bh=yl32exf1xUtQf6mrYE2BCJRhjxTGvdG16fv/33EpDsM=; h=Date:Subject:From:To:References:From:Subject:Reply-To; b=AkFFhuRJLKUUknGRMM1xcaoG4wrtxq9wlybey7/j2F8cMrd+LxtR27TuianxBpTISQWObyWozQ0LVWke+4zVMOu9ZHOM09nqO+4AInboX6dnuA2qzjguRjfptAxTolrtXZ6IcpLDY0QeUHcDwNh/WcHE/KtvkkCHdWJN9LUhfzCIohOVq42Ti24lqX1IQexTKb3WZMyAzdkaI/CjoVoUv6yfxQ3Fa7ehWUrSwtl5dIvhk4DxJbPO8uNOkAknBNDF5LoMlhs9xYIBLGQ2VAc9cOxFWapXme/MEiavRQw4Is5yCiy3Bt71B1L+t0r2KtWohNwf75qYBNt0CZW1AzLKuw== X-SONIC-DKIM-SIGN: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1612992380; bh=lrWGBwC8iKCUkJuTNTh9nrv9y+7K6puJSnxZEPBDCSg=; h=X-Sonic-MF:Date:Subject:From:To:From:Subject; b=LHnMaGhGPZIfDAkC2z6uWK1gLImltU4kzUt7O7fD0sM4/El89SNIJjDlDAncaMVEQmNg9AtKg++xItc4F4xuSNQweYXfpGyVLwfK2H2ya2nyyyiVA7jkzbBwNeADh/70NeSz29XiHrLnaOk3kuYK/eSv9xCqmwnxL8Z2INFJWVA/xN3MGj/JQyhhZ3Lndiun6YIXEb/5P2acHCq2A1PCi3OAxLjtKo+YnpesdYDu9AzpU6fqGzqW8V89M630Bg/TbR3JQgnz6AtwMgmbksXuo+OdMln1qw1X1/GxKftHiaSK7CwSpqL20O0zGsKubo7gpEEEg6YnFfsMQ0P9ORbI8Q== X-YMail-OSG: m9__mjEVM1nNronL9OSxCqvbt7WeOS.Z07Rf6Qq9i.c2iTMsJBsRc4KstR6Wdnh AsJ85Fk_bxDQ4Lc07NsqMbLWJlwL5GccZg8.UiQ6fjM0WkE9OHEcrA5GQKsMWH4YmuKL6PVHzbGF JkV6cjxsMpEu5fKNInRFAgJibwBGPcb_CqDDf1663SY4_fyXbMibdFQS_sVZc7Lfw3aGEMTqGh8L Ql7Xez29.kFNhD0IFH3l9z4Z1ROFdIaNG0vvSgNOX9HqTZxypdj80j4cAb0GXfPuZptUP0BxHwSq QMSDMp_C3spbN49xgkJsblmDSXd5RD_uh3JzRvVfQtpvC7zxOcPfcOQej5ogWlVaRn1gn_9uh9.7 gjxaFfAPVilwxkUNm12f_5vat_qp2EdRX7tTGGL2gp9Zb6IFtjXNzJIlwQ2YqcFTa4MnSvmDESPp JOPtA5nd2lLAsb9w.GS3PlaLnJxFninKSdAXL3KbS3I2wY_o4hE2E5QFZUmIB9HQRkRGfQHxYnsf wR1dHssaLctmaUQnm0xxEI5Lplyi9HPWKxzmZJcGeGMVf541X8H9e6LPtz.H_MALU0oK.5JrCO_p jb96Xph0z_9ndeLWSWMe8MyXjCY4V.uOO8.YU8s4hHpN72Hk8YXoS.89D9Hg.TYK37oGvpvizV9b iQd8Z2iNLw4LjKW6_3nQnfG6xerKo6HmExZa0RoBaLaFbVeoudsxL7jc7w6lzj9CSJ3U1rHhcmAK y1hBflI7HnneIkYmY5td1cqfS1Y7p4zJXG2qD_GBBRTeErSCpKrRIH9Blo9yciir5Y1shFqClTpr 1sX6qA9.DbGWp3Lx83Uhit0Pe3dRpLNusBIT_xm5JqW7XsGUxo.yqRI9DshPJFOYLN69eUniUBa. 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Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3695819176_1598491571 Content-type: text/plain; charset="UTF-8" Content-transfer-encoding: quoted-printable BFD WG, =20 BFD WG will be meeting for 1 hour during IETF110.=20 =20 If you=E2=80=99d like to present, please send an email to the chairs with the nam= e of the draft, presenter name and duration of presentation. We encourage pr= esentations which will foster discussions (as opposed to only a=C2=A0 summary of= doc update). =20 Regards, Reshad & Jeff. =20 --B_3695819176_1598491571 Content-type: text/html; charset="UTF-8" Content-transfer-encoding: quoted-printable

BFD WG,<= /o:p>

 

BFD WG w= ill be meeting for 1 hour during IETF110.

=  

If you=E2=80= =99d like to present, please send an email to the chairs with the name of the = draft, presenter name and duration of presentation. We encourage presentatio= ns which will foster discussions (as opposed to only a=C2=A0 summary of doc upda= te).

 

Rega= rds,

Res= had & Jeff.

 

--B_3695819176_1598491571-- From nobody Fri Feb 12 16:33:57 2021 Return-Path: X-Original-To: rtg-bfd@ietf.org Delivered-To: rtg-bfd@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id A69313A1189; Fri, 12 Feb 2021 16:33:18 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: "\"IETF Secretariat\"" To: , Cc: martin.vigoureux@nokia.com, rtg-bfd@ietf.org Subject: bfd - Requested session has been scheduled for IETF 110 X-Test-IDTracker: no X-IETF-IDTracker: 7.25.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <161317639866.31337.17083006824587352799@ietfa.amsl.com> Date: Fri, 12 Feb 2021 16:33:18 -0800 Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 13 Feb 2021 00:33:21 -0000 Dear Reshad Rahman, The session(s) that you have requested have been scheduled. Below is the scheduled session information followed by the original request. bfd Session 1 (1:00 requested) Thursday, 11 March 2021, Session II 1530-1630 Room Name: Room 5 size: 505 --------------------------------------------- iCalendar: https://datatracker.ietf.org/meeting/110/sessions/bfd.ics Request Information: --------------------------------------------------------- Working Group Name: Bidirectional Forwarding Detection Area Name: Routing Area Session Requester: Reshad Rahman Number of Sessions: 1 Length of Session(s): 1 Hour Number of Attendees: 25 Conflicts to Avoid: Chair Conflict: idr grow rtgwg bess netmod netconf Technology Overlap: bier spring mpls teas pals sfc Key Participant Conflict: ccamp People who must be present: Jeffrey Haas Martin Vigoureux Reshad Rahman Resources Requested: Special Requests: --------------------------------------------------------- From nobody Tue Feb 16 16:25:57 2021 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C6F993A133E for ; 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Wed, 17 Feb 2021 00:25:52 +0000 Received: by smtp423.mail.bf1.yahoo.com (VZM Hermes SMTP Server) with ESMTPA ID 336c7a9cbf9fd6862e79c9d2fbed97d2; Wed, 17 Feb 2021 00:25:48 +0000 (UTC) User-Agent: Microsoft-MacOutlook/16.44.20121301 Date: Tue, 16 Feb 2021 19:25:46 -0500 Subject: Re: IETF110: Call for BFD presentations From: Reshad Rahman To: "rtg-bfd@ietf.org" Message-ID: <497D03C7-1028-4DD5-A546-A70222F31506@yahoo.com> Thread-Topic: IETF110: Call for BFD presentations References: In-Reply-To: Mime-version: 1.0 Content-type: multipart/alternative; boundary="B_3696348347_1651057537" X-Mailer: WebService/1.1.17712 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Apache-HttpAsyncClient/4.1.4 (Java/11.0.9.1) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 17 Feb 2021 00:25:55 -0000 > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3696348347_1651057537 Content-type: text/plain; charset="UTF-8" Content-transfer-encoding: quoted-printable BFD WG, =20 The WG will be meeting on Thursday March 11th during the 2nd session: https= ://datatracker.ietf.org/meeting/110/agenda/ =20 Regards, Reshad. =20 From: Rtg-bfd on behalf of Reshad Rahman Date: Wednesday, February 10, 2021 at 4:26 PM To: "rtg-bfd@ietf.org" Subject: IETF110: Call for BFD presentations =20 BFD WG, =20 BFD WG will be meeting for 1 hour during IETF110.=20 =20 If you=E2=80=99d like to present, please send an email to the chairs with the nam= e of the draft, presenter name and duration of presentation. We encourage pr= esentations which will foster discussions (as opposed to only a summary of = doc update). =20 Regards, Reshad & Jeff. =20 --B_3696348347_1651057537 Content-type: text/html; charset="UTF-8" Content-transfer-encoding: quoted-printable

BFD WG,<= /o:p>

 

The WG w= ill be meeting on Thursday March 11th during the 2nd s= ession: https://d= atatracker.ietf.org/meeting/110/agenda/

 

Regards,

Reshad.

 

<= p class=3DMsoNormal>From: Rtg-bfd <rtg-bfd-bounces@= ietf.org> on behalf of Reshad Rahman <reshad=3D40yahoo.com@dmarc.ietf.or= g>
Date: Wednesday, February 10, 2021 at 4:26 PM
To: = "rtg-bfd@ietf.org" <rtg-bfd@ietf.org>
Subject: IET= F110: Call for BFD presentations

 

BFD WG,

=

 

BFD WG will be me= eting for 1 hour during IETF110.

 

If you=E2=80=99d like t= o present, please send an email to the chairs with the name of the draft, pr= esenter name and duration of presentation. We encourage presentations which = will foster discussions (as opposed to only a  summary of doc update).<= /span>

 

Regards,<= /span>

Reshad &= amp; Jeff.

 

--B_3696348347_1651057537-- From nobody Sun Feb 21 22:55:27 2021 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7EE113A0C68 for ; Sun, 21 Feb 2021 22:55:26 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.097 X-Spam-Level: X-Spam-Status: No, score=-2.097 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=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 4I7SOVw7YiCK for ; Sun, 21 Feb 2021 22:55:24 -0800 (PST) Received: from mail-ej1-x62c.google.com (mail-ej1-x62c.google.com [IPv6:2a00:1450:4864:20::62c]) (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 3FF453A0C67 for ; Sun, 21 Feb 2021 22:55:24 -0800 (PST) Received: by mail-ej1-x62c.google.com with SMTP id j6so353934eja.12 for ; Sun, 21 Feb 2021 22:55:24 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=m8LFzAWpVNbi3SP9tOO2JRUENxMr0INwo3/UG5tNN50=; b=pY1EhzFojcHcl/e3QxmO8sjeyrhLut4aWZtlgz9DPp1IjgqFpv9kstZJoGd7B6Detl RzlhBuBpsDfVDwEt0fGuBjC7/Q5WiTfSSsHFQrEJRojg1i/6LA5Xc+94f8aTyoxd9Xqo SkzpeWDEDD/8+GideMG3dIR2ANLjmzq5LX7HR2MV+stdVElGI5kiRSSqY86HegUqmV8H E0cxtWS9twYOnb9Ec8v8zeNjQxt5mLTNKqeiIqribaBIDf5kaSvOwfPZOMd4j82OudGL axVkcjW03APKdzpi67qHWj4MF/I+iJatRCAcvF0T6nQ7D9HXYEmKfhHfw6IK2aKUEckR 9xLg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=m8LFzAWpVNbi3SP9tOO2JRUENxMr0INwo3/UG5tNN50=; b=FZkU6wxrNRusdneQhs70MkkC+ybHmfEfm6PY/I+VoXVDSMJSUvY6UAbluaLKJpGeX2 REGvGcV460qkFzi+9cg8CAOftPmG20xI98MJpOjNt+MFH8ZFDdNY6XSgTEkLPCFPIP2J bDQX7G6vTaZp30WG0ehNZV2iEAcHyjF/ZMA7gbqlH74TMQhjE334pUNZTbg5OgkHsjbG oWE6/UPjFUZ2GIpqMBUyVbqJN6kbNTPdPIROSz/XHMbQhlhkVLWs1YElHJuhBOy1cB3T N/4IWGFHyka1pYORjO4NcDVLFrEfDxqCmcPVObjr9arSXl8RUovKqgfazKTqr9rLsCe+ uX5w== X-Gm-Message-State: AOAM532p/bDOQjyTspe9ApLDSDcDVg9Zcu6dxhTMFxN0xyeu26Qp3KMv Q0h1r8BW/ccK3ImiUvkmilIZLzc/FnhXTvoOAvE= X-Google-Smtp-Source: ABdhPJzjTOLHCkFmrp+MtozRg/zP1zYKRJ7uWC18/N5vWm+cjNwm3R1TjdtlCQzAS9rklfJHU/ePiGrLRYo82K/WM4w= X-Received: by 2002:a17:907:75fa:: with SMTP id jz26mr8410687ejc.457.1613976922539; Sun, 21 Feb 2021 22:55:22 -0800 (PST) MIME-Version: 1.0 References: <161061832764.21019.1994746468167370229@ietfa.amsl.com> <22DEF317-0F24-47BB-9489-1C5A9D824172@yahoo.com> In-Reply-To: <22DEF317-0F24-47BB-9489-1C5A9D824172@yahoo.com> From: Santosh P K Date: Mon, 22 Feb 2021 12:25:11 +0530 Message-ID: Subject: Re: New Version Notification for draft-ietf-bfd-stability-07.txt To: Reshad Rahman Cc: rtg-bfd WG Content-Type: multipart/alternative; boundary="00000000000024cb9005bbe74938" Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Feb 2021 06:55:27 -0000 --00000000000024cb9005bbe74938 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Reshad, Sure I will address these comments too. Thanks Santosh P K On Sun, Jan 31, 2021 at 4:56 AM Reshad Rahman wrote: > Hi Santosh, > > > > Thanks for making the changes and addressing my comments. > > > > Nits: > > 1. Null was changed to NULL except in the header of section 4 > 2. In section 4, it=E2=80=99d be good to have informative references f= or CFM > and OWAMP. > > > > Regards, > > Reshad. > > > > *From: *Rtg-bfd on behalf of Santosh P K < > santosh.pallagatti@gmail.com> > *Date: *Thursday, January 14, 2021 at 8:35 AM > *To: *rtg-bfd WG > *Subject: *Fwd: New Version Notification for > draft-ietf-bfd-stability-07.txt > > > > I have refreshed stability draft. Diff from the previous version is > attached. > > ---------- Forwarded message --------- > From: > Date: Thu, Jan 14, 2021 at 3:28 PM > Subject: New Version Notification for draft-ietf-bfd-stability-07.txt > To: Ankur Saxena , Ashesh Mishra < > mishra.ashesh@gmail.com>, Mach Chen , Mahesh > Jethanandani , Peng Fan , > Santosh Pallagatti > > > > > A new version of I-D, draft-ietf-bfd-stability-07.txt > has been successfully submitted by Santosh Pallagatti and posted to the > IETF repository. > > Name: draft-ietf-bfd-stability > Revision: 07 > Title: BFD Stability > Document date: 2021-01-14 > Group: bfd > Pages: 6 > URL: > https://www.ietf.org/archive/id/draft-ietf-bfd-stability-07.txt > Status: https://datatracker.ietf.org/doc/draft-ietf-bfd-stability= / > Htmlized: > https://datatracker.ietf.org/doc/html/draft-ietf-bfd-stability > Htmlized: https://tools.ietf.org/html/draft-ietf-bfd-stability-07 > Diff: > https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-stability-07 > > Abstract: > This document describes extensions to the Bidirectional Forwarding > Detection (BFD) protocol to measure BFD stability. Specifically, it > describes a mechanism for detection of BFD packet loss. > > > > > 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 > > --00000000000024cb9005bbe74938 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Reshad,
=C2=A0 =C2=A0Sure I will address these comm= ents too.

Thanks
Santosh P K=C2=A0
=

= On Sun, Jan 31, 2021 at 4:56 AM Reshad Rahman <reshad@yahoo.com> wrote:

Hi Santosh,

= =C2=A0

Thanks for making the changes and a= ddressing my comments.

=C2= =A0

Nits:

  1. Null was changed to NULL exc= ept in the header of section 4
  2. In section 4, it= =E2=80=99d be good to have informative references for CFM and OWAMP.=

=C2=A0

Regards,

Reshad.=

=C2=A0

From: Rtg-bfd <rtg-bfd-bounces@ietf.org> on behalf of Santosh P K <= santosh.p= allagatti@gmail.com>
Date: Thursday, January 14, 2021 at 8= :35 AM
To: rtg-bfd WG <rtg-bfd@ietf.org>
Subject: Fwd: New Version= Notification for draft-ietf-bfd-stability-07.txt

<= /div>

=C2=A0

I have refreshed stability=C2= =A0draft. Diff from the previous version is attached.=C2=A0

---------- Forwarded message ---------From: <i= nternet-drafts@ietf.org>
Date: Thu, Jan 14, 2021 at 3:28 PM
Su= bject: New Version Notification for draft-ietf-bfd-stability-07.txt
To: = Ankur Saxena <ankurpsaxena@gmail.com>, Ashesh Mishra <mishra.ashesh@gmail.com>, Mach= Chen <mach.ch= en@huawei.com>, Mahesh Jethanandani <mjethanandani@gmail.com>, Peng Fan = <fanp08@gmail.com<= /a>>, Santosh Pallagatti <santosh.pallagatti@gmail.com>




A n= ew version of I-D, draft-ietf-bfd-stability-07.txt
has been successfully= submitted by Santosh Pallagatti and posted to the
IETF repository.
<= br>Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-ietf-bfd-stabilityRevision:=C2=A0 =C2=A0 =C2=A0 =C2=A007
Title:=C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 BFD Stability
Document date:=C2=A0 2021-01-14
Group:=C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0 bfd
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 6
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 h= ttps://www.ietf.org/archive/id/draft-ietf-bfd-stability-07.txt
Statu= s:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0https://datatracker.ietf.= org/doc/draft-ietf-bfd-stability/
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2= =A0https://datatracker.ietf.org/doc/html/draft-ietf-bfd-s= tability
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0https://tool= s.ietf.org/html/draft-ietf-bfd-stability-07
Diff:=C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0https://www.ietf.org/rfcdiff?url= 2=3Ddraft-ietf-bfd-stability-07

Abstract:
=C2=A0 =C2=A0This d= ocument describes extensions to the Bidirectional Forwarding
=C2=A0 =C2= =A0Detection (BFD) protocol to measure BFD stability.=C2=A0 Specifically, i= t
=C2=A0 =C2=A0describes a mechanism for detection of BFD packet loss.



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

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([2601:647:5600:5020:7d6e:1c69:17df:2398]) by smtp.gmail.com with ESMTPSA id f28sm26040157pfk.182.2021.02.23.12.02.26 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Tue, 23 Feb 2021 12:02:27 -0800 (PST) From: Mahesh Jethanandani Content-Type: multipart/alternative; boundary="Apple-Mail=_65F67508-340F-4148-A899-368F70017ED9" Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.120.23.2.4\)) Subject: Re: Shephered writeup for draft-ietf-bfd-secure-sequence-numbers Message-Id: <1995CE5F-4996-4C2B-9BFE-B3DC56511CC0@gmail.com> Date: Tue, 23 Feb 2021 12:02:25 -0800 Cc: "rtg-bfd@ietf. org" , "draft-ietf-bfd-secure-sequence-numbers@ietf.org" , Martin Vigoureux To: Reshad Rehman , Jeffrey Haas X-Mailer: Apple Mail (2.3608.120.23.2.4) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 23 Feb 2021 20:03:21 -0000 --Apple-Mail=_65F67508-340F-4148-A899-368F70017ED9 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hi Reshad, I never really received this e-mail, till Sonal forwarded it to me. = Anyway, here are our responses to the comments you have provided. Please = see inline with [mj]. > Hi Sonal, authors, >=20 > =20 >=20 > Thanks for the document update. Main comments: >=20 > =20 >=20 > Hash has been replaced by symmetric algorithm, to be able to retrieve = the sequence number at the receiving side, this is good.=20 > Section 3 mentions that the symmetric key is provisioned securely on = sender and receiver, but there is no mention of provisioning of the = algorithm/function. Also there is no mention of what algorithms to use, = is this on purpose since what=E2=80=99s good today will not be = recommended tomorrow? Should we at least say =E2=80=9Cdo not use DES=E2=80= =9D or too obvious? [mj] I believe this is a question for the WG, and maybe something we can = bring up in the upcoming meeting, if it is not answered on the mailing = list. Would the WG prefer that a (set of) algorithms MUST be defined to = ensure interoperability, or is this something we should leave up to = implementors/operators to agree? We are concerned what we define today = might be obsoleted tomorrow. > Was there any discussions/thoughts on using asymmetric encryption = instead (I didn=E2=80=99t follow this document when it started)? It = avoids the pain of having a shared secret. I=E2=80=99m not saying we = should go with asymmetric, just wondering. [mj] We chose symmetric because that is what 5880 talks about. > For the key, the terms =E2=80=9Csymmetric key=E2=80=9D, =E2=80=9Cshared = secret key=E2=80=9D and =E2=80=9Cshared key=E2=80=9D are used, settle on = one for clarity (I believe it should be =E2=80=9Cshared key=E2=80=9D or = =E2=80=9Cshared secret=E2=80=9D?) [mj] Ok. How about =E2=80=9Cshared secret key=E2=80=9D? > For the algorithm, the terms =E2=80=9Csymmetric key algorithm=E2=80=9D, = =E2=80=9Csymmetric algorithm=E2=80=9D , =E2=80=9Csymmetric encryption = algorithm=E2=80=9D, =E2=80=9Csymmetric decryption algorithm=E2=80=9D are = used. Again, pick 1 =E2=80=9Csymmetric algorithm=E2=80=9D?). [mj] Ok. We will pick =E2=80=9Csymmetric algorithm=E2=80=9D. > The term =E2=80=9Chash=E2=80=9D is still used e.g. in section 4 header [mj] That is deliberate. We use =E2=80=9Chash=E2=80=9D when we refer to = the value that is calculated over the entire packet and appended as a = value at the end of the packet. That is different from ciphertext, which = is the value after applying the symmetric algorithm on the sequence = number and inserted in-lieu of the sequence number before the hash is = calculated. > Security is not my expertise. Should we get a security review asap, as = opposed to waiting for IESG review. Jeff/Martin? [mj] It would not be a bad idea, although we do have a security expert = as a co-author on the draft :-) > Diagram chains are clearer now. > Sequence number validity as described at the bottom of page 3 and on = P4 (at the end of section 3). RFC5880 sections 6.7.3 and 6.7.4 describe = that received sequence number should be between bfd.RcvAuthSeq(+1) to = bfd.RcvAuthSeq+(3*Detect Mult) inclusive. I don=E2=80=99t see why this = has to be changed for secure sequence numbers. [mj] We will just refer to 5880. > Jeff=E2=80=99s comment regarding =E2=80=9CThe first sequence number = can be obtained=E2=80=A6=E2=80=9D in section 3. I believe the text is = incorrect. RFC5880 sections 6.7.3 and 6.7.4 explain how the first = sequence number is obtained (using bfd.AuthSeqKnown and bfd.RcvAuthSeq). [mj] Ditto. > =20 >=20 > Nits: >=20 > =20 >=20 > Section 4: s/=E2=80=9Dwhile encryption/decryption=E2=80=9D/=E2=80=9Dwhil= e doing encryption/decryption=E2=80=9D/ >=20 [mj] Ok. > What does =E2=80=9Cnon linear=E2=80=9D mean in =E2=80=9Cmonotonically = increasing (but non linear) sequence number=E2=80=9D? [mj] A monotonically increasing number is just that, an increasing = number, but it does not have to be linear. See the diagram below. That = is why the mention of non-linear. > Section 7: s/Jeff Hass/Jeff Haas/ >=20 [mj] Will fix :-). Thanks > =20 >=20 > Regards, >=20 > Reshad. >=20 Mahesh Jethanandani mjethanandani@gmail.com --Apple-Mail=_65F67508-340F-4148-A899-368F70017ED9 Content-Type: multipart/related; type="text/html"; boundary="Apple-Mail=_36CDAD23-D832-40DC-A9F7-9D899F7C97C3" --Apple-Mail=_36CDAD23-D832-40DC-A9F7-9D899F7C97C3 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8
Hi Reshad,

I never really received this e-mail, till Sonal = forwarded it to me. Anyway, here are our responses to the comments you = have provided. Please see inline with [mj].

Hi Sonal, authors,

 

Thanks for the document = update. Main comments:

 

  1. Hash has been replaced by = symmetric algorithm, to be able to retrieve the sequence number at the = receiving side, this is good. 
    1. Section 3 = mentions that the symmetric key is provisioned securely on sender and = receiver, but there is no mention of provisioning of the = algorithm/function. Also there is no mention of what algorithms to use, = is this on purpose since what=E2=80=99s good today will not be = recommended tomorrow? Should we at least say =E2=80=9Cdo not use DES=E2=80= =9D or too obvious?
[mj] I = believe this is a question for the WG, and maybe something we can bring = up in the upcoming meeting, if it is not answered on the mailing list. = Would the WG prefer that a (set of) algorithms MUST be defined to ensure = interoperability, or is this something we should leave up to = implementors/operators to agree? We are concerned what we define today = might be obsoleted tomorrow.

    2. Was there any = discussions/thoughts on using asymmetric encryption instead (I didn=E2=80=99= t follow this document when it started)? It avoids the pain of having a = shared secret. I=E2=80=99m not saying we should go with asymmetric, just = wondering.
[mj] We chose = symmetric because that is what 5880 talks about.

    2. For the = key, the terms =E2=80=9Csymmetric key=E2=80=9D, =E2=80=9Cshared secret = key=E2=80=9D and =E2=80=9Cshared key=E2=80=9D are used, settle on one = for clarity (I believe it should be =E2=80=9Cshared key=E2=80=9D or = =E2=80=9Cshared secret=E2=80=9D?)
[mj] Ok. How about =E2=80=9Csha= red secret key=E2=80=9D?

    2. For the algorithm, the terms = =E2=80=9Csymmetric key algorithm=E2=80=9D, =E2=80=9Csymmetric = algorithm=E2=80=9D , =E2=80=9Csymmetric encryption algorithm=E2=80=9D, = =E2=80=9Csymmetric decryption algorithm=E2=80=9D are used. Again, pick 1 = =E2=80=9Csymmetric algorithm=E2=80=9D?).
[mj] Ok. We will pick = =E2=80=9Csymmetric algorithm=E2=80=9D.

    2. The term = =E2=80=9Chash=E2=80=9D is still used e.g. in section 4 header
[mj] That is deliberate. We = use =E2=80=9Chash=E2=80=9D when we refer to the value that is calculated = over the entire packet and appended as a value at the end of the packet. = That is different from ciphertext, which is the value after applying the = symmetric algorithm on the sequence number and inserted in-lieu of the = sequence number before the hash is calculated.

    2. Security = is not my expertise. Should we get a security review asap, as opposed to = waiting for IESG review. Jeff/Martin?
[mj] It would not be a bad = idea, although we do have a security expert as a co-author on the draft = :-)

  1. Diagram chains are clearer now.
  2. Sequence = number validity as described at the bottom of page 3 and on P4 (at the = end of section 3). RFC5880 sections 6.7.3 and 6.7.4 describe that = received sequence number should be between bfd.RcvAuthSeq(+1) = to bfd.RcvAuthSeq+(3*Detect Mult) inclusive. I don=E2=80=99t see = why this has to be changed for secure sequence numbers.
[mj] We will just refer to = 5880.

  2. Jeff=E2=80=99s comment regarding =E2=80=9CThe first sequence = number can be obtained=E2=80=A6=E2=80=9D in section 3. I believe the = text is incorrect. RFC5880 sections 6.7.3 and 6.7.4 explain how the = first sequence number is obtained (using bfd.AuthSeqKnown and = bfd.RcvAuthSeq).
[mj] Ditto.

 

Nits:

 

Section 4: s/=E2=80=9Dwhile = encryption/decryption=E2=80=9D/=E2=80=9Dwhile doing = encryption/decryption=E2=80=9D/

[mj] = Ok.

What does =E2=80=9Cnon linear=E2=80=9D mean in =
=E2=80=9Cmonotonically increasing (but non linear) sequence number=E2=80=9D=
?
[mj] A monotonically = increasing number is just that, an increasing number, but it does not = have to be linear. See the diagram below. That is why the mention of = non-linear.


Section 7: s/Jeff = Hass/Jeff Haas/

[mj] Will fix :-). = Thanks

 

Regards,

Reshad.

Mahesh Jethanandani



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X-Sonic-MF: Received: from sonic.gate.mail.ne1.yahoo.com by sonic303.consmr.mail.bf2.yahoo.com with HTTP; Wed, 24 Feb 2021 03:15:53 +0000 Received: by smtp402.mail.gq1.yahoo.com (VZM Hermes SMTP Server) with ESMTPA ID 5be6a9225135b7e9dc30eea3d9ba7e6e; Wed, 24 Feb 2021 03:15:51 +0000 (UTC) User-Agent: Microsoft-MacOutlook/16.44.20121301 Date: Tue, 23 Feb 2021 22:15:47 -0500 Subject: Re: Rtg-bfd Digest, Vol 178, Issue 5 From: Reshad Rahman To: Albert Fu , Message-ID: <18D0D533-4735-4EC9-A569-4C1960A1CF2B@yahoo.com> Thread-Topic: Rtg-bfd Digest, Vol 178, Issue 5 References: <6016FF99010E05DC00390001_0_4903@msllnjpmsgsv06> In-Reply-To: <6016FF99010E05DC00390001_0_4903@msllnjpmsgsv06> Mime-version: 1.0 Content-type: multipart/alternative; boundary="B_3696963351_1689348378" X-Mailer: WebService/1.1.17712 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Apache-HttpAsyncClient/4.1.4 (Java/11.0.9.1) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Feb 2021 03:15:57 -0000 > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3696963351_1689348378 Content-type: text/plain; charset="UTF-8" Content-transfer-encoding: quoted-printable Hi Albert, =20 Apologies for the delay in replying. =20 I believe (no hat) that there is value in adding counters to expose drop-re= lated info. We should look into augmenting the BFD YANG model, not sure whet= her we should add that in the stability draft=E2=80=A6 I would like to hear from t= he WG. =20 Regards, Reshad.=20 =20 From: Rtg-bfd on behalf of "Albert Fu (BLOOMBERG= / 120 PARK)" Reply-To: Albert Fu Date: Sunday, January 31, 2021 at 2:06 PM To: Subject: Re:Rtg-bfd Digest, Vol 178, Issue 5 =20 Hi, 1. Re: New Version Notification for draft-ietf-bfd-stability-07.txt (Reshad Rahman) This feature is good to have. As a matter of fact, we have been trying to g= et vendors to expose BFD counters as we know links from carriers do drop pac= kets without any indication of errors, and the basic send/receive counters a= re not reliable indicators, since the timers are randomized up to 25% lower. =20 The draft talks about geneation of diagnostic info but no details. I would = think syslog is not practical for large network. What do you think about men= tioning keeping counters of missing seq numbers, and have these counters exp= osed to telemetry/snmp? This would be very useful to us. =20 Thanks =20 Albert --B_3696963351_1689348378 Content-type: text/html; charset="UTF-8" Content-transfer-encoding: quoted-printable

Hi Albert,

 

Apolo= gies for the delay in replying.

 =

I believe (no hat) that there is value in addin= g counters to expose drop-related info. We should look into augmenting the B= FD YANG model, not sure whether we should add that in the stability draft=E2=80=A6= I would like to hear from the WG.

&nb= sp;

Regards,

Re= shad.

 

From: Rtg-bfd <rtg-bfd-bounces@ietf.org= > on behalf of "Albert Fu (BLOOMBERG/ 120 PARK)" <afu14@bloo= mberg.net>
Reply-To: Albert Fu <afu14@bloomberg.net>
<= b>Date: Sunday, January 31, 2021 at 2:06 PM
To: <rtg-bfd@ie= tf.org>
Subject: Re:Rtg-bfd Digest, Vol 178, Issue 5=

 

Hi,<= /p>

1. Re: New Version Notification for
draft-ietf-bfd-stability-07.txt (Res= had Rahman)

This feature is good to have. As a matter of fact, we hav= e been trying to get vendors to expose BFD counters as we know links from ca= rriers do drop packets without any indication of errors, and the basic send/= receive counters are not reliable indicators, since the timers are randomize= d up to 25% lower.

 

<= blockquote style=3D'margin-top:5.0pt;margin-bottom:5.0pt'>

<= span style=3D'font-size:12.0pt;font-family:"Courier New"'>The draft talks abou= t geneation of diagnostic info but no details. I would think syslog is not p= ractical for large network. What do you think about mentioning keeping count= ers of missing seq numbers, and have these counters exposed to telemetry/snm= p? This would be very useful to us.

 <= /p>

Tha= nks

 

Albert

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Wed, 24 Feb 2021 03:29:00 +0000 Received: by smtp404.mail.ne1.yahoo.com (VZM Hermes SMTP Server) with ESMTPA ID 54a603a7e29b38b3b414db03cfb1ea5f; Wed, 24 Feb 2021 03:28:54 +0000 (UTC) User-Agent: Microsoft-MacOutlook/16.44.20121301 Date: Tue, 23 Feb 2021 22:28:52 -0500 Subject: Re: Shephered writeup for draft-ietf-bfd-secure-sequence-numbers From: Reshad Rahman To: Mahesh Jethanandani , Jeffrey Haas CC: "rtg-bfd@ietf. org" , "draft-ietf-bfd-secure-sequence-numbers@ietf.org" Message-ID: Thread-Topic: Shephered writeup for draft-ietf-bfd-secure-sequence-numbers References: <1995CE5F-4996-4C2B-9BFE-B3DC56511CC0@gmail.com> In-Reply-To: <1995CE5F-4996-4C2B-9BFE-B3DC56511CC0@gmail.com> Mime-version: 1.0 Content-type: multipart/mixed; boundary="B_3696964134_1269764325" X-Mailer: WebService/1.1.17712 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Apache-HttpAsyncClient/4.1.4 (Java/11.0.9.1) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Feb 2021 03:29:04 -0000 > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3696964134_1269764325 Content-type: multipart/related; boundary="B_3696964134_1344844780" --B_3696964134_1344844780 Content-type: multipart/alternative; boundary="B_3696964134_2137151308" --B_3696964134_2137151308 Content-type: text/plain; charset="UTF-8" Content-transfer-encoding: quoted-printable Hi Mahesh, =20 Thanks for the response.=20 =20 Would it be possible to have an updated document when the gates reopen? =C2=A0P= lease see inline. =20 From: Rtg-bfd on behalf of Mahesh Jethanandani <= mjethanandani@gmail.com> Date: Tuesday, February 23, 2021 at 3:03 PM To: Reshad Rahman , Jeffrey Haas Cc: "rtg-bfd@ietf. org" , "draft-ietf-bfd-secure-sequence= -numbers@ietf.org" Subject: Re: Shephered writeup for draft-ietf-bfd-secure-sequence-numbers =20 Hi Reshad, =20 I never really received this e-mail, till Sonal forwarded it to me.=20 You have to remove my name from the spam sender list =F0=9F=98=8A =20 Anyway, here are our responses to the comments you have provided. Please se= e inline with [mj]. =20 Hi Sonal, authors, =20 Thanks for the document update. Main comments: =20 Hash has been replaced by symmetric algorithm, to be able to retrieve the s= equence number at the receiving side, this is good.=20 Section 3 mentions that the symmetric key is provisioned securely on sender= and receiver, but there is no mention of provisioning of the algorithm/func= tion. Also there is no mention of what algorithms to use, is this on purpose= since what=E2=80=99s good today will not be recommended tomorrow? Should we at le= ast say =E2=80=9Cdo not use DES=E2=80=9D or too obvious? [mj] I believe this is a question for the WG, and maybe something we can br= ing up in the upcoming meeting, if it is not answered on the mailing list. W= ould the WG prefer that a (set of) algorithms MUST be defined to ensure inte= roperability, or is this something we should leave up to implementors/operat= ors to agree? We are concerned what we define today might be obsoleted tomor= row. it would be good to have an update on this document at the upcoming me= eting. Having a MUST set of algorithms has the drawback you mentioned. Letti= ng implementors/operators agree is fine but I think we still need a suggeste= d list (as of 2021) for interop. And I believe we need some text in the docu= ment wrt provisioning the algorithm. =20 Was there any discussions/thoughts on using asymmetric encryption instead (= I didn=E2=80=99t follow this document when it started)? It avoids the pain of havi= ng a shared secret. I=E2=80=99m not saying we should go with asymmetric, just wond= ering. [mj] We chose symmetric because that is what 5880 talks about. Good with me. I=E2=80=99ll defer to security experts. =20 For the key, the terms =E2=80=9Csymmetric key=E2=80=9D, =E2=80=9Cshared secret key=E2=80=9D and =E2=80=9C= shared key=E2=80=9D are used, settle on one for clarity (I believe it should be =E2=80= =9Cshared key=E2=80=9D or =E2=80=9Cshared secret=E2=80=9D?) [mj] Ok. How about =E2=80=9Cshared secret key=E2=80=9D? Good. =20 For the algorithm, the terms =E2=80=9Csymmetric key algorithm=E2=80=9D, =E2=80=9Csymmetric al= gorithm=E2=80=9D , =E2=80=9Csymmetric encryption algorithm=E2=80=9D, =E2=80=9Csymmetric decryption a= lgorithm=E2=80=9D are used. Again, pick 1 =E2=80=9Csymmetric algorithm=E2=80=9D?). [mj] Ok. We will pick =E2=80=9Csymmetric algorithm=E2=80=9D. Good. =20 The term =E2=80=9Chash=E2=80=9D is still used e.g. in section 4 header [mj] That is deliberate. We use =E2=80=9Chash=E2=80=9D when we refer to the value that = is calculated over the entire packet and appended as a value at the end of t= he packet. That is different from ciphertext, which is the value after apply= ing the symmetric algorithm on the sequence number and inserted in-lieu of t= he sequence number before the hash is calculated. Section 4 header still uses the term =E2=80=9Chash=E2=80=9D but the text in that s= ection has been changed to =E2=80=9Ccyphertext=E2=80=9D, I believe this is an oversight. =20 Security is not my expertise. Should we get a security review asap, as oppo= sed to waiting for IESG review. Jeff/Martin? [mj] It would not be a bad idea, although we do have a security expert as a= co-author on the draft :-) It would seem you=E2=80=99re covered then.=20 =20 Diagram chains are clearer now. Sequence number validity as described at the bottom of page 3 and on P4 (at= the end of section 3). RFC5880 sections 6.7.3 and 6.7.4 describe that recei= ved sequence number should be between bfd.RcvAuthSeq(+1) to bfd.RcvAuthSeq+(= 3*Detect Mult) inclusive. I don=E2=80=99t see why this has to be changed for secur= e sequence numbers. [mj] We will just refer to 5880. Good. =20 Jeff=E2=80=99s comment regarding =E2=80=9CThe first sequence number can be obtained=E2=80=A6=E2= =80=9D in section 3. I believe the text is incorrect. RFC5880 sections 6.7.3 and= 6.7.4 explain how the first sequence number is obtained (using bfd.AuthSeqK= nown and bfd.RcvAuthSeq). [mj] Ditto. Good. =20 Regards, Reshad. =20 =20 Nits: =20 Section 4: s/=E2=80=9Dwhile encryption/decryption=E2=80=9D/=E2=80=9Dwhile doing encryption/de= cryption=E2=80=9D/ [mj] Ok. What does =E2=80=9Cnon linear=E2=80=9D mean in =E2=80=9Cmonotonically increasing (but non lin= ear) sequence number=E2=80=9D? [mj] A monotonically increasing number is just that, an increasing number, = but it does not have to be linear. See the diagram below. That is why the me= ntion of non-linear. =20 Section 7: s/Jeff Hass/Jeff Haas/ [mj] Will fix :-). Thanks =20 Regards, Reshad. Mahesh Jethanandani mjethanandani@gmail.com =20 =20 =20 =20 --B_3696964134_2137151308 Content-type: text/html; charset="UTF-8" Content-transfer-encoding: quoted-printable

Hi Mahesh,

 

Thanks for the response.

&n= bsp;

Would it be possible to have an updated doc= ument when the gates reopen? =C2=A0Please see inline.

 

From: Rtg-bfd <rtg-bfd-bounces@ietf.org> on behalf of Mahesh Jethanan= dani <mjethanandani@gmail.com>
Date: Tuesday, February 23, 2= 021 at 3:03 PM
To: Reshad Rahman <reshad@yahoo.com>, Jeffrey= Haas <jhaas@pfrc.org>
Cc: "rtg-bfd@ietf. org" <= ;rtg-bfd@ietf.org>, "draft-ietf-bfd-secure-sequence-numbers@ietf.org= " <draft-ietf-bfd-secure-sequence-numbers@ietf.org>
Subject= : Re: Shephered writeup for draft-ietf-bfd-secure-sequence-numbers<= /o:p>

 

Hi Reshad,

 

I never really recei= ved this e-mail, till Sonal forwarded it to me.

<RR> You have to remove my name from the spam sender list 😊

 

Anyway, here are our r= esponses to the comments you have provided. Please see inline with [mj].

 

Hi Sonal, authors,

 

Thanks for the document update. Main commen= ts:

 

  1. Hash has been replaced by symmetric algorithm, to be able to retr= ieve the sequence number at the receiving side, this is good. 
    1. Section 3 mentions that the symmetric key is provisioned securely on sender= and receiver, but there is no mention of provisioning of the algorithm/func= tion. Also there is no mention of what algorithms to use, is this on purpose= since what=E2=80=99s good today will not be recommended tomorrow? Should we at le= ast say =E2=80=9Cdo not use DES=E2=80=9D or too obvious?

[mj] I believe this is a question for the WG, and = maybe something we can bring up in the upcoming meeting, if it is not answer= ed on the mailing list. Would the WG prefer that a (set of) algorithms MUST = be defined to ensure interoperability, or is this something we should leave = up to implementors/operators to agree? We are concerned what we define today= might be obsoleted tomorrow.

&l= t;RR> it would be good to have an update on this document at the upcoming= meeting. Having a MUST set of algorithms has the drawback you mentioned. Le= tting implementors/operators agree is fine but I think we still need a sugge= sted list (as of 2021) for interop. And I believe we need some text in the d= ocument wrt provisioning the algorithm.

    1.  
    2. Was there any discussions/thoughts on using asymmetric encryption inste= ad (I didn=E2=80=99t follow this document when it started)? It avoids the pain of = having a shared secret. I=E2=80=99m not saying we should go with asymmetric, just = wondering.

[mj] We = chose symmetric because that is what 5880 talks about.

<RR> Good with me. I=E2=80=99ll defer to security experts.<= /o:p>



    1.  
    2. For the key, the terms =E2=80=9Csymmetric key=E2=80=9D, =E2=80=9Cshared secret key=E2=80=9D and= =E2=80=9Cshared key=E2=80=9D are used, settle on one for clarity (I believe it should b= e =E2=80=9Cshared key=E2=80=9D or =E2=80=9Cshared secret=E2=80=9D?)

[mj] Ok. How about =E2=80=9Cshared secret key=E2=80=9D?

<RR> Good.



    1.  
    2. For the algorithm, the = terms =E2=80=9Csymmetric key algorithm=E2=80=9D, =E2=80=9Csymmetric algorithm=E2=80=9D , =E2=80=9Csymmetri= c encryption algorithm=E2=80=9D, =E2=80=9Csymmetric decryption algorithm=E2=80=9D are used. Ag= ain, pick 1 =E2=80=9Csymmetric algorithm=E2=80=9D?).

[mj] Ok. We will pick =E2=80=9Csymmetric algorithm=E2=80=9D.<= /o:p>

<RR> Good.

    1.  
    2. The term =E2=80=9Chash=E2=80=9D is still used e.g. in section 4 hea= der

[mj] That is de= liberate. We use =E2=80=9Chash=E2=80=9D when we refer to the value that is calculated ov= er the entire packet and appended as a value at the end of the packet. That = is different from ciphertext, which is the value after applying the symmetri= c algorithm on the sequence number and inserted in-lieu of the sequence numb= er before the hash is calculated.

<RR> Section 4 header still uses the term =E2=80=9Chash=E2=80=9D but the text in= that section has been changed to =E2=80=9Ccyphertext=E2=80=9D, I believe this is an ove= rsight.

    1. =  
    2. Security is not my expertis= e. Should we get a security review asap, as opposed to waiting for IESG revi= ew. Jeff/Martin?

[m= j] It would not be a bad idea, although we do have a security expert as a co= -author on the draft :-)

<RR> It woul= d seem you=E2=80=99re covered then.

<= br>

    1. &nb= sp;
  1. Diagra= m chains are clearer now.
  2. Sequence= number validity as described at the bottom of page 3 and on P4 (at the end = of section 3). RFC5880 sections 6.7.3 and 6.7.4 describe that received seque= nce number should be between bfd.RcvAuthSeq(+1) to bfd.RcvAuthSeq+= (3*Detect Mult) inclusive. I don=E2=80=99t see why this has to be changed for secu= re sequence numbers.

[mj= ] We will just refer to 5880.

<RR> Go= od.



  1.  
  2. Jeff=E2= =80=99s comment regarding =E2=80=9CThe first sequence number can be obtained=E2=80=A6=E2=80=9D in = section 3. I believe the text is incorrect. RFC5880 sections 6.7.3 and 6.7.4= explain how the first sequence number is obtained (using bfd.AuthSeqKnown a= nd bfd.RcvAuthSeq).

[mj]= Ditto.

<RR> Good.

 

Regards,

Reshad.

  1.  

 

Nits:<= /o:p>

 

Section 4: s/=E2=80=9Dwhile encryption/decryptio= n=E2=80=9D/=E2=80=9Dwhile doing encryption/decryption=E2=80=9D/

[mj] Ok.

What does =E2=80=9Cnon linear=E2=80=9D mean in =E2=80=9Cmonotonically inc=
reasing (but non linear) sequence number=E2=80=9D?

[mj] A monotonically increasing number is just that,= an increasing number, but it does not have to be linear. See the diagram be= low. That is why the mention of non-linear.

 



Secti= on 7: s/Jeff Hass/Jeff Haas/

[= mj] Will fix :-). Thanks

 

Regards,

=

Reshad.

Mahesh Jethanan= dani

&n= bsp;

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qqjxZiFE+i71YMyOJ+0sPqtrsFw2PyY+ibzPqusSbJEL00s1U/I7wBOzUonFYNjd5h/imwITEg0e3sTYKxT/og== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB6PR0701MB2888 Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Feb 2021 10:42:28 -0000 --_002_DB7PR07MB5546592E043B8B39069A19FDA29F9DB7PR07MB5546eurp_ Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable From: Rtg-bfd on behalf of Mahesh Jethanandani <= mjethanandani@gmail.com>=0A= Sent: 23 February 2021 20:02=0A= =0A= Top posting because I am obliged to use the web to view this and the result= is an unusable mess:-(=0A= =0A= Two thoughts.=0A= =0A= Several WG have tried to set up registries of suitable security algorithms = and have failed dismally (the recent Last Call review of NTP yang shows som= e of the problems). The TLS WG is probably the least unsuccessful in this = regard but I do not see their work as having wider application.=0A= =0A= Monotonic is a word I learnt and understood at university until I came to t= he IETF when I found that American mathematics and European mathematics dif= fer. I see the IETF using the American meaning which always grates with me= .=0A= =0A= Tom Petch=0A= =0A= Hi Reshad,=0A= =0A= I never really received this e-mail, till Sonal forwarded it to me. Anyway,= here are our responses to the comments you have provided. Please see inlin= e with [mj].=0A= =0A= Hi Sonal, authors,=0A= =0A= Thanks for the document update. Main comments:=0A= =0A= =0A= 1. Hash has been replaced by symmetric algorithm, to be able to retrieve= the sequence number at the receiving side, this is good.=0A= * Section 3 mentions that the symmetric key is provisioned securely = on sender and receiver, but there is no mention of provisioning of the algo= rithm/function. Also there is no mention of what algorithms to use, is this= on purpose since what=92s good today will not be recommended tomorrow? Sho= uld we at least say =93do not use DES=94 or too obvious?=0A= =0A= [mj] I believe this is a question for the WG, and maybe something we can br= ing up in the upcoming meeting, if it is not answered on the mailing list. = Would the WG prefer that a (set of) algorithms MUST be defined to ensure in= teroperability, or is this something we should leave up to implementors/ope= rators to agree? We are concerned what we define today might be obsoleted t= omorrow.=0A= =0A= =0A= *=0A= * Was there any discussions/thoughts on using asymmetric encryption = instead (I didn=92t follow this document when it started)? It avoids the pa= in of having a shared secret. I=92m not saying we should go with asymmetric= , just wondering.=0A= =0A= [mj] We chose symmetric because that is what 5880 talks about.=0A= =0A= =0A= *=0A= * For the key, the terms =93symmetric key=94, =93shared secret key= =94 and =93shared key=94 are used, settle on one for clarity (I believe it = should be =93shared key=94 or =93shared secret=94?)=0A= =0A= [mj] Ok. How about =93shared secret key=94?=0A= =0A= =0A= *=0A= * For the algorithm, the terms =93symmetric key algorithm=94, =93sym= metric algorithm=94 , =93symmetric encryption algorithm=94, =93symmetric de= cryption algorithm=94 are used. Again, pick 1 =93symmetric algorithm=94?).= =0A= =0A= [mj] Ok. We will pick =93symmetric algorithm=94.=0A= =0A= =0A= *=0A= * The term =93hash=94 is still used e.g. in section 4 header=0A= =0A= [mj] That is deliberate. We use =93hash=94 when we refer to the value that = is calculated over the entire packet and appended as a value at the end of = the packet. That is different from ciphertext, which is the value after app= lying the symmetric algorithm on the sequence number and inserted in-lieu o= f the sequence number before the hash is calculated.=0A= =0A= =0A= *=0A= * Security is not my expertise. Should we get a security review asap= , as opposed to waiting for IESG review. Jeff/Martin?=0A= =0A= [mj] It would not be a bad idea, although we do have a security expert as a= co-author on the draft :-)=0A= =0A= =0A= *=0A= 1. Diagram chains are clearer now.=0A= 2. Sequence number validity as described at the bottom of page 3 and on = P4 (at the end of section 3). RFC5880 sections 6.7.3 and 6.7.4 describe tha= t received sequence number should be between bfd.RcvAuthSeq(+1) to bfd.RcvA= uthSeq+(3*Detect Mult) inclusive. I don=92t see why this has to be changed = for secure sequence numbers.=0A= =0A= [mj] We will just refer to 5880.=0A= =0A= =0A= 1.=0A= 2. Jeff=92s comment regarding =93The first sequence number can be obtain= ed=85=94 in section 3. I believe the text is incorrect. RFC5880 sections 6.= 7.3 and 6.7.4 explain how the first sequence number is obtained (using bfd.= AuthSeqKnown and bfd.RcvAuthSeq).=0A= =0A= [mj] Ditto.=0A= =0A= =0A= 1.=0A= =0A= Nits:=0A= =0A= Section 4: s/=94while encryption/decryption=94/=94while doing encryption/de= cryption=94/=0A= [mj] Ok.=0A= =0A= What does =93non linear=94 mean in =93monotonically increasing (but non lin= ear) sequence number=94?=0A= =0A= [mj] A monotonically increasing number is just that, an increasing number, = but it does not have to be linear. See the diagram below. That is why the m= ention of non-linear.=0A= =0A= [cid:7B4395E2-5D1F-4619-9AAB-30E5D8E25183]=0A= Section 7: s/Jeff Hass/Jeff Haas/=0A= [mj] Will fix :-). Thanks=0A= =0A= Regards,=0A= Reshad.=0A= Mahesh Jethanandani=0A= mjethanandani@gmail.com=0A= =0A= =0A= =0A= =0A= =0A= --_002_DB7PR07MB5546592E043B8B39069A19FDA29F9DB7PR07MB5546eurp_ Content-Type: image/png; name="220px-Monotonicity_example1.png" Content-Description: 220px-Monotonicity_example1.png Content-Disposition: attachment; filename="220px-Monotonicity_example1.png"; size=4815; creation-date="Tue, 23 Feb 2021 20:03:49 GMT"; modification-date="Tue, 23 Feb 2021 20:03:49 GMT" Content-ID: <7B4395E2-5D1F-4619-9AAB-30E5D8E25183> Content-Transfer-Encoding: base64 iVBORw0KGgoAAAANSUhEUgAAANwAAADUCAYAAAD3CU3sAAAABmJLR0QA/wD/AP+gvaeTAAAACXBI WXMAAABIAAAASABGyWs+AAAACXZwQWcAAADcAAAA1ACVemFGAAAQl0lEQVR42u3deZSddX3H8ddM NgKETZZUkMWIIigiKiAVxVar1C0iiAta7RGX09ZqrUurHvXYWq1Wj3o8VVGwi0utK1gQEReEigJW YwEBoQG3yA6BBEJmfv3j9xtzGWYyM8nzhGTyeZ/znPvM89z73Jvn3ne+v/X7Y8PYAa/AdkIIvXMA LsYjcitCmD7DG/i6P2iyHZ5bGEK/7IjvoOAsbJ9bEkJ/HIM7mnC34Q9zS0Lor0j5+9i27S/C43Ib 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([2601:647:5600:5020:7d6e:1c69:17df:2398]) by smtp.gmail.com with ESMTPSA id z8sm789003pjd.0.2021.02.24.09.26.01 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 24 Feb 2021 09:26:02 -0800 (PST) From: Mahesh Jethanandani Message-Id: Content-Type: multipart/alternative; boundary="Apple-Mail=_0DE349F3-502B-4EB0-8E34-8774D24C8BD9" Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.120.23.2.4\)) Subject: Re: Shephered writeup for draft-ietf-bfd-secure-sequence-numbers Date: Wed, 24 Feb 2021 09:26:00 -0800 In-Reply-To: Cc: Jeffrey Haas , "rtg-bfd@ietf. org" , "draft-ietf-bfd-secure-sequence-numbers@ietf.org" To: Reshad Rehman References: <1995CE5F-4996-4C2B-9BFE-B3DC56511CC0@gmail.com> X-Mailer: Apple Mail (2.3608.120.23.2.4) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Feb 2021 17:26:11 -0000 --Apple-Mail=_0DE349F3-502B-4EB0-8E34-8774D24C8BD9 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Hi Reshad, > On Feb 23, 2021, at 7:28 PM, Reshad Rahman wrote: >=20 > Would it be possible to have an updated document when the gates = reopen? Yes, we will work on posting an updated draft once data tracker opens up = on March 8. Thanks. Mahesh Jethanandani mjethanandani@gmail.com --Apple-Mail=_0DE349F3-502B-4EB0-8E34-8774D24C8BD9 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii Hi = Reshad,

On Feb 23, 2021, at 7:28 PM, Reshad Rahman = <reshad@yahoo.com> wrote:

Would it be = possible to have an updated document when the gates = reopen?

Yes, we will = work on posting an updated draft once data tracker opens up on March = 8.

Thanks.

Mahesh Jethanandani
mjethanandani@gmail.com





= --Apple-Mail=_0DE349F3-502B-4EB0-8E34-8774D24C8BD9-- From nobody Wed Feb 24 12:13:20 2021 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id EF48B3A0FD1 for ; Sat, 13 Feb 2021 13:51:01 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.92 X-Spam-Level: X-Spam-Status: No, score=-1.92 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] 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 KA6g5b0kmHGX for ; Sat, 13 Feb 2021 13:50:59 -0800 (PST) Received: from rfc-editor.org (rfc-editor.org [4.31.198.49]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C51C53A0FCD for ; Sat, 13 Feb 2021 13:50:59 -0800 (PST) Received: by rfc-editor.org (Postfix, from userid 30) id 845CCF40766; Sat, 13 Feb 2021 13:50:26 -0800 (PST) To: santosh.pallagatti@gmail.com, gregimirsky@gmail.com, sudarsan.225@gmail.com, venggovi@cisco.com, mmudigon@cisco.com, db3546@att.com, aretana.ietf@gmail.com, martin.vigoureux@nokia.com, jhaas@pfrc.org, reshad@yahoo.com Subject: [Technical Errata Reported] RFC8971 (6427) X-PHP-Originating-Script: 1005:errata_mail_lib.php From: RFC Errata System Cc: d3e3e3@gmail.com, rtg-bfd@ietf.org, rfc-editor@rfc-editor.org Content-Type: text/plain; charset=UTF-8 Message-Id: <20210213215026.845CCF40766@rfc-editor.org> Date: Sat, 13 Feb 2021 13:50:26 -0800 (PST) Archived-At: X-Mailman-Approved-At: Wed, 24 Feb 2021 12:13:18 -0800 X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 13 Feb 2021 21:51:02 -0000 The following errata report has been submitted for RFC8971, "Bidirectional Forwarding Detection (BFD) for Virtual eXtensible Local Area Network (VXLAN)". -------------------------------------- You may review the report below and at: https://www.rfc-editor.org/errata/eid6427 -------------------------------------- Type: Technical Reported by: Donald E. Eastlake, III Section: GLOBAL Original Text ------------- 00-52-02 Corrected Text -------------- 00-00-0E-00-52-02 Notes ----- This is a 48-bit unicast MAC address. It starts with the IANA OUI ("00-00-0E"). There are two instances that should be corrected if this document is revised or replaced. But I don't think this fix is worth re-issuing the document. If someone one looks this up in the IANA assignment table, it says there that the unicast numbers all actually start with 00-00-0E. Instructions: ------------- This erratum is currently posted as "Reported". If necessary, please use "Reply All" to discuss whether it should be verified or rejected. When a decision is reached, the verifying party can log in to change the status and edit the report, if necessary. -------------------------------------- RFC8971 (draft-ietf-bfd-vxlan-16) -------------------------------------- Title : Bidirectional Forwarding Detection (BFD) for Virtual eXtensible Local Area Network (VXLAN) Publication Date : December 2020 Author(s) : S. Pallagatti, Ed., G. Mirsky, Ed., S. Paragiri, V. Govindan, M. Mudigonda Category : INFORMATIONAL Source : Bidirectional Forwarding Detection Area : Routing Stream : IETF Verifying Party : IESG From nobody Wed Feb 24 19:54:39 2021 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 45D5B3A0EF4 for ; Wed, 24 Feb 2021 19:54:37 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.097 X-Spam-Level: X-Spam-Status: No, score=-2.097 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=unavailable 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 dKZ-3rgnScbE for ; Wed, 24 Feb 2021 19:54:34 -0800 (PST) Received: from mail-pg1-x52e.google.com (mail-pg1-x52e.google.com [IPv6:2607:f8b0:4864:20::52e]) (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 BDAD33A0EEF for ; Wed, 24 Feb 2021 19:54:34 -0800 (PST) Received: by mail-pg1-x52e.google.com with SMTP id l2so2934185pgb.1 for ; Wed, 24 Feb 2021 19:54:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:message-id:mime-version:subject:date:in-reply-to:cc:to :references; bh=mdESLPl52+UidY0hiWBTzlYp7J3pVQREyp0CCiZf8uM=; b=ED2s5jYNHIv9rN7vj1/n5Y6un1SeWuV1BZcfsswK26cb3ONIkiWCDhOsUxSy3tfZht QbQRC2HtxcTNz0FK4C9u+ijDf5jHJdd314+aUBn+sOQR6A9KGEZVDZeHZRXpJaqRL9Td MaLzopBTujxGI0ooppAc5eM74YDYJsyk0fxoy0ym40ehDBQx3ONmGiqI+n7Zjq9QYX4g KBxCv6pjmQsQiBTo0tPn/LizL4W2fU/es/SQ0Zk787lILobi16Gf4GXbGb1ChHq8eML/ wnWoAChoajsLIUJ3Ki6gMaTRtZR/cgs20qa2kmEmbnQgoF6dcgju41n2EAQn4y1Uac/d vKyQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:message-id:mime-version:subject:date :in-reply-to:cc:to:references; bh=mdESLPl52+UidY0hiWBTzlYp7J3pVQREyp0CCiZf8uM=; b=QFoXu1ucVspSAAOki+4i+sj1SKH4tCHV8KJwHPUp7Ugn50EpoA36xJlqBCfWvkSsev VwbO8oEvHPQ+kdUvaVdAKGW2reXR8iDIKSPQPCu/bTfvXqHlx6xN2jeCkbavrMUUCqKS YqrQGuZswd13qrxH+XcXqSTbXBxZa3he0I8Czm2S5kgwWtghBH4EjdnEYKDmYQbKqX/8 QmBvxwHORKgH4PU9DSgoq8W3Bw37BPRwVkVW32cn8OuGcVmfgK/nV2gkSC+5zsAu0FhB 43M4ODNGaHX0/NasZnwckcxn1xSiZtw92kMGfKb2f5yXOlRAiGqifv3riMcstA71NDLh ymUQ== X-Gm-Message-State: AOAM530lW3XpHIf8GO3EcfzcyD8RTqXhu67ocCKje5E+Vfjwy4m8etK6 2TrbYMGbO/hytQ8me+jsTsU= X-Google-Smtp-Source: ABdhPJx2x8ilrOHTEpZqkZ5d8iZDnt9VE/e0pE7jO0DXRUVB2cZ8cfG6nlYqn8Mt4nP9NmEh7YGW7g== X-Received: by 2002:aa7:9488:0:b029:1ee:16f0:5246 with SMTP id z8-20020aa794880000b02901ee16f05246mr1065988pfk.14.1614225274160; Wed, 24 Feb 2021 19:54:34 -0800 (PST) Received: from ?IPv6:2601:647:5600:5020:b0d8:8e1:aa8d:ddb2? ([2601:647:5600:5020:b0d8:8e1:aa8d:ddb2]) by smtp.gmail.com with ESMTPSA id 14sm4306243pfy.55.2021.02.24.19.54.32 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 24 Feb 2021 19:54:33 -0800 (PST) From: Mahesh Jethanandani Message-Id: <1A8F1E82-4F2F-42F8-BD4B-5CF5E7027AAA@gmail.com> Content-Type: multipart/alternative; boundary="Apple-Mail=_4169E8C8-28B8-4705-9627-7A2741322A39" Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.120.23.2.4\)) Subject: Re: Rtg-bfd Digest, Vol 178, Issue 5 Date: Wed, 24 Feb 2021 19:54:32 -0800 In-Reply-To: <18D0D533-4735-4EC9-A569-4C1960A1CF2B@yahoo.com> Cc: Albert Fu , "rtg-bfd@ietf. org" To: Reshad Rahman References: <6016FF99010E05DC00390001_0_4903@msllnjpmsgsv06> <18D0D533-4735-4EC9-A569-4C1960A1CF2B@yahoo.com> X-Mailer: Apple Mail (2.3608.120.23.2.4) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 25 Feb 2021 03:54:37 -0000 --Apple-Mail=_4169E8C8-28B8-4705-9627-7A2741322A39 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hi Reshad, > On Feb 23, 2021, at 7:15 PM, Reshad Rahman = wrote: >=20 > Hi Albert, > =20 > Apologies for the delay in replying. > =20 > I believe (no hat) that there is value in adding counters to expose = drop-related info. We should look into augmenting the BFD YANG model, = not sure whether we should add that in the stability draft=E2=80=A6 I = would like to hear from the WG. +1 Done. However, the document now needs a YANG Doctor review. Do you think = you can take a quick review of it? > =20 > Regards, > Reshad.=20 > =20 > From: Rtg-bfd on behalf of "Albert Fu = (BLOOMBERG/ 120 PARK)" > Reply-To: Albert Fu > Date: Sunday, January 31, 2021 at 2:06 PM > To: > Subject: Re:Rtg-bfd Digest, Vol 178, Issue 5 > =20 >> Hi, >>=20 >> 1. Re: New Version Notification for >> draft-ietf-bfd-stability-07.txt (Reshad Rahman) >>=20 >> This feature is good to have. As a matter of fact, we have been = trying to get vendors to expose BFD counters as we know links from = carriers do drop packets without any indication of errors, and the basic = send/receive counters are not reliable indicators, since the timers are = randomized up to 25% lower. >> =20 >> The draft talks about geneation of diagnostic info but no details. I = would think syslog is not practical for large network. What do you think = about mentioning keeping counters of missing seq numbers, and have these = counters exposed to telemetry/snmp? This would be very useful to us. >> =20 >> Thanks >> =20 >> Albert Mahesh Jethanandani mjethanandani@gmail.com --Apple-Mail=_4169E8C8-28B8-4705-9627-7A2741322A39 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8
Hi Reshad,

On Feb 23, 2021, at 7:15 PM, = Reshad Rahman <reshad=3D40yahoo.com@dmarc.ietf.org> wrote:

Hi Albert,
 
Apologies for the delay in = replying.
 
I believe (no hat) that = there is value in adding counters to expose drop-related info. We should = look into augmenting the BFD YANG model, not sure whether we should add = that in the stability draft=E2=80=A6 I would like to hear from the = WG.

+1

Done. However, = the document now needs a YANG Doctor review. Do you think you can take a = quick review of it?


 
Regards,
Reshad. 
 
From: Rtg-bfd <rtg-bfd-bounces@ietf.org> on behalf of "Albert Fu = (BLOOMBERG/ 120 PARK)" <afu14@bloomberg.net>
Reply-To: Albert Fu <afu14@bloomberg.net>
Date: Sunday, January 31, = 2021 at 2:06 PM
To: <rtg-bfd@ietf.org>
Subject: Re:Rtg-bfd Digest, Vol = 178, Issue 5
 
Hi,

1. Re: = New Version Notification for
draft-ietf-bfd-stability-07.txt= (Reshad Rahman)

This feature is good to = have. As a matter of fact, we have been trying to get vendors to expose = BFD counters as we know links from carriers do drop packets without any = indication of errors, and the basic send/receive counters are not = reliable indicators, since the timers are randomized up to 25% = lower.
 
The draft talks about = geneation of diagnostic info but no details. I would think syslog is not = practical for large network. What do you think about mentioning keeping = counters of missing seq numbers, and have these counters exposed to = telemetry/snmp? This would be very useful to us.
 
Thanks
 
Albert
=

Mahesh Jethanandani
mjethanandani@gmail.com





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Thu, 25 Feb 2021 23:13:10 +0000 Received: by smtp423.mail.bf1.yahoo.com (VZM Hermes SMTP Server) with ESMTPA ID 475622325272d8628f3e6cb6b2a37262; Thu, 25 Feb 2021 23:13:08 +0000 (UTC) User-Agent: Microsoft-MacOutlook/16.44.20121301 Date: Thu, 25 Feb 2021 18:13:06 -0500 Subject: Re: Rtg-bfd Digest, Vol 178, Issue 5 From: Reshad Rahman To: Mahesh Jethanandani , Reshad Rahman CC: "rtg-bfd@ietf. org" , Albert Fu Message-ID: Thread-Topic: Rtg-bfd Digest, Vol 178, Issue 5 References: <6016FF99010E05DC00390001_0_4903@msllnjpmsgsv06> <18D0D533-4735-4EC9-A569-4C1960A1CF2B@yahoo.com> <1A8F1E82-4F2F-42F8-BD4B-5CF5E7027AAA@gmail.com> In-Reply-To: <1A8F1E82-4F2F-42F8-BD4B-5CF5E7027AAA@gmail.com> Mime-version: 1.0 Content-type: multipart/alternative; boundary="B_3697121587_1147850246" X-Mailer: WebService/1.1.17712 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Apache-HttpAsyncClient/4.1.4 (Java/11.0.9.1) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 25 Feb 2021 23:13:13 -0000 > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3697121587_1147850246 Content-type: text/plain; charset="UTF-8" Content-transfer-encoding: quoted-printable Hi Mahesh, =20 Thanks for doing the update. Yes, I can do the review. =20 Regards, Reshad. =20 From: Rtg-bfd on behalf of Mahesh Jethanandani <= mjethanandani@gmail.com> Date: Wednesday, February 24, 2021 at 10:54 PM To: Reshad Rahman Cc: "rtg-bfd@ietf. org" , Albert Fu Subject: Re: Rtg-bfd Digest, Vol 178, Issue 5 =20 Hi Reshad, =20 On Feb 23, 2021, at 7:15 PM, Reshad Rahman wrote: =20 Hi Albert, =20 Apologies for the delay in replying. =20 I believe (no hat) that there is value in adding counters to expose drop-re= lated info. We should look into augmenting the BFD YANG model, not sure whet= her we should add that in the stability draft=E2=80=A6 I would like to hear from t= he WG. =20 +1 =20 Done. However, the document now needs a YANG Doctor review. Do you think yo= u can take a quick review of it? =20 =20 Regards, Reshad.=20 =20 From: Rtg-bfd on behalf of "Albert Fu (BLOOMBERG= / 120 PARK)" Reply-To: Albert Fu Date: Sunday, January 31, 2021 at 2:06 PM To: Subject: Re:Rtg-bfd Digest, Vol 178, Issue 5 =20 Hi, 1. Re: New Version Notification for draft-ietf-bfd-stability-07.txt (Reshad Rahman) This feature is good to have. As a matter of fact, we have been trying to g= et vendors to expose BFD counters as we know links from carriers do drop pac= kets without any indication of errors, and the basic send/receive counters a= re not reliable indicators, since the timers are randomized up to 25% lower. =20 The draft talks about geneation of diagnostic info but no details. I would = think syslog is not practical for large network. What do you think about men= tioning keeping counters of missing seq numbers, and have these counters exp= osed to telemetry/snmp? This would be very useful to us. =20 Thanks =20 Albert =20 Mahesh Jethanandani mjethanandani@gmail.com =20 =20 =20 =20 --B_3697121587_1147850246 Content-type: text/html; charset="UTF-8" Content-transfer-encoding: quoted-printable

Hi Mahesh,=

 

Thanks for do= ing the update. Yes, I can do the review.

<= o:p> 

Regards,

Reshad.

 

From: <= /b>Rtg-bfd <rtg-bfd-bounces@ie= tf.org> on behalf of Mahesh Jethanandani <mjethanandani@gmail.com><= br>Date: Wednesday, February 24, 2021 at 10:54 PM
To: Resha= d Rahman <reshad=3D40yahoo.com@dmarc.ietf.org>
Cc: "rtg-b= fd@ietf. org" <rtg-bfd@ietf.org>, Albert Fu <afu14@bloomberg.n= et>
Subject: Re: Rtg-bfd Digest, Vol 178, Issue 5

 

Hi Reshad,

&nb= sp;

<= div>

On Feb 23, 2021, at 7:15 PM, Reshad Rahman <reshad=3D40yahoo.com@dmarc.ietf.o= rg> wrote:

 

Hi Albert,

 

Apologies for t= he delay in replying.

 

I believe (no hat) that there is va= lue in adding counters to expose drop-related info. We should look into augm= enting the BFD YANG model, not sure whether we should add that in the stabil= ity draft=E2=80=A6 I would like to hear from the WG.

 

+1

 

Done. However, the document now needs a YANG Docto= r review. Do you think you can take a quick review of it?

 



 

Regards,

Reshad. 

 

From: = Rtg-bfd <rtg-bfd-bounces@ietf.org> on behalf of "Albe= rt Fu (BLOOMBERG/ 120 PARK)" <a= fu14@bloomberg.net>
Reply-To:=  Albert Fu <afu14@bl= oomberg.net>
Date: Sunday, January 31, 2021 at 2:06 PM
To: <rtg-bfd@ietf= .org>
Subject: Re:Rtg-bfd Digest, Vol 178, Issue 5

=

 

Hi,

 

The draft talks about geneation of diagnostic info but no details. I = would think syslog is not practical for large network. What do you think abo= ut mentioning keeping counters of missing seq numbers, and have these counte= rs exposed to telemetry/snmp? This would be very useful to us.

 

Thanks

Albert

 

Mahesh Je= thanandani

 

 

 

&nbs= p;

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