Hi Med,

thank you for your review and comments. Please find m= y notes in-lined below tagged by GIM>>.

Rega= rds,

Greg

On Wed, Oct 13, 2021 at 7:54 AM <mohamed.boucadair@orange.com> wrot= e:

Hi Greg, all,

=C2=A0

Please find below some quick comments a= bout this version:

=C2=A0

(1)

=C2=A0

=E2=80=9CWhile SFC Echo Request always = traverses the SFP, it is directed to,=C2=A0=C2=A0

the corresponding Echo Reply usually is= sent over an IP network.=E2=80=9D

=C2=A0

I=E2=80=99m not sure to get the intent = here, especially that an SFP is still =E2=80=9Cover an IP network=E2=80=9D.=

GIM>> We are pointing out th= at the Echo Request traverses SFP using NSH while the Echo Reply is not. Do= you think that explicitly referring=C2=A0to the role of NSH helps to make = it clearer:

OLD TEXT:

=C2=A0 =C2=A0While SFC Echo = Request always traverses the SFP, it is directed to,

=C2=A0 =C2= =A0the corresponding Echo Reply usually is sent over an IP network.

NEW TEXT:

=C2=A0 =C2=A0While SFC Echo Request alway= s traverses the SFP, it is directed to,

=C2=A0 =C2=A0using NSH, t= he corresponding Echo Reply usually is sent over an IP

=C2=A0 =C2= =A0network without NSH.

=C2=A0

I have the same concern with this one:

=C2=A0

=E2=80=9CThere are scenarios when it is= beneficial to direct the responder to=C2=A0

use a path other than the IP network=E2= =80=9C

GIM>> Would the follow= ing update make it clearer:

OLD TEXT:

=C2=A0 =C2=A0Ther= e are scenarios when it is beneficial to direct the responder to

= =C2=A0 =C2=A0use a path other than the IP network.=C2=A0

NEW TEXT= :

=C2=A0 =C2=A0In some cases, an operator might choose to direct = the responder

=C2=A0 =C2=A0to send the Echo Reply with NSH over a= particular SFP.

=

=C2=A0

(2) You may want align these two statem= ents to avoid what may be perceived as an internal inconsistency (or redund= ant requirements):

=C2=A0

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 The Mess= age Authentication Code (MAC) Context Header that is defined=C2=A0

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 in [I-D.= ietf-sfc-nsh-integrity] MAY be used to protect the SFC Echo=C2=A0=C2=A0

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Request&= #39;s integrity when using the SFC Return Path TLV

=C2=A0

vs.

=C2=A0

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 When the= integrity protection for SFC active OAM, and SFC Echo

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Request/= Reply in particular, is required, it is RECOMMENDED to use

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 one of t= he Context Headers defined in [I-D.ietf-sfc-nsh-integrity].

GIM>> Thank you for catching this inconsiste= ncy. Would you agree that s/MAY/SHOULD/ resolves it?=C2=A0

<= p class=3D"MsoNormal">

=C2=A0

Cheers,

Med

=C2=A0

De=C2=A0: sfc <sfc-bounces@ietf.org> De la part d= e Greg Mirsky
Envoy=C3=A9=C2=A0: vendredi 8 octobre 2021 18:19
=C3=80=C2=A0: Service Function Chaining IETF list <sfc@ietf.org>; sfc-chairs@ietf.org
Objet=C2=A0: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-oam-1= 4.txt

=C2=A0

Dear All,

following the discussion on the SFC WG mailing list = and the direction from the SFC WG Chairs, we've merged substantive part= s of=C2=A0draft-ao-sfc-oam-path-consistency and=C2=A0draft-ao-sfc-oam-retur= n-path-specified with this draft where the base functionality of the SFC NSH Echo Request/Reply is defined. The authors gr= eatly appreciate and welcome your comments, questions, and suggestions. We&= #39;re looking forward to the discussion that will help to progress this do= cument to the WG LC.

=C2=A0

Regards,

Greg (on behalf of the = authors).

---------- Forwarded message ---------
From: <int= ernet-drafts@ietf.org>
Date: Fri, Oct 8, 2021 at 9:13 AM
Subject: [sfc] I-D Action: draft-ietf-sfc-multi-layer-oam-14.txt
To: <i-d-anno= unce@ietf.org>
Cc: <sfc@ietf.org&= gt;

A New Internet-Draft is available from the on-line Internet-Drafts director= ies.
This draft is a work item of the Service Function Chaining WG of the IETF.<= br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Title=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:= Active OAM for Service Function Chaining
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Authors=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: Greg= Mirsky
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Wei Meng
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Ting Ao
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Kent Leung
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Gyan Mishra
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Filename=C2=A0 =C2=A0 =C2=A0 =C2=A0 : draft-iet= f-sfc-multi-layer-oam-14.txt
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Pages=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:= 37
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Date=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 := 2021-10-08

Abstract:
=C2=A0 =C2=A0A set of requirements for active Operation, Administration, an= d
=C2=A0 =C2=A0Maintenance (OAM) of Service Function Chains (SFCs) in a netwo= rk is
=C2=A0 =C2=A0presented in this document.=C2=A0 Based on these requirements,= an
=C2=A0 =C2=A0encapsulation of active OAM messages in SFC and a mechanism to= detect
=C2=A0 =C2=A0and localize defects are described.

=C2=A0 =C2=A0This document updates RFC 8300.=C2=A0 Particularly, it updates= the
=C2=A0 =C2=A0definition of O (OAM) bit in the Network Service Header (NSH) = (RFC
=C2=A0 =C2=A08300) and defines how an active OAM message is identified in t= he NSH.

The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-l= ayer-oam/

There is also an HTML version available at:
https://www.ietf.org/archive/id/draft-ietf-sfc-mu= lti-layer-oam-14.html

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-sfc= -multi-layer-oam-14

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp= .ietf.org/internet-drafts/

_______________________________________________
sfc mailing list
sfc@ietf.org
htt= ps://www.ietf.org/mailman/listinfo/sfc

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List-Help: List-Subscribe: , X-List-Received-Date: Fri, 15 Oct 2021 20:11:49 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Service Function Chaining WG of the IETF. Title : Active OAM for Service Function Chaining Authors : Greg Mirsky Wei Meng Ting Ao Kent Leung Gyan Mishra Filename : draft-ietf-sfc-multi-layer-oam-15.txt Pages : 37 Date : 2021-10-15 Abstract: A set of requirements for active Operation, Administration, and Maintenance (OAM) of Service Function Chains (SFCs) in a network is presented in this document. Based on these requirements, an encapsulation of active OAM messages in SFC and a mechanism to detect and localize defects are described. This document updates RFC 8300. Particularly, it updates the definition of O (OAM) bit in the Network Service Header (NSH) (RFC 8300) and defines how an active OAM message is identified in the NSH. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/ There is also an HTML version available at: https://www.ietf.org/archive/id/draft-ietf-sfc-multi-layer-oam-15.html A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-sfc-multi-layer-oam-15 Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Fri Oct 15 13:13:33 2021 Return-Path: X-Original-To: sfc@ietfa.amsl.com Delivered-To: sfc@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id BE63B3A0A6D; Fri, 15 Oct 2021 13:13:30 -0700 (PDT) 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 lTpy_0bySguF; Fri, 15 Oct 2021 13:13:25 -0700 (PDT) Received: from mail-ed1-x536.google.com (mail-ed1-x536.google.com [IPv6:2a00:1450:4864:20::536]) (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 07FB43A0A4D; Fri, 15 Oct 2021 13:13:25 -0700 (PDT) Received: by mail-ed1-x536.google.com with SMTP id y30so24781769edi.0; Fri, 15 Oct 2021 13:13:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=RUF6Y9nm8t8xraGu5BtVvVP248dPxnhTig4kn9IOiTI=; b=SC+4/3SFo50M8vFxqrpM4IKCCMuC3m6ku/eCO1xv6976YnjM4yyko+3AIcq3/BXQU1 oQOwt3SOEKDLW9scRKOYLgDcauFdlUvoeL+UQxyS3g+JkWrVoLNSXsLf8zlZu364w53A KFgCXdZ8kqjA6Z3+LFmaro5IABzdg9dXj7+1a0i1EY/WZn4xIWyakmOJLZ57diS3b1Ir twsTrZ/3bOqDWqIgLg9g3xKZ5vOTjf1i7AgM014weHd394JiZ5VT/YK6XqjRrNFSucKB 91uBQ6YR7Gpthdg+jJAXdy1UtuAIoVToxTv+K+CUEZjxwKcxCwR9u3jl1SHraG/X3Q/8 tkNg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=RUF6Y9nm8t8xraGu5BtVvVP248dPxnhTig4kn9IOiTI=; b=yW0h8566EjqbfE7QRv8ylAXFag1IqkU3sljKLEhGEAa9fk2N9PaNICHgiTriHISI0m KMFVVhNAmf0q/ojhtMfr6o7OFxL5DcTgzODTQTTPDNkoQVBmU1of8aCI8/y/P70GTRxL VnSEsc8PfI2+p26xKacbhiowubb162WTpVRAjcgKhi+7p8pkK3o4ZHd3O16LCJ8NWJ3j UsxIV+fDhvp61Z4cYopke7ZJAYFxM1ttdwM5tX2cCgkMyVUYcFZgt2yix4+zEQ55/0Lt PZPJ9J1YA2rLbQ6y9g0zifX56W+1aZH935Te4mLJJzY68m1xXqcJ+3sPmGsaU95g6lxX ugiA== X-Gm-Message-State: AOAM530W6OQGbnL/aEnreHcohJJpK16jaK1tyLOp3S/FoK5wUBX9OlU7 ap/K5Vrh9q/LwU9gTWLgoPKef/fIoQDIxADbG1s= X-Google-Smtp-Source: ABdhPJwAwmMHyp6a2nFBvbaOoc/ifmxZHJhdIWBupD/J5c9pgpJ0uRvAHHtXw9bncvwZaVZDKif5p2gsDuvZ+mAWB5U= X-Received: by 2002:a50:e106:: with SMTP id h6mr20479567edl.295.1634328802843; Fri, 15 Oct 2021 13:13:22 -0700 (PDT) MIME-Version: 1.0 References: <163370962115.18283.9043697369207976285@ietfa.amsl.com> <10112_1634136890_6166F33A_10112_380_1_787AE7BB302AE849A7480A190F8B93303542B55C@OPEXCAUBMA2.corporate.adroot.infra.ftgroup> <11909_1634317047_6169B2F7_11909_25_1_787AE7BB302AE849A7480A190F8B93303542CC72@OPEXCAUBMA2.corporate.adroot.infra.ftgroup> In-Reply-To: <11909_1634317047_6169B2F7_11909_25_1_787AE7BB302AE849A7480A190F8B93303542CC72@OPEXCAUBMA2.corporate.adroot.infra.ftgroup> From: Greg Mirsky Date: Fri, 15 Oct 2021 13:13:11 -0700 Message-ID: To: Med Boucadair Cc: Service Function Chaining IETF list , "sfc-chairs@ietf.org" Content-Type: multipart/alternative; boundary="000000000000bd635005ce69d3af" Archived-At: Subject: Re: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-oam-14.txt X-BeenThere: sfc@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Network Service Chaining List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 15 Oct 2021 20:13:31 -0000 --000000000000bd635005ce69d3af Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Med, thank you for your quick response. I've modified the text according to your suggestions and uploaded the new version. Regards, Greg On Fri, Oct 15, 2021 at 9:57 AM wrote: > Hi Greg, > > > > Please see inline. > > > > Cheers, > > Med > > > > *De :* Greg Mirsky > *Envoy=C3=A9 :* vendredi 15 octobre 2021 18:06 > *=C3=80 :* BOUCADAIR Mohamed INNOV/NET > *Cc :* Service Function Chaining IETF list ; > sfc-chairs@ietf.org > *Objet :* Re: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-oam-14.tx= t > > > > Hi Med, > > thank you for your review and comments. Please find my notes in-lined > below tagged by GIM>>. > > > > Regards, > > Greg > > > > On Wed, Oct 13, 2021 at 7:54 AM wrote: > > Hi Greg, all, > > > > Please find below some quick comments about this version: > > > > (1) > > > > =E2=80=9CWhile SFC Echo Request always traverses the SFP, it is directed = to, > > the corresponding Echo Reply usually is sent over an IP network.=E2=80=9D > > > > I=E2=80=99m not sure to get the intent here, especially that an SFP is st= ill =E2=80=9Cover > an IP network=E2=80=9D. > > GIM>> We are pointing out that the Echo Request traverses SFP using NSH > while the Echo Reply is not. Do you think that explicitly referring to th= e > role of NSH helps to make it clearer: > > OLD TEXT: > > While SFC Echo Request always traverses the SFP, it is directed to, > > the corresponding Echo Reply usually is sent over an IP network. > > NEW TEXT: > > While SFC Echo Request always traverses the SFP, it is directed to, > > using NSH, the corresponding Echo Reply usually is sent over an IP > > network without NSH. > > > > *[Med] I would just delete =E2=80=9Cover an IP network=E2=80=9D from the = NEW text. Thanks. > * > > > > > > I have the same concern with this one: > > > > =E2=80=9CThere are scenarios when it is beneficial to direct the responde= r to > > use a path other than the IP network=E2=80=9C > > GIM>> Would the following update make it clearer: > > OLD TEXT: > > There are scenarios when it is beneficial to direct the responder to > > use a path other than the IP network. > > NEW TEXT: > > In some cases, an operator might choose to direct the responder > > to send the Echo Reply with NSH over a particular SFP. > > > > *[Med] This is better, thanks. * > > > > (2) You may want align these two statements to avoid what may be perceive= d > as an internal inconsistency (or redundant requirements): > > > > The Message Authentication Code (MAC) Context Header that is > defined > > in [I-D.ietf-sfc-nsh-integrity] MAY be used to protect the SFC > Echo > > Request's integrity when using the SFC Return Path TLV > > > > vs. > > > > When the integrity protection for SFC active OAM, and SFC Echo > > Request/Reply in particular, is required, it is RECOMMENDED to use > > one of the Context Headers defined in [I-D.ietf-sfc-nsh-integrity]. > > GIM>> Thank you for catching this inconsistency. Would you agree that > s/MAY/SHOULD/ resolves it? > > *[Med] Yes=E2=80=A6 but I would just maintain the one in the Security > Considerations Section. * > > > > Cheers, > > Med > > > > *De :* sfc *De la part de* Greg Mirsky > *Envoy=C3=A9 :* vendredi 8 octobre 2021 18:19 > *=C3=80 :* Service Function Chaining IETF list ; > sfc-chairs@ietf.org > *Objet :* [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-oam-14.txt > > > > Dear All, > > following the discussion on the SFC WG mailing list and the direction fro= m > the SFC WG Chairs, we've merged substantive parts > of draft-ao-sfc-oam-path-consistency > and draft-ao-sfc-oam-return-path-specified with this draft where the base > functionality of the SFC NSH Echo Request/Reply is defined. The authors > greatly appreciate and welcome your comments, questions, and suggestions. > We're looking forward to the discussion that will help to progress this > document to the WG LC. > > > > Regards, > > Greg (on behalf of the authors). > > ---------- Forwarded message --------- > From: > Date: Fri, Oct 8, 2021 at 9:13 AM > Subject: [sfc] I-D Action: draft-ietf-sfc-multi-layer-oam-14.txt > To: > Cc: > > > > > A New Internet-Draft is available from the on-line Internet-Drafts > directories. > This draft is a work item of the Service Function Chaining WG of the IETF= . > > Title : Active OAM for Service Function Chaining > Authors : Greg Mirsky > Wei Meng > Ting Ao > Kent Leung > Gyan Mishra > Filename : draft-ietf-sfc-multi-layer-oam-14.txt > Pages : 37 > Date : 2021-10-08 > > Abstract: > A set of requirements for active Operation, Administration, and > Maintenance (OAM) of Service Function Chains (SFCs) in a network is > presented in this document. Based on these requirements, an > encapsulation of active OAM messages in SFC and a mechanism to detect > and localize defects are described. > > This document updates RFC 8300. Particularly, it updates the > definition of O (OAM) bit in the Network Service Header (NSH) (RFC > 8300) and defines how an active OAM message is identified in the NSH. > > > The IETF datatracker status page for this draft is: > https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/ > > There is also an HTML version available at: > https://www.ietf.org/archive/id/draft-ietf-sfc-multi-layer-oam-14.html > > A diff from the previous version is available at: > https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-sfc-multi-layer-oam-14 > > > Internet-Drafts are also available by anonymous FTP at: > ftp://ftp.ietf.org/internet-drafts/ > > > _______________________________________________ > sfc mailing list > sfc@ietf.org > https://www.ietf.org/mailman/listinfo/sfc > > _________________________________________________________________________= ________________________________________________ > > > > Ce message et ses pieces jointes peuvent contenir des informations confid= entielles ou privilegiees et ne doivent donc > > pas etre diffuses, exploites ou copies sans autorisation. 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Les messages = electroniques etant susceptibles d'alteration, > Orange decline toute responsabilite si ce message a ete altere, deforme o= u falsifie. Merci. > > This message and its attachments may contain confidential or privileged i= nformation that may be protected by law; > they should not be distributed, used or copied without authorisation. > If you have received this email in error, please notify the sender and de= lete this message and its attachments. > As emails may be altered, Orange is not liable for messages that have bee= n modified, changed or falsified. > Thank you. > > --000000000000bd635005ce69d3af Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Hi Med,

thank you for your quick response. I've mo= dified the text according to your suggestions and uploaded the new version.=

Regards,

Greg

On Fri, Oct 15, 2021= at 9:57 AM <mohamed.bou= cadair@orange.com> wrote:

Hi Greg,

=C2=A0

Please see inline.

=C2=A0

Cheers,

Med

=C2=A0
De=C2=A0: Greg Mirsky <gregimirsky@gmail.com>
Envoy=C3=A9=C2=A0: vendredi 15 octobre 2021 18:06
=C3=80=C2=A0: BOUCADAIR Mohamed INNOV/NET <mohamed.boucadair@orange.com>
Cc=C2=A0: Service Function Chaining IETF list <sfc@ietf.org>; sfc-chairs@ietf.org
Objet=C2=A0: Re: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-o= am-14.txt

=C2=A0
Hi Med,

thank you for your review and comments. Please find = my notes in-lined below tagged by GIM>>.

=C2=A0

Regards,

Greg

=C2=A0
On Wed, Oct 13, 2021 at 7:54 AM <mohamed.boucadair@orange.= com> wrote:

Hi Greg, all,

=C2=A0

Please find below some quick comments about t= his version:

=C2=A0

(1)

=C2=A0

=E2=80=9CWhile SFC Echo Request always traver= ses the SFP, it is directed to,=C2=A0=C2=A0

the corresponding Echo Reply usually is sent = over an IP network.=E2=80=9D

=C2=A0

I=E2=80=99m not sure to get the intent here, = especially that an SFP is still =E2=80=9Cover an IP network=E2=80=9D.

GIM>> We are pointing out that the Echo Reques= t traverses SFP using NSH while the Echo Reply is not. Do you think that ex= plicitly referring=C2=A0to the role of NSH helps to make it clearer:=

OLD TEXT:

=C2=A0 =C2=A0While SFC Echo Request always traverses= the SFP, it is directed to,

=C2=A0 =C2=A0the corresponding Echo Reply usually is= sent over an IP network.

NEW TEXT:

=C2=A0 =C2=A0While SFC Echo Request always traverses= the SFP, it is directed to,

=C2=A0 =C2=A0using NSH, the corresponding Echo Reply= usually is sent over an IP

=C2=A0 =C2=A0network without NSH.

=C2=A0

[Med] I would just delete =E2=80=9Cover= an IP network=E2=80=9D from the NEW text. Thanks.

=C2=A0

=C2=A0<= /u>

I have the same concern with this one:

=C2=A0

=E2=80=9CThere are scenarios when it is benef= icial to direct the responder to=C2=A0

use a path other than the IP network=E2=80=9C=

GIM>> Would the following update make it clear= er:

OLD TEXT:

=C2=A0 =C2=A0There are scenarios when it is benefici= al to direct the responder to

=C2=A0 =C2=A0use a path other than the IP network.= =C2=A0

NEW TEXT:

=C2=A0 =C2=A0In some cases, an operator might choose= to direct the responder

=C2=A0 =C2=A0to send the Echo Reply with NSH over a = particular SFP.

=C2=A0

[Med] This is better, thanks.

=C2=A0<= /u>

(2) You may want align these two statements t= o avoid what may be perceived as an internal inconsistency (or redundant requirements):

=C2=A0

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 The Message Au= thentication Code (MAC) Context Header that is defined=C2=A0

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 in [I-D.ietf-s= fc-nsh-integrity] MAY be used to protect the SFC Echo=C2=A0=C2=A0

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Request's = integrity when using the SFC Return Path TLV

=C2=A0

vs.

=C2=A0

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 When the integ= rity protection for SFC active OAM, and SFC Echo

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Request/Reply = in particular, is required, it is RECOMMENDED to use

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 one of the Con= text Headers defined in [I-D.ietf-sfc-nsh-integrity].<= /p>

GIM>> Thank you for catching this inconsistenc= y. Would you agree that s/MAY/SHOULD/ resolves it?=C2=A0

[Med] Yes=E2=80=A6 but I would just mai= ntain the one in the Security Considerations Section. =C2=A0=

=C2=A0<= /u>

Cheers,

Med

=C2=A0

De=C2=A0: sfc <sfc-bounces@ietf.org> De la part de Greg Mirsky
Envoy=C3=A9=C2=A0: vendredi 8 octobre 2021 18:19
=C3=80=C2=A0: Service Function Chaining IETF list <sfc@ietf.org>; sfc-chairs@ietf.or= g
Objet=C2=A0: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-oam-1= 4.txt

=C2=A0

Dear All,

following the discussion on the SFC WG mailing list = and the direction from the SFC WG Chairs, we've merged substantive part= s of=C2=A0draft-ao-sfc-oam-path-consistency and=C2=A0draft-ao-sfc-oam-retur= n-path-specified with this draft where the base functionality of the SFC NSH Echo Request/R= eply is defined. The authors greatly appreciate and welcome your comments, = questions, and suggestions. We're looking forward to the discussion tha= t will help to progress this document to the WG LC.

=C2=A0

Regards,

Greg (on behalf of the = authors).

---------- Forwarded message ---------
From: <int= ernet-drafts@ietf.org>
Date: Fri, Oct 8, 2021 at 9:13 AM
Subject: [sfc] I-D Action: draft-ietf-sfc-multi-layer-oam-14.txt
To: <i-d-anno= unce@ietf.org>
Cc: <sfc@ietf.org&= gt;

A New Internet-Draft is available from the on-line Internet-Drafts director= ies.
This draft is a work item of the Service Function Chaining WG of the IETF.<= br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Title=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:= Active OAM for Service Function Chaining
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Authors=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: Greg= Mirsky
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Wei Meng
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Ting Ao
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Kent Leung
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Gyan Mishra
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Filename=C2=A0 =C2=A0 =C2=A0 =C2=A0 : draft-iet= f-sfc-multi-layer-oam-14.txt
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Pages=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:= 37
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Date=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 := 2021-10-08

Abstract:
=C2=A0 =C2=A0A set of requirements for active Operation, Administration, an= d
=C2=A0 =C2=A0Maintenance (OAM) of Service Function Chains (SFCs) in a netwo= rk is
=C2=A0 =C2=A0presented in this document.=C2=A0 Based on these requirements,= an
=C2=A0 =C2=A0encapsulation of active OAM messages in SFC and a mechanism to= detect
=C2=A0 =C2=A0and localize defects are described.

=C2=A0 =C2=A0This document updates RFC 8300.=C2=A0 Particularly, it updates= the
=C2=A0 =C2=A0definition of O (OAM) bit in the Network Service Header (NSH) = (RFC
=C2=A0 =C2=A08300) and defines how an active OAM message is identified in t= he NSH.

The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-l= ayer-oam/

There is also an HTML version available at:
https://www.ietf.org/archive/id/draft-ietf-sfc-mu= lti-layer-oam-14.html

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-sfc= -multi-layer-oam-14

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp= .ietf.org/internet-drafts/

_______________________________________________
sfc mailing list
sfc@ietf.org
htt= ps://www.ietf.org/mailman/listinfo/sfc

______________________________________________________________________= ___________________________________________________

=C2=A0

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pas etre diffuses, exploites ou copies sans autorisation. Si vous avez= recu ce message par erreur, veuillez le signaler

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

=C2=A0

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

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______________________________________________________________________= ___________________________________________________ Ce message et ses pieces jointes peuvent contenir des informations confiden= tielles ou privilegiees et ne doivent donc pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu= ce message par erreur, veuillez le signaler a l'expediteur et le detruire ainsi que les pieces jointes. Les message= s electroniques etant susceptibles d'alteration, Orange decline toute responsabilite si ce message a ete altere, deforme ou = falsifie. Merci. This message and its attachments may contain confidential or privileged inf= ormation that may be protected by law; they should not be distributed, used or copied without authorisation. If you have received this email in error, please notify the sender and dele= te this message and its attachments. As emails may be altered, Orange is not liable for messages that have been = modified, changed or falsified. Thank you.

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ABdhPJz+b4v4JFtOLbwPdRk5q3/7zVvvz7FM8oHLR3yQIGezyDD77uyQ/xPe28VE55Ux2oLO1Ljt9Oc/tV6eiieHC4o= X-Received: by 2002:a05:6402:3547:: with SMTP id f7mr45247736edd.395.1634573730397; Mon, 18 Oct 2021 09:15:30 -0700 (PDT) MIME-Version: 1.0 References: <163370962115.18283.9043697369207976285@ietfa.amsl.com> <10112_1634136890_6166F33A_10112_380_1_787AE7BB302AE849A7480A190F8B93303542B55C@OPEXCAUBMA2.corporate.adroot.infra.ftgroup> <11909_1634317047_6169B2F7_11909_25_1_787AE7BB302AE849A7480A190F8B93303542CC72@OPEXCAUBMA2.corporate.adroot.infra.ftgroup> <8945_1634534769_616D0571_8945_291_1_787AE7BB302AE849A7480A190F8B93303542D7FE@OPEXCAUBMA2.corporate.adroot.infra.ftgroup> In-Reply-To: <8945_1634534769_616D0571_8945_291_1_787AE7BB302AE849A7480A190F8B93303542D7FE@OPEXCAUBMA2.corporate.adroot.infra.ftgroup> From: Greg Mirsky Date: Mon, 18 Oct 2021 09:15:19 -0700 Message-ID: To: Med Boucadair Cc: "sfc-chairs@ietf.org" , Service Function Chaining IETF list Content-Type: multipart/mixed; boundary="0000000000008f594605cea2da7c" Archived-At: Subject: Re: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-oam-14.txt X-BeenThere: sfc@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Network Service Chaining List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Oct 2021 16:15:42 -0000 --0000000000008f594605cea2da7c Content-Type: multipart/alternative; boundary="0000000000008f594405cea2da7a" --0000000000008f594405cea2da7a Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Med, thank you for pointing that out to me. Attached is the diff highlighting the proposed update. I greatly appreciate your feedback on the proposed change. Regards, Greg On Sun, Oct 17, 2021 at 10:26 PM wrote: > Hi Greg, > > > > Thank you. > > > > There is still one statement that was not removed, though: > > > > (6.6.1): > > > > The initiator of CVReq MAY require the collected information in the > > CVRep be sent in the integrity-protected mode using the MAC Context > > Header, defined in [I-D.ietf-sfc-nsh-integrity]. > > > > Cheers, > > Med > > > > *De :* sfc *De la part de* Greg Mirsky > *Envoy=C3=A9 :* vendredi 15 octobre 2021 22:13 > *=C3=80 :* BOUCADAIR Mohamed INNOV/NET > *Cc :* sfc-chairs@ietf.org; Service Function Chaining IETF list < > sfc@ietf.org> > *Objet :* Re: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-oam-14.tx= t > > > > Hi Med, > > thank you for your quick response. I've modified the text according to > your suggestions and uploaded the new version. > > > > Regards, > > Greg > > > > On Fri, Oct 15, 2021 at 9:57 AM wrote: > > Hi Greg, > > > > Please see inline. > > > > Cheers, > > Med > > > > *De :* Greg Mirsky > *Envoy=C3=A9 :* vendredi 15 octobre 2021 18:06 > *=C3=80 :* BOUCADAIR Mohamed INNOV/NET > *Cc :* Service Function Chaining IETF list ; > sfc-chairs@ietf.org > *Objet :* Re: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-oam-14.tx= t > > > > Hi Med, > > thank you for your review and comments. Please find my notes in-lined > below tagged by GIM>>. > > > > Regards, > > Greg > > > > On Wed, Oct 13, 2021 at 7:54 AM wrote: > > Hi Greg, all, > > > > Please find below some quick comments about this version: > > > > (1) > > > > =E2=80=9CWhile SFC Echo Request always traverses the SFP, it is directed = to, > > the corresponding Echo Reply usually is sent over an IP network.=E2=80=9D > > > > I=E2=80=99m not sure to get the intent here, especially that an SFP is st= ill =E2=80=9Cover > an IP network=E2=80=9D. > > GIM>> We are pointing out that the Echo Request traverses SFP using NSH > while the Echo Reply is not. Do you think that explicitly referring to th= e > role of NSH helps to make it clearer: > > OLD TEXT: > > While SFC Echo Request always traverses the SFP, it is directed to, > > the corresponding Echo Reply usually is sent over an IP network. > > NEW TEXT: > > While SFC Echo Request always traverses the SFP, it is directed to, > > using NSH, the corresponding Echo Reply usually is sent over an IP > > network without NSH. > > > > *[Med] I would just delete =E2=80=9Cover an IP network=E2=80=9D from the = NEW text. Thanks. > * > > > > > > I have the same concern with this one: > > > > =E2=80=9CThere are scenarios when it is beneficial to direct the responde= r to > > use a path other than the IP network=E2=80=9C > > GIM>> Would the following update make it clearer: > > OLD TEXT: > > There are scenarios when it is beneficial to direct the responder to > > use a path other than the IP network. > > NEW TEXT: > > In some cases, an operator might choose to direct the responder > > to send the Echo Reply with NSH over a particular SFP. > > > > *[Med] This is better, thanks. * > > > > (2) You may want align these two statements to avoid what may be perceive= d > as an internal inconsistency (or redundant requirements): > > > > The Message Authentication Code (MAC) Context Header that is > defined > > in [I-D.ietf-sfc-nsh-integrity] MAY be used to protect the SFC > Echo > > Request's integrity when using the SFC Return Path TLV > > > > vs. > > > > When the integrity protection for SFC active OAM, and SFC Echo > > Request/Reply in particular, is required, it is RECOMMENDED to use > > one of the Context Headers defined in [I-D.ietf-sfc-nsh-integrity]. > > GIM>> Thank you for catching this inconsistency. Would you agree that > s/MAY/SHOULD/ resolves it? > > *[Med] Yes=E2=80=A6 but I would just maintain the one in the Security > Considerations Section. * > > > > Cheers, > > Med > > > > *De :* sfc *De la part de* Greg Mirsky > *Envoy=C3=A9 :* vendredi 8 octobre 2021 18:19 > *=C3=80 :* Service Function Chaining IETF list ; > sfc-chairs@ietf.org > *Objet :* [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-oam-14.txt > > > > Dear All, > > following the discussion on the SFC WG mailing list and the direction fro= m > the SFC WG Chairs, we've merged substantive parts > of draft-ao-sfc-oam-path-consistency > and draft-ao-sfc-oam-return-path-specified with this draft where the base > functionality of the SFC NSH Echo Request/Reply is defined. The authors > greatly appreciate and welcome your comments, questions, and suggestions. > We're looking forward to the discussion that will help to progress this > document to the WG LC. > > > > Regards, > > Greg (on behalf of the authors). > > ---------- Forwarded message --------- > From: > Date: Fri, Oct 8, 2021 at 9:13 AM > Subject: [sfc] I-D Action: draft-ietf-sfc-multi-layer-oam-14.txt > To: > Cc: > > > > > A New Internet-Draft is available from the on-line Internet-Drafts > directories. > This draft is a work item of the Service Function Chaining WG of the IETF= . > > Title : Active OAM for Service Function Chaining > Authors : Greg Mirsky > Wei Meng > Ting Ao > Kent Leung > Gyan Mishra > Filename : draft-ietf-sfc-multi-layer-oam-14.txt > Pages : 37 > Date : 2021-10-08 > > Abstract: > A set of requirements for active Operation, Administration, and > Maintenance (OAM) of Service Function Chains (SFCs) in a network is > presented in this document. Based on these requirements, an > encapsulation of active OAM messages in SFC and a mechanism to detect > and localize defects are described. > > This document updates RFC 8300. Particularly, it updates the > definition of O (OAM) bit in the Network Service Header (NSH) (RFC > 8300) and defines how an active OAM message is identified in the NSH. > > > The IETF datatracker status page for this draft is: > https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/ > > There is also an HTML version available at: > https://www.ietf.org/archive/id/draft-ietf-sfc-multi-layer-oam-14.html > > A diff from the previous version is available at: > https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-sfc-multi-layer-oam-14 > > > Internet-Drafts are also available by anonymous FTP at: > ftp://ftp.ietf.org/internet-drafts/ > > > _______________________________________________ > sfc mailing list > sfc@ietf.org > https://www.ietf.org/mailman/listinfo/sfc > > _________________________________________________________________________= ________________________________________________ > > > > Ce message et ses pieces jointes peuvent contenir des informations confid= entielles ou privilegiees et ne doivent donc > > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez re= cu ce message par erreur, veuillez le signaler > > a l'expediteur et le detruire ainsi que les pieces jointes. Les messages = electroniques etant susceptibles d'alteration, > > Orange decline toute responsabilite si ce message a ete altere, deforme o= u falsifie. Merci. > > > > This message and its attachments may contain confidential or privileged i= nformation that may be protected by law; > > they should not be distributed, used or copied without authorisation. > > If you have received this email in error, please notify the sender and de= lete this message and its attachments. > > As emails may be altered, Orange is not liable for messages that have bee= n modified, changed or falsified. > > Thank you. > > _________________________________________________________________________= ________________________________________________ > > > > Ce message et ses pieces jointes peuvent contenir des informations confid= entielles ou privilegiees et ne doivent donc > > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez re= cu ce message par erreur, veuillez le signaler > > a l'expediteur et le detruire ainsi que les pieces jointes. Les messages = electroniques etant susceptibles d'alteration, > > Orange decline toute responsabilite si ce message a ete altere, deforme o= u falsifie. Merci. > > > > This message and its attachments may contain confidential or privileged i= nformation that may be protected by law; > > they should not be distributed, used or copied without authorisation. > > If you have received this email in error, please notify the sender and de= lete this message and its attachments. > > As emails may be altered, Orange is not liable for messages that have bee= n modified, changed or falsified. > > Thank you. > > _________________________________________________________________________= ________________________________________________ > > Ce message et ses pieces jointes peuvent contenir des informations confid= entielles ou privilegiees et ne doivent donc > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez re= cu ce message par erreur, veuillez le signaler > a l'expediteur et le detruire ainsi que les pieces jointes. Les messages = electroniques etant susceptibles d'alteration, > Orange decline toute responsabilite si ce message a ete altere, deforme o= u falsifie. Merci. > > This message and its attachments may contain confidential or privileged i= nformation that may be protected by law; > they should not be distributed, used or copied without authorisation. > If you have received this email in error, please notify the sender and de= lete this message and its attachments. > As emails may be altered, Orange is not liable for messages that have bee= n modified, changed or falsified. > Thank you. > > --0000000000008f594405cea2da7a Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Hi Med,

thank you for pointing that out to me. Attache= d is the diff highlighting the=C2=A0proposed update. I greatly appreciate y= our feedback on the proposed change.

Regards,

Greg

On Sun, Oct 17, 2021 at 10:26 PM <mohamed.boucadair@orange.com> wrote:

Hi Greg,

=C2=A0

Thank you.

=C2=A0

There is still one statement that was not rem= oved, though:

=C2=A0

(6.6.1):

=C2=A0

=C2=A0=C2=A0 The initiator of CVReq MAY requi= re the collected information in the

=C2=A0=C2=A0 CVRep be sent in the integrity-p= rotected mode using the MAC Context

=C2=A0=C2=A0 Header, defined in [I-D.ietf-sfc= -nsh-integrity].

=C2=A0

Cheers,

Med

=C2=A0

De=C2=A0: sfc <sfc-bounces@ietf.org> De la part d= e Greg Mirsky
Envoy=C3=A9=C2=A0: vendredi 15 octobre 2021 22:13
=C3=80=C2=A0: BOUCADAIR Mohamed INNOV/NET <mohamed.boucadair@orange.com>
Cc=C2=A0: s= fc-chairs@ietf.org; Service Function Chaining IETF list <sfc@ietf.org>
Objet=C2=A0: Re: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-o= am-14.txt

=C2=A0

Hi Med,

thank you for your quick response. I've modified= the text according to your suggestions and uploaded the new version.

=C2=A0

Regards,

Greg

=C2=A0

On Fri, Oct 15, 2021 at 9:57 AM <mohamed.boucadair@orange.= com> wrote:

Hi Greg,

=C2=A0

Please see inline.

=C2=A0

Cheers,

Med

=C2=A0

De=C2=A0: Greg Mirsky <gregimirsky@gmail.com>
Envoy=C3=A9=C2=A0: vendredi 15 octobre 2021 18:06
=C3=80=C2=A0: BOUCADAIR Mohamed INNOV/NET <mohamed.boucadair@orange.com>
Cc=C2=A0: Service Function Chaining IETF list <sfc@ietf.org>; sfc-chairs@ietf.or= g
Objet=C2=A0: Re: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-o= am-14.txt

=C2=A0

Hi Med,

thank you for your review and comments. Please find = my notes in-lined below tagged by GIM>>.

=C2=A0

Regards,

Greg

=C2=A0

On Wed, Oct 13, 2021 at 7:54 AM <mohamed.boucadair@orange.= com> wrote:

Hi Greg, all,

=C2=A0

Please find below some quick comments about t= his version:

=C2=A0

(1)

=C2=A0

=E2=80=9CWhile SFC Echo Request always traver= ses the SFP, it is directed to,=C2=A0=C2=A0

the corresponding Echo Reply usually is sent = over an IP network.=E2=80=9D

=C2=A0

I=E2=80=99m not sure to get the intent here, = especially that an SFP is still =E2=80=9Cover an IP network=E2=80=9D.

GIM>> We are pointing out that the Echo Reques= t traverses SFP using NSH while the Echo Reply is not. Do you think that ex= plicitly referring=C2=A0to the role of NSH helps to make it clearer:=

OLD TEXT:

=C2=A0 =C2=A0While SFC Echo Request always traverses= the SFP, it is directed to,

=C2=A0 =C2=A0the corresponding Echo Reply usually is= sent over an IP network.

NEW TEXT:

=C2=A0 =C2=A0While SFC Echo Request always traverses= the SFP, it is directed to,

=C2=A0 =C2=A0using NSH, the corresponding Echo Reply= usually is sent over an IP

=C2=A0 =C2=A0network without NSH.

=C2=A0

[Med] I would just delete =E2=80=9Cover= an IP network=E2=80=9D from the NEW text. Thanks.

=C2=A0

=C2=A0

I have the same concern with this one:

=C2=A0

=E2=80=9CThere are scenarios when it is benef= icial to direct the responder to=C2=A0

use a path other than the IP network=E2=80=9C=

GIM>> Would the following update make it clear= er:

OLD TEXT:

=C2=A0 =C2=A0There are scenarios when it is benefici= al to direct the responder to

=C2=A0 =C2=A0use a path other than the IP network.= =C2=A0

NEW TEXT:

=C2=A0 =C2=A0In some cases, an operator might choose= to direct the responder

=C2=A0 =C2=A0to send the Echo Reply with NSH over a = particular SFP.

=C2=A0

[Med] This is better, thanks.

=C2=A0

(2) You may want align these two statements t= o avoid what may be perceived as an internal inconsistency (or redundant requirements):

=C2=A0

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 The Message Au= thentication Code (MAC) Context Header that is defined=C2=A0

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 in [I-D.ietf-s= fc-nsh-integrity] MAY be used to protect the SFC Echo=C2=A0=C2=A0

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Request's = integrity when using the SFC Return Path TLV

=C2=A0

vs.

=C2=A0

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 When the integ= rity protection for SFC active OAM, and SFC Echo

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Request/Reply = in particular, is required, it is RECOMMENDED to use

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 one of the Con= text Headers defined in [I-D.ietf-sfc-nsh-integrity].<= /p>

GIM>> Thank you for catching this inconsistenc= y. Would you agree that s/MAY/SHOULD/ resolves it?=C2=A0

[Med] Yes=E2=80=A6 but I would just mai= ntain the one in the Security Considerations Section. =C2=A0=

=C2=A0

Cheers,

Med

=C2=A0

De=C2=A0: sfc <sfc-bounces@ietf.org> De la part de Greg Mirsky
Envoy=C3=A9=C2=A0: vendredi 8 octobre 2021 18:19
=C3=80=C2=A0: Service Function Chaining IETF list <sfc@ietf.org>; sfc-chairs@ietf.or= g
Objet=C2=A0: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-oam-1= 4.txt

=C2=A0

Dear All,

following the discussion on the SFC WG mailing list = and the direction from the SFC WG Chairs, we've merged substantive part= s of=C2=A0draft-ao-sfc-oam-path-consistency and=C2=A0draft-ao-sfc-oam-retur= n-path-specified with this draft where the base functionality of the SFC NSH Echo Request/R= eply is defined. The authors greatly appreciate and welcome your comments, = questions, and suggestions. We're looking forward to the discussion tha= t will help to progress this document to the WG LC.

=C2=A0

Regards,

Greg (on behalf of the = authors).

---------- Forwarded message ---------
From: <int= ernet-drafts@ietf.org>
Date: Fri, Oct 8, 2021 at 9:13 AM
Subject: [sfc] I-D Action: draft-ietf-sfc-multi-layer-oam-14.txt
To: <i-d-anno= unce@ietf.org>
Cc: <sfc@ietf.org&= gt;

A New Internet-Draft is available from the on-line Internet-Drafts director= ies.
This draft is a work item of the Service Function Chaining WG of the IETF.<= br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Title=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:= Active OAM for Service Function Chaining
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Authors=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: Greg= Mirsky
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Wei Meng
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Ting Ao
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Kent Leung
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Gyan Mishra
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Filename=C2=A0 =C2=A0 =C2=A0 =C2=A0 : draft-iet= f-sfc-multi-layer-oam-14.txt
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Pages=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:= 37
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Date=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 := 2021-10-08

Abstract:
=C2=A0 =C2=A0A set of requirements for active Operation, Administration, an= d
=C2=A0 =C2=A0Maintenance (OAM) of Service Function Chains (SFCs) in a netwo= rk is
=C2=A0 =C2=A0presented in this document.=C2=A0 Based on these requirements,= an
=C2=A0 =C2=A0encapsulation of active OAM messages in SFC and a mechanism to= detect
=C2=A0 =C2=A0and localize defects are described.

=C2=A0 =C2=A0This document updates RFC 8300.=C2=A0 Particularly, it updates= the
=C2=A0 =C2=A0definition of O (OAM) bit in the Network Service Header (NSH) = (RFC
=C2=A0 =C2=A08300) and defines how an active OAM message is identified in t= he NSH.

The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-l= ayer-oam/

There is also an HTML version available at:
https://www.ietf.org/archive/id/draft-ietf-sfc-mu= lti-layer-oam-14.html

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-sfc= -multi-layer-oam-14

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp= .ietf.org/internet-drafts/

_______________________________________________
sfc mailing list
sfc@ietf.org
htt= ps://www.ietf.org/mailman/listinfo/sfc

______________________________________________________________________= ___________________________________________________

=C2=A0

Ce message et ses pieces jointes peuvent contenir des informations con= fidentielles ou privilegiees et ne doivent donc

pas etre diffuses, exploites ou copies sans autorisation. Si vous avez= recu ce message par erreur, veuillez le signaler

a l'expediteur et le detruire ainsi que les pieces jointes. Les me= ssages electroniques etant susceptibles d'alteration,
Orange decline toute responsabilite si ce message a ete altere, deform= e ou falsifie. Merci.

=C2=A0

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

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

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

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

Thank you.

______________________________________________________________________= ___________________________________________________

=C2=A0

Ce message et ses pieces jointes peuvent contenir des informations con= fidentielles ou privilegiees et ne doivent donc

pas etre diffuses, exploites ou copies sans autorisation. Si vous avez= recu ce message par erreur, veuillez le signaler

a l'expediteur et le detruire ainsi que les pieces jointes. Les me= ssages electroniques etant susceptibles d'alteration,
Orange decline toute responsabilite si ce message a ete altere, deform= e ou falsifie. Merci.

=C2=A0

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

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

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

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

Thank you.
______________________________________________________________________=
___________________________________________________

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

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

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Franck, I don't think it is reasonable to expect the wg to produce actionable requirements on the security and/or operational aspects of such type of solution. I sadly don't have more useful suggestions than to either work with cfrg to come up with a solution which would work in domains where sfc is typically used or design a solution based on Christian's suggestion, but with possibly a limited scope of applicability. I suspect that any of these changes will require another round of review by the WG. -m Le 2021-09-28 à 19:15, Joel M. Halpern a écrit : > (Keeping the SFC group on copy in hopes they will prove me wrong.) > > I am not sure what to recommend here. Neither Jim nor I are in a > posiition to mediate a dispute about cryptography. > The document got through WG last call with barely sufficient support. > The odds of getting meaningful feadback if we ask the WG about the > problem scope are very low. We have had to push people to get enough > response to things on the charter that we commited to. > > If the proposed document does not work as written, then we shouldn't > progress it in its current form. As ntoed, getting meaningful WG > discussion of changes seems unlikely. > > Martin, if you have a suggestion, Jim and I (and presumably the WG) are > listening. > > Yours, > Joel > > On 9/28/2021 11:12 AM, Frank Brockners (fbrockne) wrote: >> Hi Christian, >> >> Thanks for the follow up – and the suggestion of an alternate >> approach. IMHO – and I checked with other authors, who voiced similar >> views – it would be best to follow your guidance and have the working >> group crispen up the requirements as well as assumptions for the >> operational environment and only then discuss and evaluate solution >> approaches. >> >> Depending on the target set of requirements and the operational >> environment, the WGcanchoose an appropriate approach with guidance >> fromCFRG. That could be, per what you suggest below, something much >> simpler from a control plane perspective - avoiding the complexities >> of SSS – with a data-plane as simple as what the draft currently >> suggests. That could also be another, yet to be determined approach, >> such as the approach based on nested encryption that the WG discussed >> before, or an SSS based approach with a polynomial per packet, etc. >> Hopefully we’ll get it right the next time. >> >> Martin, Jim, Joel – any thoughts and guidance from your end, on >> whether the document should be handed back to the working group? >> >> Thanks again, Frank >> >> *From:*Christian Huitema >> *Sent:* Saturday, 25 September 2021 16:42 >> *To:* Frank Brockners (fbrockne) ; secdir@ietf.org >> *Cc:* shwetha.bhandari@gmail.com; last-call@ietf.org; Youell, Stephen >> ; sfc@ietf.org; >> draft-ietf-sfc-proof-of-transit.all@ietf.org; krishna.sashank@gmail.com >> *Subject:* Re: [Last-Call] Secdir last call review of >> draft-ietf-sfc-proof-of-transit-08 >> >> On 9/25/2021 4:20 AM, Frank Brockners (fbrockne) wrote: >> >> Hi Christian, >> >> Thanks for the follow-up. Please see below. >> >> -----Original Message----- >> >> From: Christian Huitema >> >> >> Sent: Friday, 24 September 2021 17:16 >> >> To: Frank Brockners (fbrockne) >> ;secdir@ietf.org >> >> Cc:shwetha.bhandari@gmail.com >> ;last-call@ietf.org >> ; Youell, Stephen >> >> >> ;sfc@ietf.org >> ; draft-ietf-sfc-proof-of- >> >> transit.all@ietf.org >> ;krishna.sashank@gmail.com >> >> >> Subject: Re: [Last-Call] Secdir last call review of >> draft-ietf-sfc-proof-of-transit- >> >> 08 >> >> On 9/24/2021 1:39 AM, Frank Brockners (fbrockne) wrote: >> >> Hi Christian, >> >> Thanks a lot for the detailed follow-up. Please see inline. >> >> -----Original Message----- >> >> From: Christian Huitema >> >> >> Sent: Thursday, 23 September 2021 22:13 >> >> To: Frank Brockners (fbrockne) >> ;secdir@ietf.org >> >> Cc:shwetha.bhandari@gmail.com >> ;last-call@ietf.org >> ; Youell, Stephen >> >> >> ;sfc@ietf.org >> ; draft-ietf-sfc-proof-of- >> >> transit.all@ietf.org >> >> Subject: Re: [Last-Call] Secdir last call review of >> >> draft-ietf-sfc-proof-of-transit- >> >> 08 >> >> On 9/23/2021 12:31 PM, Frank Brockners (fbrockne) wrote: >> >> Hi Christian, >> >> Thanks a lot for your detailed review. Please see >> inline. >> >> -----Original Message----- >> >> From: Christian Huitema via >> Datatracker >> >> Sent: Monday, 20 September 2021 05:48 >> >> To:secdir@ietf.org >> >> >> Cc:draft-ietf-sfc-proof-of-transit.all@ietf.org >> ; >> >> last-call@ietf.org >> ;sfc@ietf.org >> >> Subject: Secdir last call review of >> >> draft-ietf-sfc-proof-of-transit-08 >> >> Reviewer: Christian Huitema >> >> Review result: Serious Issues >> >> I have reviewed this document as part of the >> security directorate's >> >> ongoing effort to review all IETF documents >> being processed by the >> >> IESG. These comments were written primarily >> for the benefit of the >> >> security >> >> area directors. >> >> Document editors and WG chairs should treat >> these comments just >> >> like any other last call comments. >> >> This document proposes a security mechanism to >> prove that traffic >> >> transited through all specified nodes in a >> path. The mechanism >> >> works by adding a short option to each packet >> for which transit >> >> shall be verified. The option consists of a >> random number set by >> >> the originator of the packet, and a sum field >> to which each transit >> >> node adds a value depending on public >> parameters, on the random >> >> number and on secrets held by the node. The >> destination has access >> >> to all the secrets held by the nodes on the >> path, and can verify >> >> whether or not the final sum corresponds to >> the sum of expected >> >> values. The proposed size >> >> of the random number and the sum field is 64 bits. >> >> In the paragraph above, I described the >> mechanism without >> >> mentioning the algorithm used to compute these >> 64 bit numbers. The >> >> 64 bit size is obviously a >> >> concern: for cryptographic applications, 64 >> bits is not a large >> >> number, and that might be a weakness whatever >> the proposed algorithm. >> >> The actual algorithm appears to be a bespoke >> derivation of Shamir's >> >> Secret Sharing algorithm (SSS). In other word, >> it is a case of >> >> "inventing your >> >> own crypto". >> >> ...FB: SSS is a well know algorithm and >> >> draft-ietf-sfc-proof-of-transit does not >> >> modify it. >> >> All draft-ietf-sfc-proof-of-transit does is to >> operationalize the >> >> SSS algorithm >> >> for the proof of transit use case. >> >> Also note that the draft does not require the use >> of 64 bit numbers. >> >> Nor does draft require a minimum time between >> changing the secrets. >> >> What particular attack are you concerned about >> where 64 bit numbers >> >> are a >> >> concern? >> >> SSS relies on the representation of >> polynomials as a sum of >> >> Lagrange Basis Polynomials. Each of the >> participating nodes holds a >> >> share of the secret represented by a point on >> the polynomial curve. >> >> A polynomial of degree K on the field of >> integers modulo a prime >> >> number N can only be revealed if at list K+1 >> participants reveal >> >> the value of their point. The safety of the >> algorithm relies on the >> >> size of the number N and on the fact that the >> secret shall be revealed only >> >> once. >> >> But the algorithm does not use SSS directly, >> so it deserves its own >> >> security >> >> analysis instead of relying simply on Shamir's work. >> >> The proposed algorithm uses two polynomials of >> degree K for a path >> >> containing >> >> K+1 nodes, on a field defined by a prime >> number N of 64 bits. One >> >> K+of the >> >> polynomial, POLY-1, is secret, and only fully >> known by the verifying node. >> >> The other, POLY-2 is public, with the constant >> coefficient set at a >> >> random value RND for each packet. >> >> For each packet, the goal is compute the value >> of POLY-1 plus >> >> POLY-2 at the point 0 -- that is, the constant >> coefficient of >> >> POLY-3 = POLY-1 + POLY- >> >> 2. >> >> Without going in too much details, one can >> observe that the >> >> constant coefficient of POLY-3 is equal to the >> sum of the constant >> >> coefficients of POLY-1 and POLY-2, and that >> the constant >> >> coefficient of POLY-2 is the value RND present >> in each packet. In >> >> the example given in section 3.3.2, the >> numbers are computed modulo >> >> 53, the constant coefficient of POLY-1 is 10, >> and the value RND is >> >> 45. The final sum CML is indeed >> >> 10 + 45 = 2 mod 53. >> >> To me, this appears as a serious weakness in >> the algorithm. If an >> >> adversary can observe the value RND and CML >> for a first packet, it >> >> can retrieve the constant coefficient of >> POLY-1, and thus can >> >> predict the value of CML for any other packet. >> That does not seem very >> >> secure. >> >> ...FB: There seems to be a bit of confusion or >> misreading of how the >> >> method >> >> works. In the above statement you seem to assume that >> the verifier >> >> would not be part of the proof-chain, so that the >> final CML value >> >> would be somehow exposed to an external entity along >> with RND. This >> >> is not the case. The verifier is the last node (k+1) >> in the proof-chain. >> >> At concept level, the method reconstructs the >> polynomial hop by hop, >> >> picking >> >> up a point on the curve at every hop. Only final node >> in the >> >> proof-chain, which is also the verifier, acts on the >> information of >> >> all the k+1 points and as such is able to reconstruct >> the polynomial. >> >> In section 3.2.1, the draft explicitly states that >> the verifier *is* >> >> part of the >> >> proof-chain: "Each of the k+1 nodes (including >> verifier) are assigned >> >> a point on the polynomial i.e., shares of the SECRET." >> The fact that >> >> the verifier, i.e., the last node in the proof-chain >> ("k+1"), can >> >> retrieve the secret, is desired and intentional, >> because the verifier >> >> needs to compare the result of the iterative >> construction of the secret with >> >> the secret value it received from the controller. >> >> This is how the system is designed, and the >> calculation of (10+45) >> >> mod 53 = 2 is part of the verification. >> >> OK. That's slightly less bad. But it is still very bad >> crypto, >> >> because you are effectively doing a linear combination. >> >> You are evaluating POLY-3 = POLY-1 + POLY-2 >> >> POLY-2 can be written as POLY-2 = RND + POLY-2-NC, in >> which POLY2-NC >> >> only contains the non constant terms -- that is, >> POLY-2-NC(0) = 0 >> >> Then for any point X, we get POLY-3(X) = POLY-1(X) + >> POLY2-NC(X) + >> >> RND For a given value Xj of X, this means we can >> express : POLY-3(Xj) >> >> = Vj + RND In which Vj is a constant term = POLY-1(Xj) >> + POLY2-NC(Xj) >> >> Each node will increment the cumul by the value LPCj * >> POLY-3(Xj) = >> >> LPCj >> >> * (Vj + RND) >> >> Suppose that an adversary can observe the value of CML >> before and >> >> after being incremented by node Xj. Suppose that it >> could do that >> >> twice. Then it has the >> >> values: >> >> CML1-before-j = C1b >> >> CML1-after-j = C1a >> >> D1 = C1a - C1b = LPCj * (Vj + RND1) >> >> CML1-before-j = C2b >> >> CML1-after-j = C2a >> >> D2 = C2a - C2b = LPCj * (Vj + RND2) >> >> D2-D1 = LPCj*(RND2-RND1) >> >> LPCj = (RND2-RND1)/(D2-D1) >> >> Vj = D2/LPCj - RND2 >> >> The inverse of numbers modulo a prime P is easily >> computed -- see >> >> Fermat's little theorem. >> >> Once the input and output of a node have been observed >> twice, it >> >> becomes easy to update the cumulative sum CML while >> bypassing these >> >> nodes. >> >> ...FB: This is great. Thanks for spelling out the >> details. You raise a good point: >> >> For the solution to make sense, we need to ensure that an >> attacker cannot >> >> observe the input and output of a node. >> >> To ensure this does not happen, we must require the >> communication to/from >> >> the node to be encrypted, e.g., through link layer encryption >> of at least the >> >> proof-of-transit data fields. >> >> We'll add this requirement to the draft - and also detail >> the threat you describe >> >> above in detail in the security considerations section. >> >> That still will not be sufficient, because you also have to >> deal with the nodes >> >> themselves. By definition, they see the intermediate results >> of other nodes. For >> >> example, if the function chain is A->B->C->D->E, the node B >> sees the output of B >> >> and the node D sees the input of D. If B and D collude, they >> have access to the >> >> input and output of C. They can easily find the secrets of C, >> and then execute a >> >> chain A->B---->D->E in which the input of D is "corrected" to >> hide the absence of >> >> C from the evaluator E. >> >> Thanks much. You raise another valid point and we will add it to >> the security considerations section. >> >> That said, IMHO we'd need to put the scenario you raise into >> perspective: >> >> If the nodes B and D would be compromised by an attacker, the >> deployment would face a much more serious security issue than what any >> proof-of-transit method could protect against. >> >> The linear combination scheme in the draft is not sound >> crypto. My >> >> recommendation is to present the problem and the threat model >> clearly to the >> >> crypto community, for example by presenting to the CFRG, and >> solicit advice on >> >> better algorithms. >> >> There has been quite a bit of discussion on proof of transit in >> several WGs, even before the SFC WG picked it up. And the SFC working >> group has considered different approaches early on in the solution >> specification, including e.g., using nested encryption, which is >> probably more in line with your preferences. >> Seehttps://datatracker.ietf.org/doc/html/draft-ietf-sfc-proof-of-transit-01#section-3.5.1 >> . >> From my recollection of the discussion - others please chime in - one >> main reason of why the current approach was chosen was its >> computational simplicity, i.e., hardware platforms which do not >> support native encryption capabilities like AES-NI can implement it >> without considerable impact on the computational latency. So in other >> words, the current method is the result of a trade-off decision. >> >> We are discussing mathematics, not opinions. It is not a matter of >> preferences, it is a matter of threat model. The draft that I reviewed >> does not mention that the scheme should only be used in a benign >> environment in which no attacker can see the traffic and all nodes are >> fully trusted to not try gaming the system. The proposed scheme uses >> crypto vocabulary, with references to SSS and use of terms like >> "proof" or "cryptanalysis". Indeed, the header paragraph of the >> security considerations says: >> >> POT is a mechanism that is used for verifying the path through which >> >> a packet was forwarded. The security considerations of IOAM in >> >> general are discussed in [I-D.ietf-ippm-ioam-data]. Specifically, it >> >> is assumed that POT is used in a confined network domain, and >> >> therefore the potential threats that POT is intended to mitigate >> >> should be viewed accordingly. POT prevents spoofing and tampering; >> >> an attacker cannot maliciously create a bogus POT or modify a >> >> legitimate one. Furthermore, a legitimate node that takes part in >> >> the POT protocol cannot masquerade as another node along the path. >> >> These considerations are discussed in detail in the rest of this >> >> section. >> >> The previous discussions have shown that an attacker CAN "maliciously >> create a bogus POT or modify a legitimate one", provided it is able to >> see the traffic, or some of the traffic. The discussions also show >> that "a legitimate node that takes part in the POT protocol" CAN >> "masquerade as another node along the path". Contrary to statements in >> the "cryptanalysis" section, "A passive attacker observing CML values >> across nodes (i.e., as the packets entering and leaving)" CAN >> "perform differential analysis". The attack cannot "be mitigated using >> a good PRNG for generating RND". >> >> If the system was only designed for operation in a "benign >> environment" and you were only concerned with detecting operation >> failures, I am pretty sure that you could come out with something less >> complicated. For example you could exploit the analysis that I made to >> radically simplify the implementation and describe the scheme as "CML >> = Sum (Xj*RNDp)", where Xj is a secret coefficient provisioned to node >> j, and RNPp is per packet random number. The verification by the >> evaluator will check that "RND == CML + Xe*RND", where "Xe = 1 - Sum >> Xj". That would get you an easy-to-implement checksum. But you would >> need to be very clear about the domain of application, and the failure >> mode if the traffic can be observed or nodes can be compromised, and >> the draft should probably drop the references to Shamir's SSS, because >> they just obfuscate the analysis. >> >> -- Christian Huitema >> > From nobody Tue Oct 19 08:42:48 2021 Return-Path: X-Original-To: sfc@ietfa.amsl.com Delivered-To: sfc@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 76D1F3A003F; Tue, 19 Oct 2021 08:42:46 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.098 X-Spam-Level: X-Spam-Status: No, score=-2.098 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] 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 GDG-bibgNnHj; Tue, 19 Oct 2021 08:42:42 -0700 (PDT) Received: from mail-ed1-x52f.google.com (mail-ed1-x52f.google.com [IPv6:2a00:1450:4864:20::52f]) (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 9A54D3A0C29; Tue, 19 Oct 2021 08:42:41 -0700 (PDT) Received: by mail-ed1-x52f.google.com with SMTP id i20so14346943edj.10; Tue, 19 Oct 2021 08:42:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=hCh9m4VBnZAxeTjbYwpbPnfJN8s/5UXUCzjtTCKb69g=; b=qPRqGyDlaJQnv7PDWlfEl1mUALTisxOkdOfQkLPzyynjDaN1Jz43UoLQeUi3oLb0th c1J46l2S41xfB0nxwVPpWo2mopVkIEHrzIBsrDKyIY32TIkb5JtJgQF0P3fe9+JtQ7Gp z7ZsXn2sC7FFShGjepesD9X1bT1zvRpQhbIEhLDA6F8DgKd0re4aeqFMEpWk2+/0esXK 5YSF79qbIb+MMpV2VrRoyQoraSMoUEW0SGJQuJXQHp504bXtFEOkI7e+WLywB+6cnz1+ mauVlAtk+s13qURKTGWEhC+bmlJ153ySibqYENFsL5unEDN+lzzGNUH1o0stq/nBl59w Q8TA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=hCh9m4VBnZAxeTjbYwpbPnfJN8s/5UXUCzjtTCKb69g=; b=KwXkJ+jxc98c/RDDyAB80ibidhZI6/Z6vyvjGeaH/X1Ee/sKmH3EJX7kEAOmefD0Sa Ra4+Maz76VgbV3MVhHO3xXa4ZzAnWaS/vWS8d4fIPx74CAaG08pyGaKjpw5N1QTsl0+j jOnrV0V2pPEsOx5oA7Jxs8Zr8Fw+slZXUeTOqgFV1j0cOF/8iYUgXT3hdXbUHH6SxEof AtnPwVtG4T2DyN3Vh5kHhKssknxcUVbKaTeZ1z6ImA17XX9nDIwSku7OXN04Q/gxRFx8 ggy9glquNwVZeJOjuS6H6z6Rfgw82BULizpF6KcRsmeUaHbAnp3NOaoq/b93x08jcAtJ j6wg== X-Gm-Message-State: AOAM531K8pI1NowVMqImoPANdEt6kpxyEvsLt6Sfaml2WmP8DeFS79gq 2FYdKgn9zFTC/dK8EnxJk+e1tUvwOISf+9WL+4dtHvvo X-Google-Smtp-Source: ABdhPJxr/cX+x2aRFFdoeFfRBGfIeS/9gaurYzOCVYKmfKa8zFYT+zfpKu4wB47dggWKiUsvUJM8x+/gd5J0L+j125k= X-Received: by 2002:a50:ec14:: with SMTP id g20mr4531877edr.100.1634658011142; Tue, 19 Oct 2021 08:40:11 -0700 (PDT) MIME-Version: 1.0 References: <163370962115.18283.9043697369207976285@ietfa.amsl.com> <10112_1634136890_6166F33A_10112_380_1_787AE7BB302AE849A7480A190F8B93303542B55C@OPEXCAUBMA2.corporate.adroot.infra.ftgroup> <11909_1634317047_6169B2F7_11909_25_1_787AE7BB302AE849A7480A190F8B93303542CC72@OPEXCAUBMA2.corporate.adroot.infra.ftgroup> <8945_1634534769_616D0571_8945_291_1_787AE7BB302AE849A7480A190F8B93303542D7FE@OPEXCAUBMA2.corporate.adroot.infra.ftgroup> <11071_1634625838_616E692E_11071_167_1_787AE7BB302AE849A7480A190F8B93303542E5C6@OPEXCAUBMA2.corporate.adroot.infra.ftgroup> In-Reply-To: <11071_1634625838_616E692E_11071_167_1_787AE7BB302AE849A7480A190F8B93303542E5C6@OPEXCAUBMA2.corporate.adroot.infra.ftgroup> From: Greg Mirsky Date: Tue, 19 Oct 2021 08:39:59 -0700 Message-ID: To: Med Boucadair Cc: "sfc-chairs@ietf.org" , Service Function Chaining IETF list Content-Type: multipart/alternative; boundary="000000000000155dc205ceb67a83" Archived-At: Subject: Re: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-oam-14.txt X-BeenThere: sfc@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Network Service Chaining List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Oct 2021 15:42:47 -0000 --000000000000155dc205ceb67a83 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Med, thank you for your quick response and helpful suggestion. I'll add the text on rate-limiting. Regards, Greg On Mon, Oct 18, 2021 at 11:43 PM wrote: > Hi Greg, > > > > This is better, thanks. > > > > Given that you indicate that a notification MUST be sent, you may conside= r > adding a sentence to basically say that the notification SHOULD be > rate-limited. > > > > Cheers, > > Med > > > > *De :* sfc *De la part de* Greg Mirsky > *Envoy=C3=A9 :* lundi 18 octobre 2021 18:15 > *=C3=80 :* BOUCADAIR Mohamed INNOV/NET > *Cc :* sfc-chairs@ietf.org; Service Function Chaining IETF list < > sfc@ietf.org> > *Objet :* Re: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-oam-14.tx= t > > > > Hi Med, > > thank you for pointing that out to me. Attached is the diff highlighting > the proposed update. I greatly appreciate your feedback on the proposed > change. > > > > Regards, > > Greg > > > > On Sun, Oct 17, 2021 at 10:26 PM wrote: > > Hi Greg, > > > > Thank you. > > > > There is still one statement that was not removed, though: > > > > (6.6.1): > > > > The initiator of CVReq MAY require the collected information in the > > CVRep be sent in the integrity-protected mode using the MAC Context > > Header, defined in [I-D.ietf-sfc-nsh-integrity]. > > > > Cheers, > > Med > > > > *De :* sfc *De la part de* Greg Mirsky > *Envoy=C3=A9 :* vendredi 15 octobre 2021 22:13 > *=C3=80 :* BOUCADAIR Mohamed INNOV/NET > *Cc :* sfc-chairs@ietf.org; Service Function Chaining IETF list < > sfc@ietf.org> > *Objet :* Re: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-oam-14.tx= t > > > > Hi Med, > > thank you for your quick response. I've modified the text according to > your suggestions and uploaded the new version. > > > > Regards, > > Greg > > > > On Fri, Oct 15, 2021 at 9:57 AM wrote: > > Hi Greg, > > > > Please see inline. > > > > Cheers, > > Med > > > > *De :* Greg Mirsky > *Envoy=C3=A9 :* vendredi 15 octobre 2021 18:06 > *=C3=80 :* BOUCADAIR Mohamed INNOV/NET > *Cc :* Service Function Chaining IETF list ; > sfc-chairs@ietf.org > *Objet :* Re: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-oam-14.tx= t > > > > Hi Med, > > thank you for your review and comments. Please find my notes in-lined > below tagged by GIM>>. > > > > Regards, > > Greg > > > > On Wed, Oct 13, 2021 at 7:54 AM wrote: > > Hi Greg, all, > > > > Please find below some quick comments about this version: > > > > (1) > > > > =E2=80=9CWhile SFC Echo Request always traverses the SFP, it is directed = to, > > the corresponding Echo Reply usually is sent over an IP network.=E2=80=9D > > > > I=E2=80=99m not sure to get the intent here, especially that an SFP is st= ill =E2=80=9Cover > an IP network=E2=80=9D. > > GIM>> We are pointing out that the Echo Request traverses SFP using NSH > while the Echo Reply is not. Do you think that explicitly referring to th= e > role of NSH helps to make it clearer: > > OLD TEXT: > > While SFC Echo Request always traverses the SFP, it is directed to, > > the corresponding Echo Reply usually is sent over an IP network. > > NEW TEXT: > > While SFC Echo Request always traverses the SFP, it is directed to, > > using NSH, the corresponding Echo Reply usually is sent over an IP > > network without NSH. > > > > *[Med] I would just delete =E2=80=9Cover an IP network=E2=80=9D from the = NEW text. Thanks. > * > > > > > > I have the same concern with this one: > > > > =E2=80=9CThere are scenarios when it is beneficial to direct the responde= r to > > use a path other than the IP network=E2=80=9C > > GIM>> Would the following update make it clearer: > > OLD TEXT: > > There are scenarios when it is beneficial to direct the responder to > > use a path other than the IP network. > > NEW TEXT: > > In some cases, an operator might choose to direct the responder > > to send the Echo Reply with NSH over a particular SFP. > > > > *[Med] This is better, thanks. * > > > > (2) You may want align these two statements to avoid what may be perceive= d > as an internal inconsistency (or redundant requirements): > > > > The Message Authentication Code (MAC) Context Header that is > defined > > in [I-D.ietf-sfc-nsh-integrity] MAY be used to protect the SFC > Echo > > Request's integrity when using the SFC Return Path TLV > > > > vs. > > > > When the integrity protection for SFC active OAM, and SFC Echo > > Request/Reply in particular, is required, it is RECOMMENDED to use > > one of the Context Headers defined in [I-D.ietf-sfc-nsh-integrity]. > > GIM>> Thank you for catching this inconsistency. Would you agree that > s/MAY/SHOULD/ resolves it? > > *[Med] Yes=E2=80=A6 but I would just maintain the one in the Security > Considerations Section. * > > > > Cheers, > > Med > > > > *De :* sfc *De la part de* Greg Mirsky > *Envoy=C3=A9 :* vendredi 8 octobre 2021 18:19 > *=C3=80 :* Service Function Chaining IETF list ; > sfc-chairs@ietf.org > *Objet :* [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-oam-14.txt > > > > Dear All, > > following the discussion on the SFC WG mailing list and the direction fro= m > the SFC WG Chairs, we've merged substantive parts > of draft-ao-sfc-oam-path-consistency > and draft-ao-sfc-oam-return-path-specified with this draft where the base > functionality of the SFC NSH Echo Request/Reply is defined. The authors > greatly appreciate and welcome your comments, questions, and suggestions. > We're looking forward to the discussion that will help to progress this > document to the WG LC. > > > > Regards, > > Greg (on behalf of the authors). > > ---------- Forwarded message --------- > From: > Date: Fri, Oct 8, 2021 at 9:13 AM > Subject: [sfc] I-D Action: draft-ietf-sfc-multi-layer-oam-14.txt > To: > Cc: > > > > > A New Internet-Draft is available from the on-line Internet-Drafts > directories. > This draft is a work item of the Service Function Chaining WG of the IETF= . > > Title : Active OAM for Service Function Chaining > Authors : Greg Mirsky > Wei Meng > Ting Ao > Kent Leung > Gyan Mishra > Filename : draft-ietf-sfc-multi-layer-oam-14.txt > Pages : 37 > Date : 2021-10-08 > > Abstract: > A set of requirements for active Operation, Administration, and > Maintenance (OAM) of Service Function Chains (SFCs) in a network is > presented in this document. Based on these requirements, an > encapsulation of active OAM messages in SFC and a mechanism to detect > and localize defects are described. > > This document updates RFC 8300. Particularly, it updates the > definition of O (OAM) bit in the Network Service Header (NSH) (RFC > 8300) and defines how an active OAM message is identified in the NSH. > > > The IETF datatracker status page for this draft is: > https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/ > > There is also an HTML version available at: > https://www.ietf.org/archive/id/draft-ietf-sfc-multi-layer-oam-14.html > > A diff from the previous version is available at: > https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-sfc-multi-layer-oam-14 > > > Internet-Drafts are also available by anonymous FTP at: > ftp://ftp.ietf.org/internet-drafts/ > > > _______________________________________________ > sfc mailing list > sfc@ietf.org > https://www.ietf.org/mailman/listinfo/sfc > > _________________________________________________________________________= ________________________________________________ > > > > Ce message et ses pieces jointes peuvent contenir des informations confid= entielles ou privilegiees et ne doivent donc > > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez re= cu ce message par erreur, veuillez le signaler > > a l'expediteur et le detruire ainsi que les pieces jointes. Les messages = electroniques etant susceptibles d'alteration, > > Orange decline toute responsabilite si ce message a ete altere, deforme o= u falsifie. Merci. > > > > This message and its attachments may contain confidential or privileged i= nformation that may be protected by law; > > they should not be distributed, used or copied without authorisation. > > If you have received this email in error, please notify the sender and de= lete this message and its attachments. > > As emails may be altered, Orange is not liable for messages that have bee= n modified, changed or falsified. > > Thank you. > > _________________________________________________________________________= ________________________________________________ > > > > Ce message et ses pieces jointes peuvent contenir des informations confid= entielles ou privilegiees et ne doivent donc > > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez re= cu ce message par erreur, veuillez le signaler > > a l'expediteur et le detruire ainsi que les pieces jointes. Les messages = electroniques etant susceptibles d'alteration, > > Orange decline toute responsabilite si ce message a ete altere, deforme o= u falsifie. Merci. > > > > This message and its attachments may contain confidential or privileged i= nformation that may be protected by law; > > they should not be distributed, used or copied without authorisation. > > If you have received this email in error, please notify the sender and de= lete this message and its attachments. > > As emails may be altered, Orange is not liable for messages that have bee= n modified, changed or falsified. > > Thank you. > > _________________________________________________________________________= ________________________________________________ > > > > Ce message et ses pieces jointes peuvent contenir des informations confid= entielles ou privilegiees et ne doivent donc > > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez re= cu ce message par erreur, veuillez le signaler > > a l'expediteur et le detruire ainsi que les pieces jointes. Les messages = electroniques etant susceptibles d'alteration, > > Orange decline toute responsabilite si ce message a ete altere, deforme o= u falsifie. Merci. > > > > This message and its attachments may contain confidential or privileged i= nformation that may be protected by law; > > they should not be distributed, used or copied without authorisation. > > If you have received this email in error, please notify the sender and de= lete this message and its attachments. > > As emails may be altered, Orange is not liable for messages that have bee= n modified, changed or falsified. > > Thank you. > > _________________________________________________________________________= ________________________________________________ > > Ce message et ses pieces jointes peuvent contenir des informations confid= entielles ou privilegiees et ne doivent donc > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez re= cu ce message par erreur, veuillez le signaler > a l'expediteur et le detruire ainsi que les pieces jointes. Les messages = electroniques etant susceptibles d'alteration, > Orange decline toute responsabilite si ce message a ete altere, deforme o= u falsifie. Merci. > > This message and its attachments may contain confidential or privileged i= nformation that may be protected by law; > they should not be distributed, used or copied without authorisation. > If you have received this email in error, please notify the sender and de= lete this message and its attachments. > As emails may be altered, Orange is not liable for messages that have bee= n modified, changed or falsified. > Thank you. > > --000000000000155dc205ceb67a83 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Hi Med,

thank you for your quick response and helpful = suggestion. I'll add the text on rate-limiting.

Regards,

Greg

On Mon, Oct 18, 2021 at 11:43 PM <mohamed.boucadair@orange.com&g= t; wrote:

Hi Greg,

=C2=A0

This is better, thanks.

=C2=A0

Given that you indicate that a notification M= UST be sent, you may consider adding a sentence to basically say that the n= otification SHOULD be rate-limited.

=C2=A0

Cheers,

Med

=C2=A0

De=C2=A0: sfc <sfc-bounces@ietf.org> De la part d= e Greg Mirsky
Envoy=C3=A9=C2=A0: lundi 18 octobre 2021 18:15
=C3=80=C2=A0: BOUCADAIR Mohamed INNOV/NET <mohamed.boucadair@orange.com>
Cc=C2=A0: s= fc-chairs@ietf.org; Service Function Chaining IETF list <sfc@ietf.org>
Objet=C2=A0: Re: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-o= am-14.txt

=C2=A0

Hi Med,

thank you for pointing that out to me. Attached is t= he diff highlighting the=C2=A0proposed update. I greatly appreciate your fe= edback on the proposed change.

=C2=A0

Regards,

Greg

=C2=A0

On Sun, Oct 17, 2021 at 10:26 PM <mohamed.boucadair@orange= .com> wrote:

Hi Greg,

=C2=A0

Thank you.

=C2=A0

There is still one statement that was not rem= oved, though:

=C2=A0

(6.6.1):

=C2=A0

=C2=A0=C2=A0 The initiator of CVReq MAY requi= re the collected information in the

=C2=A0=C2=A0 CVRep be sent in the integrity-p= rotected mode using the MAC Context

=C2=A0=C2=A0 Header, defined in [I-D.ietf-sfc= -nsh-integrity].

=C2=A0

Cheers,

Med

=C2=A0

De=C2=A0: sfc <sfc-bounces@ietf.org> De la part de Greg Mirsky
Envoy=C3=A9=C2=A0: vendredi 15 octobre 2021 22:13
=C3=80=C2=A0: BOUCADAIR Mohamed INNOV/NET <mohamed.boucadair@orange.com>
Cc=C2=A0: s= fc-chairs@ietf.org; Service Function Chaining IETF list <sfc@ietf.org>
Objet=C2=A0: Re: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-o= am-14.txt

=C2=A0

Hi Med,

thank you for your quick response. I've modified= the text according to your suggestions and uploaded the new version.

=C2=A0

Regards,

Greg

=C2=A0

On Fri, Oct 15, 2021 at 9:57 AM <mohamed.boucadair@orange.= com> wrote:

Hi Greg,

=C2=A0

Please see inline.

=C2=A0

Cheers,

Med

=C2=A0

De=C2=A0: Greg Mirsky <gregimirsky@gmail.com>
Envoy=C3=A9=C2=A0: vendredi 15 octobre 2021 18:06
=C3=80=C2=A0: BOUCADAIR Mohamed INNOV/NET <mohamed.boucadair@orange.com>
Cc=C2=A0: Service Function Chaining IETF list <sfc@ietf.org>; sfc-chairs@ietf.or= g
Objet=C2=A0: Re: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-o= am-14.txt

=C2=A0

Hi Med,

thank you for your review and comments. Please find = my notes in-lined below tagged by GIM>>.

=C2=A0

Regards,

Greg

=C2=A0

On Wed, Oct 13, 2021 at 7:54 AM <mohamed.boucadair@orange.= com> wrote:

Hi Greg, all,

=C2=A0

Please find below some quick comments about t= his version:

=C2=A0

(1)

=C2=A0

=E2=80=9CWhile SFC Echo Request always traver= ses the SFP, it is directed to,=C2=A0=C2=A0

the corresponding Echo Reply usually is sent = over an IP network.=E2=80=9D

=C2=A0

I=E2=80=99m not sure to get the intent here, = especially that an SFP is still =E2=80=9Cover an IP network=E2=80=9D.

GIM>> We are pointing out that the Echo Reques= t traverses SFP using NSH while the Echo Reply is not. Do you think that ex= plicitly referring=C2=A0to the role of NSH helps to make it clearer:=

OLD TEXT:

=C2=A0 =C2=A0While SFC Echo Request always traverses= the SFP, it is directed to,

=C2=A0 =C2=A0the corresponding Echo Reply usually is= sent over an IP network.

NEW TEXT:

=C2=A0 =C2=A0While SFC Echo Request always traverses= the SFP, it is directed to,

=C2=A0 =C2=A0using NSH, the corresponding Echo Reply= usually is sent over an IP

=C2=A0 =C2=A0network without NSH.

=C2=A0

[Med] I would just delete =E2=80=9Cover= an IP network=E2=80=9D from the NEW text. Thanks.

=C2=A0

=C2=A0

I have the same concern with this one:

=C2=A0

=E2=80=9CThere are scenarios when it is benef= icial to direct the responder to=C2=A0

use a path other than the IP network=E2=80=9C=

GIM>> Would the following update make it clear= er:

OLD TEXT:

=C2=A0 =C2=A0There are scenarios when it is benefici= al to direct the responder to

=C2=A0 =C2=A0use a path other than the IP network.= =C2=A0

NEW TEXT:

=C2=A0 =C2=A0In some cases, an operator might choose= to direct the responder

=C2=A0 =C2=A0to send the Echo Reply with NSH over a = particular SFP.

=C2=A0

[Med] This is better, thanks.

=C2=A0

(2) You may want align these two statements t= o avoid what may be perceived as an internal inconsistency (or redundant requirements):

=C2=A0

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 The Message Au= thentication Code (MAC) Context Header that is defined=C2=A0

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 in [I-D.ietf-s= fc-nsh-integrity] MAY be used to protect the SFC Echo=C2=A0=C2=A0

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Request's = integrity when using the SFC Return Path TLV

=C2=A0

vs.

=C2=A0

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 When the integ= rity protection for SFC active OAM, and SFC Echo

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Request/Reply = in particular, is required, it is RECOMMENDED to use

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 one of the Con= text Headers defined in [I-D.ietf-sfc-nsh-integrity].<= /p>

GIM>> Thank you for catching this inconsistenc= y. Would you agree that s/MAY/SHOULD/ resolves it?=C2=A0

[Med] Yes=E2=80=A6 but I would just mai= ntain the one in the Security Considerations Section. =C2=A0=

=C2=A0

Cheers,

Med

=C2=A0

De=C2=A0: sfc <sfc-bounces@ietf.org> De la part de Greg Mirsky
Envoy=C3=A9=C2=A0: vendredi 8 octobre 2021 18:19
=C3=80=C2=A0: Service Function Chaining IETF list <sfc@ietf.org>; sfc-chairs@ietf.or= g
Objet=C2=A0: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-oam-1= 4.txt

=C2=A0

Dear All,

following the discussion on the SFC WG mailing list = and the direction from the SFC WG Chairs, we've merged substantive part= s of=C2=A0draft-ao-sfc-oam-path-consistency and=C2=A0draft-ao-sfc-oam-retur= n-path-specified with this draft where the base functionality of the SFC NSH Echo Request/R= eply is defined. The authors greatly appreciate and welcome your comments, = questions, and suggestions. We're looking forward to the discussion tha= t will help to progress this document to the WG LC.

=C2=A0

Regards,

Greg (on behalf of the = authors).

---------- Forwarded message ---------
From: <int= ernet-drafts@ietf.org>
Date: Fri, Oct 8, 2021 at 9:13 AM
Subject: [sfc] I-D Action: draft-ietf-sfc-multi-layer-oam-14.txt
To: <i-d-anno= unce@ietf.org>
Cc: <sfc@ietf.org&= gt;

A New Internet-Draft is available from the on-line Internet-Drafts director= ies.
This draft is a work item of the Service Function Chaining WG of the IETF.<= br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Title=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:= Active OAM for Service Function Chaining
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Authors=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: Greg= Mirsky
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Wei Meng
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Ting Ao
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Kent Leung
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Gyan Mishra
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Filename=C2=A0 =C2=A0 =C2=A0 =C2=A0 : draft-iet= f-sfc-multi-layer-oam-14.txt
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Pages=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:= 37
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Date=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 := 2021-10-08

Abstract:
=C2=A0 =C2=A0A set of requirements for active Operation, Administration, an= d
=C2=A0 =C2=A0Maintenance (OAM) of Service Function Chains (SFCs) in a netwo= rk is
=C2=A0 =C2=A0presented in this document.=C2=A0 Based on these requirements,= an
=C2=A0 =C2=A0encapsulation of active OAM messages in SFC and a mechanism to= detect
=C2=A0 =C2=A0and localize defects are described.

=C2=A0 =C2=A0This document updates RFC 8300.=C2=A0 Particularly, it updates= the
=C2=A0 =C2=A0definition of O (OAM) bit in the Network Service Header (NSH) = (RFC
=C2=A0 =C2=A08300) and defines how an active OAM message is identified in t= he NSH.

The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-l= ayer-oam/

There is also an HTML version available at:
https://www.ietf.org/archive/id/draft-ietf-sfc-mu= lti-layer-oam-14.html

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-sfc= -multi-layer-oam-14

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp= .ietf.org/internet-drafts/

_______________________________________________
sfc mailing list
sfc@ietf.org
htt= ps://www.ietf.org/mailman/listinfo/sfc
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 recu ce message par erreur, veuillez le signaler
a l'expediteur et le detruire ainsi que les pieces jointes. Les me=
ssages electroniques etant susceptibles d'alteration,
Orange decline toute responsabilite si ce message a ete altere, deform=
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This message and its attachments may contain confidential or privilege=
d information that may be protected by law;
they should not be distributed, used or copied without authorisation.<=
u>
If you have received this email in error, please notify the sender and=
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As emails may be altered, Orange is not liable for messages that have =
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Thank you.

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Ce message et ses pieces jointes peuvent contenir des informations con=
fidentielles ou privilegiees et ne doivent donc

pas etre diffuses, exploites ou copies sans autorisation. Si vous avez=
 recu ce message par erreur, veuillez le signaler

a l'expediteur et le detruire ainsi que les pieces jointes. Les me=
ssages electroniques etant susceptibles d'alteration,
Orange decline toute responsabilite si ce message a ete altere, deform=
e ou falsifie. Merci.
=C2=A0
This message and its attachments may contain confidential or privilege=
d information that may be protected by law;
they should not be distributed, used or copied without authorisation.<=
u>
If you have received this email in error, please notify the sender and=
 delete this message and its attachments.
As emails may be altered, Orange is not liable for messages that have =
been modified, changed or falsified.
Thank you.

______________________________________________________________________=
___________________________________________________

=C2=A0

Ce message et ses pieces jointes peuvent contenir des informations con=
fidentielles ou privilegiees et ne doivent donc

pas etre diffuses, exploites ou copies sans autorisation. Si vous avez=
 recu ce message par erreur, veuillez le signaler

a l'expediteur et le detruire ainsi que les pieces jointes. Les me=
ssages electroniques etant susceptibles d'alteration,
Orange decline toute responsabilite si ce message a ete altere, deform=
e ou falsifie. Merci.
=C2=A0
This message and its attachments may contain confidential or privilege=
d information that may be protected by law;
they should not be distributed, used or copied without authorisation.<=
u>
If you have received this email in error, please notify the sender and=
 delete this message and its attachments.
As emails may be altered, Orange is not liable for messages that have =
been modified, changed or falsified.
Thank you.

______________________________________________________________________=
___________________________________________________

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

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

--000000000000155dc205ceb67a83-- From nobody Tue Oct 19 09:32:17 2021 Return-Path: X-Original-To: sfc@ietf.org Delivered-To: sfc@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id A9FC23A0D4A; Tue, 19 Oct 2021 09:32:07 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: sfc@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 7.39.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: sfc@ietf.org Message-ID: <163466112750.7235.4587641153411151399@ietfa.amsl.com> Date: Tue, 19 Oct 2021 09:32:07 -0700 Archived-At: Subject: [sfc] I-D Action: draft-ietf-sfc-multi-layer-oam-16.txt X-BeenThere: sfc@ietf.org X-Mailman-Version: 2.1.29 List-Id: Network Service Chaining List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Oct 2021 16:32:09 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Service Function Chaining WG of the IETF. Title : Active OAM for Service Function Chaining Authors : Greg Mirsky Wei Meng Ting Ao Kent Leung Gyan Mishra Filename : draft-ietf-sfc-multi-layer-oam-16.txt Pages : 37 Date : 2021-10-19 Abstract: A set of requirements for active Operation, Administration, and Maintenance (OAM) of Service Function Chains (SFCs) in a network is presented in this document. Based on these requirements, an encapsulation of active OAM messages in SFC and a mechanism to detect and localize defects are described. This document updates RFC 8300. Particularly, it updates the definition of O (OAM) bit in the Network Service Header (NSH) (RFC 8300) and defines how an active OAM message is identified in the NSH. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/ There is also an HTML version available at: https://www.ietf.org/archive/id/draft-ietf-sfc-multi-layer-oam-16.html A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-sfc-multi-layer-oam-16 Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Tue Oct 19 09:42:13 2021 Return-Path: X-Original-To: sfc@ietfa.amsl.com Delivered-To: sfc@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id DD0EC3A0A70; Tue, 19 Oct 2021 09:42:11 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.098 X-Spam-Level: X-Spam-Status: No, score=-2.098 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] 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 6q7hAfKYxQGQ; Tue, 19 Oct 2021 09:42:09 -0700 (PDT) Received: from mail-ed1-x533.google.com (mail-ed1-x533.google.com [IPv6:2a00:1450:4864:20::533]) (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 A194A3A0A63; Tue, 19 Oct 2021 09:42:08 -0700 (PDT) Received: by mail-ed1-x533.google.com with SMTP id ec8so15380385edb.6; Tue, 19 Oct 2021 09:42:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=OiOPz9n4NBTj8/nDH+MvIbWEOQ5f4isyfAYVGoSt/8g=; b=L0nd5ad58PEAcs/5xAVuhksxhLCle+fPs9OQHJMAG2KGof66snRvb8CEtOFc/Uf3it 4DK84QHNPKZJOp5gua2Dyz/oWWYjP5Th+UKRjTfJraUYuVNHwlH1bXitqP3HrZdZ3dcc Jc0Z9YJSp9y6N9JVzaB0apPgrtnnViTaNdfMFNmD81+xtJ4uZ7g0xAQwguaCCMViLAIy vmrJn0FPYLLGbeIgEuYyCyZIXIpDXWDYS5tNs5Re2FV7u1FPMKYXNnnWLLfSo7KMgHoR vG1qtN64jwbcwIHL0+8ZLT3I/iZAM/gYnPnUSS3YS0zSglQMBcpwXd11LXJDKj1ap7SG YR3w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=OiOPz9n4NBTj8/nDH+MvIbWEOQ5f4isyfAYVGoSt/8g=; b=PmoZm8TMX48HLvSWyvE79zAz71SmwWr/nVH9wz0MCFsjsQPPMHQ7K64K0waeI68W8n IoahpcO11fgJ7hgEg3yGS91P9HUS+XxhaScPxuhwJDED73RfDHMUuxE/Q0R64l6QSwVJ SMy5RQdkxs0zYOTSYXkL7zhK0MkESESZC3M6mkNn2zFor2/MBCjAh0D1m8Cpm4yCSGi8 w5q3NRAr7gFrFeNkDAFkxXqJFyr6b59gsiSg47uHgpwXjf328aqxZP/tCAlypPdJf1zL L5S/LfMl2AFjKQC4Xo+TPsbV4ClaLW94avjnjNsGPiQW0+sgWhdaRf2gOirnoI2wj9bm KRWw== X-Gm-Message-State: AOAM532Tjnx3gl3u82T+YKYHUlMmj4mw82lNi1VJvCst9wLga7oFmIIZ 9kQxiwGtPisSm66kLdeAhuSN9D/EcOWqmUNWWqXx8JPR X-Google-Smtp-Source: ABdhPJxrTLkue+o00Y/jZ3hk3LTXmGPCV4aoiDuhVKuaPxxkJGDTFboVwLZL51QZ792rzIUHn+4vTiXgf8Ndc6Mo4gs= X-Received: by 2002:a05:6402:1356:: with SMTP id y22mr53766935edw.3.1634661561006; Tue, 19 Oct 2021 09:39:21 -0700 (PDT) MIME-Version: 1.0 References: <163466112750.7235.4587641153411151399@ietfa.amsl.com> In-Reply-To: <163466112750.7235.4587641153411151399@ietfa.amsl.com> From: Greg Mirsky Date: Tue, 19 Oct 2021 09:39:09 -0700 Message-ID: To: sfc-chairs@ietf.org, Service Function Chaining IETF list Content-Type: multipart/alternative; boundary="000000000000abfdd205ceb74df7" Archived-At: Subject: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-oam-16.txt X-BeenThere: sfc@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Network Service Chaining List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Oct 2021 16:42:12 -0000 --000000000000abfdd205ceb74df7 Content-Type: text/plain; charset="UTF-8" Dear Jim and Joel, we've completed merging the substantive parts of two SFC OAM drafts. Many thanks to Med for his thorough reviews, thoughtful comments that helped us improve the document. The authors believe that the draft is stable and is ready for the WG LC. We greatly appreciate your consideration of starting the WG LC and are committed to addressing questions and comments. Regards, Greg (on behalf off the authors) ---------- Forwarded message --------- From: Date: Tue, Oct 19, 2021 at 9:33 AM Subject: [sfc] I-D Action: draft-ietf-sfc-multi-layer-oam-16.txt To: Cc: A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Service Function Chaining WG of the IETF. Title : Active OAM for Service Function Chaining Authors : Greg Mirsky Wei Meng Ting Ao Kent Leung Gyan Mishra Filename : draft-ietf-sfc-multi-layer-oam-16.txt Pages : 37 Date : 2021-10-19 Abstract: A set of requirements for active Operation, Administration, and Maintenance (OAM) of Service Function Chains (SFCs) in a network is presented in this document. Based on these requirements, an encapsulation of active OAM messages in SFC and a mechanism to detect and localize defects are described. This document updates RFC 8300. Particularly, it updates the definition of O (OAM) bit in the Network Service Header (NSH) (RFC 8300) and defines how an active OAM message is identified in the NSH. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/ There is also an HTML version available at: https://www.ietf.org/archive/id/draft-ietf-sfc-multi-layer-oam-16.html A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-sfc-multi-layer-oam-16 Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ _______________________________________________ sfc mailing list sfc@ietf.org https://www.ietf.org/mailman/listinfo/sfc --000000000000abfdd205ceb74df7 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Dear Jim and Joel,

we've completed merging the sub= stantive parts of two SFC OAM drafts. Many thanks to Med for his thorough r= eviews, thoughtful comments that helped us improve the document. The author= s believe that the draft is stable and is ready for the WG LC. We greatly a= ppreciate your consideration of starting the WG LC and are committed to add= ressing questions and comments.

Regards,

Greg (on behalf off the authors)

---------- Forwarded message ---------
Fr= om: <inte= rnet-drafts@ietf.org>
Date: Tue, Oct 19, 2021 at 9:33 AMSubject: [sfc] I-D Action: draft-ietf-sfc-multi-layer-oam-16.txt
To: = <i-d-announce@ietf.org><= br>Cc: <sfc@ietf.org>

<= br>

A New Internet-Draft is available from the on-line Internet-Drafts director= ies.
This draft is a work item of the Service Function Chaining WG of the IETF.<= br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Title=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:= Active OAM for Service Function Chaining
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Authors=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: Greg= Mirsky
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Wei Meng
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Ting Ao
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Kent Leung
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 Gyan Mishra
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Filename=C2=A0 =C2=A0 =C2=A0 =C2=A0 : draft-iet= f-sfc-multi-layer-oam-16.txt
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Pages=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:= 37
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Date=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 := 2021-10-19

Abstract:
=C2=A0 =C2=A0A set of requirements for active Operation, Administration, an= d
=C2=A0 =C2=A0Maintenance (OAM) of Service Function Chains (SFCs) in a netwo= rk is
=C2=A0 =C2=A0presented in this document.=C2=A0 Based on these requirements,= an
=C2=A0 =C2=A0encapsulation of active OAM messages in SFC and a mechanism to= detect
=C2=A0 =C2=A0and localize defects are described.

=C2=A0 =C2=A0This document updates RFC 8300.=C2=A0 Particularly, it updates= the
=C2=A0 =C2=A0definition of O (OAM) bit in the Network Service Header (NSH) = (RFC
=C2=A0 =C2=A08300) and defines how an active OAM message is identified in t= he NSH.

The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/dra= ft-ietf-sfc-multi-layer-oam/

There is also an HTML version available at:
https://www.ietf.org/archive/i= d/draft-ietf-sfc-multi-layer-oam-16.html

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?ur= l2=3Ddraft-ietf-sfc-multi-layer-oam-16

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

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

--000000000000abfdd205ceb74df7-- From nobody Tue Oct 19 10:11:15 2021 Return-Path: X-Original-To: sfc@ietfa.amsl.com Delivered-To: sfc@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 4D0913A0E1B for ; Tue, 19 Oct 2021 10:11:13 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.099 X-Spam-Level: X-Spam-Status: No, score=-2.099 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, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=joelhalpern.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 1jz1VQKbZ_Ec for ; Tue, 19 Oct 2021 10:11:07 -0700 (PDT) Received: from mailb2.tigertech.net (mailb2.tigertech.net [208.80.4.154]) (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 CED973A0E19 for ; Tue, 19 Oct 2021 10:11:07 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by mailb2.tigertech.net (Postfix) with ESMTP id 4HYgHv2nfYz1nsm9 for ; Tue, 19 Oct 2021 10:11:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=joelhalpern.com; s=2.tigertech; t=1634663467; bh=LwcIn4zG/LUOgBjJ1/tSBx4e+cypyT12nIiw0bLldf0=; h=Date:Subject:References:To:From:In-Reply-To:From; b=HRqkO7zoWvIpvqQQoVj7YnXy16mK8TxOUwq81ssUpmUAno108ISI876FNY1ZZsfRM Uo3/B+t//rZjvRVrVOlAuaM17HnY0t5Fek0AonjhK8vsdd9NdyngAhHgABbwH/lXrX 32cP/IGSSAPoH/iieTvwM2Twfew7P8HG6gMwMPcg= X-Quarantine-ID: X-Virus-Scanned: Debian amavisd-new at b2.tigertech.net Received: from [192.168.22.111] (50-233-136-230-static.hfc.comcastbusiness.net [50.233.136.230]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by mailb2.tigertech.net (Postfix) with ESMTPSA id 4HYgHt6HlNz1nsHy for ; Tue, 19 Oct 2021 10:11:06 -0700 (PDT) Message-ID: Date: Tue, 19 Oct 2021 13:11:06 -0400 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.2.0 References: <163466338230.28281.15470366888092462486@ietfa.amsl.com> Content-Language: en-US To: "sfc@ietf.org" From: "Joel M. Halpern" In-Reply-To: <163466338230.28281.15470366888092462486@ietfa.amsl.com> X-Forwarded-Message-Id: <163466338230.28281.15470366888092462486@ietfa.amsl.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Archived-At: Subject: [sfc] Fwd: IETF WG state changed for draft-ietf-sfc-multi-layer-oam X-BeenThere: sfc@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Network Service Chaining List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Oct 2021 17:11:14 -0000 This starts the Working Group last call for draft-ietf-sfc-multi-layer-oam. Please see the text below that has been recorded in the datatracker. thank you, Joel -------- Forwarded Message -------- Subject: IETF WG state changed for draft-ietf-sfc-multi-layer-oam Resent-Date: Tue, 19 Oct 2021 10:09:42 -0700 (PDT) Resent-From: alias-bounces@ietf.org Resent-To: jmh@joelhalpern.com, tal.mizrahi.phd@gmail.com, james.n.guichard@futurewei.com Date: Tue, 19 Oct 2021 10:09:42 -0700 From: IETF Secretariat To: draft-ietf-sfc-multi-layer-oam@ietf.org, sfc-chairs@ietf.org The IETF WG state of draft-ietf-sfc-multi-layer-oam has been changed to "In WG Last Call" from "WG Document" by Joel Halpern: https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/ Comment: This document has been discussed in the working group extensively. It was just revised to include some content from other drafts, and that was discussed. Now we are looking to finish this up. Please speak up if you consider that it is done and ready for publication as a Proposed Standard. Alternatively, if you see difficulties or reasons why it should not be published as a PS, please speak up. Preferably with an explanation of the concerns you have. Thank you. This call will last until 3-November-2021. Yours, Joel and Jim From nobody Tue Oct 19 11:02:59 2021 Return-Path: X-Original-To: sfc@ietfa.amsl.com Delivered-To: sfc@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 9DA783A0922 for ; Tue, 19 Oct 2021 11:02:57 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.1 X-Spam-Level: X-Spam-Status: No, score=-2.1 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, NICE_REPLY_A=-0.001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=joelhalpern.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 UduSKnLtVubV for ; Tue, 19 Oct 2021 11:02:53 -0700 (PDT) Received: from mailb2.tigertech.net (mailb2.tigertech.net [208.80.4.154]) (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 AC2AF3A0912 for ; Tue, 19 Oct 2021 11:02:53 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by mailb2.tigertech.net (Postfix) with ESMTP id 4HYhRd0Dhlz1nsbH; Tue, 19 Oct 2021 11:02:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=joelhalpern.com; s=2.tigertech; t=1634666573; bh=jNYuErV0K3fp2qeAbYiiJijb1ehkRpEp+VChITZ0e9Q=; h=Date:Subject:To:References:From:In-Reply-To:From; b=JniTh7p6eqBXeTlJtp6dn/VY7s6q71KMwDCOF30N3lQ7jHU7E+thLwvtLryrdisI0 W5+D2Rds9eg9gvFqTvEp9ypQN9i7XFG4S3NSYc6FLp02MWNURFkomKKZhqDaafvx8Z DrTfL1mptFxG2slmJNjT0dAbTBw1N/gjH1yt3G74= X-Quarantine-ID: X-Virus-Scanned: Debian amavisd-new at b2.tigertech.net Received: from [192.168.22.111] (50-233-136-230-static.hfc.comcastbusiness.net [50.233.136.230]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mailb2.tigertech.net (Postfix) with ESMTPSA id 4HYhRc2jj7z1nwZt; Tue, 19 Oct 2021 11:02:52 -0700 (PDT) Message-ID: Date: Tue, 19 Oct 2021 14:02:51 -0400 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.2.0 Content-Language: en-US To: Greg Mirsky , Service Function Chaining IETF list References: <163466112750.7235.4587641153411151399@ietfa.amsl.com> From: "Joel M. Halpern" In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Archived-At: Subject: Re: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-oam-16.txt X-BeenThere: sfc@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Network Service Chaining List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Oct 2021 18:02:58 -0000 While we are conducting the last call, and deciding who will shepherd this document... 1) If anyone would like to shepherd it, please let me or Jim know. 2) Would the authors and key contributors please confirm to the lsit that all known relevant IPR has been disclosed. Thank you, Joel On 10/19/2021 12:39 PM, Greg Mirsky wrote: > Dear Jim and Joel, > we've completed merging the substantive parts of two SFC OAM drafts. > Many thanks to Med for his thorough reviews, thoughtful comments that > helped us improve the document. The authors believe that the draft is > stable and is ready for the WG LC. We greatly appreciate your > consideration of starting the WG LC and are committed to addressing > questions and comments. > > Regards, > Greg (on behalf off the authors) > > ---------- Forwarded message --------- > From: > > Date: Tue, Oct 19, 2021 at 9:33 AM > Subject: [sfc] I-D Action: draft-ietf-sfc-multi-layer-oam-16.txt > To: > > Cc: > > > > > A New Internet-Draft is available from the on-line Internet-Drafts > directories. > This draft is a work item of the Service Function Chaining WG of the IETF. > > Title : Active OAM for Service Function Chaining > Authors : Greg Mirsky > Wei Meng > Ting Ao > Kent Leung > Gyan Mishra > Filename : draft-ietf-sfc-multi-layer-oam-16.txt > Pages : 37 > Date : 2021-10-19 > > Abstract: > A set of requirements for active Operation, Administration, and > Maintenance (OAM) of Service Function Chains (SFCs) in a network is > presented in this document. Based on these requirements, an > encapsulation of active OAM messages in SFC and a mechanism to detect > and localize defects are described. > > This document updates RFC 8300. Particularly, it updates the > definition of O (OAM) bit in the Network Service Header (NSH) (RFC > 8300) and defines how an active OAM message is identified in the NSH. > > > The IETF datatracker status page for this draft is: > https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/ > > > There is also an HTML version available at: > https://www.ietf.org/archive/id/draft-ietf-sfc-multi-layer-oam-16.html > > > A diff from the previous version is available at: > https://www.ietf.org/rfcdiff?url2=draft-ietf-sfc-multi-layer-oam-16 > > > > Internet-Drafts are also available by anonymous FTP at: > ftp://ftp.ietf.org/internet-drafts/ > > > _______________________________________________ > sfc mailing list > sfc@ietf.org > https://www.ietf.org/mailman/listinfo/sfc > From nobody Tue Oct 19 23:02:38 2021 Return-Path: X-Original-To: sfc@ietfa.amsl.com Delivered-To: sfc@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7F2BE3A05C7 for ; Tue, 19 Oct 2021 23:02:34 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.1 X-Spam-Level: X-Spam-Status: No, score=-2.1 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, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=orange.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 3voMXZeCa869 for ; Tue, 19 Oct 2021 23:02:29 -0700 (PDT) Received: from relais-inet.orange.com (relais-inet.orange.com [80.12.66.40]) (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 80E1F3A05D0 for ; Tue, 19 Oct 2021 23:02:29 -0700 (PDT) Received: from opfedar06.francetelecom.fr (unknown [xx.xx.xx.8]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by opfedar24.francetelecom.fr (ESMTP service) with ESMTPS id 4HZ0Pt42ygz5vxp; Wed, 20 Oct 2021 08:02:26 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=orange.com; s=ORANGE001; t=1634709746; bh=8gM8qDP5Ri1v7AmWh79zAV5XrxBktzgnoLoF+QqksQE=; h=From:To:Subject:Date:Message-ID:Content-Type: Content-Transfer-Encoding:MIME-Version; b=cVPtW5i9TAo13/bpljDbOHzlcw5Ui+u/kodnDvO7HUQj4S6EvBcgOaSHdQRNakby2 0ywRCqg/TPVqB2zUGmYY9y2gaXAmJZuNi+xEhpnNJWvKDkBBGRZrWaHiXjglfy3oN8 txm2adDhOheJs+7Ulugv6dw5JJRxIIL/EB61vxSqt9HHzUKbDZddi4xyBwkqdGf0Dd rGbnrkSxptDVE3VhWqLXR03BSF0iupuLckOggBNYS1bZyFJJglBTRJK7PCUrxkkMYK rk+gSgEXUEjV5xZcqFHOAXuPGHv75k9sCUTaeYUFkWKQzwzW5LtMBUeAxyXKtIBMt+ 4mCeVhBGshH9Q== Received: from Exchangemail-eme6.itn.ftgroup (unknown [xx.xx.13.60]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by opfedar06.francetelecom.fr (ESMTP service) with ESMTPS id 4HZ0Pt31ZPz3wbm; Wed, 20 Oct 2021 08:02:26 +0200 (CEST) From: To: "Joel M. Halpern" , "sfc@ietf.org" Thread-Topic: [sfc] Fwd: IETF WG state changed for draft-ietf-sfc-multi-layer-oam Thread-Index: AQHXxQxalEkQRsfgrUCh9zpXarrv+6vbZa7w Content-Class: Date: Wed, 20 Oct 2021 06:02:25 +0000 Message-ID: <3446_1634709746_616FB0F2_3446_314_29_787AE7BB302AE849A7480A190F8B93303542EDC7@OPEXCAUBMA2.corporate.adroot.infra.ftgroup> References: <163466338230.28281.15470366888092462486@ietfa.amsl.com> In-Reply-To: Accept-Language: fr-FR, en-US Content-Language: fr-FR X-MS-Has-Attach: X-MS-TNEF-Correlator: msip_labels: MSIP_Label_07222825-62ea-40f3-96b5-5375c07996e2_Enabled=true; MSIP_Label_07222825-62ea-40f3-96b5-5375c07996e2_SetDate=2021-10-20T06:01:27Z; MSIP_Label_07222825-62ea-40f3-96b5-5375c07996e2_Method=Privileged; MSIP_Label_07222825-62ea-40f3-96b5-5375c07996e2_Name=unrestricted_parent.2; MSIP_Label_07222825-62ea-40f3-96b5-5375c07996e2_SiteId=90c7a20a-f34b-40bf-bc48-b9253b6f5d20; MSIP_Label_07222825-62ea-40f3-96b5-5375c07996e2_ActionId=03466d91-596e-4ace-b945-c09d650f2be2; MSIP_Label_07222825-62ea-40f3-96b5-5375c07996e2_ContentBits=0 x-originating-ip: [10.114.13.247] Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: Subject: Re: [sfc] Fwd: IETF WG state changed for draft-ietf-sfc-multi-layer-oam X-BeenThere: sfc@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Network Service Chaining List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Oct 2021 06:02:35 -0000 Hi Joel, all, I think the draft is ready for publication.=20 Cheers, Med > -----Message d'origine----- > De=A0: sfc De la part de Joel M. Halpern > Envoy=E9=A0: mardi 19 octobre 2021 19:11 > =C0=A0: sfc@ietf.org > Objet=A0: [sfc] Fwd: IETF WG state changed for draft-ietf-sfc-multi-layer- > oam >=20 > This starts the Working Group last call for draft-ietf-sfc-multi-layer- > oam. Please see the text below that has been recorded in the datatracker. >=20 > thank you, > Joel >=20 >=20 > -------- Forwarded Message -------- > Subject: IETF WG state changed for draft-ietf-sfc-multi-layer-oam > Resent-Date: Tue, 19 Oct 2021 10:09:42 -0700 (PDT) > Resent-From: alias-bounces@ietf.org > Resent-To: jmh@joelhalpern.com, tal.mizrahi.phd@gmail.com, > james.n.guichard@futurewei.com > Date: Tue, 19 Oct 2021 10:09:42 -0700 > From: IETF Secretariat > To: draft-ietf-sfc-multi-layer-oam@ietf.org, sfc-chairs@ietf.org >=20 >=20 > The IETF WG state of draft-ietf-sfc-multi-layer-oam has been changed to > "In > WG Last Call" from "WG Document" by Joel Halpern: >=20 > https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/ >=20 > Comment: > This document has been discussed in the working group extensively. It was > just revised to include some content from other drafts, and that was > discussed. Now we are looking to finish this up. Please speak up if you > consider that it is done and ready for publication as a Proposed > Standard. Alternatively, if you see difficulties or reasons why it > should not be > published as a PS, please speak up. Preferably with an explanation of the > concerns you have. >=20 > Thank you. This call will last until 3-November-2021. >=20 > Yours, > Joel and Jim >=20 > _______________________________________________ > sfc mailing list > sfc@ietf.org > https://www.ietf.org/mailman/listinfo/sfc ___________________________________________________________________________= ______________________________________________ Ce message et ses pieces jointes peuvent contenir des informations confiden= tielles ou privilegiees et ne doivent donc pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu= ce message par erreur, veuillez le signaler a l'expediteur et le detruire ainsi que les pieces jointes. Les messages el= ectroniques etant susceptibles d'alteration, Orange decline toute responsabilite si ce message a ete altere, deforme ou = falsifie. Merci. This message and its attachments may contain confidential or privileged inf= ormation that may be protected by law; they should not be distributed, used or copied without authorisation. If you have received this email in error, please notify the sender and dele= te this message and its attachments. As emails may be altered, Orange is not liable for messages that have been = modified, changed or falsified. Thank you. From nobody Wed Oct 20 07:22:53 2021 Return-Path: X-Original-To: sfc@ietfa.amsl.com Delivered-To: sfc@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E8CF83A0B95 for ; Wed, 20 Oct 2021 07:22:20 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.098 X-Spam-Level: X-Spam-Status: No, score=-2.098 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] 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 iPgyQmYh6T5C for ; Wed, 20 Oct 2021 07:22:15 -0700 (PDT) Received: from mail-ed1-x529.google.com (mail-ed1-x529.google.com [IPv6:2a00:1450:4864:20::529]) (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 62B663A09FE for ; Wed, 20 Oct 2021 07:22:15 -0700 (PDT) Received: by mail-ed1-x529.google.com with SMTP id g10so26316382edj.1 for ; Wed, 20 Oct 2021 07:22:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=XvzJSBeZYIKEAyxZGPxtKZE8yRHdNI7QNnCALrh8KOs=; b=GCUww2FXgg/Wn9bMDcnViqDWu6RX22g914l/SSvow2D4hfn63bHERuFm8vXq2cKEjX vepVjoxQKau7bY2KiuRGVQxkJW9fA3hX6JrVYriChpSOnFa+niTiBai7hySG9l0wjF7K lN1C1ryKLHeL9XjlXq+6ni6V+aS4TFAZwy7k7rhBAd1L+tCcdHKPam2x8JqpHvOGcqV6 aa/wdoNja4GkH38JlSSHxIDbiIwSdM3fSxJahJMPue99ar6a74O+zJ4EEqET2GtACgHP /RwI6SeXv49G3X9JrmrC7FNbB2s2HUAaxFGIhQb4/4kX7JvE4UVG/izZrW77h64WouIE j8kA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=XvzJSBeZYIKEAyxZGPxtKZE8yRHdNI7QNnCALrh8KOs=; b=ZIkp/MLwV5kVpydV7O7VAcQ1QyS7rH6UavAYcS+knNpez8bsnc/mUdlw/d8ix681Kd PbpuWnx4u8jUDQjXuVcil4oYW2SviOj1DWxKc9Z6TpjbffOVIypjNI2+WcssWF7ZPDtb kN4eZhufNmnOHyj7SbjKYKEBO+W3G0zZDCeQjL7IBMt/6kcJZxFnbu2W3pt14+1QMpGa MB9wB/DnShBbc3AQjE/W93Y/NjyE8o9IGQQ/bHtuY02p6kEnzADrVhLExaMipDrR/VIN NMs5Sdx7gVPBWmUEzDuam4vVr+CLKFJuT4dXAbK7x0JUoDfFGZpsC5e9wJ2PCI2lrcWp eVCA== X-Gm-Message-State: AOAM530q/QdWBM/j/djgPISSBXq8byTtwAowhZAGH8+JnDt4H3xLf4xu cUdpZj6RlleKYeSaDXFQNBIErj6l5jTCvrej1HEUUWvV X-Google-Smtp-Source: ABdhPJwVsfPu+sh7fAYMaHIo6UIsTY2o3RIwlzS46P0NEH2Ci69HW9LxXMnptKrzR7bN+euivG0SO9QuVY3JwiFcdxo= X-Received: by 2002:a17:907:708e:: with SMTP id yj14mr8588ejb.469.1634739591900; Wed, 20 Oct 2021 07:19:51 -0700 (PDT) MIME-Version: 1.0 References: <163466338230.28281.15470366888092462486@ietfa.amsl.com> In-Reply-To: From: Greg Mirsky Date: Wed, 20 Oct 2021 07:19:40 -0700 Message-ID: To: "Joel M. Halpern" Cc: "sfc@ietf.org" Content-Type: multipart/alternative; boundary="000000000000acf17305cec978bd" Archived-At: Subject: Re: [sfc] Fwd: IETF WG state changed for draft-ietf-sfc-multi-layer-oam X-BeenThere: sfc@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Network Service Chaining List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Oct 2021 14:22:30 -0000 --000000000000acf17305cec978bd Content-Type: text/plain; charset="UTF-8" As the co-author, I believe that the draft is ready for publication. Regards, Greg On Tue, Oct 19, 2021 at 10:11 AM Joel M. Halpern wrote: > This starts the Working Group last call for > draft-ietf-sfc-multi-layer-oam. Please see the text below that has been > recorded in the datatracker. > > thank you, > Joel > > > -------- Forwarded Message -------- > Subject: IETF WG state changed for draft-ietf-sfc-multi-layer-oam > Resent-Date: Tue, 19 Oct 2021 10:09:42 -0700 (PDT) > Resent-From: alias-bounces@ietf.org > Resent-To: jmh@joelhalpern.com, tal.mizrahi.phd@gmail.com, > james.n.guichard@futurewei.com > Date: Tue, 19 Oct 2021 10:09:42 -0700 > From: IETF Secretariat > To: draft-ietf-sfc-multi-layer-oam@ietf.org, sfc-chairs@ietf.org > > > The IETF WG state of draft-ietf-sfc-multi-layer-oam has been changed to "In > WG Last Call" from "WG Document" by Joel Halpern: > > https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/ > > Comment: > This document has been discussed in the working group extensively. It was > just revised to include some content from other drafts, and that was > discussed. Now we are looking to finish this up. Please speak up if you > consider that it is done and ready for publication as a Proposed > Standard. Alternatively, if you see difficulties or reasons why it > should not be > published as a PS, please speak up. Preferably with an explanation of the > concerns you have. > > Thank you. This call will last until 3-November-2021. > > Yours, > Joel and Jim > > _______________________________________________ > sfc mailing list > sfc@ietf.org > https://www.ietf.org/mailman/listinfo/sfc > --000000000000acf17305cec978bd Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

As the co-author, I believe that the draft is ready for pu= blication.

Regards,

Greg

On Tue, Oct 19, = 2021 at 10:11 AM Joel M. Halpern <jmh@joelhalpern.com> wrote:

This starts the Working Group last call for
draft-ietf-sfc-multi-layer-oam.=C2=A0 Please see the text below that has be= en
recorded in the datatracker.

thank you,
Joel

-------- Forwarded Message --------
Subject: IETF WG state changed for draft-ietf-sfc-multi-layer-oam
Resent-Date: Tue, 19 Oct 2021 10:09:42 -0700 (PDT)
Resent-From: al= ias-bounces@ietf.org
Resent-To: jmh@joe= lhalpern.com, tal.mizrahi.phd@gmail.com,
james.n= .guichard@futurewei.com
Date: Tue, 19 Oct 2021 10:09:42 -0700
From: IETF Secretariat <ietf-secretariat-reply@ietf.org>
To: draft-ietf-sfc-multi-layer-oam@ietf.org, sfc-chairs@ietf.org

The IETF WG state of draft-ietf-sfc-multi-layer-oam has been changed to &qu= ot;In
WG Last Call" from "WG Document" by Joel Halpern:

https://datatracker.ietf.org/doc/dra= ft-ietf-sfc-multi-layer-oam/

Comment:
This document has been discussed in the working group extensively.=C2=A0 It= was
just revised to include some content from other drafts, and that was
discussed.=C2=A0 Now we are looking to finish this up.=C2=A0 Please speak u= p if you
consider that it is done and ready for publication as a Proposed
Standard. Alternatively, if you see difficulties or reasons why it
should not be
published as a PS, please speak up.=C2=A0 Preferably with an explanation of= the
concerns you have.

Thank you.=C2=A0 This call will last until 3-November-2021.

Yours,
Joel and Jim

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

--000000000000acf17305cec978bd-- From nobody Wed Oct 20 07:26:42 2021 Return-Path: X-Original-To: sfc@ietfa.amsl.com Delivered-To: sfc@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1B8B23A0978 for ; Wed, 20 Oct 2021 07:26:40 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.098 X-Spam-Level: X-Spam-Status: No, score=-2.098 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] 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 pWD5PJ0_vDiz for ; Wed, 20 Oct 2021 07:26:35 -0700 (PDT) Received: from mail-ed1-x534.google.com (mail-ed1-x534.google.com [IPv6:2a00:1450:4864:20::534]) (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 C3BDF3A0972 for ; Wed, 20 Oct 2021 07:26:34 -0700 (PDT) Received: by mail-ed1-x534.google.com with SMTP id i20so26344139edj.10 for ; Wed, 20 Oct 2021 07:26:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=GOP+aS+kYZql25QwdGAOwdEkU9tSBiwlDMPZe9l3ulA=; b=cWBbhGNVT5CRiS3jK5E/vY8P5ANrStoNEUtNVP98D0Z9zvVr219FN2MFzlyn2IsJWP hV84MZ1VPWDDLDl0tvRy0tN7VSpvxTd0H7aEPYa8I7T53BZsOIA75CvUbWYX9/67F7op bChjGTvsZPfBRhy8s1NAOwdSS8DTilgOdOkotFXndc1dg8L3BM7euWP3y6GO81eEBEZY smCUNqsznpLk4z2vRfzCSRd+jvZ9h49YmYh3D3WdBHah/nul4zZwvJTspEqZ2Q4WzGsD eJT+pNpQ/4lIsaWERGZcSrCmyK64i6P1ELmm9Atpm9jFE+AUTJMjYcIQmioZepn+6U4z +FJQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=GOP+aS+kYZql25QwdGAOwdEkU9tSBiwlDMPZe9l3ulA=; b=hVsUyTvhAig3M93A+k1wQQtJLWpdtVlRlA4JR8KPelGw/Ll0ipSUgP2sOqxN4R90N4 uB35I97aaZW9qxQiCo7/ku+E+l1D13MoQ6UpqCNH5tytKjQJzMyDcfwBo+47Q9FVNJX8 fXZyo3CzMogY3A1WOSkqk8ivV4LHz80l9yE164evMA36TNqyOWyFv2MhmrwU/4ukIbmn xYgWWExds6iF/isnrrwGC/33PfMLaDaDqGa+RkpFRxrr0lwDqWkIThLXud1wgqljFJT8 RxXQQqGL2J/+KsFrs0fcc9E3e5qb6UwU9hb8ryTyt0k+rsBF2TGCcwaBRVAIzZ2vGi0o WM5w== X-Gm-Message-State: AOAM532B/yIorUxBZDdTkmnSUpTv8qX5OTId659rpx7aq4WZtVUNf0OL vRxvtyWgz0usbO8g2IqaNijbhcG8+4Ku+1JhGzi4HS6h X-Google-Smtp-Source: ABdhPJxfyyMxKO4/tGKtoryhIYCW9xsUH2YqhEVktpuYpulh3WvZv4/3ukDyCWjyv9t3OxJM7EJfy+Xci4n0nWwN4gs= X-Received: by 2002:a05:6402:1356:: with SMTP id y22mr351367edw.3.1634739841091; Wed, 20 Oct 2021 07:24:01 -0700 (PDT) MIME-Version: 1.0 References: <163466112750.7235.4587641153411151399@ietfa.amsl.com>

In-Reply-To: From: Greg Mirsky Date: Wed, 20 Oct 2021 07:23:50 -0700 Message-ID: To: "Joel M. Halpern" Cc: Service Function Chaining IETF list Content-Type: multipart/alternative; boundary="000000000000874bca05cec987b4" Archived-At: Subject: Re: [sfc] Fwd: I-D Action: draft-ietf-sfc-multi-layer-oam-16.txt X-BeenThere: sfc@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Network Service Chaining List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Oct 2021 14:26:40 -0000 --000000000000874bca05cec987b4 Content-Type: text/plain; charset="UTF-8" Hi, Joel et al. as the co-author, I am not aware of any undisclosed IPR related to this draft. Regards, Greg On Tue, Oct 19, 2021 at 11:02 AM Joel M. Halpern wrote: > While we are conducting the last call, and deciding who will shepherd > this document... > 1) If anyone would like to shepherd it, please let me or Jim know. > 2) Would the authors and key contributors please confirm to the lsit > that all known relevant IPR has been disclosed. > > Thank you, > Joel > > On 10/19/2021 12:39 PM, Greg Mirsky wrote: > > Dear Jim and Joel, > > we've completed merging the substantive parts of two SFC OAM drafts. > > Many thanks to Med for his thorough reviews, thoughtful comments that > > helped us improve the document. The authors believe that the draft is > > stable and is ready for the WG LC. We greatly appreciate your > > consideration of starting the WG LC and are committed to addressing > > questions and comments. > > > > Regards, > > Greg (on behalf off the authors) > > > > ---------- Forwarded message --------- > > From: > > > Date: Tue, Oct 19, 2021 at 9:33 AM > > Subject: [sfc] I-D Action: draft-ietf-sfc-multi-layer-oam-16.txt > > To: > > > Cc: > > > > > > > > > A New Internet-Draft is available from the on-line Internet-Drafts > > directories. > > This draft is a work item of the Service Function Chaining WG of the > IETF. > > > > Title : Active OAM for Service Function Chaining > > Authors : Greg Mirsky > > Wei Meng > > Ting Ao > > Kent Leung > > Gyan Mishra > > Filename : draft-ietf-sfc-multi-layer-oam-16.txt > > Pages : 37 > > Date : 2021-10-19 > > > > Abstract: > > A set of requirements for active Operation, Administration, and > > Maintenance (OAM) of Service Function Chains (SFCs) in a network is > > presented in this document. Based on these requirements, an > > encapsulation of active OAM messages in SFC and a mechanism to detect > > and localize defects are described. > > > > This document updates RFC 8300. Particularly, it updates the > > definition of O (OAM) bit in the Network Service Header (NSH) (RFC > > 8300) and defines how an active OAM message is identified in the NSH. > > > > > > The IETF datatracker status page for this draft is: > > https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/ > > > > > > There is also an HTML version available at: > > https://www.ietf.org/archive/id/draft-ietf-sfc-multi-layer-oam-16.html > > > > > > A diff from the previous version is available at: > > https://www.ietf.org/rfcdiff?url2=draft-ietf-sfc-multi-layer-oam-16 > > > > > > > > Internet-Drafts are also available by anonymous FTP at: > > ftp://ftp.ietf.org/internet-drafts/ > > > > > > > _______________________________________________ > > sfc mailing list > > sfc@ietf.org > > https://www.ietf.org/mailman/listinfo/sfc > > > --000000000000874bca05cec987b4 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Hi, Joel et al.

as the co-author, I am not aware of an= y undisclosed IPR related to this draft.

Regards,<= /div>

Greg

On Tue, Oct 19, 2021 at 11:02 AM Joel M. Halpern <jmh@joelhalpern.com> wrote:
=

While we are conduc= ting the last call, and deciding who will shepherd
this document...
1) If anyone would like to shepherd it, please let me or Jim know.
2) Would the authors and key contributors please confirm to the lsit
that all known relevant IPR has been disclosed.

Thank you,
Joel

On 10/19/2021 12:39 PM, Greg Mirsky wrote:
> Dear Jim and Joel,
> we've completed merging the substantive parts of two SFC OAM draft= s.
> Many thanks to Med for his thorough reviews, thoughtful comments that =
> helped us improve the document. The authors believe that the draft is =
> stable and is ready for the WG LC. We greatly appreciate your
> consideration of starting the WG LC and are committed to addressing > questions and comments.
>
> Regards,
> Greg (on behalf off the authors)
>
> ---------- Forwarded message ---------
> From: <internet-drafts@ietf.org <mailto:internet-drafts@ietf.org>>
> Date: Tue, Oct 19, 2021 at 9:33 AM
> Subject: [sfc] I-D Action: draft-ietf-sfc-multi-layer-oam-16.txt
> To: <i-d= -announce@ietf.org <mailto:i-d-announce@ietf.org>>
> Cc: <sfc@ietf.org= <mailto:sfc@ietf.= org>>
>
>
>
> A New Internet-Draft is available from the on-line Internet-Drafts > directories.
> This draft is a work item of the Service Function Chaining WG of the I= ETF.
>
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Title=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0: Active OAM for Service Function Chaining
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Authors=C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0: Greg Mirsky
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 Wei Meng
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 Ting Ao
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 Kent Leung
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 Gyan Mishra
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Filename=C2=A0 =C2=A0 =C2=A0 =C2=A0 = : draft-ietf-sfc-multi-layer-oam-16.txt
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Pages=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0: 37
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Date=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 : 2021-10-19
>
> Abstract:
>=C2=A0 =C2=A0 =C2=A0A set of requirements for active Operation, Adminis= tration, and
>=C2=A0 =C2=A0 =C2=A0Maintenance (OAM) of Service Function Chains (SFCs)= in a network is
>=C2=A0 =C2=A0 =C2=A0presented in this document.=C2=A0 Based on these re= quirements, an
>=C2=A0 =C2=A0 =C2=A0encapsulation of active OAM messages in SFC and a m= echanism to detect
>=C2=A0 =C2=A0 =C2=A0and localize defects are described.
>
>=C2=A0 =C2=A0 =C2=A0This document updates RFC 8300.=C2=A0 Particularly,= it updates the
>=C2=A0 =C2=A0 =C2=A0definition of O (OAM) bit in the Network Service He= ader (NSH) (RFC
>=C2=A0 =C2=A0 =C2=A08300) and defines how an active OAM message is iden= tified in the NSH.
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/do= c/draft-ietf-sfc-multi-layer-oam/
> <https://datatracker.ietf.or= g/doc/draft-ietf-sfc-multi-layer-oam/>
>
> There is also an HTML version available at:
> https://www.ietf.org/arch= ive/id/draft-ietf-sfc-multi-layer-oam-16.html
> <https://www.ietf.org/= archive/id/draft-ietf-sfc-multi-layer-oam-16.html>
>
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdi= ff?url2=3Ddraft-ietf-sfc-multi-layer-oam-16
> <https://www.ietf.org/r= fcdiff?url2=3Ddraft-ietf-sfc-multi-layer-oam-16>
>
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/ <ftp://= ftp.ietf.org/internet-drafts/>
>
>
> _______________________________________________
> sfc mailing list
> sfc@ietf.org <= ;mailto:sfc@ietf.org&= gt;
> https://www.ietf.org/mailman/listinfo/sfc
> <https://www.ietf.org/mailman/listinfo/sfc><= br>

--000000000000874bca05cec987b4-- From nobody Thu Oct 21 18:36:52 2021 Return-Path: X-Original-To: sfc@ietf.org Delivered-To: sfc@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id D2E443A03FB; Thu, 21 Oct 2021 18:36:46 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: sfc@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 7.39.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: sfc@ietf.org Message-ID: <163486660673.20363.3559435212814356868@ietfa.amsl.com> Date: Thu, 21 Oct 2021 18:36:46 -0700 Archived-At: Subject: [sfc] I-D Action: draft-ietf-sfc-nsh-ecn-support-08.txt X-BeenThere: sfc@ietf.org X-Mailman-Version: 2.1.29 List-Id: Network Service Chaining List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 Oct 2021 01:36:47 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Service Function Chaining WG of the IETF. Title : Explicit Congestion Notification (ECN) and Congestion Feedback Using the Network Service Header (NSH) and IPFIX Authors : Donald E. Eastlake Bob Briscoe Yizhou Li Andrew G. Malis Xinpeng Wei Filename : draft-ietf-sfc-nsh-ecn-support-08.txt Pages : 33 Date : 2021-10-21 Abstract: Explicit congestion notification (ECN) allows a forwarding element to notify downstream devices of the onset of congestion without having to drop packets. Coupled with a means to feed information about congestion back to upstream nodes, this can improve network efficiency through better congestion control, frequently without packet drops. This document specifies ECN and congestion feedback support within a Service Function Chaining (SFC) domain through use of the Network Service Header (NSH, RFC 8300) and IP Flow Information Export (IPFIX, RFC 7011). The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-sfc-nsh-ecn-support/ There is also an htmlized version available at: https://datatracker.ietf.org/doc/html/draft-ietf-sfc-nsh-ecn-support-08 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-sfc-nsh-ecn-support-08 Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Tue Oct 26 19:08:12 2021 Return-Path: X-Original-To: sfc@ietfa.amsl.com Delivered-To: sfc@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A1EF73A1ABE for ; Tue, 26 Oct 2021 18:51:05 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.996 X-Spam-Level: X-Spam-Status: No, score=-1.996 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, HTML_MESSAGE=0.001, HTTPS_HTTP_MISMATCH=0.1, SPF_HELO_NONE=0.001, SPF_NONE=0.001, URIBL_BLOCKED=0.001] autolearn=unavailable autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); 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Tue, 26 Oct 2021 18:50:58 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwxsXu/svlo3c6KOmQ/e/eIqoa5Yj+GilSe9Fwc93qerkUH7Cu6ca/SvnZ3OCUKRR2hJ3az8EqqQUWgYD9/I84= X-Received: by 2002:a0c:c702:: with SMTP id w2mr26720314qvi.24.1635299457759; Tue, 26 Oct 2021 18:50:57 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Shwetha Bhandari Date: Wed, 27 Oct 2021 07:20:46 +0530 Message-ID: To: Greg Mirsky Cc: James Guichard , draft-ietf-sfc-ioam-nsh@ietf.org, "sfc@ietf.org" , "sfc-chairs@ietf.org" Content-Type: multipart/alternative; boundary="000000000000480e9005cf4bd3c5" X-mailroute: internal X-Proofpoint-GUID: OKOrXPhUszDjGV_vMqCaW1iohr3Z0DHc X-Proofpoint-ORIG-GUID: OKOrXPhUszDjGV_vMqCaW1iohr3Z0DHc X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 lowpriorityscore=0 malwarescore=0 spamscore=0 bulkscore=5 phishscore=0 priorityscore=1501 mlxscore=0 mlxlogscore=617 impostorscore=0 clxscore=1011 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2110150000 definitions=main-2110270008 Archived-At: X-Mailman-Approved-At: Tue, 26 Oct 2021 19:08:11 -0700 Subject: Re: [sfc] WGLC for https://datatracker.ietf.org/doc/draft-ietf-sfc-ioam-nsh/ X-BeenThere: sfc@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Network Service Chaining List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Oct 2021 01:51:06 -0000 --000000000000480e9005cf4bd3c5 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Greg, Sorry for the very late reply. Please find responses to your comments inline @Shwetha: On Wed, Sep 8, 2021 at 3:30 AM Greg Mirsky wrote: > Dear Authors and All, > I've read the current version of the draft and have some comments I'd lik= e > to share with you. I much appreciate your thoughts on where this work > should go considering developments in other IETF WGs. Please find my note= s > and questions below: > > - It is stated in the Abstract that: > > In-situ Operations, Administration, and Maintenance (IOAM) records > operational and telemetry information in the packet while the packet > traverses a path between two points in the network. > > But that is the case only for the pre-allocated and incremental trace > option types. The Direct Export option > > does not write telemetry data into the data packet itself but export > telemetry information in a specially constructed packet. > And as we are talking about different IOAM trace options, the question of > the scope of this document seems appropriate. There is a WGLC on two IOAM > documents > > active through September 15th at the IPPM WG. I believe that it would be > beneficial if we had a single document that describes the applicability o= f > IOAM in all its functionality defined by documents in IPPM WG. Of course, > that cannot be a moving target as that would not be helpful. But since th= e > IPPM WG discusses the progress of two IOAM documents, it could be a great > time to address the applicability of the Direct Export trace type > > and Loopback and Active flags defined in draft-ietf-ippm-ioam-flags > . > It would be concerning to have more than one SFC document describing the > applicability of the generic IOAM mechanisms > > Shwetha> This is a fair point. We will revise the draft with text in the abstract and Section 3 IOAM-Type to be updated to include the usage of trace and DEX options. The encapsulation of IOAM options within NSH itself in its current form already supports all the IOAM Option Type defined both from draft-ietf-ippm-ioam-data and draft-ietf-ippm-ioam-direct-export along with the flags supported within the options. Hence the IOAM-data-field definitions in the draft will remain unchanged. > > > > - The location of the IOAM header in the SFC NSH-encapsulated packet > is defined in Section 3: > > IOAM-Data-Fields are carried in NSH > using a next protocol header which follows the NSH MD context > headers. > > I've checked RFC 8300 but couldn't find it defines the Next Protocol > header. Also, it appears that NSH Context headers are optional. Hence my > question. Is the presence of an NSH Context header required when using > IOAM? Could you clarify which mechanism is used to identify the payload o= f > an SFC NSH-encapsulated packet as IOAM? > > Shwetha> We will reword it, it is not Next Protocol header but using IOAM as a Next Protocol as described in Section 4.1 and requested in IANA section. Following is the proposed text to align with the RFC 8300 reference to context headers following base header and service path header: "The NSH is defined in [RFC8300]. IOAM-Data-Fields are carried in NSH using a next protocol to identify IOAM data fields that follows NSH context headers." > > - If I understand the format of the IOAM header defined in Section 3 > correctly, the header's length is limited by 1020 octets, while the > effective length containing IOAM options and data - 1016 octets. Is th= at > correct? What is the recommended technique of collecting IOAM data tha= t > exceeds that limit? > > Shwetha > IOAM options inherently support specifying the size limits at the node that added the IOAM options. While operationalizing the solution the data types included and number of nodes expected to be adding the data should be selected. This is covered in deployment considerations draft-brockners-opsawg-ioam-deployment. > > - In Section 4.1, I've found the text reflecting the history of the > discussion about how to carry the IOAM header using NSH encapsulation.= As > the text has no normative value, I suggest moving it into an Appendix. > > Shwetha > Agreed, revised draft will have this section moved to Appendix. > > - I find the rules of handling the O-bit in NSH listed in Section 4.2 > inconsistent and confusing. The IOAM header is not part of NSH > encapsulation but is a part of the payload. But in one case, when user= data > follows it, the O-bit must not be set as. If there's no user data afte= r the > IOAM header, then the O-bit must be set. But from the perspective of N= SH > encapsulation, it includes specially constructed data added for the so= le > purpose of collecting OAM/telemetry information. Then, why, in one cas= e, > the O-bit is cleared and in the other set if, in both cases, the > NSH-encapsulated packet is used to perform the OAM function? > > Shwetha > The reason for not setting the O-bit for packets that contains actual user data is because RFC 8300 has " SF/SFF/SFC Proxy/Classifier implementations that do not support SFC OAM procedures SHOULD discard packets with O bit set". It will be undesirable to discard packets with O-bit set that carry user data as IOAM can be inserted insitu. For synthetic traffic created for OAM along with IOAM-data-fields in NSH following the NSH OAM function with 0-bit set is desirable. Thanks, Shwetha > I much appreciate your consideration of my comments and questions and > looking forward to your feedback. > > Regards, > Greg > > On Wed, Aug 18, 2021 at 5:32 AM James Guichard < > james.n.guichard@futurewei.com> wrote: > >> Dear WG: >> >> >> >> This email starts a 2 week Working Group Last Call for >> draft-ietf-sfc-ioam-nsh [1]. >> >> >> >> Please read this document if you haven=E2=80=99t read the most recent ve= rsion and >> send your comments to the SFC WG list no later than September 1st 2021. >> >> >> >> If you are raising a point which you expect will be specifically debated >> on the mailing list, consider using a specific email/thread for this poi= nt. >> >> >> >> Lastly, if you are an author or contributor please response to indicate >> whether you know of any undisclosed IPR related to this document. >> >> >> >> Thanks! >> >> >> >> Jim & Joel >> >> >> >> [1] https://datatracker.ietf.org/doc/draft-ietf-sfc-ioam-nsh/ >> >> >> >> >> >> >> >> _______________________________________________ >> sfc mailing list >> sfc@ietf.org >> https://www.ietf.org/mailman/listinfo/sfc >> >> > --000000000000480e9005cf4bd3c5 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Hi Greg,<= div>

Sorry for the very late reply. Please find responses to your comments inli= ne @Shwetha:

On Wed, Sep 8, 2021 = at 3:30 AM Greg Mirsky <gregimirsky@gmail.com> wrote:

Dear Authors and All,I've read the current version of the draft and have some comments I= 9;d like to share with you. I much appreciate your thoughts on where this w= ork should go considering developments in other IETF WGs. Please find my no= tes and questions below:
It is stated in the Abstract tha= t:
=C2=A0 =C2=A0In-situ Operations, Administration, and Maintenanc= e (IOAM) records
=C2=A0 =C2=A0operational and telemetry information in t= he packet while the packet
=C2=A0 =C2=A0traverses a path between two poi= nts in the network.
But that is the case only for the= pre-allocated and incremental trace option=C2=A0types. The Direct Export option= does not write telemetry=C2=A0data into the data packet itself but exp= ort telemetry information in a specially constructed packet.=C2=A0
And as we are talking about different IOAM trace options, the question=C2= =A0of the scope of this document seems appropriate. There is a WGLC on two IO= AM documents active through September 15th at the IPPM WG. I believe th= at it would be beneficial if we had a single document that describes the ap= plicability of IOAM in all its functionality defined by documents in IPPM W= G. Of course, that cannot be a moving target as that would not be helpful. = But since the IPPM WG discusses the progress of two IOAM documents, it coul= d be a great time to address the applicability of the Direct Export trace type and Loopback and Active flags defined in=C2=A0 draft-ietf-ippm-ioam-flags. It woul= d be concerning to have more than one SFC document describing the applicabi= lity of the generic IOAM mechanisms

Shwetha> This is a fair point. We will revise the=C2=A0 draft with= text in the abstract and Section 3 IOAM-Type=C2=A0to be updated to include = the usage of trace and DEX options.=C2=A0 The encapsulation of IOAM options= within NSH itself in its current form already supports all the IOAM Option= Type defined both from draft-ietf-ippm-ioam-data and=C2=A0draft-ietf-ippm-i= oam-direct-export along with t= he flags supported within the options. Hence the IOAM-data-field definition= s in the draft will remain unchanged.=C2=A0

=C2=A0

The location of the IOAM header in th= e SFC NSH-encapsulated=C2=A0packet is defined in Section 3:
=
= =C2=A0 =C2=A0IOAM-Data-Fields are carried in NSH
=C2=A0 =C2=A0usi= ng a next protocol header which follows the NSH MD context
=C2=A0= =C2=A0headers.
I've checked RFC 8300 but couldn'= t find it defines the Next Protocol header. Also, it appears that NSH Conte= xt headers=C2=A0are optional. Hence my question. Is the presence of an NSH = Context header required when using IOAM? Could you clarify which mechanism = is used to identify the payload of an SFC NSH-encapsulated packet as IOAM?<= /div>

Shwetha> We will reword it, it is not Next Protocol header but usin= g IOAM as a Next Protocol as described in Section 4.1 and requested in IANA= section. Following is the proposed text to align with the RFC 8300 referen= ce to context headers following base header and service path header:=

"The NSH is defined in [RFC8300].= =C2=A0 IOAM-Data-Fields are carried in NSH=C2=A0using a next protocol to id= entify IOAM data fields that follows NSH context headers."

If I understand the format of the IOAM header defined in Section 3 co= rrectly, the header's length is limited by 1020 octets, while the effec= tive length containing IOAM options and data - 1016 octets. Is that correct= ? What is the recommended technique of collecting IOAM data that exceeds th= at limit?

S= hwetha > IOAM options inherently support specifying the size limits at t= he node that added the IOAM options. While operationalizing the solution th= e data types included and number of nodes expected to be adding the data sh= ould be selected. This is covered in deployment considerations=C2=A0draft-b= rockners-opsawg-ioam-deployment.

In Section 4.1, I've = found the text reflecting the history of the discussion about how to carry = the IOAM header using NSH encapsulation. As the text has no normative value= , I suggest moving it into an Appendix.

<= div>Shwetha > Agreed, revised draft will have t= his section moved to Appendix.=C2=A0

I find the rules of h= andling the O-bit in NSH listed in Section 4.2 inconsistent and confusing. = The IOAM header is not part of NSH encapsulation but is a part of the paylo= ad. But in one case, when user data follows it, the O-bit must not be set a= s. If there's no user data after the IOAM header, then the O-bit must b= e set. But from the perspective of NSH encapsulation, it includes specially= constructed data added for the sole purpose of collecting OAM/telemetry in= formation. Then, why, in one case, the O-bit is cleared and in the other se= t if, in both cases, the NSH-encapsulated packet is used to perform the OAM= function?

= Shwetha > The reason for not setting the O-bit for packets that contains= actual user data is because RFC 8300 has " SF/SFF/SFC Proxy/Classifier implementations that do not support=

      SFC OAM proce=
dures SHOULD discard packets with O bit set". It will be undesirable t=
o discard packets with O-bit set that carry user data as IOAM can be insert=
ed insitu.

For synthetic traffic creat=
ed for OAM along with IOAM-data-fields in NSH following the NSH OAM functio=
n with 0-bit set is desirable.

Thanks,

Shwetha=C2= =A0

I much appreciate your consideration of my comments and question= s and looking forward to your feedback.

Rega= rds,
Greg

On Wed, Aug 18, 2021 at 5:32 AM James Guichard <= ;james.= n.guichard@futurewei.com> wrote:

Dear WG:

=C2=A0

This email starts a 2 week Working Group Last Call f= or draft-ietf-sfc-ioam-nsh [1].

=C2=A0

Please read this document if you haven=E2=80=99t rea= d the most recent version and send your comments to the SFC WG list no late= r than September 1^st 2021.

=C2=A0

If you are raisi= ng a point which you expect will be specifically debated on the mailing lis= t, consider using a specific email/thread for this point.

=C2=A0=

Lastly, if you a= re an author or contributor please response to indicate whether you know of= any undisclosed IPR related to this document.

=C2=A0

Thanks!

=C2=A0

Jim & Joel

=C2=A0

[1] https://datatracker.ietf.org/doc/draft-ietf-sfc-ioam-nsh/

=C2=A0

=C2=A0

=C2=A0

_______________________________________________
sfc mailing list
sfc@ietf.org
https://www.i= etf.org/mailman/listinfo/sfc

The scheme is not how you imagine it - deliberately

Connection end-points within an SFC-enabled domain

Responses to some specific comments

The scheme is not how you imagine it - deliberately

Connection end-points within an SFC-enabled domain

Responses to some specific comments