[Idr] Re: Fw:New Version Notificationfordraft-gong-idr-inter-domain-srv6-flex-algo-00.txt

Joel Halpern <jmh.direct@joelhalpern.com> Thu, 23 October 2025 14:31 UTC

Return-Path: <jmh.direct@joelhalpern.com>
X-Original-To: idr@mail2.ietf.org
Delivered-To: idr@mail2.ietf.org
Received: from localhost (localhost [127.0.0.1]) by mail2.ietf.org (Postfix) with ESMTP id E48FE7B0E396 for <idr@mail2.ietf.org>; Thu, 23 Oct 2025 07:31:34 -0700 (PDT)
X-Virus-Scanned: amavisd-new at ietf.org
X-Spam-Flag: NO
X-Spam-Score: -2.798
X-Spam-Level:
X-Spam-Status: No, score=-2.798 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, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: mail2.ietf.org (amavisd-new); dkim=pass (1024-bit key) header.d=joelhalpern.com
Received: from mail2.ietf.org ([166.84.6.31]) by localhost (mail2.ietf.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id DisFOGZ6UEtM for <idr@mail2.ietf.org>; Thu, 23 Oct 2025 07:31:32 -0700 (PDT)
Received: from maila2.tigertech.net (maila2.tigertech.net [208.80.4.152]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-256) server-digest SHA256) (No client certificate requested) by mail2.ietf.org (Postfix) with ESMTPS id C93697B0E383 for <idr@ietf.org>; Thu, 23 Oct 2025 07:31:31 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=joelhalpern.com; s=2.tigertech; t=1761229891; bh=QFt6QYUK0MgzRq9LHsZDUT2Row8+vuuuDz3v5/mmvBQ=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=OL9IZiVIiF4qsm6joHJ67wihj79XxCIoyt1POQr4h9/60dYDy7wuWg3cS7VEC1T5V e+PyRic3uBGVgigkKaGuAubsJbeC3WSNg2z8kddnwA2R4wo7z7Ho3Gk9hThONhwSt4 yScnMGCDRhrkad55kC85qsPFr93en7Od3+3VQAW0=
Received: from localhost (localhost [127.0.0.1]) by maila2.tigertech.net (Postfix) with ESMTP id 4cspPb1vvYz6KG27; Thu, 23 Oct 2025 07:31:31 -0700 (PDT)
X-Quarantine-ID: <AboXBaUphnmc>
X-Virus-Scanned: Debian amavis at a2.tigertech.net
Received: from [IPV6:2600:8806:103:9500:5d4e:2b6b:62e4:aedc] (unknown [IPv6:2600:8806:103:9500:5d4e:2b6b:62e4:aedc]) (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 maila2.tigertech.net (Postfix) with ESMTPSA id 4cspPZ18fjz6KD8T; Thu, 23 Oct 2025 07:31:24 -0700 (PDT)
Content-Type: multipart/alternative; boundary="------------HP0eUw7Pn2GoypXOqdh5IEj0"
Message-ID: <9161e35c-3140-4b07-8e10-1fe9351d54c0@joelhalpern.com>
Date: Thu, 23 Oct 2025 10:31:23 -0400
MIME-Version: 1.0
User-Agent: Mozilla Thunderbird
To: Liyan Gong <gongliyan@chinamobile.com>
References: <176094817964.2099212.242717896609381591@dt-datatracker-84f8f646b-tg6mn> <2b0068f5fadd762-00036.Richmail.00007012452970007097@chinamobile.com> <a9daea48-a8ec-4cba-b748-151a6033bd54@joelhalpern.com> <2b0368f74750759-0005d.Richmail.00005012355910803007@chinamobile.com> <07021d47-a4b4-473d-bd0b-5d0b0520e749@joelhalpern.com> <2b0468f9c877d0e-00091.Richmail.00005002159940405067@chinamobile.com>
Content-Language: en-US
From: Joel Halpern <jmh.direct@joelhalpern.com>
In-Reply-To: <2b0468f9c877d0e-00091.Richmail.00005002159940405067@chinamobile.com>
Message-ID-Hash: RAF7VM4SXD3WKW2STMHLC34K2JGEBBLC
X-Message-ID-Hash: RAF7VM4SXD3WKW2STMHLC34K2JGEBBLC
X-MailFrom: jmh.direct@joelhalpern.com
X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-idr.ietf.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header
CC: idr <idr@ietf.org>
X-Mailman-Version: 3.3.9rc6
Precedence: list
Subject: [Idr] Re: Fw:New Version Notificationfordraft-gong-idr-inter-domain-srv6-flex-algo-00.txt
List-Id: Inter-Domain Routing <idr.ietf.org>
Archived-At: <https://mailarchive.ietf.org/arch/msg/idr/CtHptUSXRU6Vt29oNGb9X-SUJ_s>
List-Archive: <https://mailarchive.ietf.org/arch/browse/idr>
List-Help: <mailto:idr-request@ietf.org?subject=help>
List-Owner: <mailto:idr-owner@ietf.org>
List-Post: <mailto:idr@ietf.org>
List-Subscribe: <mailto:idr-join@ietf.org>
List-Unsubscribe: <mailto:idr-leave@ietf.org>

Thank you.  I am glad it was already there, and apologize for missing 
it.  I appreciate that you will make that more prominent.

Yours,

Joel

On 10/23/2025 5:01 AM, Liyan Gong wrote:
>
> Hi Joel,
>
> Thank you very much for your valuable input, which greatly helps in 
> improving the document.
>
> Upon checking the document, I found that this point is mentioned in 
> two places as follows,
>
> but it has not been highlighted or explained as a key aspect which 
> makes it easy to overlook.
>
> We fully agree with your suggestion and will incorporate this feedback 
> in the next revision to enhance clarity.
>
> To keep the record and facilitate broader discussion, I have added 
> idr@ietf.org to the CC list.
>
> Any further insights are welcome.
>
> Best Regards,
>
> Liyan
>
>
>     ----邮件原文----
>     *发件人:*Joel Halpern <jmh@joelhalpern.com>
>     *收件人:*Liyan Gong <gongliyan@chinamobile.com>
>     *抄 送: *(无)
>     *发送时间:*2025-10-21 20:52:00
>     *主题:*Re: [Idr] Fw:New Version Notificationfordraft-gong-idr-inter-domain-srv6-flex-algo-00.txt
>
>     That sounds quite reasonable.  Did I miss that in the draft (if  
>         so, sorry for reading too fast)?  If not, can it be added in
>     the       next revisions?
>
>     Yours,
>
>     Joel
>
>     On 10/21/2025 5:33 AM, Liyan Gong     wrote:
>
>         Hi Joel,
>
>         Thank you for your           review and question.
>
>         In the context of           this draft, "inter-domain"
>         primarily refers to "across AS within one           operator."
>
>         The key reason is           that, within one operator's
>         control, the Flex-Algo ID can be           uniformly planned
>         and guaranteed to be consistent across           domains.
>
>         Achieving this           consistency between different
>         operators would be significantly           more challenging.It
>         would likely           require additional coordination,
>         negotiation, and possibly           complex mapping mechanisms
>         between domains, which is beyond           the current scope
>         of our proposal.
>
>         Hope this helps.Please feel free to           follow up if you
>         have any further questions.
>
>         Best Regards
>
>         Liyan
>
>
>
>             ----邮件原文----
>             *发件人:*Joel Halpern <jmh@joelhalpern.com>
>             *收件人:*Liyan Gong <gongliyan@chinamobile.com>
>             *抄 送: *(无)
>             *发送时间:*2025-10-20 22:30:29
>             *主题:*Re: [Idr] Fw:New Version Notification fordraft-gong-idr-inter-domain-srv6-flex-algo-00.txt
>
>             When you say "inter-domain" do you mean "across AS within
>             one                 operator" or do you mean "between
>             oeprators"?
>
>             Yours,
>
>             Joel
>
>             On 10/20/2025 5:09 AM, Liyan Gong                 wrote:
>
>                 Dear All,
>
>
>                 We would like to kindly share         with you our    
>                         new draft
>                 submission:draft-gong-idr-inter-domain-srv6-flex-algo-00.
>
>
>                 This document proposes BGP         extensions to      
>                       advertise SRv6 locators along with their        
>                 associated             Flexible Algorithm across AS
>                 boundaries.
>
>                 We hope this work could help         enable          
>                 automatic inter-domain path computation based on      
>                               consistent constraints.
>
>
>                 We would be truly grateful for         any        
>                 feedback or suggestions you might have. Thank you so
>                 much                     for your valuable time and
>                 consideration.
>
>
>                 Best Regards,
>
>                 Liyan
>
>                 on behalf of all authors
>
>
>                 ----邮件原文----
>                                     发件人:internet-drafts
>                 <internet-drafts@ietf.org>
>                             收件人:Changwang Lin
>                 <linchangwang.04414@h3c.com>,Jie Dong
>                 <jie.dong@huawei.com>,Liyan Gong
>                 <gongliyan@chinamobile.com>,Ran Chen <chen.ran@zte.com.cn>
>                                     抄 送: (无)
>                                     发送时间:2025-10-20 16:16:19
>                 主题:New Version Notification for draft-gong-idr-inter-domain-srv6-flex-algo-00.txt
>
>                                     A new version of Internet-Draft
>                 draft-gong-idr-inter-domain-srv6-flex-algo-00.txt has been successfully
>                 submitted by Liyan Gong and posted to the
>                                     IETF repository.
>
>                 Name:     draft-gong-idr-inter-domain-srv6-flex-algo
>                                     Revision: 00
>                 Title:    BGP Extensions for Inter-Domain Flexible Algorithm with Segment Routing over IPv6 (SRv6)
>                                     Date:     2025-10-20
>                                     Group:    Individual Submission
>                                     Pages:    6
>                             URL:
>                 https://www.ietf.org/archive/id/draft-gong-idr-inter-domain-srv6-flex-algo-00.txt
>                             Status:
>                 https://datatracker.ietf.org/doc/draft-gong-idr-inter-domain-srv6-flex-algo/
>                             HTMLized:
>                 https://datatracker.ietf.org/doc/html/draft-gong-idr-inter-domain-srv6-flex-algo
>
>
>                                     Abstract:
>
>                    IGP Flexible Algorithm (Flex-Algo) provides a mechanism for IGP nodes
>                    to compute the best paths according to a set of constraints in both
>                    the topology and computation metrics.  Segment Routing over IPv6
>                    (SRv6) can be used as one of the data plane of IGP Flex-Algo.
>
>                    In SRv6 networks, services may be carried across multiple network
>                    domains which are under the same administration.  For some services,
>                    it is expected that the an end-to-end inter-domain path can be
>                    computed according to the same constraints (such as low latency)
>                                        defined by Flex-Algo.
>
>                    This document describes BGP extensions to advertise SRv6 locators as
>                    IPv6 prefixes, together with the associated algorithm across the AS
>                                        boundary.
>
>
>
>                                     The IETF Secretariat
>
>
>
>                 Subject:New Version Notification for draft-gong-idr-inter-domain-srv6-flex-algo-00.txt
>
>                                     A new version of Internet-Draft
>                 draft-gong-idr-inter-domain-srv6-flex-algo-00.txt has been successfully
>                 submitted by Liyan Gong and posted to the
>                                     IETF repository.
>
>                 Name:     draft-gong-idr-inter-domain-srv6-flex-algo
>                                     Revision: 00
>                 Title:    BGP Extensions for Inter-Domain Flexible Algorithm with Segment Routing over IPv6 (SRv6)
>                                     Date:     2025-10-20
>                                     Group:    Individual Submission
>                                     Pages:    6
>                             URL:
>                 https://www.ietf.org/archive/id/draft-gong-idr-inter-domain-srv6-flex-algo-00.txt
>                             Status:
>                 https://datatracker.ietf.org/doc/draft-gong-idr-inter-domain-srv6-flex-algo/
>                             HTMLized:
>                 https://datatracker.ietf.org/doc/html/draft-gong-idr-inter-domain-srv6-flex-algo
>
>
>                                     Abstract:
>
>                    IGP Flexible Algorithm (Flex-Algo) provides a mechanism for IGP nodes
>                    to compute the best paths according to a set of constraints in both
>                    the topology and computation metrics.  Segment Routing over IPv6
>                    (SRv6) can be used as one of the data plane of IGP Flex-Algo.
>
>                    In SRv6 networks, services may be carried across multiple network
>                    domains which are under the same administration.  For some services,
>                    it is expected that the an end-to-end inter-domain path can be
>                    computed according to the same constraints (such as low latency)
>                                        defined by Flex-Algo.
>
>                    This document describes BGP extensions to advertise SRv6 locators as
>                    IPv6 prefixes, together with the associated algorithm across the AS
>                                        boundary.
>
>
>
>                                     The IETF Secretariat
>
>
>
>
>                 _______________________________________________
>                 Idr mailing list --idr@ietf.orgTo unsubscribe send an email toidr-leave@ietf.org
>
>