Re: [spring] I-D Action: draft-ietf-spring-srv6-srh-compression-04.txt

Francois Clad <fclad.ietf@gmail.com> Tue, 04 April 2023 17:00 UTC

Return-Path: <fclad.ietf@gmail.com>
X-Original-To: spring@ietfa.amsl.com
Delivered-To: spring@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 627CBC1522AF for <spring@ietfa.amsl.com>; Tue, 4 Apr 2023 10:00:30 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.094
X-Spam-Level:
X-Spam-Status: No, score=-2.094 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, RCVD_IN_ZEN_BLOCKED_OPENDNS=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, URIBL_DBL_BLOCKED_OPENDNS=0.001, URIBL_ZEN_BLOCKED_OPENDNS=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 ([50.223.129.194]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id D_Vhys1w4qTv for <spring@ietfa.amsl.com>; Tue, 4 Apr 2023 10:00:26 -0700 (PDT)
Received: from mail-oi1-x235.google.com (mail-oi1-x235.google.com [IPv6:2607:f8b0:4864:20::235]) (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 ietfa.amsl.com (Postfix) with ESMTPS id 822A6C1522D3 for <spring@ietf.org>; Tue, 4 Apr 2023 10:00:25 -0700 (PDT)
Received: by mail-oi1-x235.google.com with SMTP id l18so24674820oic.13 for <spring@ietf.org>; Tue, 04 Apr 2023 10:00:25 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; t=1680627624; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :from:to:cc:subject:date:message-id:reply-to; bh=TDTthV8D/XNQJwt7hz034fupc5OZBWzoVnVubKCY9oQ=; b=e2q78BQ8jJxM5CvtXd9BFQ3vh4bUnhPnSduYYPI8xj/ofc5sgPOWscPrmp9U0TOtWS 942VR/x4k182cquYberAru5nBJmGr2sGQucSjMEv1E3jovucPQuIpNBVbICAQ1hGPFvi OzaXfNAsrNu98VTNPN7rcsAJMVm5Oo+D/T07GeYJrdZm1/Th+yH2w979DTBVe69DfVFZ lMnj+sUdnWrXhUD1MJwNL9hrozNb8ymAKQRYVU2FG8cL+nFi11/5iTbwcBwwnYgASU1N EnWEucKlFCDNujcxSd5zJipZznIbV9jvkjuwW3FHzlD8pdEjjzwlKGneT2LEoQLXo2FP LKOw==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1680627624; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=TDTthV8D/XNQJwt7hz034fupc5OZBWzoVnVubKCY9oQ=; b=kMcjFoPknkAyaTwxj05ypFXSSRC2eySDOuoyWsFQQlnrNzAuXIXwi9XNFJhtOCqaAH kWGZG2mkEkFOUWKVW3bcxkYR31ZYKFFV3GpjJF+xO3nqmKVr4ZTF7AgvG/HRLhM26q5h 69xG91fuKKEco3ETantGUxjLyd6vG2Tu9gk6jnCj/NCUq50NG+VR0gltj2sqbMSZsM1y 4COWjX13YlYiOdAgpyi/hCECcz+XnlNWyI3tJTOtLnc8iX+Ozh1OY34+yA/EEI0krUMY RiGai9Gdn0lMQsWPeZKe4kv1moJqUiofneDgeFy7Db5QNNVzZW7zOzKUKNQmVPxLFGIv 3/Iw==
X-Gm-Message-State: AAQBX9eg7hYGPTrbLbh9Qgzhk53xCRUG30zumbUoMxmv78qpRRRxygq8 +nvwzx1OrB+EAFCagv8XGYTf9dwRs/ixbkI7dHZ3ATWsQ3MKcCg=
X-Google-Smtp-Source: AKy350agjvkDXrOQC3FewY6AmUxqVs1xJ3c0hkKZqw1YWTUGFu/S6l3t6Z9L3VcP38PCAtTj+TgGfU4sNXLusfjIb3o=
X-Received: by 2002:a05:6808:1787:b0:384:6d14:c707 with SMTP id bg7-20020a056808178700b003846d14c707mr1064456oib.5.1680627624033; Tue, 04 Apr 2023 10:00:24 -0700 (PDT)
MIME-Version: 1.0
References: <168029812629.3719.14041664719452852383@ietfa.amsl.com>
In-Reply-To: <168029812629.3719.14041664719452852383@ietfa.amsl.com>
From: Francois Clad <fclad.ietf@gmail.com>
Date: Tue, 04 Apr 2023 19:00:12 +0200
Message-ID: <CAHT6gR_OGKqmkXTHj6=F56+FEwT9oHpvp40ffAs8PUOjMC8QgQ@mail.gmail.com>
To: spring@ietf.org
Content-Type: multipart/alternative; boundary="00000000000087bf6705f8859c93"
Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/CjOygm5Db1SnwESHB_k2DCR5UPs>
Subject: Re: [spring] I-D Action: draft-ietf-spring-srv6-srh-compression-04.txt
X-BeenThere: spring@ietf.org
X-Mailman-Version: 2.1.39
Precedence: list
List-Id: "Source Packet Routing in NetworkinG \(SPRING\)" <spring.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/spring>, <mailto:spring-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/spring/>
List-Post: <mailto:spring@ietf.org>
List-Help: <mailto:spring-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/spring>, <mailto:spring-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 04 Apr 2023 17:00:30 -0000

Dear WG,



This revision includes significant text changes following the continuous
and very constructive feedback that we received from many WG participants.



A summary of the changes is provided below. The authors will also send
separate emails with further detail on the most important text changes.



- Following feedback from Gyan and others [1], renamed and expanded Sec. 7
(was: Efficient SID-list Encoding; now: SR Source Node) and Sec. 9 (Control
Plane) to describe the method by which an SR source node may leverage the
SID flavors in this document to encode a compressed SRv6 Segment List in
the SRH.

- Following offline feedback from WG participants before and during IETF
116, expanded Sec. 4 to specify the C-SID flavors applicability to the
other SR intermediate endpoint behaviors in RFC 8986, namely End.T,
End.B6.Encaps, End.B6.Encaps.Red, and End.BM. Updated the IANA
consideration accordingly.

- Following comments from Qiangzhou and other WG participants before
IETF116, modified REPLACE-C-SID flavor for End and End.X (argument format
and packet processing when the next C-SID value is 0).

- Added End.DX* and End.DT* for REPLACE-C-SID flavor.

- Following numerous questions from WG participants and implementers, added
Sec. 6.4 with guidelines for installing C-SID flavored SIDs in FIBs.

- For the same reason, also added the complete pseudocodes for End with
NEXT-C-SID and End with REPLACE-C-SID in Appendix B.

- Added new implementation reports received by the authors since the last
revision (Nokia, Arrcus, Marvell, Broadcom, ZTE, H3C, and Ruijie Network).

- NEXT-and-REPLACE-C-SID was removed from this version of the draft due to
lack of implementation.

- Various editorial fixes and addition of a new contributor.



The authors would like once again to thank everyone who provided feedback
or contributed text to this document.



Thanks,

Francois (on behalf of the C-SID co-authors)



[1]:
https://mailarchive.ietf.org/arch/msg/spring/aw56JRv8hPbRZEByguBaVZSNQBs/

On Fri, Mar 31, 2023 at 11:29 PM <internet-drafts@ietf.org> wrote:

>
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories. This Internet-Draft is a work item of the Source Packet
> Routing
> in Networking (SPRING) WG of the IETF.
>
>    Title           : Compressed SRv6 Segment List Encoding in SRH
>    Authors         : Weiqiang Cheng
>                      Clarence Filsfils
>                      Zhenbin Li
>                      Bruno Decraene
>                      Francois Clad
>    Filename        : draft-ietf-spring-srv6-srh-compression-04.txt
>    Pages           : 45
>    Date            : 2023-03-31
>
> Abstract:
>    This document specifies new flavors for the SR endpoint behaviors
>    defined in RFC 8986, which enable a compressed SRv6 Segment-List
>    encoding in the Segment Routing Header (SRH).
>
> The IETF datatracker status page for this Internet-Draft is:
> https://datatracker.ietf.org/doc/draft-ietf-spring-srv6-srh-compression/
>
> There is also an htmlized version available at:
>
> https://datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-srh-compression-04
>
> A diff from the previous version is available at:
>
> https://author-tools.ietf.org/iddiff?url2=draft-ietf-spring-srv6-srh-compression-04
>
> Internet-Drafts are also available by rsync at rsync.ietf.org:
> :internet-drafts
>
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>