Dear WG,
This email is to provide further information on the changes to Sec. 7 and 9 in draft-ietf-spring-srv6-srh-compression-04. The new text in Sec. 7 describes how a C-SID compliant SR source node may turn an uncompressed segment list comprising C-SID flavored SIDs into a compressed segment list. An uncompressed segment list may contain a combination of NEXT-C-SID and REPLACE-C-SID flavored SIDs, but also any other SID defined in other documents (e.g., RFC 8986). Compression of sequences of NEXT-C-SID flavored SIDs and sequences of REPLACE-C-SID flavored SIDs are described. The new text in Sec. 9 clarifies that an SR source node requires SID structure information to perform the compression of a segment list provided in uncompressed format. Thanks, Francois (on behalf of the C-SID co-authors) On Tue, Apr 4, 2023 at 7:00 PM Francois Clad <fclad.i...@gmail.com> wrote: > 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-dra...@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 >> >
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