Re: [spring] SRv6 SID List compression

Dear DT,

Excellent work and many thanks to  the design team to come provide the
detailed analysis of the 4 proposals and how they match up with the
requirements.

>From the analysis it does sound like CSID is the choice by the DT.

SRv6 compression & MSD issue is now finally solved!  Excellent news!!

Now it’s just a matter of moving forward with CSID Adoption poll.

>From the analysis it does not seem there is any draft that is in close 2nd
place or a close call.

>From the analysis draft the two drafts that are combined to create CSID ->
I don’t see it on the Spring WG Datatracker?

https://datatracker.ietf.org/doc/html/draft-srcompdt-spring-compression-analysis-02

The following mechanisms are proposed to compress the SRv6 SID list:

   o  CSID - [I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc
<https://datatracker.ietf.org/doc/html/draft-srcompdt-spring-compression-analysis-02#ref-I-D.filsfilscheng-spring-srv6-srh-comp-sl-enc>]
- Describes
      two new SRv6 SID flavors, a combination of SID flavors from
      [I-D.filsfils-spring-net-pgm-extension-srv6-usid
<https://datatracker.ietf.org/doc/html/draft-srcompdt-spring-compression-analysis-02#ref-I-D.filsfils-spring-net-pgm-extension-srv6-usid>]
and
      [I-D.cl-spring-generalized-srv6-for-cmpr
<https://datatracker.ietf.org/doc/html/draft-srcompdt-spring-compression-analysis-02#ref-I-D.cl-spring-generalized-srv6-for-cmpr>]
   o  CRH - [I-D.bonica-6man-comp-rtg-hdr
<https://datatracker.ietf.org/doc/html/draft-srcompdt-spring-compression-analysis-02#ref-I-D.bonica-6man-comp-rtg-hdr>]
- Requires two new routing
      header types and a label mapping technique.
   o  VSID - [I-D.decraene-spring-srv6-vlsid
<https://datatracker.ietf.org/doc/html/draft-srcompdt-spring-compression-analysis-02#ref-I-D.decraene-spring-srv6-vlsid>]
- Defines a set of SID
      behaviors to access smaller SIDs within the SR header.
   o  UIDSR - [I-D.mirsky-6man-unified-id-sr
<https://datatracker.ietf.org/doc/html/draft-srcompdt-spring-compression-analysis-02#ref-I-D.mirsky-6man-unified-id-sr>]
- Extends the SRH to carry
      MPLS labels or IPv6 addresses.

Below 2 drafts are combined to create CSID??

https://datatracker.ietf.org/doc/html/draft-filsfils-spring-net-pgm-extension-srv6-usid-10

https://datatracker.ietf.org/doc/html/draft-cl-spring-generalized-srv6-for-cmpr-03

Kind Regards

Gyan

On Mon, Jul 26, 2021 at 5:53 PM Darren Dukes (ddukes) <ddukes=
40cisco.com@dmarc.ietf.org> wrote:

> I’ll paraphrase what I said in the call...
>
>
>
> Today the design team presented analysis of proposals to compress an SRv6
> SID list.
>
> They spent a year building the requirements and completing the analysis,
> in depth, with unanimous consensus.
>
> The CSID proposal satisfied all the requirements to the largest degree of
> any proposal.
>
> That proposal has multiple implementations, and interoperability, noted in
> the draft.
>
> That proposal has a large set of SPRING participants working on it already.
>
>
>
> The problem of SRv6 SID list compression is solved, CSID is ready for
> adoption.
>
>
>
> I hope we can conclude this, and choose a single proposal for WG adoption.
>
>
>
> Darren
>
>
>
>
>
>
>
>
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> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>
-- 

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*Gyan Mishra*

*Network Solutions A**rchitect *

*Email gyan.s.mishra@verizon.com <gyan.s.mishra@verizon.com>*

*M 301 502-1347*