RE: Adoption Call for "The IPv6 Compact Routing Header (CRH)"

Ron Bonica <rbonica@juniper.net> Tue, 26 May 2020 16:25 UTC

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From: Ron Bonica <rbonica@juniper.net>
To: stefano previdi <stefano@previdi.net>, Bob Hinden <bob.hinden@gmail.com>, IPv6 List <ipv6@ietf.org>
Subject: RE: Adoption Call for "The IPv6 Compact Routing Header (CRH)"
Thread-Topic: Adoption Call for "The IPv6 Compact Routing Header (CRH)"
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Stephano,

The drafts that you mention below can be categorized as follows:

- those that are entirely independent of the SRv6 architecture
- those thar are entirely dependent upon the SRv6 architecture

The CRH falls into the first category because it does not rely upon instructions being encoded in the IPv6 destination address. It assumes RFC 4291 address semantics.

All of the other drafts rely on some special interpretation of the IPv6 address. Either:

- The IPv6 address includes an instruction that describes how subsequent routing headers are to be processed
- The IPv6 address represents a path instead of an interface

For that reason, it makes sense to:

- progress the CRH draft, independently of SRv6
- let the SPRING WG evaluate the other drafts and send one of them to 6man.

                                                                                   Ron







Juniper Business Use Only

-----Original Message-----
From: ipv6 <ipv6-bounces@ietf.org> On Behalf Of stefano previdi
Sent: Tuesday, May 26, 2020 9:40 AM
To: Bob Hinden <bob.hinden@gmail.com>om>; IPv6 List <ipv6@ietf.org>
Subject: Re: Adoption Call for "The IPv6 Compact Routing Header (CRH)"

[External Email. Be cautious of content]


Hi,

As author of the original SRH proposal, I follow with quite some interest the discussion around the need of compression of the segment list. At this stage I see at least 4 proposals, each of which brings some valid and interesting arguments:
. draft-bonica-6man-comp-rtg-hdr
. draft-decraene-spring-srv6-vlsid
. draft-lc-6man-generalized-srh
. draft-filsfils-spring-net-pgm-extension-srv6-usid
. (maybe there are more...)

Also, it looks to me that the ongoing discussion is focused only on one of the above. Are we going to re-spin the same debate for each of these or do we want the WG to conduct an analysis on all of them prior to select one (or maybe two) that would be candidate for adoption ? Certainly, I’d prefer the latter.

So, at this stage I don't support the adoption of draft-bonica-6man-comp-rtg-hdr and would prefer to see the WG to start an exhaustive analysis on all of the proposals.

Thanks.
s.


> On May 16, 2020, at 12:13 AM, Bob Hinden <bob.hinden@gmail.com> wrote:
>
> This message starts a two-week 6MAN call on adopting:
>
> Title:          The IPv6 Compact Routing Header (CRH)
> Authors:        R. Bonica, Y. Kamite, T. Niwa, A. Alston, L. Jalil
> File Name:      draft-bonica-6man-comp-rtg-hdr-21
> Document date:  2020-05-14
>
> https://urldefense.com/v3/__https://tools.ietf.org/html/draft-bonica-6man-comp-rtg-hdr__;!!NEt6yMaO-gk!S1aUaf8ierFVerfLLA2pLHDrMNPcbbuXLHgUr_2D-ggrgxdFATJJn5IQ8I19DrKX$
>
> as a working group item. Substantive comments regarding adopting this document should be directed to the mailing list.  Editorial suggestions can be sent to the authors.
>
> Please note that this is an adoption call, it is not a w.g. last call for advancement, adoption means that it will become a w.g. draft.  As the working group document, the w.g. will decide how the document should change going forward.
>
> This adoption call will end on 29 May 2020.
>
> The chairs note there has been a lot of discussions on the list about this draft.   After discussing with our area directors, we think it is appropriate to start a working group adoption call.  The authors have been active in resolving issues raised on the list.
>
> Could those who are willing to work on this document, either as contributors, authors or reviewers please notify the list.   That gives us an indication of the energy level in the working group
> to work on this.
>
> Regards,
> Bob and Ole
>
>
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