Hi Les,
Thanks for your comments.
Please see inline [PSF].
Regards,
PSF
------------------原始邮件------------------
发件人：LesGinsberg(ginsberg)
收件人：Christian Hopps;[email protected];
日 期 ：2021年06月02日 13:04
主 题 ：Re: [Lsr] LSR WG Adoption Call for "Algorithm Related IGP-Adjacency SID
Advertisement"
I support adoption of this draft.
I believe that there are use cases for algorithm specific adjacency-sids -
primarily (and non-controversially) to provide algorithm specific repair paths.
As others have commented, other use cases mentioned in this draft involve
introducing significant new functionality which has not been discussed or
accepted by the WG (e.g., resource allocation). This topic deserves to be
reviewed by the WG on its own merit in a separate draft.
[PSF] OK. Indeed, we should agree on use-case 2/3, because an adjacency-sid of
TI-LFA path need further adjacency backup path for protection. And, put aside
resource reservation, based on use-case 2, we can also do more things, for
example, statistics of traffic of different algorithms on the same link.
This draft should confine itself to defining the new advertisements required to
support algorithm specific adjacency-sids and discussing the repair path use
case.
I would also like to see some discussion of deployment considerations including:
a)When to allocate/advertise algorithm specific adjacency-sids vs when to
continue to use algorithm independent adjacency sids.
b)Strict-SID algo-sids are not useful
c)Use case should drive the type(s) of algorithm specific adjacency-sids
allocated/advertised. For example, if primary use case is for algorithm
specific repair paths, then only sids with B flag set ("eligible for
protection") are required.
[PSF] Thanks for these constructive suggestions. We will improve it in later
versions. : )
Simply allocating algorithm specific adjacency SIDs for all supported
algorithms all the time is a recipe for bloating the protocol link
advertisements unnecessarily.
[PSF] OK, we will give the recommended option.
Les
> -----Original Message-----
> From: Lsr <[email protected]> On Behalf Of Christian Hopps
> Sent: Wednesday, May 26, 2021 1:57 PM
> To: [email protected]
> Cc: [email protected]
> Subject: [Lsr] LSR WG Adoption Call for "Algorithm Related IGP-Adjacency SID
> Advertisement"
>
>
> Hi Folks,
>
> This begins a 2 week WG Adoption Call for the following draft:
>
> https://datatracker.ietf.org/doc/draft-peng-lsr-algorithm-related-adjacency-
> sid/
>
> Please indicate your support or objections by June 9th, 2021
>
> Authors, please respond to the list indicating whether you are aware of any
> IPR
> that applies to this draft.
>
> Thanks,
> Acee and Chris.
>
> _______________________________________________
> Lsr mailing list
> [email protected]
> https://www.ietf.org/mailman/listinfo/lsr
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