[Pce] Re: [Gen-art] draft-ietf-pce-sid-algo-29 ietf last call Genart review

[Gyan Mishra <[e-mail]>]

Dear authors

My initial review state was Almost ready but then I

changed my mind to ready and forgot to update the


stare selection to ready.


*There was one topic I was curious about as this draft was being developed.*


*This draft updates PCEP extension to support flex algo but also extends
the Flex algo RFC 9350 at the same time.  *


*I think the draft should only focus on the PCEP extension for flex algo
and not on updating Flex algo RFC 9350.*


*Although the draft does not state that it is updating RFC 9350, Section
4.5 extension to metric object Provides new FAD metric constraints for the
metric object that it says can be used for flex algo or any path setup even
maybe SR policy. *


*Also the draft mentions section 5.2 and extending 0-127 future use algo to
be used for SR Algo as long as not requiring an explicit extension beyond
Sr Algo.  *


*I think maybe both of these topics belong in a different Flex Algo spec
that updates RFC 9350.*

Thanks

Gyan

On Wed, Oct 22, 2025 at 4:24 PM Gyan Mishra via Datatracker <
[e-mail]> wrote:

> Document: draft-ietf-pce-sid-algo
> Title: Carrying SR-Algorithm in Path Computation Element Communication
> Protocol
> (PCEP) Reviewer: Gyan Mishra Review result: Almost Ready
>
> I am the assigned Gen-ART reviewer for this draft. The General Area
> Review Team (Gen-ART) reviews all IETF documents being processed
> by the IESG for the IETF Chair.  Please treat these comments just
> like any other last call comments.
>
> For more information, please see the FAQ at
>
> <https://wiki.ietf.org/en/group/gen/GenArtFAQ>.
>
> Document: draft-ietf-pce-sid-algo-??
> Reviewer: Gyan Mishra
> Review Date: 2025-10-22
> IETF LC End Date: 2025-09-25
> IESG Telechat date: Not scheduled for a telechat
>
> Summary:
>
> This document specifies extensions to the Path Computation Element
> Communication Protocol (PCEP) to enhance support for Segment Routing (SR)
> with
> a focus on the use of Segment Identifiers (SIDs) and SR-Algorithms in
> Traffic
> Engineering (TE). The SR-Algorithm associated with a SID defines the path
> computation algorithm used by Interior Gateway Protocols (IGPs). It
> introduces
> mechanisms for PCEP peers to signal SR-Algorithm associated with SIDs by
> encoding this information in Explicit Route Object (ERO) and Record Route
> Object (RRO) subobjects, enables SR-Algorithm constraints for path
> computation,
> and defines new metric types for the METRIC object. This document updates
> RFC
> 8664 and RFC 9603 to allow such extensions.
>
> I reviewed the draft and have been following the draft for the last few
> years
> and it is stable and ready for publication.
>
> Major issues:
>
> None
>
> Minor issues:
>
> None
>
> Nits/editorial comments:
>
> None
>
> None
>
>
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