From: "Hooman Bidgoli (Nokia)" <hooman.bidgoli@nokia.com>
To: Mike Koldychev <mkoldych@proton.me>, Dhruv Dhody <dd@dhruvdhody.com>
Thread-Topic: [Pce] WG Last Call for draft-ietf-pce-sr-p2mp-policy-19 (Ends
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CC: "Andrew Stone (Nokia)" <andrew.stone@nokia.com>,
 "draft-ietf-pce-sr-p2mp-policy@ietf.org"
 <draft-ietf-pce-sr-p2mp-policy@ietf.org>,
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Hi Mike

Appreciate you taking time and reviewing this document! We addressed some o=
f your comments and will publish it in the next version.

Inline

Regards
Hooman


-----Original Message-----
From: Mike Koldychev <mkoldych@proton.me>=20
Sent: Tuesday, August 18, 2026 11:38 AM
To: Dhruv Dhody <dd@dhruvdhody.com>
Cc: Andrew Stone (Nokia) <andrew.stone@nokia.com>; draft-ietf-pce-sr-p2mp-p=
olicy@ietf.org; pce-chairs@ietf.org; pce@ietf.org
Subject: Re: [Pce] WG Last Call for draft-ietf-pce-sr-p2mp-policy-19 (Ends =
2026-08-04)


CAUTION: This is an external email. Please be very careful when clicking li=
nks or opening attachments. See the URL nok.it/ext for additional informati=
on.


I have read the latest version and support progression to RFC. Some minor f=
eedback:

Section 4.1:
 * What is "global optimization"? If same as MBB, then why need 2 terms?

HB> I tried to clean up the explanation and that entire bullet point is cle=
aned up.


Section 4.2:
 * Clearly separate key vs non-key data.

HB> not sure if I fully follow this, in PCEP there is no key the objects ar=
e with PLSP ID which this section is not talking about. Could you please be=
 more specific what you think we should do here.

Maximum number of PTIs:
 * I'm not sure it's a good idea to restrict the number of PTIs to maximum =
of 2. For example in my experience with RSVP-TE, there is a need to have 3 =
LSPs: cleanup, active and reopt. The cleanup serves to "drain" any left ove=
r traffic when there is a series of back-to-back path switches.

HB> we made it 1 or more.=20

Section 4.2.1:
 "each PTI within a CP of an SR P2MP Policy should use the same Instance-ID=
 across the tree on its Root, Transit, and Leaf nodes when programming its =
replication segments on the PCC."  <-- is this really a "should"? I would t=
hink it's a "MUST"? Or are they allowed to be different numbers on differen=
t nodes? Would be simpler if it was forced to be the same number.

HB> we talked it over and kept it as a SHOULD but add explanation why we re=
commend the instance ID to be constant over the tree's path.


Thanks,
Mike.


On Tuesday, July 7th, 2026 at 6:11 AM, Dhruv Dhody via Datatracker <noreply=
@ietf.org> wrote:

> This message starts a WG Last Call for: draft-ietf-pce-sr-p2mp-policy-19
>
> This Working Group Last Call ends on 2026-08-04 (intentionally longer to =
accommodate IETF126 and travels)
>
> Abstract:
>    Segment Routing (SR) Point-to-Multipoint (P2MP) Policies are a set of
>    policies that enable architecture for P2MP service delivery.  This
>    document specifies extensions to the Path Computation Element
>    Communication Protocol (PCEP) that allow a stateful PCE to compute
>    and initiate P2MP paths for SR-MPLS from a Root to a set of Leaf
>    nodes.
>
> Please indicate your support or concern for this draft on the mailing lis=
t. If you are opposed to the progression of the draft to RFC, please articu=
late your concern. If you support it, please indicate that you have read th=
e latest version and that it is ready for publication in your opinion. As a=
lways, review comments and nits are most welcome.
>
> A general reminder to the WG to be more vocal during the last-call/adopti=
on.
>
> Thanks,
> Dhruv & Julien
>
> The IETF datatracker status page for this Internet-Draft is:
> https://datatracker.ietf.org/doc/draft-ietf-pce-sr-p2mp-policy/
>
> There is also an HTMLized version available at:
> https://datatracker.ietf.org/doc/html/draft-ietf-pce-sr-p2mp-policy-19
>
> A diff from the previous version is available at:
> https://author-tools.ietf.org/iddiff?url2=3Ddraft-ietf-pce-sr-p2mp-policy=
-19
>
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