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Re: [Bier] WGLC: draft-ietf-bier-php

"Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com> Wed, 26 August 2020 01:22 UTC

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From: "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com>
To: Greg Shepherd <gjshep@gmail.com>, "bier@ietf.org" <bier@ietf.org>
Thread-Topic: [Bier] WGLC: draft-ietf-bier-php
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Date: Wed, 26 Aug 2020 01:21:45 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/bier/OhFHg1KF6bSdtfjiYzOkZU0MbQE>
Subject: Re: [Bier] WGLC: draft-ietf-bier-php
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Hi,

Support.

Few comments below:

==> The below text appears to give an impression that the router is BIER incapable at both control plane and data plane. This either can be clarified or can include a terminology explaining what it is.

“A BIER-incapable router, if acting as a multicast flow overlay
   router, MUST signal its BIER information as specified in [RFC8401] or
   [RFC8444] or [I-D.ietf-bier-idr-extensions]”

==> Section 2.1.1.1 of RFC8296 states that PHP MUST NOT be applied to BIER-MPLS-Label. While the below statement mandates the signaling of Imp-Null (which is to enable PHP). So I think the draft should update RFC8296?.

“With MPLS encapsulation, the BIER-incapable multicast flow overlay
   router MAY omit the BIER MPLS Encapsulation sub-sub-TLV, or MUST set
   the Label field in BIER MPLS Encapsulation sub-sub-TLV to Implicit
   Null Label [RFC3032].”

Regards,
Nagendra

From: BIER <bier-bounces@ietf.org> on behalf of Greg Shepherd <gjshep@gmail.com>
Date: Wednesday, August 12, 2020 at 11:31 PM
To: "bier@ietf.org" <bier@ietf.org>
Subject: [Bier] WGLC: draft-ietf-bier-php


Please read and respond to this thread. We had a WGLC for this draft previously, but had no response. Let’s do better.

https://datatracker.ietf.org/doc/draft-ietf-bier-php/

Start of short LC timer. Respond by Aug 19..

- Shep
(Chairs)

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