[lisp] Re: IETF LISP Multicast Reviews

"Raphael Lienard (rlienard)" <rlienard@cisco.com> Mon, 11 November 2024 15:52 UTC

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From: "Raphael Lienard (rlienard)" <rlienard@cisco.com>
To: "lisp@ietf.org" <lisp@ietf.org>
Thread-Topic: IETF LISP Multicast Reviews
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Date: Mon, 11 Nov 2024 15:52:14 +0000
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Subject: [lisp] Re: IETF LISP Multicast Reviews
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Hi Team,

I have been reviewing the draft-ietf-lisp-group-mapping-00 as requested by Alberto and I didn’t find any conceptual issues for now.
I spotted a few typos :

2. <https://datatracker.ietf.org/doc/html/draft-ietf-lisp-group-mapping-00#section-2> Introduction<https://datatracker.ietf.org/doc/html/draft-ietf-lisp-group-mapping-00#name-introduction>
            1. A 1:1 mapping of  a  an overlay multicast flow, either a (Source, Group) or (*, Group) to an underlay group.

4. <https://datatracker.ietf.org/doc/html/draft-ietf-lisp-group-mapping-00#section-4> Source Site Procedures<https://datatracker.ietf.org/doc/html/draft-ietf-lisp-group-mapping-00#name-source-site-procedures>
The Source Site Procedures from [I-D.farinacci-lisp-rfc8378bis<https://datatracker.ietf.org/doc/html/draft-farinacci-lisp-rfc8378bis-00>] are followed for overlay nodes and [I-D.farinacci-lisp-rfc6831bis<https://datatracker.ietf.org/doc/html/draft-farinacci-lisp-rfc6831bis-02>] for non-overlay nodes. There are no modifications to these procedures other than the source multicast site -ITR should be capable of replicating to multiple G-RLOC and U-RLOC addresses from its map-cache.

5. <https://datatracker.ietf.org/doc/html/draft-ietf-lisp-group-mapping-00#section-5> Hashed Based Underlay Group Selection<https://datatracker.ietf.org/doc/html/draft-ietf-lisp-group-mapping-00#name-hashed-based-underlay-group>
When an ETR receives an IGMP/MLD report it needs to decide which G-RLOC to underlay join to join in the underlay.

7. <https://datatracker.ietf.org/doc/html/draft-ietf-lisp-group-mapping-00#section-7> Receiver Site Procedures<https://datatracker.ietf.org/doc/html/draft-ietf-lisp-group-mapping-00#name-receiver-site-procedures>
The Receiver Site Procedures from [I-D.farinacci-lisp-rfc8378bis<https://datatracker.ietf.org/doc/html/draft-farinacci-lisp-rfc8378bis-00>] are followed. This draft adds an additional step to the procedure on how should to select the G-RLOC address for registration.

Best regards,

Raphael

From: Alberto Rodriguez-Natal (natal) <natal@cisco.com>
Date: Wednesday, 23 October 2024 at 23:38
To: lisp-chairs@ietf.org <lisp-chairs@ietf.org>
Cc: Raphael Lienard (rlienard) <rlienard@cisco.com>, Marc Portoles Comeras (mportole) <mportole@cisco.com>
Subject: IETF LISP Multicast Reviews
Hi Luigi, Padma,

I spoke with Raphael and Marc, they both have multicast expertise and are willing to take a quick look at the multicast documents (below)

draft-ietf-lisp-rfc6831bis-00
draft-ietf-lisp-rfc8378bis-00
draft-ietf-lisp-group-mapping-00

Thanks a lot for the help here folks! Any preference on which draft to take a look at?

Thanks!
Alberto