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[pim] Re: draft-ietf-pim-pfm-forwarding-enhancements-00.txt

"Stevens, Jim A Collins" <James.A.Stevens@collins.com> Fri, 02 August 2024 23:44 UTC

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From: "Stevens, Jim A Collins" <James.A.Stevens@collins.com>
To: "pim@ietf.org" <pim@ietf.org>
Thread-Topic: draft-ietf-pim-pfm-forwarding-enhancements-00.txt
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Date: Fri, 02 Aug 2024 23:44:29 +0000
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Subject: [pim] Re: draft-ietf-pim-pfm-forwarding-enhancements-00.txt
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> Date: Mon, 22 Jul 2024 11:16:16 -0700
> Subject: [pim] I-D Action:
>       draft-ietf-pim-pfm-forwarding-enhancements-00.txt
> Internet-Draft draft-ietf-pim-pfm-forwarding-enhancements-00.txt is now
> available. It is a work item of the Protocols for IP Multicast (PIM) WG of the
> IETF.
>
>    Title:   PIM Flooding Mechanism and Source Discovery Enhancements
>
> The IETF datatracker status page for this Internet-Draft is:
> https://urldefense.com/v3/__https://datatracker.ietf.org/doc/draft-ietf-pim-
> pfm-forwarding-enhancements/__;!!MvWE!HI_-
> Lj9Ci4nSpetHlhVhcx892mBjEzRZ9DWWYmxk62IpTp6izur_9o2RT-
> zlGuKimbrO70wuxV3JRqd9RRU0Z0Cy_c9QLhJY$
>
This draft references RFC 8364 which defined PIM Flooding Mechanism and Source Discovery and says that it is "a lightweight source discovery mechanism on top of the Source-Specific Multicast (SSM) [RFC4607] parts of PIM-SM"

This implies to me that PIM Flooding Mechanism and Source Discovery is only valid for Sparse Mode and not for Any Source Mode (ASM).

Is that correct?

If yes, then the draft needs to explain that this RFC is only relevant to PIM-SM & the title should be changed to PIM-SSM Flooding Mechanism & Source Discovery.  For example, this would not apply to ASM and other versions of PIM such as BIDIR-PIM.

If no, then the draft should provide examples of uses for PIM Flooding Mechanism and Source Discovery for ASM operations as well.  (and in hindsight if there are applications to ASM, then RFC 8364 should be updated or maybe have errata added?

Jim

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