[pim] draft-ietf-pim-pfm-forwarding-enhancements-04.txt and BIDIR-PIM?

"Stevens, Jim " <[email protected]> Tue, 5 May 2026 15:00:55 +0000
Newsgroups gmane.ietf.pim
Message-ID <SA1P110MB1878743A9B702CA4240B2EA9B03EA@SA1P110MB1878.NAMP110.PROD.OUTLOOK.COM>
With respect to:



   Title:   PIM Flooding Mechanism and Source Discovery Enhancements

   Authors: Ananya Gopal

            Stig Venaas

            Francesco Meo

   Name:    draft-ietf-pim-pfm-forwarding-enhancements-04.txt

   Pages:   12

   Dates:   2026-05-04



Abstract:



   The Protocol Independent Multicast (PIM) Flooding Mechanism (PFM)

   provides a generic hop-by-hop message exchange framework for

   distributing multicast information among PIM routers.  Existing PFM

   procedures enable efficient source discovery without reliance on

   Rendezvous Points, shared trees, or initial data registers.



   This document specifies enhancements to PFM forwarding behavior to

   improve efficiency and scalability.  In particular, it introduces

   mechanisms to reduce redundant message transmission over multiple

   parallel links and extends the encoding of multicast information

   through additional Type-Length-Value (TLV) structures and sub-TLVs to

   convey richer flow-related data.  These enhancements optimize

   control-plane overhead while preserving interoperability with

   existing PFM procedures, enabling more efficient dissemination of

   multicast state in PIM networks.



The IETF datatracker status page for this Internet-Draft is:

https://urldefense.us/v2/url?u=https-3A__datatracker.ietf.org_doc_draft-2Dietf-2Dpim-2Dpfm-2Dforwarding-2Denhancements_&d=DwIGaQ&c=MASr1KIcYm9UGIT-jfIzwQg1YBeAkaJoBtxV_4o83uQ&r=iyrI8diTo-IzLTJTCiTPKlD-K8LuYDK9V9WSAQ1TDHwuV2lh7gz-ih2nd1etPTFY&m=rDlOyJVBxtHlDnQ_8nXVWD0bsNHj_UliDG_152snSyt43Kr4DVkBhSQ_VDFHw0w0&s=i3gaMDLm5OBU8EowS9O8Cx-Hj-pp7Ia37ZyyffI_yng&e=



Does, this RFC apply to bidirectional-pim (BIDIR-PIM)?



If no, then I recommend that this RFC state that it does not apply to BIRDIR-PIM

If yes, then I recommend that this RFC state how it applies to BIRDIR-PIM



Jim Stevens

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