I-D Action: draft-ietf-pim-pfm-forwarding-enhancements-08.txt
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Internet-Draft draft-ietf-pim-pfm-forwarding-enhancements-08.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
Authors: Ananya Gopal
Stig Venaas
Francesco Meo
Name: draft-ietf-pim-pfm-forwarding-enhancements-08.txt
Pages: 13
Dates: 2026-08-25
Abstract:
The Protocol Independent Multicast (PIM) Flooding Mechanism (PFM) is
an experimental extension that 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 further experimental 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://datatracker.ietf.org/doc/draft-ietf-pim-pfm-forwarding-enhancements/
There is also an HTMLized version available at:
https://datatracker.ietf.org/doc/html/draft-ietf-pim-pfm-forwarding-enhancements-08
A diff from the previous version is available at:
https://author-tools.ietf.org/iddiff?url2=draft-ietf-pim-pfm-forwarding-enhancements-08
Internet-Drafts are also available by rsync at:
rsync.ietf.org::internet-drafts
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