The IESG has received a request from the Protocols for IP Multicast WG (pim) to consider the following document: - 'PIM Flooding Mechanism and Source Discovery Enhancements' <draft-ietf-pim-pfm-forwarding-enhancements-05.txt> as Experimental RFC
The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the [email protected] mailing lists by 2026-05-21. Exceptionally, comments may be sent to [email protected] instead. In either case, please retain the beginning of the Subject line to allow automated sorting. 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 file can be obtained via https://datatracker.ietf.org/doc/draft-ietf-pim-pfm-forwarding-enhancements/ No IPR declarations have been submitted directly on this I-D. _______________________________________________ IETF-Announce mailing list -- [email protected] To unsubscribe send an email to [email protected]
