RFC 8364

PIM Flooding Mechanism (PFM) and Source Discovery (SD), March 2018

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Updated by:
RFC 8736
IJ. Wijnands
S. Venaas
M. Brig
A. Jonasson
pim (rtg)

Cite this RFC: TXT  |  XML

DOI:  10.17487/RFC8364

Discuss this RFC: Send questions or comments to pim@ietf.org

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Protocol Independent Multicast - Sparse Mode (PIM-SM) uses a Rendezvous Point (RP) and shared trees to forward multicast packets from new sources. Once Last-Hop Routers (LHRs) receive packets from a new source, they may join the Shortest Path Tree (SPT) for the source for optimal forwarding. This document defines a new mechanism that provides a way to support PIM-SM without the need for PIM registers, RPs, or shared trees. Multicast source information is flooded throughout the multicast domain using a new generic PIM Flooding Mechanism (PFM). This allows LHRs to learn about new sources without receiving initial data packets.

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.