PIM Flooding Mechanism and Source Discovery
RFC 8364, “PIM Flooding Mechanism and Source Discovery”, is an Experimental document published in March 2018 by IJ. Wijnands, S. Venaas, M. Brig, A. Jonasson. It has since been updated by RFC 8736, RFC 9436. The canonical text is published by the RFC Editor.
Abstract
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.
What “Experimental” means
Describes a specification that is part of a research or development effort, published so the community can gain experience with it.
The canonical text of RFC 8364 is hosted at rfc-editor.org. Available in TXT,HTML.
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