STD 83

RFC 7761

Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised), March 2016

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RFC 4601
Updated by:
RFC 8736, RFC 9436
B. Fenner
M. Handley
H. Holbrook
I. Kouvelas
R. Parekh
Z. Zhang
L. Zheng
pim (rtg)

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This document specifies Protocol Independent Multicast - Sparse Mode (PIM-SM). PIM-SM is a multicast routing protocol that can use the underlying unicast routing information base or a separate multicast-capable routing information base. It builds unidirectional shared trees rooted at a Rendezvous Point (RP) per group, and it optionally creates shortest-path trees per source.

This document obsoletes RFC 4601 by replacing it, addresses the errata filed against it, removes the optional (*,*,RP), PIM Multicast Border Router features and authentication using IPsec that lack sufficient deployment experience (see Appendix A), and moves the PIM specification to Internet Standard.

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.

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