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

This specification has been revised 4 times since RFC 2117 (1997). Each document below formally obsoleted the one before it; the versions still in force are listed first.

This lineage is derived automatically from the “obsoletes” relationships recorded in the public RFC Editor index — no editorial judgement is applied to the ordering. The most recent document in the chain is RFC 7761 (March 2016).