Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised) (RFC7761)
Original Publication Date: 2016-Mar-01
Included in the Prior Art Database: 2016-Mar-12
Internet Society Requests For Comment (RFCs)
B. Fenner: AUTHOR [+7]
This document specifies a protocol for efficiently routing multicast groups that may span wide-area (and inter-domain) internets. This protocol is called Protocol Independent Multicast - Sparse Mode (PIM-SM) because, although it may use the underlying unicast routing to provide reverse-path information for multicast tree building, it is not dependent on any particular unicast routing protocol.
Internet Engineering Task Force (IETF) B. Fenner
Request for Comments: 7761 Arista Networks
STD: 83 M. Handley
Obsoletes: 4601 UCL
Category: Standards Track H. Holbrook
ISSN: 2070-1721 I. Kouvelas
Cisco Systems, Inc.
Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised)
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.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information...