RFC 7761
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 Arista Networks R. Parekh Cisco Systems, Inc. Z. Zhang Juniper Networks L. Zheng Huawei Technologies March 2016 Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised) Abstract 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…