RFC - 4604

Using Internet Group Management Protocol Version 3 (IGMPv3) and Multicast Listener Discovery Protocol Version 2 (MLDv2) for Source-Specific Multicast

Original:	ftp://ftp.isi.edu/in-notes/rfc4604.txt
Authors:	H. Holbrook [Arastra, Inc.], B. Cain [Acopia Networks], B. Haberman [JHU APL]
Date:	August 2006
Category:	Proposed Standard

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Updates:
RFC-3810prop	Multicast Listener Discovery Version 2 (MLDv2) for IPv6 (Updated by RFC-4604prop)
RFC-3376prop	Internet Group Management Protocol, Version 3 (Updated by RFC-4604prop)

Referred by:	2 RFC
Refers to:	9 RFC

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Status

This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (2006).

Abstract

The Internet Group Management Protocol Version 3 (IGMPv3) and the Multicast Listener Discovery Protocol Version 2 (MLDv2) are protocols that allow a host to inform its neighboring routers of its desire to receive IPv4 and IPv6 multicast transmissions, respectively. Source-specific multicast (SSM) is a form of multicast in which a receiver is required to specify both the network-layer address of the source and the multicast destination address in order to receive the multicast transmission. This document defines the notion of an "SSM-aware" router and host, and clarifies and (in some cases) modifies the behavior of IGMPv3 and MLDv2 on SSM-aware routers and hosts to accommodate source-specific multicast. This document updates the IGMPv3 and MLDv2 specifications.

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