RFC 3376 (rfc3376) - Page 1 of 53
Internet Group Management Protocol, Version 3
Alternative Format: Original Text Document
Network Working Group B. Cain
Request for Comments: 3376 Cereva Networks
Obsoletes: 2236 S. Deering
Category: Standards Track I. Kouvelas
Cisco Systems
B. Fenner
AT&T Labs - Research
A. Thyagarajan
Ericsson
October 2002
Internet Group Management Protocol, Version 3
Status of this Memo
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 (2002). All Rights Reserved.
Abstract
This document specifies Version 3 of the Internet Group Management
Protocol, IGMPv3. IGMP is the protocol used by IPv4 systems to
report their IP multicast group memberships to neighboring multicast
routers. Version 3 of IGMP adds support for "source filtering", that
is, the ability for a system to report interest in receiving packets
*only* from specific source addresses, or from *all but* specific
source addresses, sent to a particular multicast address. That
information may be used by multicast routing protocols to avoid
delivering multicast packets from specific sources to networks where
there are no interested receivers.
This document obsoletes RFC 2236.
Cain, et. al. Standards Track