Task Force Inter - Domain Multicast Routing Working Group INTERNET - DRAFT Brad

This document specifies Version 3 of the Internet Group Management Protocol, IGMPv3. IGMP is the protocol used by IP 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 is a product of the Inter-Domain Multicast Routing working group within the Internet Engineering Task Force. Comments are solicited and should be addressed to the working group’s mailing list at [email protected] and/or the author(s). Cain, Deering, Thyagarajan Expires May 1997 [Page 1]