Complete Protocol dictionary, glossary and reference

IGMP: Internet Group Management Protocol

Internet Group Management Protocol (IGMP), a multicasting protocol in the internet protocols family, is used by IP hosts to report their host group memberships to any immediately neighboring multicast routers. IGMP messages are encapsulated in IP datagrams, with an IP protocol number of 2. IGMP has versions IGMP v1, v2 and v3.

Standard Organization

IETF

Related Document

RFC1112, RFC2236 and RFC3376