Rules and procedures, existing as software in a networks operational memory, used by IP devices to report multicast group membership to adjacent multicast routers - automatically identifying the devices they are routing data between.
A protocol in the TCP/IP protocol suite that is responsible for the management of IP multicast group membership.
IGMP. Internet Group Management Protocol. Used by IP hosts to report their multicast group memberships to an adjacent multicast router.
IGMP is used by multicast routers to learn the existence of host group members on their directly attached subnets. See RFC 1112.
(IGMP) A network control protocol running on top of the IP protocol. It is used by Internet hosts to maintain information related to multicast. All machines that want to use the multicast have to have the IGMP implemented.
The Internet Group Management Protocol is a communications protocol used to manage the membership of Internet Protocol multicast groups. IGMP is used by IP hosts and adjacent multicast routers to establish multicast group memberships. It is an integral part of the IP multicast specification, like ICMP for unicast connections.