Day: March 26, 2019


Internet Group Management Protocol (IGMP)

IGMP has evolved from the Host Membership Protocol. IGMP messages are sent in IP datagrams with IP protocol number 2, with the IP Time-to-Live (TTL) field set to 1. IGMP packets pass only over a LAN and are not forwarded by routers, because of their TTL field values. The two most important goals of IGMP are […]

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