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FeIix edited this page Sep 28, 2026 · 9 revisions

Internet Group Management Protocol

IGMP is designed to manage multicast traffic, like video streams, between end devices and local multicast routers within a LAN.

Version Key Features
v1 Request to join a multicast group
v2 Request to join or leave a multicast group
v3 Request specific multicast sources
  • Host sends a join message to 239.255.1.1, and add 01:00:5E:7F:01:01 as its MAC address.

ICMP Snooping

It is configured on a switch connecting local end hosts to reduce multicast traffic on the switch.

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