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IGMP
FeIix edited this page Sep 28, 2026
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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.
It is configured on a switch connecting local end hosts to reduce multicast traffic on the switch.