What is IGMP (Internet Group Management Protocol)?

Version (1) Type (1-2) Unused 16-Bit Checksum
32-Bit Group Address

IGMPv1 Packet Structure

Type Max Response Code Checksum
32-Bit Group Address

IGMPv2 Packet Structure

Bit Offset 0-3 4 5-7 8-15 16-31
0 Type=0x11 Max Response Code Checksum
64 Resv S QRV QQIC Number of Sources (N)
32 Group Address
128 Sources Address [2]
96 Sources Address [1]
Sources Address [N]

IGMPv3 Packet Structure

References:

1) https://en.wikipedia.org/wiki/Internet_Group_Management_Protocol

2) https://www.sysnettechsolutions.com/en/what-is-igmp/

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What is IGMP (Internet Group Management Protocol)?

By micheal sean

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What is IGMP (Internet Group Management Protocol)?

IGMP (Internet Group Management Protocol) is a protocol that enables the host computer to advertise its multicast group membership to nearby switches and routers. IGMP is a standard protocol used by the TCP/IP protocol packet for dynamic multicast broadcasting.

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