(Internet Group Management Protocol)
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
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Type
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Response Code
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IGMP Checksum
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Group Address
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Res
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S
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QRV
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QQIC
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# Sources
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Source Address 1
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Source Address 2
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......
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Source Address k
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IGMP Parameters
Type 8 bits 1 Create Group Request. 2 Create Group Reply. 3 Join Group Request. 4 Join Group Reply. 5 Leave Group Request. 6 Leave Group Reply. 7 Confirm Group Request. 8 Confirm Group Reply. Code 8 bits IGMP Checksum. 16 bits. Group Address. 32 bits. reserved 3 bits S=Supress Router Processing Flag. 1 bit Querier Robustness Variable 3 bits Querier Query Interval Cide. 8 bits. Number of Sources. 16 bits. Source IP Address Fields 32 bits each.