IGMP Message Format

Group Address

Type

Max Response

Time

Checksum

• Type: 0x11 = Membership Query

  • general (ALL-SYSTEMS), group address zero
  • group-specific, multicast to group address

• Type: 0x16 = Membership Report (v2)

• Type: 0x17 = Leave Group

• MRT: max bound on report range (.1sec)

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