Hub/Switch Reference Guide

442 IGMP Snooping Commands
NN47250-100 (Version 02.51)
DVMRP 4 4 0
PIM V1 0 0 0
PIM V2 0 0 0
Topology notifications: 0
Packets with unknown IGMP type: 0
Packets with bad length: 0
Packets with bad checksum: 0
Packets dropped: 4
Table 67 describes the fields in this display.
Table 5: Output for show igmp statistics
Field Description
IGMP statistics for vlan VLAN name. Statistics are listed separately for each VLAN.
IGMP message type Type of IGMP message:
• General-Queries—General group membership
queries sent by the multicast querier (multicast
router or pseudo-querier).
• GS-Queries—Group-specific queries sent by the
the multicast querier to determine whether there
are receivers for a specific group.
• Report V1—IGMP version 1 group membership
reports sent by clients who want to be receivers
for the groups.
• Report V2—IGMP version 2 group membership
reports sent by clients who want to be receivers
for the groups.
• Leave—IGMP version 2 leave messages sent by
clients who want to stop receiving traffic for a
group. Leave messages apply only to IGMP
version 2.
• Mrouter-Adv—Multicast router advertisement
packets. A multicast router sends this type of
packet to advertise the IP address of the sending
interface as a multicast router interface.