Displaying IGMP Statistics

To display IGMP statistics for all VLANs, use the show igmp multicast statistics command as shown here:

Coriolis> (enable) show igmp statistics

IGMP enabled

 

IGMP fastleave disabled

 

IGMP statistics for vlan1:

 

Total valid pkts rcvd:

17564

Total invalid pkts recvd

0

General Queries recvd

235

Group Specific Queries recvd

0

MAC−Based General Queries recvd

0

Leaves recvd

4

Reports recvd

14584

Other Pkts recvd

0

Queries Xmitted

0

GS Queries Xmitted

18

Reports Xmitted

0

Leaves Xmitted

0

Failures to add GDA to EARL

0

Topology Notifications rcvd

6

This is a good way to verify that IGMP is set up correctly. If you have more than one VLAN on the switch and want to display only the specific VLAN, use the command show igmp multicast statistics [vlan].

Displaying Multicast Routers Learned from IGMP

To display multicast router ports that were learned from IGMP, use the following command:

Coriolis> (enable) show multicast router igmp

CGMP disable

IGMP enable

Port Vlan

————————————

3/1 1

Total Number of Entries = 1 ‘*’ − Configured

Displaying IGMP Multicast Groups

To display the total number of multicast groups, use the following command:

Coriolis> (enable) show multicast group count [vlan]

CGMP disable

IGMP enable

Total Number of Entries = 2

If you only want to display the number of multicast groups that were learned from IGMP, use the following command:

Coriolis> (enable) show multicast group count igmp [vlan]

CGMP disable

IGMP enable

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Cisco Systems RJ-45-to-AUX manual Displaying Igmp Statistics, Displaying Multicast Routers Learned from Igmp, 153