Displaying Igmp Statistics; Displaying Multicast Routers Learned From Igmp; Displaying Igmp Multicast Groups - Cisco RJ-45-to-AUX Brochure

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:
Total invalid pkts recvd
General Queries recvd
Group Specific Queries recvd
MAC−Based General Queries recvd 0
Leaves recvd
Reports recvd
Other Pkts recvd
Queries Xmitted
GS Queries Xmitted
Reports Xmitted
Leaves Xmitted
Failures to add GDA to EARL
Topology Notifications rcvd
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
17564
0
235
0
4
14584
0
0
18
0
0
0
6
153