9.7 Verifying CGMP
9.7.1
Verify CGMP configuration

Several commands are available to help you verify the CGMP configuration on the switch. These commands allow you to view the relationships between VLANs, CGMP-enabled routers, and switch ports. Refer to the "Configuring Multicast Services" section in the Catalyst 5000 Series Software Configuration Guide (4.3) for a complete list of these commands.

The following two commands are useful in helping you verify the CGMP configuration on the switch:

The show cgmp statistics vlan command displays the ongoing CGMP activity for a designated VLAN on a set command-based switch. (see Figure )

The show multicast group cgmp vlan command displays only the multicast router information that has been learned automatically through CGMP. The results of this command show the multicast group MAC addresses associated with a specific VLAN and the ports associated with those groups.

To view CGMP information on a Cisco IOS command-based switch, issue the command show cgmp, as shown in Figure .