• Designating a Multicast Router InterfaceViewing IGMP Enabled InterfacesInterfaces that are enabled with PIM-SM are automatically enabled with IGMP.To view IGMP-enabled interfaces, use the following command.• View IGMP-enabled interfaces.EXEC Privilege modeshow ip igmp interfaceExample of the show ip igmp interface CommandDell#show ip igmp interface TenGigabitEthernet 3/10/1Inbound IGMP access group is not setInternet address is 165.87.34.5/24IGMP is up on the interfaceIGMP query interval is 60 secondsIGMP querier timeout is 0 secondsIGMP max query response time is 10 secondsIGMP last member query response interval is 1000 msIGMP immediate-leave is disabledIGMP activity: 2 joinsIGMP querying router is 165.87.34.5 (this system)IGMP version is 2Dell#Selecting an IGMP VersionDell Networking OS enables IGMP version 2 by default, which supports version 1 and 2 hosts, but is notcompatible with version 3 on the same subnet.If hosts require IGMP version 3, you can switch to IGMP version 3.To switch to version 3, use the following command.• Switch to a different IGMP version.INTERFACE modeip igmp versionExample of the ip igmp version CommandDell(conf-if-te-1/13/1)#ip igmp version 3Dell(conf-if-te-1/13/1)#do show ip igmp interfaceGigabitEthernet 1/13/1 is up, line protocol is downInbound IGMP access group is not setInterface IGMP group join rate limit is not setInternet address is 1.1.1.1/24IGMP is enabled on interfaceIGMP query interval is 60 secondsIGMP querier timeout is 125 secondsIGMP max query response time is 10 secondsIGMP last member query response interval is 1000 msIGMP immediate-leave is disabledIGMP activity: 0 joins, 0 leaves, 0 channel joins, 0 channel leavesIGMP querying router is 1.1.1.1 (this system)IGMP version is 3360 Internet Group Management Protocol (IGMP)
