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Software Configuration Guide—Release 15.0(2)SG
OL-23818-01
Chapter 23 Configuring IGMP Snooping and Filtering
Displaying IGMP Snooping Information
To display multicast router interfaces, perform this task:
This example shows how to display the multicast router interfaces in VLAN 1:
Switch# show ip igmp snooping mrouter vlan 1
vlan ports
-----+----------------------------------------
1 Gi1/1,Gi2/1,Fa3/48,Router
Switch#
Displaying MAC Address Multicast Entries
To display MAC address multicast entries for a VLAN, perform this task:
This example shows how to display MAC address multicast entries for VLAN 1:
Switch# show mac-address-table multicast vlan 1
Multicast Entries
vlan mac address type ports
-------+---------------+-------+-------------------------------------------
1 0100.5e01.0101 igmp Switch,Gi6/1
1 0100.5e01.0102 igmp Switch,Gi6/1
1 0100.5e01.0103 igmp Switch,Gi6/1
1 0100.5e01.0104 igmp Switch,Gi6/1
1 0100.5e01.0105 igmp Switch,Gi6/1
1 0100.5e01.0106 igmp Switch,Gi6/1
Switch#
This example shows how to display a total count of MAC address entries for VLAN 1:
Switch# show mac-address-table multicast vlan 1 count
Multicast MAC Entries for vlan 1: 4
Switch#
Displaying IGMP Snooping Information on a VLAN Interface
To display IGMP snooping information on a VLAN, perform this task:
Command Purpose
Switch# show ip igmp snooping mrouter vlan
vlan_ID
Displays multicast router interfaces.
Command Purpose
Switch# show mac-address-table multicast
vlan vlan_ID [count]
Displays MAC address multicast entries for a
VLAN.
Command Purpose
Switch# show ip igmp snooping vlan vlan_ID
Displays IGMP snooping information on a VLAN
interface.