21-9
Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide—Release 12.1 E
78-14099-04
Chapter 21 Configuring IGMP Snooping
Configuring IGMP Snooping
Enabling IGMP Snooping
To enable IGMP snooping globally, perform this task:
This example shows how to enable IGMP snooping globally and verify the configuration:
Router(config)# ip igmp snooping
Router(config)# end
Router# show ip igmp interface vlan 200 | include globally
IGMP snooping is globally enabled
Router#
To enable IGMP snooping in a VLAN, perform this task:
This example shows how to enable IGMP snooping on VLAN 200 and verify the configuration:
Router# interface vlan 200
Router(config-if)# ip igmp snooping
Router(config-if)# end
Router# show ip igmp interface vlan 200 | include snooping
IGMP snooping is globally enabled
IGMP snooping is enabled on this interface
IGMP snooping fast-leave is enabled on this interface
IGMP snooping querier is disabled on this interface
Router#
Command Purpose
Step 1
Router(config)# ip igmp snooping
Enables IGMP snooping.
Router(config)# no ip igmp snooping
Disables IGMP snooping.
Step 2
Router(config)# end
Exits configuration mode.
Step 3
Router# show ip igmp interface vlan vlan_ID |
include globally
Verifies the configuration.
Command Purpose
Step 1
Router(config)# interface vlan vlan_ID
Selects a VLAN interface.
Step 2
Router(config-if)# ip igmp snooping
Enables IGMP snooping.
Router(config-if)# no ip igmp snooping
Disables IGMP snooping.
Step 3
Router(config-if)# end
Exits configuration mode.
Step 4
Router# show ip igmp interface vlan vlan_ID |
include snooping
Verifies the configuration.
