Configure IGMP Snooping on a VLAN

Use IGMP snooping in a VLAN when PIM is not configured. The IGMP snooping querier sends IGMP queries to trigger IGMP responses from devices that are to receive IP multicast traffic. The IGMP snooping querier listens for these responses to map the appropriate forwarding addresses.

Note

The IGMP snooping querier is suspended if Layer 3 IGMP is enabled on any of the cluster nodes.

Access global configuration mode.
```
device# configure terminal
```
Enter VLAN configuration mode.
```
device(config)# vlan 25
```
Specify the IGMP query interval for the VLAN.
```
device(config-vlan-25)# ip igmp snooping query-interval 125
```
The valid range is from 1 through 18000 seconds. The default is 125 seconds.
Specify the last member query interval.
```
device(config-vlan-25)# ip igmp snooping last-member-query-interval 1000
```
The valid range is from 1000 through 25500 milliseconds. The default is 1000 milliseconds.

Configure the static mrouter port.

device(config-vlan-25)# ip igmp snooping mrouter interface ethernet 0/2

Configure a static IGMP group.

device(config-vlan-25)# ip igmp snooping static-group 225.0.0.1 interface ethernet 0/15

Configure the IGMP version.
```
device(config-vlan-25)# ip igmp snooping version v3
```
Note
Version 2 is enabled by default. When you change the version, existing static or dynamic groups are deleted. These groups are relearned when the next query is sent.
Activate the IGMP snooping querier functionality for the VLAN.
```
device(config-Vlan-25)# ip igmp snooping querier enable
```
Note
The IGMP snooping querier and the static mrouter can be configured together on a VLAN interface.