Multicast Filtering Commands

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ip igmp snooping version

This command configures the IGMP snooping version. Use the no form to restore
the default.
Syntax
ip igmp snooping version {1 | 2}
no ip igmp snooping version
1 - IGMP Version 1
2 - IGMP Version 2
Default Setting
IGMP Version 2
Command Mode
Global Configuration
Command Usage
All systems on the subnet must support the same version. If there are legacy
devices in your network that only support Version 1, you will also have to
configure this switch to use Version 1.
Some commands are only enabled for IGMPv2, including ip igmp
query-max-response-time and ip igmp query-timeout.
Example
The following configures the switch to use IGMP Version 1:

ip igmp snooping leave-proxy

This command enables IGMP leave proxy on the switch. Use the no form to disable
the feature.
Syntax
[no] ip igmp snooping leave-proxy
Default Setting
Disabled
Command Mode
Global Configuration
Command Usage
The IGMP snooping leave-proxy feature suppresses all unnecessary IGMP
leave messages so that the non-querier switch forwards an IGMP leave
packet only when the last dynamic member port leaves a multicast group.
Console(config)#ip igmp snooping version 1
Console(config)#