Configuration Guide     232
Configuring Layer 2 Multicast IGMP Snooping Configuration
Switch(config)#ip igmp snooping vlan-config 2 static 239.1.2.3 interface 
gigabitEthernet 1/0/1-3
Switch(config)#show ip igmp snooping groups static
Multicast-ip                VLAN-id        Addr-type        Switch-port
------------                   -------             ---------             -----------
239.1.2.3                      2                     static                  Gi1/0/1-3
Switch(config)#end
Switch#copy running-config startup-config