Configuring Layer 2 Multicast Configuration Examples
Configuration Guide  
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Figure 7-5 Enable IGMP Snooping for VLAN 10
5)  Choose the menu L2 FEATURES > Multicast > IGMP Snooping > Port Config to load 
the following page. Enable IGMP Snooping for ports 1/0/1-4.
Figure 7-6 Enable IGMP Snooping for the Ports
6)  Click   to save the settings.
7.1.4  Using the CLI
1)  Create VLAN 10.
Switch#configure
Switch(config)#vlan 10
Switch(config-vlan)#name vlan10
Switch(config-vlan)#exit