Quick Reference Guide

208 IGMP Snooping Commands
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Default Configuration
IGMP snooping is disabled.
Command Mode
Interface Configuration (VLAN) mode.
User Guidelines
• IGMP snooping can only be enabled on static VLANs. It must not be enabled on Private VLANs
or their community VLANs.
Example
The following example enables IGMP snooping on VLAN 2.
ip igmp snooping mrouter
The ip igmp snooping mrouter Interface Configuration (VLAN) mode command enables
automatic learning of Multicast router ports in the context of a specific VLAN. Use the no form of
this command to remove automatic learning of Multicast router ports.
Syntax
• ip igmp snooping mrouter learn-pim-dvmrp
• no ip igmp snooping mrouter learn-pim-dvmrp
Default Configuration
Automatic learning of Multicast router ports is enabled.
Command Mode
Interface Configuration (VLAN) mode.
User Guidelines
• Multicast router ports can be configured statically using the bridge multicast forward-all
Interface Configuration (VLAN) mode command.
Example
The following example enables automatic learning of Multicast router ports on VLAN 2.
Console(config)# interface vlan 2
Console(config-if)# ip igmp snooping
Console(config) # interface vlan 2
Console(config-if)# ip igmp snooping mrouter learn-pim-dvmrp