280 IGMP Snooping Commands
User Guidelines
The leave timeout should be set greater than the maximum time that a host is allowed to 
respond to an IGMP Query.
Use immediate leave only where there is only one host connected to a port. 
Example
The following example configures the host leave-time-out to 60 seconds.
console(config-if-1/g1)#ip igmp snooping leave-time-out 60
ip igmp snooping mrouter-time-out
Use the ip igmp snooping mrouter-time-out command in Interface Configuration mode to 
configure the mrouter-time-out. This command is used for setting the aging-out time after 
Multicast router ports are automatically learned. To reset to the default mrouter-time-out, use 
the no form of this command.
Syntax
ip igmp snooping mrouter-time-out 
time-out
no ip igmp snooping mrouter-time-out
•
time-out
 — mrouter timeout in seconds for IGMP. (Range: 1–3600)
Default Configuration
The default value is 300 seconds.
Command Mode
Interface Configuration (Ethernet, port-channel) mode
User Guidelines
This command has no user guidelines.
Example
The following example configures the mrouter timeout to 200 seconds.
console(config-if-1/g1)#ip igmp snooping mrouter-time-out 200
show ip igmp snooping groups
Use the show ip igmp snooping groups command in User EXEC mode to display the Multicast 
groups learned by IGMP snooping.