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492 IGMP Snooping Commands
User Guidelines
The mcrexpiretime should be less than the group membership interval.
Example
The following example sets the multicast router present expiration time on
VLAN 2 to 60 seconds.
console(config-vlan)#ip igmp mcrtexpiretime 2 60
2CSPC4.XCT-SWUM2XX1.book Page 492 Monday, October 3, 2011 11:05 AM