Gigabit Ethernet Switch Management Guide

M ULTICAST F ILTERING C OMMANDS
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• The number of seconds represented by the maximum response interval
must be less than the Query Interval (page 3-109).
Example
The following shows how to configure the maximum response time to
20 seconds:
Related Commands
ip igmp version (3-112)
ip igmp query-interval (3-109)
ip igmp last-memb-query-interval
Use this command to configure the last member query interval. Use the no
form of this command to restore the default.
Syntax
ip igmp last-memb-query-interval seconds
no ip igmp last-memb-query-interval
seconds - The report delay for the last member query. (Range: 1-255)
Default Setting
1 second
Command Mode
Interface Configuration (VLAN)
Command Usage
• A multicast client sends an IGMP leave message when it leaves a group.
The router then checks to see if this was the last host in the group by
sending an IGMP query and starting a timer based on this command.
If no reports are received before the timer expires, the group is deleted.
• This value may be tuned to modify the leave latency of the network. A
Console(config-if)#ip igmp max-resp-interval 20
Console(config-if)#