3Com Switch 7750 Series
Command Reference Guide – Multicast Chapter 4 IGMP Configuration Commands
4-15
Example
# Set the querier to expire after 300 seconds.
<3Com> system-view
System View: return to User View with Ctrl+Z.
[3Com] interface Vlan-interface 10
[3Com-Vlan-interface10] igmp timer other-querier-present 300
4.1.15 igmp timer query Syntax
igmp timer query seconds
undo igmp timer query
View
VLAN interface view
Parameter
seconds: Interval at which a router transmits IGMP query messages, in the range of 1
to 65,535 seconds.
Description
Use the igmp timer query command to configure the interval at which a router
interface sends IGMP query messages.
Use the undo igmp timer query command to restore the default value.
By default, a router interface transmits IGMP query messages at the interval of 60
seconds.
A multicast router periodically sends out IGMP query messages to attached segments
to find hosts that belong to different multicast groups. The query interval can be
modified according to the practical conditions of the network.
For the related command, see igmp timer other-querier-present.
Example
# Configure to transmit the host-query message every 150 seconds via
VLAN-interface2.
<3Com> system-view
System View: return to User View with Ctrl+Z.
[3Com] interface Vlan-interface 2
[3Com-Vlan-interface2] igmp timer query 150