H3C S7500 Series Ethernet Switches Command Manual

Table Of Contents
Command Manual – Multicast
H3C S7500 Series Ethernet Switches Chapter 5
IGMP Configuration Commands
5-15
In IGMPv1, querier selection is determined by the multicast routing protocol. In IGMPv2,
the router with the lowest IP address on the shared network segment acts as the
querier.
Related commands: igmp timer query, display igmp interface.
Examples
# Set the querier to expire after 300 seconds.
<H3C> system-view
System View: return to User View with Ctrl+Z.
[H3C] interface Vlan-interface 10
[H3C-Vlan-interface10] igmp timer other-querier-present 300
5.1.15 igmp timer query
Syntax
igmp timer query seconds
undo igmp timer query
View
VLAN interface view
Parameters
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.
Related commands: igmp timer other-querier-present.
Examples
# Configure VLAN-interface 2 to transmit host-query messages every 150 seconds.
<H3C> system-view
System View: return to User View with Ctrl+Z.