Command Manual – Multicast Protocol
Quidway S3900 Series Ethernet Switches-Release 1510 Chapter 5 IGMP Configuration Commands
Huawei Technologies Proprietary
5-14
Description
Use the igmp timer other-querier-present command to configure the presence time
of the IGMP querier.
Use the undo igmp timer other-querier-present command to restore the default
value.
By default, the presence time of the IGMP querier is twice the value of IGMP query
message interval, that is, 120 seconds.
On a shared network, i.e., there are multiple multicast routers on the same network
segment, the query router (querier for short) takes charge of sending query messages
periodically on the interface. If other non-queriers receive no query messages within
the valid period, the router will consider the previous querier to be invalid and the router
itself becomes a querier.
In IGMP version 1, the selection of a querier is determined by the multicast routing
protocol. In IGMP version 2, the router with the lowest IP address on the shared
network segment acts as the querier.
Related command: igmp timer query, and display igmp interface.
Example
# Set the querier to expire after 300 seconds.
<Quidway> system-view
System View: return to User View with Ctrl+Z.
[Quidway] interface Vlan-interface 10
[Quidway-Vlan-interface10] igmp timer other-querier-present 300
5.1.14 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.
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