Igmp Timer Query - 3Com 5500G-EI Command Reference Manual

260 C 7: U M
HAPTER SING

igmp timer query

P C
ULTICAST ROTOCOL OMMANDS
View
VLAN Interface View
Parameter
IGMP querier present timer value in second ranging from 1 to 131070.
seconds :
By default, the value is twice the value of IGMP query message interval, i.e., 120
seconds.
Description
Use the
igmp timer other-querier-present
of presence of the IGMP querier.
Use the
undo igmp timer other-querier-present
default value.
On a shared network, where 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 the 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 commands:
Example
Set querier to expire after 300 seconds.
<SW5500>system-view
System View: return to User View with Ctrl+Z
[SW5500]interface Vlan-interface 10
[SW5500-vlan-interface10]igmp timer other-querier-present 300
Syntax
igmp timer query seconds
undo igmp timer query
View
VLAN Interface View
Parameter
The interval, in seconds, at which a router transmits IGMP query
seconds:
messages in the range from 1 to 65535. By default, the value is 60 seconds.
Description
Use the
igmp timer query
interface sends IGMP query messages.
Use the
undo igmp timer query
and
igmp timer query
command to configure the interval at which a router
command to restore the default value.
command to configure the timer
command to restore the
display igmp interface