3Com 5500-EI PWR, Справочное руководство

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A multicast router periodically sends IGMP general query messages onto the attached subnets to
determine whether multicast group members are present on the subnets. The IGMP query interval can
be tuned according to the practical conditions of the network.
Related commands: igmp timer other-querier-present .
Examples
# Set the IGMP query interval to 150 seconds on VLAN-interface 2.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] interface Vlan-interface 2
[Sysname-Vlan-interface2] igmp timer query 150
igmp version
Syntax
igmp version { 1 | 2 }
undo igmp version
View
Interface view
Parameters
1 : Specifies IGMP version 1.
2 : Specifies IGMP version 2.
Description
Use the igmp version command to specify the version of IGMP to run on the interface.
Use the undo igmp version command to restore the default.
The default IGMP version is IGMP version 2.
The device cannot automatically switch between different IGMP versions, so all the devices on a subnet
must run the same version of IGMP.
Examples
# Run IGMPv1 on VLAN-interface 10.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] interface Vlan-interface 10
[Sysname-Vlan-interface10] igmp version 1
reset igmp group
Syntax
reset igmp group { all | interface interface-type interface-number { all | group-address
[ group-mask ] } }