Command Manual – Multicast Protocol 
Quidway S3900 Series Ethernet Switches-Release 1510  Chapter 5  IGMP Configuration Commands
 
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5-15 
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.  
<Quidway> system-view 
System View: return to User View with Ctrl+Z. 
[Quidway] interface Vlan-interface 2   
[Quidway-Vlan-interface2] igmp timer query 150 
5.1.15  igmp version 
Syntax 
igmp version { 1 | 2 } 
undo igmp version 
View 
VLAN interface view 
Parameter 
1: IGMP Version 1. 
2: IGMP Version 2. 
Description 
Use the igmp version command to specify the version of IGMP that a router uses.  
Use the undo igmp version command to restore the default value. 
The default IGMP version is IGMP version 2.  
All routers on a subnet must support the same version of IGMP. After detecting the 
presence of IGMP Version 1 system, a router cannot automatically switch to Version 1. 
Example 
# Run IGMP Version 1 on VLAN-interface10.  
<Quidway> system-view 
System View: return to User View with Ctrl+Z.