3com MSR 20-20 참조 매뉴얼

By default, the IGMP query interval is 60 seconds.

timer query (IGMP view), igmp timer other-querier-present, display igmp 
interface.

# Set the IGMP general query interval to 125 seconds on Ethernet 1/0.

<Sysname> system-view

[Sysname] interface ethernet 1/0

[Sysname-Ethernet1/0] igmp timer query 125 

igmp version version-number

Interface view

version-number: IGMP version, in the range of 1 to 3.

Use the igmp version command to configure the IGMP version on the current 
interface.

Use the undo igmp version command to restore the IGMP version to the system 
default.

The default IGMP version is version 2.

version (IGMP view).

# Set the IGMP version to IGMPv1 on Ethernet 1/0.

<Sysname> system-view

[Sysname] interface ethernet 1/0

[Sysname-Ethernet1/0] igmp version 1 

last-member-query-interval interval

Public instance IGMP view, VPN instance IGMP view

interval: Last-member query interval, namely the interval in seconds at which the 
IGMP querier sends IGMP group-specific queries after it receives a leave-group 
message from a host, with an effective range of 1 to 5.