Configuring IP Multicast Switching Modifying IPMS Parameters
OmniSwitch AOS Release 8 Network Configuration Guide December 2017 page 25-16
Modifying the IGMP Last Member Query Interval
The default IGMP last member query interval (i.e., the time period to reply to an IGMP query message
sent in response to a leave group message) is 10 tenths of seconds. The following subsections describe
how to configure the IGMP last member query interval and restore it by using the ip multicast last-
member-query-interval command.
Configuring the IGMP Last Member Query Interval
You can modify the IGMP last member query interval from 1 to 65535 tenths of seconds by entering ip
multicast last-member-query-interval followed by the new value. For example, to set the IGMP last
member query interval to 60 tenths-of-seconds on the system if no VLAN or SPB service is specified, you
would enter:
-> ip multicast last-member-query-interval 60
You can also modify the IGMP last member query interval on the specified VLAN or SPB service by
entering:
-> ip multicast vlan 3 last-member-query-interval 60
-> ip multicast service 10 last-member-query-interval 60
Restoring the IGMP Last Member Query Interval
To restore the IGMP last member query interval to its default value on the system if no VLAN or SPB
service is specified, use the ip multicast last-member-query-interval command by entering:
-> ip multicast last-member-query-interval 0
Or, as an alternative, enter the following command to restore the IGMP last member query interval to its
default value:
-> no ip multicast last-member-query-interval
You can also restore the IGMP last member query interval on the specified VLAN or SPB service by
entering:
-> ip multicast vlan 2 last-member-query-interval 0
-> ip multicast service 10 last-member-query-interval 0
Or, as an alternative, enter the following commands to restore the IGMP last member query interval to its
default value:
-> no ip multicast vlan 2 last-member-query-interval
-> no ip multicast service 10 last-member-query-interval
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