Reference Guide
Internet Group Management Protocol (IGMP) | 583
ip igmp immediate-leave 
c e s
Enable IGMP immediate leave.
Syntax
ip igmp immediate-leave 
[group-list prefix-list-name] 
To disable ip igmp immediate leave, use the 
no ip igmp immediate-leave command. 
Parameters
Defaults
Not configured
Command Modes
INTERFACE
Command
History
Usage
Information
Querier normally sends a certain number of group specific queries when a leave 
message is received, for a group, prior to deleting a group from the membership 
database. There may be situations in which immediate deletion of a group from the 
membership database is required. This command provides a way to achieve the 
immediate deletion. In addition, this command provides a way to enable 
immediate-leave processing for specified groups.
ip igmp last-member-query-interval 
c e s
Change the last member query interval, which is the Max Response Time inserted 
into Group-Specific Queries sent in response to Leave Group messages. This interval 
is also the interval between Group-Specific Query messages.
Syntax
ip igmp last-member-query-interval
 milliseconds 
To return to the default value, enter 
no ip igmp last-member-query-interval.
Parameters
Defaults
1000 milliseconds
group-list prefix-list-name
Enter the keyword group-list followed by a string up to 
16 characters long of the 
prefix-list-name.
Version 8.3.19.0 Introduced on S4820T
Version 8.3.7.0 Introduced on S4810
Version 7.8.1.0 Introduced on S-Series
Version 7.7.1.0 Introduced on C-Series
E-Series legacy command
milliseconds  Enter the number of milliseconds as the interval.
Default: 1000 milliseconds 
Range: 100 to 65535










