IGMP Advanced Configuration
© Copyright Lenovo 2017
The following table describes the commands used to configure advanced IGMP
parameters.
Table 316.
IGMP Advanced Configuration Options
Command Syntax and Usage
[no] ip igmp fastleave {<VLAN ID (1‐4094)>|port
<port alias or number>}
Enables or disables Fastleave processing. Fastleave allows the switch to
immediately remove a VLAN from the IGMP VLAN list or a port from the
IGMP port list, if the host sends a Leave message, and the proper conditions
are met.
This command is disabled by default.
Command mode: Global configuration
ip igmp queryinterval <1‐600>
Sets the IGMP router query interval, in seconds.
The default value is 125 seconds.
Command mode: Global configuration
no ip igmp queryinterval
Resets the IGMP router query interval to its default value of 125 seconds.
Command mode: Global configuration
ip igmp robust <1‐10>
Configures the IGMP Robustness variable, which allows you to tune the
switch for expected packet loss on the subnet. If the subnet is expected to be
lossy (high rate of packet loss), increase the value.
The default value is 2.
Command mode: Global configuration
no ip igmp robust
Resets the IGMP Robustness variable to its default value of 2.
Command mode: Global configuration
[no] ip igmp rtralert
Enables or disables the Router Alert option in IGMP messages.
Command mode: Global configuration
Chapter 4: Configuration Commands
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