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Chapter 7: Command-Line Management
2. Usage:
Use ip igmp snooping fast-leave command to enable IGMP Snooping fast-leave processing. Fast-leave processing is analogous to
immediate leave processing; the IGMP group-membership is removed, as soon as an IGMP leave group message is received with-
out sending out a group-specific query.
Use the no ip igmp snooping fast-leave command to disable fast-leave processing.
3. Command Syntax:
(no) ip igmp snooping fast-leave
4. Example:
The following example enables IGMP snooping fast-leave on vlan1.1:
switch_a(config)#interface vlan1.1
switch_a(config-if)#ip igmp snooping fast-leave
switch_a(config-if)#
IGMP querier:
Query-interval:
1. Command Mode: Interface mode
Logon to Configure Mode (Configure Terminal Mode).
Then logon to Interface mode.
vlan1.1 means vlan 1.
The switch_a(config-if)# prompt will show on the screen.
switch_a(config)#interface vlan1.1
switch_a(config-if)#
2. Usage:
Use ip igmp query-interval command to configure the frequency of sending IGMP host query messages.
To return to the default frequency, use the no ip igmp query-interval command.
3. Command Syntax:
ip igmp query-interval INTERVAL
no ip igmp query-interval
INTERVAL <1-18000> Frequency (in seconds) at which IGMP host query messages are sent. Default: 125 seconds.
4. Example:
The following example changes the frequency of sending IGMP host-query messages to 2 minutes on vlan1.1:
switch_a(config)#interface vlan1.1
switch_a(config-if)#ip igmp query-interval 120
switch_a(config-if)#
