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)#

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Black Box LEH1104A-2GSFP, LEH906A-2SFP, LEH908A, LEH906A-2MMST Ip igmp query-interval Interval no ip igmp query-interval

LEH1104A-2SFP, LEH1008A-2SFP, LEH1008A-2MMSC, LEH906A-2GSFP, LEH906A-2MMST specifications

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