Configure Fast Leave Mode

Configure fast leave mode to control all IGMP fast leave enabled interfaces.

Before you begin

You must enable explicit-host-tracking before configuring fast-leave mode. To enable explicit-host-tracking, see Configure IGMP Parameters on a Port and Configure IGMP Parameters on a VLAN.

About this task

Fast leave relies on an alternative leave process where the switch stops sending traffic for the group immediately after it receives a leave message, without issuing a query to check if other group members exist on the network. Use this global parameter to alter the leave processing on fast leave enabled IGMPv2, IGMPv3, and IGMP snoop interfaces.

Important

Fast leave mode applies only to fast leave enabled IGMP interfaces.

You can configure IGMP on a VRF instance the same way you configure the Global Router except that you must first launch the appropriate VRF context.

Procedure

In the navigation pane, expand Configuration > IP.
Select IGMP.
Select the Global tab.
Select the mode.
Select Apply.

Global Field Descriptions

Use the data in the following table to use the Global tab.


Name	Description
FastLeaveMode	Configures the mode to one of the following values: multipleUser: Removes from the group only the IGMP member who sent the leave message. Traffic does not stop if other receivers exist on the interface port. This value is the default. oneUser: Removes all group members on a fast leave enabled interface port after receiving the first leave message from a member. This behavior is the same as the conventional fast leave process.
GenerateTrap	Generates a trap. The default is disable.
GenerateLog	Generates a log message. The default is disable.