multicast fast-leave-v2

Configures fast leave for IGMPv2.
Syntax
multicast fast-leave-v2 [ edge-ports ]
no multicast fast-leave-v2 [ edge-ports ]
Command Default

Fast leave for IGMPv2 is not configured.

Parameters
edge-ports
Specifies that fast-leave-v2 is enabled only on edge ports.
Modes

VLAN configuration mode

Usage Guidelines

When a device receives an IGMPv2 leave message, it sends out multiple group-specific queries. If no other client replies within the waiting period, the device stops forwarding traffic. When the multicast fast-leave-v2 command is configured, and when the device receives a leave message, it immediately stops forwarding to that port. The device does not send group specific-queries. When the multicast fast-leave-v2 command is configured on a VLAN, you must not have multiple clients on any port that is part of the VLAN.

In a scenario where two devices connect, the querier device should not be configured for fast-leave-v2 because the port might have multiple clients through the non-querier.

You can configure the ip multicast leave-wait-time command to set the number of queries and the waiting period.

The no form of the command restores the default.

Examples

The following example configures fast leave for IGMP on VLAN 10. 

device# configure terminal
device(config)# vlan 10
device(config-vlan-10)# multicast fast-leave-v2

The following example configures fast leave for IGMPv2 for edge ports only on Vlan 10.

device# configure terminal
device(config)# vlan 10
device(config-vlan-10)# multicast fast-leave-v2 edge-ports
History
Release version Command history
09.0.00 The edge-ports keyword was added.
Parent topic: Commands M