Administrator Guide

Layer 2 Switching Commands 537
You should enable immediate-leave admin mode only on VLANs where only
one host is connected to each layer 2 LAN port. This prevents the inadvertent
dropping of the other hosts that were connected to the same layer 2 LAN
port, but were still interested in receiving multicast traffic directed to that
group. Also, immediate-leave processing is supported only with MLD version
1 hosts.
Syntax
ipv6 mld snooping vlan vlan-id immediate-leave
• vlan-id — A VLAN identifier (Range 1-4093).
Default Configuration
Immediate leave is disabled on all VLANs by default.
Command Mode
Global Configuration mode.
User Guidelines
There are no user guidelines for this command.
Example
This example enables mld snooping immediate-leave for VLAN 2.
console(config)#ipv6 mld snooping vlan 2 immediate-leave
ipv6 mld snooping listener-message-suppression
This command enables MLD listener message suppression on a specific
VLAN. Use the no form of this command to disable listener message
suppression.
Syntax
ipv6 mld snooping vlan vlan-id listener-message-suppression
no ipv6 mld snooping vlan
vlan-id listener-message-suppression
• vlan-id — A VLAN identifier (Range 1-4093).
2CSNXXX_SWUM204.book Page 537 Monday, January 25, 2016 1:25 PM