Users Guide

Layer 2 Switching Commands 571
User Guidelines
Enabling immediate-leave allows the switch to immediately remove the
Layer 2 LAN interface from its forwarding table entry upon receiving an MLD
done message for that multicast group without first sending out MAC-based
general queries to the interface.
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.
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).
Default Configuration
Listener message suppression is enabled by default.
Command Mode
Global Configuration mode.