Administrator Guide

Layer 2 Switching Commands 541
no ipv6 mld snooping [vlan vlan-id ]
• vlan-id — A VLAN identifier (Range 1-4093).
Default Configuration
MLD Snooping is enabled globally and on all VLANs by default.
Command Mode
Global Configuration mode.
User Guidelines
Use this command without parameters to globally enable MLD Snooping.
Use the no form of the command to disable MLD Snooping. Use the vlan
parameter to enable MLD Snooping on a specific VLAN.
It is recommended that IGMP snooping should be enabled whenever MLD
snooping is enabled to ensure that unwanted pruning of multicast protocol
packets used by other protocols does not occur.
Enabling MLD snooping on an IPv6 L3 multicast router is recommended. If a
multicast source is connected to a VLAN on which both L3 multicast and
IGMP/MLD snooping are enabled, the multicast source is forwarded to the
mrouter ports as well as the internal mrouter port. MLD snooping does not
flood IPv6 multicast data plane packets in the VLAN if IPv6 L3 routing is
enabled. If MLD snooping is disabled, the switch will flood multicast data
plane packets in the VLAN.
Example
console(config)#ipv6 mld snooping
console(config)#no ipv6 mld snooping vlan 1
show ipv6 mld snooping
The show ipv6 mld snooping command displays MLD Snooping information
and SSM statistics. Configured information is displayed whether or not MLD
Snooping is enabled.
Syntax
show ipv6 mld snooping [interface interface-id | vlan vlan-id }]
2CSNXXX_SWUM204.book Page 541 Monday, January 25, 2016 1:25 PM