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Cisco Catalyst Blade Switch 3120 for HP Command Reference
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Chapter 2 Cisco Catalyst Blade Switch 3120 for HP Cisco IOS Commands
ipv6 mld snooping
ipv6 mld snooping
Use the ipv6 mld snooping global configuration command on the switch stack or on a standalone switch
without keywords to enable IP version 6 (IPv6) Multicast Listener Discovery (MLD) snooping globally
or on the specified VLAN. Use the no form of this command to disable MLD snooping on the switch or
switch stack or the VLAN.
ipv6 mld snooping [vlan vlan-id]
no ipv6 mld snooping [vlan vlan-id]
Note This command is available only if you have configured a dual IPv4 and IPv6 Switch Database
Management (SDM) template on the switch.
Syntax Description
Defaults MLD snooping is globally disabled on the switch.
MLD snooping is enabled on all VLANs. However, MLD snooping must be globally enabled before
VLAN snooping will take place.
Command Modes Global configuration
Command History
Usage Guidelines To configure the dual IPv4 and IPv6 template, enter the sdm prefer dual-ipv4-and-ipv6 {default | vlan)
global configuration command and reload the switch.
When MLD snooping is globally disabled, it is disabled on all the existing VLAN interfaces. When you
globally enable MLD snooping, it is enabled on all VLAN interfaces that are in the default state
(enabled). VLAN configuration will override global configuration on interfaces on which MLD
snooping has been disabled.
If MLD snooping is globally disabled, you cannot enable it on a VLAN. If MLD snooping is globally
enabled, you can disable it on individual VLANs.
VLAN numbers 1002 through 1005 are reserved for Token Ring and FDDI VLANs and cannot be used
in MLD snooping.
Examples This example shows how to globally enable MLD snooping:
Switch(config)# ipv6 mld snooping
vlan vlan-id (Optional) Enable or disable IPv6 MLD snooping on the specified VLAN.
The VLAN ID range is 1 to 1001 and 1006 to 4094.
Release Modification
12.2(40)EX This command was introduced.
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