Cisco Catalyst 3750-X Command Reference

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Catalyst 3750-X and 3560-X Switch Command Reference
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Chapter 2 Catalyst 3750-X and 3560-X Switch Cisco IOS Commands
ipv6 mld snooping tcn
ipv6 mld snooping tcn
Use the ipv6 mld snooping tcn global configuration commands on the switch stack or on a standalone
switch to configure IP version 6 (IPv6) Multicast Listener Discovery (MLD) Topology Change
Notifications (TCNs). Use the no form of the commands to reset the default settings.
ipv6 mld snooping tcn {flood query count integer_value | query solicit}
no ipv6 mld snooping tcn {flood query count integer_value | query solicit}
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
Command Default TCN query soliciting is disabled.
When enabled, the default flood query count is 2.
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.
Examples This example shows how to enable TCN query soliciting:
Switch(config)# ipv6 mld snooping tcn query solicit.
This example shows how to set the flood query count to 5:
Switch(config)# ipv6 mld snooping tcn flood query count 5.
You can verify your settings by entering the show ipv6 mld snooping [vlan vlan-id] user EXEC
command.
flood query count
integer_value
Set the flood query count, which is the number of queries that are sent before
forwarding multicast data to only those ports requesting to receive it. The
range is 1 to 10.
query solicit Enable soliciting of TCN queries.
Release Modification
12.2(53)SE2 This command was introduced.

Cisco Catalyst 3750-X Specifications

General

Brand	Cisco
Model	Catalyst 3750-X
Category	Switch
Language	English