Specifications

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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.3.0XO(15.1(1)XO)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
ipv6 mld snooping tcn
ipv6 mld snooping tcn
To configure IP version 6 (IPv6) Multica st Listener Discovery (ML D) Topology Change Notificat ions
(TCNs), us e t he ipv6 m ld snoopi ng t cn commands. To reset the default settings, use the no f or m of the
commands.
ipv6 mld snooping tcn {flood query count integer_value | query solicit}
no ipv6 mld snooping tcn {flood query count integer_value | query solicit}
Syntax Description
Command Default TCN query soliciting is disa bled.
When enabled, the default flo od query count is 2.
Command Modes Global c onfiguratio n mode
Examples This example shows how to enable TCN query soliciting:
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# ipv6 mld snooping tcn query solicit.
Switch(config)# end
Switch#
This example shows how to set the flood que ry count to 5:
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# ipv6 mld snooping tcn flood query count 5.
Switch(config)# end
Switch#
You can verify your settings by entering the show ipv6 MLD snooping [vlan vlan-id] user EXEC
command.
Related Commands
flood query count
integer_value
Sets the flood query count, which i s the number of queries tha t are sent
before forwarding multicast data to only those ports requesting it. The range
is 1 to 10.
query solicit En ables soliciting of TCN queries.
Command Description
show ipv6 mld snooping Displays IP versi on 6 (IPv6) MLD snooping config uration
of the switch or the VLAN.