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Cisco Catalyst 4500 Series Command Reference Guide

Cisco Catalyst 4500 Series
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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.4.0SG and IOS 15.1(2)SG)
OL-27596 -01
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) Multicast Listener Discovery (MLD) Topology Change Notifications
(TCNs), use the ipv6 mld snooping tcn commands. To reset the default settings, use the no form 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 disabled.
When enabled, the default flood query count is 2.
Command Modes Global configuration mode
Command History
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 query 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 is the number of queries that are sent
before forwarding multicast data to only those ports requesting it. The range
is 1 to 10.
query solicit Enables soliciting of TCN queries.
Release Modification
12.2(25)SG This command was introduced on the Catalyst 4500.
Command Description
show ipv6 mld snooping Displays IP version 6 (IPv6) MLD snooping configuration
of the switch or the VLAN.

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Cisco Catalyst 4500 Series Specifications

General IconGeneral
SeriesCatalyst 4500 Series
CategorySwitch
Layer SupportLayer 2, Layer 3
Form FactorModular chassis
StackableNo
Chassis Slots3, 6, 7, 10
Power Supply OptionsAC, DC
RedundancyPower supply, Supervisor engine
Network ManagementCisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
FeaturesSecurity, QoS
Port DensityUp to 384 ports per chassis
Security Features802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine8-E

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