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Catalyst 3750 Switch Command Reference
OL-8552-07
Chapter 2 Catalyst 3750 Switch Cisco IOS Commands
ipv6 mld snooping tcn
ipv6 mld snooping tcn
Use the
ipv6 mld snooping tcn
global configuration commands 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(25)SED
This command was introduced.
