Show Spanning-Tree Mst - Cisco 4500M Command Reference Manual

Chapter2 Cisco IOS Commands for the Catalyst 4500 Series Switches

show spanning-tree mst

To display MST protocol information, use the show spanning-tree mst command.
Syntax Description
configuration
instance-id
detail
interface interface
Defaults
This command has no default settings.
Command Modes
Privileged EXEC
Command History Release
12.1(12c)EW
Usage Guidelines
This command is not supported on systems configured with a Supervisor Engine 1.
In the output display of the show spanning-tree mst configuration command, a warning message might
display. This message appears if you do not map secondary VLANs to the same instance as the associated
primary VLAN. The display includes a list of the secondary VLANs that are not mapped to the same
instance as the associated primary VLAN. The warning message is as follows:
These secondary vlans are not mapped to the same instance as their primary:
-> 3
See the
Examples
This example shows how to display region configuration information:
Switch# show spanning-tree mst configuration
Name
Revision
Instance
--------
0
1
-------------------------------------------------------------------------------
78-16201-01
show spanning-tree mst [configuration]
show spanning-tree mst [instance-id] [detail]
show spanning-tree mst [instance-id] interface interface [detail]
(Optional) Displays region configuration information.
(Optional) Instance identification number; valid values are from 0 to 15.
(Optional) Displays detailed MST protocol information.
(Optional) Interface type and number; valid values for type are FastEthernet,
GigabitEthernet, port-channel, and vlan. See "Usage Guidelines" for more
information.
Modification
Support for this command was introduced on the Catalyst 4500 series switch.
show spanning-tree command for output definitions.
[leo]
2702
Vlans mapped
---------------------------------------------------------------------
1-9,11-19,21-29,31-39,41-4094
10,20,30,40
Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
show spanning-tree mst
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