Spanning-Tree Mst Configuration - Cisco Catalyst 3560-X Command Reference Manual

Chapter 2 Catalyst 3750-X and 3560-X Cisco IOS Commands

spanning-tree mst configuration

Syntax Description
Defaults
Command Modes
Command History
Usage Guidelines
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Use the spanning-tree mst configuration global configuration command on the switch stack or on a
standalone switch to enter multiple spanning-tree (MST) configuration mode through which you
configure the MST region. Use the no form of this command to return to the default settings.
spanning-tree mst configuration
no spanning-tree mst configuration
This command has no arguments or keywords.
The default mapping is that all VLANs are mapped to the common and internal spanning-tree (CIST)
instance (instance 0).
The default name is an empty string.
The revision number is 0.
Global configuration
Release
12.2(53)SE2
The spanning-tree mst configuration command enables the MST configuration mode. These
configuration commands are available:
abort: exits the MST region configuration mode without applying configuration changes.
•
exit: exits the MST region configuration mode and applies all configuration changes.
•
• instance instance-id vlan vlan-range: maps VLANs to an MST instance. The range for the
instance-id is 1 to 4094. The range for vlan-range is 1 to 4094. You can specify a single VLAN
identified by VLAN ID number, a range of VLANs separated by a hyphen, or a series of VLANs
separated by a comma.
name name: sets the configuration name. The name string has a maximum length of 32 characters
•
and is case sensitive.
no: negates the instance, name, and revision commands or sets them to their defaults.
•
private-vlan: Though visible in the command-line help strings, this command is not supported.
•
revision version: sets the configuration revision number. The range is 0 to 65535.
•
show [current | pending]: displays the current or pending MST region configuration.
•
In MST mode, the switch or switch stack supports up to 65 MST instances. The number of VLANs that
can be mapped to a particular MST instance is unlimited.
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Modification
This command was introduced.
Catalyst 3750-X and 3560-X Switch Command Reference
spanning-tree mst configuration
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