Spanning-Tree Mst Configuration - Cisco Catalyst 3560X-24P Command Reference Manual

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

spanning-tree mst configuration

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.
Syntax Description
This command has no arguments or keywords.
Defaults
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.
Command Modes Global configuration
Command History Release
12.2(53)SE2
Usage Guidelines
The spanning-tree mst configuration command enables the MST configuration mode. These
configuration commands are available:
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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.
OL-21522-02
spanning-tree mst configuration
no spanning-tree mst configuration
Modification
This command was introduced.
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.
Catalyst 3750-X and 3560-X Switch Command Reference
spanning-tree mst configuration
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