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Cisco ME 3800X and ME 3600X Switch Command Reference
OL-28238-01
Chapter
spanning-tree mst configuration
spanning-tree mst configuration
To enter multiple spanning-tree (MST) configuration mode through which you configure the MST
region, use the spanning-tree mst configuration command in global configuration mode. To return to
the default settings, use the no form of this command.
spanning-tree mst configuration
no spanning-tree mst configuration
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
Usage Guidelines 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 0 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: Although 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 supports up to 16 MST instances. The number of VLANs that can be mapped
to a particular MST instance is unlimited.
Release Modification
12.2(52)EY This command was introduced.
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