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272 Spanning-Tree Commands
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Syntax
spanning-tree mst configuration
Default Setting
This command has no default configuration.
Command Mode
Global Configuration mode
User Guidelines
• All devices in an MST region must have the same VLAN mapping, configuration revision
number, and name.
Example
The following example configures an MST region.
instance (mst)
The instance MST Configuration mode command maps VLANS to an MST instance.
Syntax
instance instance-id {add | remove} vlan vlan-range
• instance-ID — ID of the MST instance (Range: 1- 8).
•
vlan-range — VLANs to be added to or removed from the specified MST instance. To
specify a range of VLANs, use a hyphen. To specify a series of VLANs, use a comma.
(Range: 1-4094).
Default Setting
VLANs are mapped to the common and internal spanning tree (CIST) instance (instance 0).
Command Modes
MST Configuration mode
User Guidelines
• All VLANs that are not explicitly mapped to an MST instance are mapped to the common
and internal spanning tree (CIST) instance (instance 0) and cannot be unmapped from the
CIST.
Console(config)# spanning-tree mst configuration
Console(config-mst) # instance 1 add vlan 10-20
Console(config-mst) # name region1
Console(config-mst) # revision 1