If the pathcost method is long, the default configuration is:
•
Ethernet (10 Mbps) - 2,000,000
•
Fast Ethernet (100 Mbps) - 200,000
•
Gigabit Ethernet (1000 Mbps) - 20,000
•
Port-Channel - 20,000
Command Mode
Global Configuration mode
User Guidelines
This command applies to all spanning tree instances on the switch.
If the short method is chosen, the default cost value is in the range of 1 through 65,535.
If the long method is chosen, the default cost value is in the range of 1 through 200,000,000.
Examples
The following example specifies the long pathcost method.
Console# spanning-tree pathcost method long
spanning-tree mst priority
The spanning-tree mst priority global configuration command configures the device priority for
the specified spanning-tree instance. To return to the default setting, use the no form of this
command.
Syntax
spanning-tree mst instance-id priority priority
no spanning-tree mst instance-id priority
•
instance-id—ID of the spanning -tree instance (Range: 1-15).
•
priority—Device priority for the specified spanning-tree instance (Range: 0-61440).
Default Configuration
The default bridge priority for IEEE STP is 32768.
Command Mode
Global Configuration mode
392
Spanning-Tree Commands