Fujitsu PRIMERGY BX900 User Manual page 668

If the 'external-cost' token is specified, this command sets the path cost for this port within a multiple
spanning tree instance or the common and internal spanning tree instance, depending on the <0-4094>
parameter. The pathcost can be specified as a number in the range of 1 to 200000000 or auto. If "auto" is
specified, the pathcost value will be set based on Link Speed.
Syntax
spanning-tree mst <0-4094> external-cost {<1-200000000> | auto}
no spanning-tree mst <0-4094> external-cost
<0-4094> - multiple spanning tree instance ID.
no - This command sets the External Path Cost for this port within the multiple spanning tree instance
or in the common and internal spanning tree to the respective default values. If the <0-4094>
parameter corresponds to an existing multiple spanning tree instance, then the configurations are
done for that multiple spanning tree instance. If however, 0 (defined as the default CIST ID) is passed
as the <0-4094>, then the configurations are performed for the common and internal spanning tree
instance.
If the 'cost' token is specified, this command sets the path cost for this port within a multiple spanning
tree instance or the common and internal spanning tree instance, depending on the <0-4094>
parameter, to the default value, that is, a pathcost value based on the Link Speed.
Default Setting
Cost : auto
Command Mode
Interface Config
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