Fortinet MR1 - Manual (Page 179)

179
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
This command sets the Path Cost or Port Priority for this port within the multiple spanning
tree instance or in the common and internal spanning tree. 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 ‘port-priority’ token is specified, this command sets the priority for this port within a
specific multiple spanning tree instance or the common and internal spanning tree instance,
depending on the <0-4094> parameter. The port-priority value is a number in the range of 0
to 240 in increments of 16.
Syntax
spanning-tree mst <0-4094> port-priority <0-240>
no spanning-tree mst <0-4094> port-priority
<0-4094> - multiple spanning tree instance ID.
no - This command sets the Path Cost or Port Priority 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 ‘port-priority’ token is specified, this command sets the priority for this port within a specific multiple
spanning tree instance or the common and internal spanning tree instance, depending on the <0-4094>
parameter, to the default value, that is, 128.
Default Setting
port-priorty : 128
Command Mode