Fortinet 548B Administration Manual page 216

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 <1-4094>
parameter. The port-priority value is a number in the range of 0 to 240 in increments of 16.
Syntax
spanning-tree mst <1-4094> port-priority <0-240>
no spanning-tree mst <1-4094> port-priority
<1-4094> - 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
<1-4094> 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 <1-4094>, 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 <1-4094>
parameter, to the default value, that is, 128.
Default Setting
port-priorty : 128
Command Mode
Interface Config
7.4.2.11 spanning-tree port mode
This command sets the Administrative Switch Port State for this port to enabled.
Syntax
spanning-tree port mode
no spanning-tree port mode
no - This command sets the Administrative Switch Port State for this port to disabled.
Default Setting
Disabled
Command Mode
Interface Config
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