Configuring per-port per-VLAN spanning tree

Syntax 

spanning-tree pathcostrapid-pvst | mstp[8021d | 8021t | proprietary]
no spanning-tree pathcostrapid-pvst | mstp[8021d | 8021t | proprietary]

Specify a standard to use when calculating the default pathcost.

Default: 8021t

NOTE:

All devices in the network should be configure to use same pathcost mode for proper functioning.

Syntax: 

spanning-tree port port-#: vlan vid-list path-cost {auto | [1...200000000]}
no spanning-tree port port-#: vlan vid-list path-cost {auto | [1...200000000]}

Sets the path cost for a single port on the specified VLAN(s). If the port is a member of more than one VLAN, the path-cost applies only where the port has traffic for the VLAN(s) specified.

Default: auto

Range: 1 - 200000000

The no form of the command returns path-cost to its default setting.

Syntax: 

spanning-tree port port-number vlan vid-list priority <0-15> path-costauto | <Path-Cost> 
no spanning-tree port port-number vlan vid-list priority <0-15> path-costauto | <Path-Cost>

Sets the port priority for the specified VLANs. The value is in the range of 0-240 divided into steps of 16 that are numbered 0 to 15. The default is step 16.

The per-port per-VLAN priority is used to help choose the root port for a switch on the specified VLAN if there are multiple links to the root switch.

Default: 8

Range 0 - 15

The no form of the command sets the priority to its default value.