
spanning-tree  mst instance port-priority 
Use the 
spanning-tree  mst instance<instance-id> port-priority  <priority>
SYNTAX DESCRIPTION: <instance>  | Integer ranges from 0 to 64  | 
<priority>  | Valid priority values are 0, 16, 32, 48, 64, 80, 96, 112,  | 
128, 144, 160, 176, 192, 208, 224, and 240. All other values are rejected.
DEFAULT VALUE:
COMMAND MODES: Interface configuration
REFERENCE:
MENU:
EXAMPLE:
!Set CIST port priority 64 on port 4 for instance 8 Switch(config)# interface fastethernet0/4 
spanning-tree  mst instance cost
Use the 
spanning-tree  mst <instance> cost <cost>
SYNTAX DESCRIPTION:  | <instance> | Integer ranges from 1 to 64 | 
  | <cost> | Integer ranges from 1 to 200000000, 0 for auto detect  | 
DEFAULT VALUE:  | auto.  | 
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COMMAND MODES:  | Interface configuration | |
REFERENCE:  | 
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MENU:  | 
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EXAMPLE:
!Set CIST port path cost 1000 on port 4 for instance 8 Switch(config)# interface fastethernet0/4