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PANNING
T
REE
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OMMANDS
4-225
Command Usage
• This command defines the priority for the use of an interface in the
multiple spanning-tree. If the path cost for all interfaces on a switch are
the same, the interface with the highest priority (that is, lowest value)
will be configured as an active link in the spanning tree.
• Where more than one interface is assigned the highest priority, the
interface with lowest numeric identifier will be enabled.
Example
Related Commands
spanning-tree mst cost (4-223)
spanning-tree protocol-migration
This command re-checks the appropriate BPDU format to send on the
selected interface.
Syntax
spanning-tree protocol-migration interface
interface
• ethernet unit/port
- unit - This is unit 1.
- port - Port number. (Range: 1-8)
• port-channel channel-id (Range: 1-4)
Command Mode
Privileged Exec
Command Usage
If at any time the switch detects STP BPDUs, including Configuration
or Topology Change Notification BPDUs, it will automatically set the
selected interface to forced STP-compatible mode. However, you can
Console(config)#interface ethernet ethernet 1/5
Console(config-if)#spanning-tree mst 1 port-priority 0
Console(config-if)#