S
PANNING
T
REE
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OMMANDS
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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 device 1.
-port - Port number.
port-channel channel-id (Range: 1-6)
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
also use the spanning-tree protocol-migration command at any time
to manually re-check the appropriate BPDU format to send on the
selected interfaces (i.e., RSTP or STP-compatible).
Example
show spanning-tree
This command shows the configuration for the common spanning tree
(CST) or for an instance within the multiple spanning tree (MST).
Syntax
show spanning-tree [interface | mst instance_id]
interface
Console(config)#interface ethernet ethernet 1/5
Console(config-if)#spanning-tree protocol-migration
Console(config-if)#