Show Spanning-Tree - SMC Networks 6726AL2 Management Manual

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
Console#spanning-tree protocol-migration ethernet 1/5
Console#

show spanning-tree

This command shows the configuration for the spanning tree.
Syntax
show spanning-tree [interface]
interface
• ethernet unit/port
- unit - This is device 1.
- port - Port number. (Range: 1-26/52)
• port-channel channel-id (Range: 1-4)
Default Setting
None
Command Mode
Privileged Exec
Command Usage
• Use the show spanning-tree command with no parameters to
display the spanning tree configuration for the switch and for every
interface in the tree.
• Use the show spanning-tree interface command to display the
spanning tree configuration for a specific interface.
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