Show Spanning-Tree - SMC Networks 8126PL2-F - annexe 1 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 eth 1/5
Console#

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
• ethernet unit/port
- unit - Stack unit. (Range: 1)
- port - Port number. (Range: 1-26/50)
• port-channel channel-id (Range: 1-32)
• instance-id - Instance identifier of the multiple spanning tree.
(Range: 0-4094, no leading zeroes)
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 for the Common Spanning Tree
(CST) and for every interface in the tree.
• Use the show spanning-tree interface command to display the spanning tree
configuration for an interface within the Common Spanning Tree (CST).
• Use the show spanning-tree mst instance_id command to display the
spanning tree configuration for an instance within the Multiple Spanning Tree
(MST).
• For a description of the items displayed under "Spanning-tree information,"
see "Configuring Global Settings for STA" on page 3-147. For a description of
the items displayed for specific interfaces, see "Displaying Interface Settings
for STA" on page 3-151.
Spanning Tree Commands
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