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User’s Manual of SGSD-1022 / SGSD-1022P
SGSW-2840 / SGSW-2840P
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Related Commands
spanning-tree mst cost
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 - Stack unit. (Range: 1)
-port - Port number. (Range: 1-28)
port-channel channel-id (Range: 1-12)
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
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: 1-28)
port-channel channel-id (Range: 1-12)
instance_id - Instance identifier of the multiple spanning tree. (Range: 0-4094, no leading zeroes)
Default Setting