Command Line Interface
4-246
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 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
•
ethernet
unit
/
port
-
unit
- Stack unit. (Range: 1)
-
port
- Port number.
(Range: 1-28 on iES4028F/iES4028FP, 1-24 on iES4024GP)
•
port-channel
channel-id
(Range: 1-8)
•
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” on page 3-171. For a description of the
Console#spanning-tree protocol-migration eth 1/5
Console#
Summary of Contents for iES4024GP
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