Dell PowerEdge M420 Reference Manual page 684

Syntax
show spanning-tree [{gigabitethernet
channel-number | tengigabitethernet unit/slot/port }] [instance instance-id ]
show spanning-tree [detail] [active | blockedports] | [instance
show spanning-tree mst-configuration
Parameter Description
Parameter
detail
active
blockedports
mst-configuration
instance -id
Default Configuration
This command has no default configuration.
Command Mode
Privileged EXEC mode
User Guidelines
This command has no user guidelines.
Examples
The following examples display spanning-tree information.
console#show spanning-tree
Spanning tree :Enabled - BPDU Flooding :Disabled - Portfast BPDU filtering
:Disabled - mode :rstp
CST Regional Root:
Regional Root Path Cost:
ROOT ID
684
Spanning Tree Commands
Description
Displays detailed information.
Displays active ports only.
Displays blocked ports only.
Displays the MST configuration identifier.
ID of the spanning -tree instance.
80:00:00:1E:C9:AA:AD:1B
0
Priority 32768
Address 0010.1882.1C53
Path Cost 20000
unit/slot/port
| port-channel
port-
instance-id
]