Command Line Interface
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• For a description of the items displayed under “Spanning-tree information,”
see “Configuring Global Settings” on page 3-141. For a description of the
items displayed for specific interfaces, see “Displaying Interface Settings” on
page 3-145.
Example
Console#show spanning-tree
Spanning Tree Information
---------------------------------------------------------------
Spanning Tree Mode: RSTP
Spanning Tree Enabled/Disabled: Enabled
Instance: 0
VLANs Configuration: 1-4094
Priority: 32768
Bridge Hello Time (sec.): 2
Bridge Max Age (sec.): 20
Bridge Forward Delay (sec.): 15
Root Hello Time (sec.): 2
Root Max Age (sec.): 20
Root Forward Delay (sec.): 15
Max Hops: 20
Remaining Hops: 20
Designated Root: 32768.0013F7123456
Current Root Port: 25
Current Root Cost: 5000
Number of Topology Changes: 3
Last Topology Change Time (sec.): 5
Transmission Limit: 3
Path Cost Method: Long
---------------------------------------------------------------
Eth 1/ 1 information
---------------------------------------------------------------
Admin Status: Enabled
Role: Designate
State: Forwarding
Admin Path Cost: 0
Oper Path Cost: 100000
Priority: 128
Designated Cost: 5000
Designated Port: 128.1
Designated Root: 32768.0013F7123456
Designated Bridge: 32768.0016B6F03BEC
Fast Forwarding: Enabled
Forward Transitions: 1
Admin Edge Port: Enabled
Oper Edge Port: Enabled
Admin Link Type: Auto
Oper Link Type: Point-to-point
Spanning Tree Status: Enabled
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