Usage Information

Example

VersionDescription

7.5.1.0Introduced on the C-Series.

6.2.1.1Introduced on the E-Series.

Enable spanning tree group 0 prior to using this command.

The following describes the show spanning-tree 0 command shown in the example.

Field

Description

“Bridge

Lists the bridge priority and the MAC address for this STP

Identifier...”

bridge.

“Configured

Displays the settings for hello time, max age, and forward

hello...”

delay.

“We are...”

States whether this bridge is the root bridge for the STG.

“Current root...”

Lists the bridge priority and MAC address for the root bridge.

“Topology flag...”

States whether the topology flag and the detected flag were

 

set.

 

“Number of...”

Displays the number of topology changes, the time of the

 

last topology change, and on what interface the topology

 

change occurred.

“Timers”

Lists the values for the following bridge timers: hold time,

 

topology change, hello time, max age, and forward delay.

“Times”

List the number of seconds since the last:

 

hello time

 

topology change

 

notification

 

aging

“Port 1...”

Displays the Interface type slot/port information and the

 

status of the interface (Disabled or Enabled).

“Port path...”

Displays the path cost, priority, and identifier for the

 

interface.

“Designated

Displays the priority and MAC address of the root bridge of

root...”

the STG that the interface belongs.

“Designated

Displays the designated port ID.

port...”

 

 

Dell#show spann 0

Executing IEEE compatible Spanning Tree Protocol

Bridge Identifier has priority 32768, Address 0001.e800.0a56 Configured hello time 2, max age 20, forward delay 15

We are the root of the spanning tree

Current root has priority 32768 address 0001.e800.0a56

Spanning Tree Protocol (STP)

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Dell 9.7(0.0) manual Field Description Bridge, Identifier, We are, Current root, Topology flag, Timers, Times, Port path