DELL 9.8(0.0) User Manual

Example (Brief)

Dell#show span 0 brief

  Executing IEEE compatible Spanning Tree Protocol

    Root ID Priority 32768

      Address 0001.e800.0a56

    Root Bridge hello time 2, max age 20, forward delay 15

    Bridge ID Priority 32768,

      Address 0001.e800.0a56

    Configured hello time 2, max age 20, forward delay 15

Interface                        Designated

Name   PortID Prio Cost Sts Cost Bridge ID            PortID

-------------- ------ ---- ---- --- ----- ------------------

Te 1/1 8.26   8   4     FWD 0    32768 0001.e800.0a56 8.26

Te 1/2 8.27   8   4     FWD 0    32768 0001.e800.0a56 8.27

Te 1/3 8.28   8   4     FWD 0    32768 0001.e800.0a56 8.28

Dell#

Usage 
Information

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

Field

Description

Interface Name

STP interface.

Instance

STP 0 instance.

Sts

Port state: root-inconsistent (INCON Root), forwarding 
(FWD), listening (LIS), blocking (BLK), or shut down (EDS 
Shut).

Guard Type

Type of STP guard configured (Root, Loop, or BPDU guard).

Example 
(Guard)

Dell#show spanning-tree 0 guard

Interface

Name      Instance   Sts         Guard type

--------  --------  ---------    ----------

Te 1/1      0       INCON(Root)  Rootguard

Te 1/2      0       LIS          Loopguard

Te 1/3      0       EDS (Shut)   Bpduguard

spanning-tree

Assigns a Layer 2 interface to STP instance 0 and configures a port cost or port priority, or enables loop 

guard, root guard, or the Portfast feature on the interface.

Syntax

spanning-tree stp-id {cost cost | {loopguard | rootguard} | 
portfast [bpduguard [shutdown-on-violation]] | priority 
priority}
To disable Spanning Tree group on an interface, use the no spanning-tree 
stp-id {cost cost | {loopguard | rootguard} | portfast 
[bpduguard [shutdown-on-violation]] | priority priority} 
command.

Spanning Tree Protocol (STP)

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