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Port path cost 4, Port priority 8, Port Identifier 8.28
Designated root has priority 32768, address 0001.e800.0a56
Designated bridge has priority 32768, address 0001.e800.0a56
Designated port id is 8.28, designated path cost 0
Timers: message age 0, forward_delay 0, hold 0
Number of transitions to forwarding state 1
BPDU: sent:31, received 0
The port is not in the portfast mode
Dell#
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 0/1 0 INCON(Root) Rootguard
Te 0/2 0 LIS Loopguard
Te 0/3 0 EDS (Shut) Bpduguard
1780
Spanning Tree Protocol (STP)