Field
Description
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).
Bpdu Filter
Yes - Bpdu filter Enabled
No - Bpdu filter Disabled
Example (Brief)
Dell# show spanning-tree pvst vlan 2 brief
VLAN 2
Executing IEEE compatible Spanning Tree Protocol
Root ID Priority 32768, Address 001e.c9f1.00f3
Root Bridge hello time 2, max age 20, forward delay 15
Bridge ID Priority 32768, Address 001e.c9f1.00f3
We are the root of Vlan 2
Configured hello time 2, max age 20, forward delay 15
Bpdu filter disabled globally
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID
PortID
---------- -------- ---- ------- --- -------
---------------------
Po 23 128.24 128 1600 FWD 0 32768 001e.c9f1.00f3
128.24
Te 5/41 128.450 128 2000 DIS 0 32768 001e.c9f1.00f3
128.450
Te 5/50 128.459 128 2000 FWD 0 32768 001e.c9f1.00f3
128.459
Interface Bpdu
Name Role PortID Prio Cost Sts Cost Link-type Edge
Filter
---------- ------ -------- ---- ------- --- -------- ----
------
Po 23 Desg 128.24 128 1600 FWD 0 P2P No No
Te 5/41 Dis 128.450 128 2000 DIS 0 P2P No No
Te 5/50 Desg 128.459 128 2000 FWD 0 P2P No No
Dell#
Example
Dell#show spanning-tree pvst vlan 2
VLAN 2
Root Identifier has priority 32768, Address 001e.c9f1.00f3
Root Bridge hello time 2, max age 20, forward delay 15
Bridge Identifier has priority 32768, Address 001e.c9f1.00f3
Configured hello time 2, max age 20, forward delay 15
Bpdu filter disabled globally
We are the root of VLAN 2
Current root has priority 32768, Address 001e.c9f1.00f3
Number of topology changes 0, last change occurred 3d1h ago on
Port 24 (Port-channel 23) is designated Discarding
Port path cost 1600, Port priority 128, Port Identifier 128.24
Designated root has priority 32768, address 001e.c9f1.00:f3
Designated bridge has priority 32768, address 001e.c9f1.00:f3
Designated port id is 128.24 , designated path cost 0
1064
Per-VLAN Spanning Tree Plus (PVST+)
