Administrator Guide
Version Description
9.7(0.0) Introduced on the S6000-ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
8.5.1.0 Added support for 4-port 40G line cards on the E-Series.
8.4.2.1 Support for the optional guard keyword was added on the C-Series, S-Series, and E-
Series.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
6.4.1.0 Expanded to display port error disable state (EDS) caused by loopback BPDU
inconsistency and Port VLAN ID inconsistency.
6.2.1.1 Introduced.
Usage Information The following describes the show spanning-tree pvst command shown in the following examples.
Field Description
Interface Name PVST interface.
Instance PVST 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 conīgured (Root, Loop, or BPDU guard).
Example (Brief)
Dell# show spanning-tree pvst vlan 3 brief
VLAN 3
Executing IEEE compatible Spanning Tree Protocol
Root ID Priority 4096, Address 0001.e801.6aa8
Root Bridge hello time 2, max age 20, forward delay 15
Bridge ID Priority 16384, Address 0001.e805.e306
Configured hello time 2, max age 20, forward delay 15
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
----------------------------------------------------------
Gi 1/0 128.130 128 20000 FWD 20000 4096 0001.e801.6aa8 128.426
Gi 1/1 128.131 128 20000 BLK 20000 4096 0001.e801.6aa8 128.427
Gi 1/16 128.146 128 20000 FWD 20000 16384 0001.e805.e306 128.146
Gi 1/17 128.147 128 20000 FWD 20000 16384 0001.e805.e306 128.147
Interface
Name Role PortID Prio Cost Sts Cost Link-type Edge
-----------------------------------------------------
Gi 1/0 Root 128.130 128 20000 FWD 20000 P2P No
Gi 1/1 Altr 128.131 128 20000 BLK 20000 P2P No
Gi 1/16 Desg 128.146 128 20000 FWD 20000 P2P Yes
Gi 1/17 Desg 128.147 128 20000 FWD 20000 P2P Yes
Example
Dell# show spanning-tree pvst vlan 2
VLAN 2
1246 Per-VLAN Spanning Tree Plus (PVST+)