Users Guide

Bpdu guard :disable (default)
Bpdus sent 152, received 27562
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
-----------------------------------------------------------
Te 1/1/1/1 128.1223 128 20000 EDS 0 32768 0001.e800.a12b 128.1223
Example (EDS/
PVID)
Dell# show spanning-tree pvst vlan 2 interface tengigabitethernet 1/1/1/1
TenGigabitEthernet 1/1/1/1 of VLAN 2 is PVID_INC discarding
Edge port:no (default) port guard :none (default)
Link type: point-to-point (auto) bpdu filter:disable (default)
Bpdu guard :disable (default)
Bpdus sent 1, received 0
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
---------------------------------------------------------
Te 1/1/1/1 128.1223 128 20000 EDS 0 32768 0001.e800.a12b 128.1223
Example (Guard)
Dell# show spanning-tree pvst vlan 5 guard
Interface
Name Instance Sts Guard type
-----------------------------------
Te 1/1/1/1 5 INCON(Root) Rootguard
Te 1/1/2/1 5 FWD Loopguard
Te 1/1/3/1 5 EDS(Shut) Bpduguard
Dell#
Related Commands
• spanning-tree pvst — congure PVST+ on an interface.
spanning-tree pvst
Congure a PVST+ interface with one of these settings: edge port with optional bridge port data unit (BPDU) guard, port disablement if an
error condition occurs, port priority or cost for a VLAN range, loop guard, or root guard.
Syntax
spanning-tree pvst {edge-port [bpduguard [shutdown-on-violation]] | err-disable
| vlan vlan-range {cost number | priority value} | loopguard | rootguard}
Parameters
edge-port Enter the keywords edge-port to congure the interface as a PVST+ edge port.
bpduguard
Enter the keyword portfast to enable Portfast to move the interface into Forwarding
mode immediately after the root fails.
Enter the keyword bpduguard to disable the port when it receives a BPDU.
shutdown-on-
violation
(OPTIONAL) Enter the keywords shutdown-on-violation to hardware disable an
interface when a BPDU is received and the port is disabled.
err-disable Enter the keywords err-disable to enable the port to be put into the error-disable
state (EDS) if an error condition occurs.
Per-VLAN Spanning Tree Plus (PVST+) 1205