Administrator Guide

Example (EDS/
PVID)
Dell#show spanning-tree pvst vlan 2 interface tengigabitethernet 1/0
TenGigabitEthernet 1/0 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 1/0 128.1223 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 0/1 5 INCON(Root) Rootguard
Te 0/2 5 FWD Loopguard
Te 0/3 5 EDS(Shut) Bpduguard
Related
Commands
spanning-tree pvst — configure PVST+ on an interface.
spanning-tree pvst
Configure 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.
C9000 Series
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 configure 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.
vlan vlan-range Enter the keyword vlan then the VLAN numbers. The range is from 1 to 4094.
cost number Enter the keyword cost then the port cost value. The range is from 1 to 200000.
Defaults:
● 10-Gigabit Ethernet interface = 2000.
● Port Channel interface with one 10 Gigabit Ethernet = 2000.
● Port Channel with two 10 Gigabit Ethernet = 1800.
priority value Enter the keyword priority then the Port priority value in increments of 16. The
range is from 0 to 240. The default is 128.
1286 Per-VLAN Spanning Tree Plus (PVST+)