Spanning-Tree Pvst Err-Disable - Dell Z9500 Command Reference Manual

Enabling Portfast BPDU guard and loop guard at the same time on a port results in
a port that remains in a Blocking state and prevents traffic from flowing through it.
For example, when Portfast BPDU guard and loop guard are both configured:
•
•
Example
Dell(conf-if-te-1/1)#spanning-tree pvst vlan 3 cost 18000
Dell(conf-if-te-1/1)#end
Dell(conf-if-te-1/1)#show config
!
interface TenGigabitEthernet 1/1
Dell(conf-if-te-1/1)#end
Related
show spanning-tree pvst
Commands

spanning-tree pvst err-disable

Place ports in an Err-Disabled state if they receive a PVST+ BPDU when they are members an untagged
VLAN.
Z9500
Syntax
spanning-tree pvst err-disable cause invalid-pvst-bpdu
Defaults Enabled; ports are placed in the Err-Disabled state if they receive a PVST+ BPDU
when they are members of an untagged VLAN.
Command INTERFACE
Modes
Command
This guide is platform-specific. For command information about other platforms,
History
refer to the relevant Dell Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version
9.2(1.0)
8.3.19.0
8.3.11.1
1466
If a BPDU is received from a remote device, BPDU guard places the port in an
Err-Disabled Blocking state and no traffic is forwarded on the port.
If no BPDU is received from a remote device, loop guard places the port in a
Loop-Inconsistent Blocking state and no traffic is forwarded on the port.
no ip address
switchport
spanning-tree pvst vlan 3 cost 18000
no shutdown
— views the PVST+ configuration.
Description
Introduced on the Z9500.
Introduced on the S4820T.
Introduced on the Z9000.
Per-VLAN Spanning Tree Plus (PVST+)