pvstplus-protect

Prevents flooding and resulting port blocking on an interface when a Per-VLAN Spanning Tree Plus (PVST+) packet is received on a port configured for Multiple Spanning Tree Protocol (MSTP), blocking the PVST+ Bridge Protocol Data Unit (BPDU) and marking the port as ERR-DISABLED.
Syntax
pvstplus-protect
no pvstplus-protect
Command Default

PVST+ Protect is disabled.

Modes

Interface configuration mode

Usage Guidelines

This command cannot be executed concurrently with the pvst-mode command.

When you use the pvstplus-protect command, you must also use the global errdisable recovery pvstplus-protect command to enable ports to recovery from the error-disabled state.

The no form of the command disables PVST+ Protect.

Examples

The following example enables PVST+ Protect on a single port. 

device(config)# interface ethernet 1/1/1
device(config-if-1/1/1)# pvstplus-protect

The following example enables PVST+ Protect on a range of ports. 

device(config)# interface ethernet 1/1/1 to 1/1/4
device(config-mif-1/1/1-1/1/4)# pvstplus-protect
History
Release version Command history
08.0.30mb This command was introduced.
Parent topic: Commands O, P, Q, R, and Sa through Sh