Users Guide

When the recovery option is enabled, the port is brought up after the recovery timer expires.
When the recovery option is disabled, the port is shut down indefinitely. You must manually bring up the
port using the shutdown and no shutdown commands.
The no version of the command disables the recovery option.
Example
OS10(config)# errdisable recovery cause bpduguard
Supported
Releases
10.4.2.0 or later
errdisable recovery interval
Configures recovery interval timer to delay the recovery of ports when there is a BPDU Guard violation.
Syntax
errdisable recovery interval interval-value
Parameters interval-value—Enter the time interval in seconds. The range is from 30 to 65535.
Default 300 seconds
Command Mode CONFIGURATION
Usage
Information
This command applies only to STP-enabled ports. The command takes effect only when the BPDU guard
is configured on a port. The recovery timer value is applicable only for shutdown case. For blocking case,
the default value of 300 seconds is used.
The recovery timer starts whenever there is a BPDU guard violation.
The no version of the command resets the timer to the default value.
Example
OS10(config)# errdisable recovery interval 45
Supported
Releases
10.4.2.0 or later
clear spanning-tree detected-protocol
Forces the ports to renegotiate with neighbors.
Syntax
clear spanning-tree detected-protocol [interface {ethernet node/slot/
port[:subport] | port-channel number}]
Parameters
● interface — Enter the interface type:
○ ethernet node/slot/port[:subport] — Enter the Ethernet interface information, from 1
to 48.
○ port-channel number — Enter the port-channel number, from 1 to 128.
Default Not configured
Command Mode EXEC
Usage
Information
Use this command to force the port to re-negotiate with neighbors. If you use this command without
parameters, the command applies to each device port.
Example
OS10# clear spanning-tree detected-protocol interface ethernet 1/1/1
Supported
Release
10.2.0E or later
472 Layer 2