E Commands

This chapter describes the Cisco NX-OS interface commands that begin with E.

errdisable detect cause

To enable error-disable (err-disabled) detection in an application, use the errdisable detect cause command. To disable error disable detection, use the no form of this command.

errdisable detect cause { all | link-flap | loopback }

no errdisable detect cause { all | link-flap | loopback }

 
Syntax Description

all

Enables error detection on all cases.

link-flap

Enables error disable detection on linkstate-flapping.

loopback

Enables error disable detection on loopback.

 
Command Default

Enabled

 
Command Modes

Global configuration mode

 
Command History

Release
Modification

4.2(1)N1(1)

This command was introduced.

 
Usage Guidelines

When error disable detection is enabled and a cause is detected on an interface, the interface is placed in an err-disabled state, which is an operational state that is similar to the link-down state.

Examples

This example shows how to enable the err-disabled detection on linkstate-flapping:

switch(config)# errdisable detect cause link-flap
switch(config)#
 

 
Related Commands

Command
Description

errdisable recovery

Configures recovery from the err-disabled state.

show interface status err-disabled

Displays the interface error disabled state.

errdisable recovery cause

To configure the application to bring the interface out of the error-disabled (err-disabled) state and retry coming up, use the errdisable recovery cause command. To revert to the defaults, use the no form of this command.

errdisable recovery cause { all | bpduguard | failed-port-state | link-flap-recovery | pause-rate-limit | udld }

no errdisable recovery cause { all | bpduguard | failed-port-state | link-flap-recovery | pause-rate-limit | udld }

 
Syntax Description

all

Enables a timer to recover from all causes.

bpduguard

Enables a timer to recover from bridge protocol data unit (BPDU) Guard error disable state.

failed-port-state

Enables a timer to recover from a Spanning Tree Protocol (STP) set port state failure.

link-flap

Enables a timer to recover from linkstate flapping.

pause-rate-limit

Enables a timer to recover from the pause rate limit error disabled state.

udld

Enables a timer to recover from the Unidirectional Link Detection (UDLD) error disabled state.

 
Command Default

None

 
Command Modes

Global configuration mode

 
Command History

Release
Modification

4.2(1)N1(1)

This command was introduced.

 
Usage Guidelines

When error disable recovery is enabled, the interface automatically recovers from the err-disabled state, and the device retries bringing the interface up.

Examples

This example shows how to enable error disable recovery from linkstate-flapping:

switch(config)# errdisable recovery cause link-flap
switch(config)#
 

 
Related Commands

Command
Description

errdisable detect cause

Enables the error disabled (err-disabled) detection.

show interface status err-disabled

Displays the interface error disabled state.

 

errdisable recovery interval

To configure the recovery time interval to bring the interface out of the error-disabled (err-disabled) state, use the errdisable recovery interval command. To revert to the defaults, use the no form of this command.

errdisable recovery interval time

no errdisable recovery interval

 
Syntax Description

time

Error disable recovery time interval. The range is from 30 to 65535 seconds.

 
Command Default

Disabled

 
Command Modes

Global configuration mode

 
Command History

Release
Modification

4.2(1)N1(1)

This command was introduced.

 
Usage Guidelines

When error disable recovery is enabled, the interface automatically recovers from the err-disabled state, and the device retries bringing the interface up.

The device waits 300 seconds to retry.

Examples

This example shows how to enable error disable recovery time interval to 100 seconds:

switch(config)# errdisable recovery interval 100
switch(config)#
 

 
Related Commands

Command
Description

errdisable recovery cause

Enables an error disabled recovery on an interface.

show interface status err-disabled

Displays the interface error disabled state.