How to Enable a port after err-disable

Answered Question
Aug 18th, 2010

Hello

I had a port get disabled because of a feedback loop. Plugged it back Iin and cannot re-enabled via CNA

Is there a command to re-enable the port

The document i found suggest using the shut down then no shut down command

Is that safe ? will it kick all ports ?

Cisco Catalyst 3750

Thanks

Correct Answer by podhillo about 6 years 6 months ago

Hi,

We can use 'shut' , 'no shut' and we can configure the switch to recover automatically.

Commands are as follows:

errdisable detect cause command 2-140

errdisable detect cause small-frame comand 2-143

errdisable recovery cause small-frame 2-145

errdisable recovery command 2-146

error conditions, displaying 2-469

more details of the commands link:

http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_44_se/command/reference/ComRef.html#LTR_E

Hope this helps!

Regards,

podhillo

Correct Answer by Reza Sharifi about 6 years 6 months ago

Hi

Yes, Just do a sh and no sh on that port.  That should enable the port again.

HTH

Reza

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Correct Answer
Reza Sharifi Wed, 08/18/2010 - 09:41

Hi

Yes, Just do a sh and no sh on that port.  That should enable the port again.

HTH

Reza

Correct Answer
podhillo Wed, 08/18/2010 - 10:19

Hi,

We can use 'shut' , 'no shut' and we can configure the switch to recover automatically.

Commands are as follows:

errdisable detect cause command 2-140

errdisable detect cause small-frame comand 2-143

errdisable recovery cause small-frame 2-145

errdisable recovery command 2-146

error conditions, displaying 2-469

more details of the commands link:

http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_44_se/command/reference/ComRef.html#LTR_E

Hope this helps!

Regards,

podhillo

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