How to Enable a port after err-disable

Answered Question
Aug 18th, 2010
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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 11 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 11 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
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    2017 LAN

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
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  • Bronze, 100 points or more

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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