Cisco 3750: Howto enable err-disabled ports

Post : Cisco 3750: Howto enable err-disabled ports
URL : http://aacable.wordpress.com/2012/12/07/cisco-3750-howto-enable-err-disabled-ports/
Posted : December 7, 2012 at 2:09 PM
Author : Syed Jahanzaib / Pinochio~:)
Tags : cisco 3750, howto enable ports on switch 3750, show interfaces status err-disabled
Categories : Cisco Related
Personnel Reference Guide:
http://aacable.files.wordpress.com/2012/12/3750.png&h=85
To enable err-disabled ports on Cisco 3750 switch series. Follow the below . . .
First make telnet connection with the switch
> telnet 10.0.0.1
(change the ip as required,)
Enter Password to continue.
To view Disabled Ports:
> show interfaces status err-disabled
e.g:
> NOC_SWITCH>show int status err-disabled
>
> Port      Name               Status                    Reason               Err-disabled Vlans
> Gi2/0/10                     err-disabled         link-flap
>
> NOC_SWITCH>
To Enable Port:
> enable
> config t
> int G2/0/10
> no switchport port-security
> shut
> no shut
> exit
Change the interface name to match your. In above example I had two 2750 models in stack mode. so its showing G2, you may get G1 if you have single switch.