3750 Switch .. port not working

[Amro Gaffar Khalil]

Hiii

 I have a problem with switch 3750 port not working.. its not spanning tree issu .. but if i restart the switch or moved cable to another port then lif is good.. this happening frequently...any idea ?

Thanks

[Leo Laohoo]

This sounds like the port has gone into "error-disable".  

When this happens, can you post the output to the command "sh interface status err"?

[procopius1980]

Also please show us the output on the sh int g1/0/1 counters errors (insert your port number).  This is also handy on troubleshooting bad interfaces.  See if the same input/output errors increment when you move the cable to another port.