We have Catalyst 6506 Core Switch with WS-X6416-GBIC card.
On this card 4 nos of Ports got in to the errordisable state suddenly.
So I have made them enable but than also the ports were not communicating. Port shows the physical connectivity but using this port no vtp database flowing.
I have also checked the fiber connectivity and GBIC. No problem in Fiber or GBIC because I have chekced fiber core and GBIC from other ports they r working.
Now what could be the problem ?
How can I troubleshoot it and identify this problem ?
If you requre more detail, I will send u ...........
Pls help !!!!!!!!!!!