I recently replaced 2 network hubs with a 48 port 3560 Cisco Switch. Everything seems to work great on that switch. I have another switch in the same black box, a 2950, that after installation of the new switch, started having issues with dropped packets and erratic ping times. The configuration on this switch has not change in at least a year. Also note that these switches are both on seperate fiber runs back to our main 6509 switch. After a reboot of the 2950 and a little fixing up of the fiber cables, the ping times seem to be a lot more stable, and no dropped packets.
My question is does this sound like a bad fiber patch cable? Also, I’d like to mention I rechecked the ends of the fiber patches on both the main and the 2950 switch, and all seemed to be securely fastened. Can fiber get pinch and cause loss of packets or is it more like the old 2950 switch needed to reboot to clear its tables from the old connected two hubs? Let me know what you think.