Hi, I'm troubleshooting a network consisting of 6 switches connected with fiber in a ring topology.
Some users in the network experience temporary lock-ups on their pc's, but they are al located in the same area of the building. Users in other parts of the company do not experience problems. Or they simply don't complain, but for now I assume the former.
To narrow things down, I'd like to rule out physical connections. Right now I have my doubts about the fibers they use. Those connections are about 10 years old. Switches and gbics are new, they were completely replaced last year.
Is there any way to make sure the fiber is not at fault here? I have seen troublesome connections in the past that were caused by a bad fiber, but no errors showed up on the interfaces where the gbics on both ends were connected.
Unfortunately I don't have spare connections to test.
