I have 100 feet of Cat 5e UTP cable wired from my server running into an attic area. After that, a crossover coupler and 90 feet of Cat5e STP cable follows. The client computer has a 100 mbps Netgear Fa311, but the server is limited to 10 mbps because I historically could not get a stable link at 100 mbps. Now I can't seem to get a stable link at even 10 mbps. The 90' run goes outside, underground, and back above ground into another building. I assume that the cable is burial grade cable, but I'm starting to wonder. I keep getting ICMP time exceeded packets. Is mixing shielded and unshielded cable the problem? This worked stably yesterday and it has been working for years. What can I tweak to deal with the timeouts or find out for sure why the connection has gotten to be so weak?
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