Can an Ethernet cable suddenly stop working?

mrnorrisman

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Oct 19, 2013
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Background info:
I have my old gaming computer set up in my closet that hosts a small 2 person modded Minecraft server. Last night I was on the server with a friend and all of the sudden the server "crashed" it said "Server Closed." I assumed I could just restart the server and everything would be fine, however when I went to check the server computer, there was no internet...

Troubleshooting I have tried:
The server connects to my router via an Ethernet cable that I ran under our house (I know its not ideal) and had been working fine for several months. The cable has been there about 2 years with no issues. On the computer it said the Ethernet was unplugged (it clearly wasn't). I went through several troubleshooting steps such as restarting the router and computer and unplugging and re-plugging with no success. I eventually tried my laptop on the cable, and it wasn't getting internet from the router either (which was a good sign because it means the computer most likely doesn't have an issue). I then went to the router end of the cable and unplugged it and attached it to my laptop, then shared the laptops Wifi connection over the Ethernet port. The server computer still did not have internet even though it should have been shared through the laptop. (As a side note, the laptop did not even detect that a cable had been plugged in at any point).

Question:
Is it possible for an Ethernet cable to suddenly just go bad instantly? I assumed it would show some sign of wear at one of the connectors or along the cable. Nothing got moved or yanked, as it was completely static between my server PC and the router...

Will I need to run a new cable under my house, or are there other steps that I can try for troubleshooting?

P.S. No, I do not want to use a WiFi adapter for the server ;)
 
Solution
Patch cables go bad quite often when they are unplugged and plugged in all the time. The connector can work just slightly loose. Cut off and re terminate normally fixes it.

Most cables that are in the wall are almost immune but the jacks can go bad. Your cables under the house though are subject to dampness and things like mice. If they touch the ground and it is even slightly damp mineral in the ground can eat the plastic coating. You may want to use outdoor/direct bury cable or put it in cheap conduit to protect it.
Patch cables go bad quite often when they are unplugged and plugged in all the time. The connector can work just slightly loose. Cut off and re terminate normally fixes it.

Most cables that are in the wall are almost immune but the jacks can go bad. Your cables under the house though are subject to dampness and things like mice. If they touch the ground and it is even slightly damp mineral in the ground can eat the plastic coating. You may want to use outdoor/direct bury cable or put it in cheap conduit to protect it.
 
Solution

mrnorrisman

Honorable
Oct 19, 2013
20
0
10,520


The cable rarely gets unplugged and plugged in so I doubt that is the issue. The dampness is quite possible, we have had a huge amount of rain in the past month and who knows that the situation is under our house.
I may try to replace the connectors because it would be way easier (and probably cheaper) than running a new cable, I'd just have to borrow the tool from my robotics club... :)