Really odd problem today.
I have an industrial touchscreen on our shop floor that won't stay networked. It's hard wired and well under 300 ft. When I first plug it in, I get a network connection instantly and everything works perfectly for about 12 hours. Then I lose http access. I can still ping, VNC, RDP, etc. Just can't access any webpages from the touchscreen.
After verifying that all of my settings are correct, I reboot. Then I don't get any network access. The NIC says "cable unplugged". I'm sure it's not the touchscreen because it works perfectly if I move it somewhere else. I ran a new cable, same thing. It ran for about 12 hours, then lost its http only. I tried a different touchscreen and new cable, same thing.
What could cause this. I know the switch isn't bad because the other touchscreens in the same switch are all working perfectly. I also tried different ports in the switch.
Thanks for any input.