The network connection in one of my classrooms dropped several weeks back. As the classroom was barely used, it wasn't a high priority.
Anyway, doing the diagnostics pointed to the wall socket being faulty. That's now been resolved but I've still got no network connection in the room.
I've bunged a LAN tester on (nothing fancy, just continuity/wire order) and it shows that the cabling is fine from the plug going into the back of the PC all the way up to the plug going into the switch (i.e. all wires in the cabling connected & in the correct order). The network is Cat5e (& I use 568B wiring order everywhere if that makes a difference).
I've tried 4 different ports on 2 different switches, 2 different PCs, & new cables on either side of the run from classroom to switch, but still get no joy. No life on the NIC LEDs or the switch LEDs. Nothing. Nada. Nix. Zilch. Not a sausage.
From the PC to the wall socket c.14m (I know, I know, but teachers will insist on moving things around!), and from the Wall socket to the switch c.34m...
Is there a connection at all?
Have you tried with another computer?
I've even checked that the NICs haven't randomly become disabled (which has happened to me before!) but they're quite happy, just sat there, smugly displaying "network cable unplugged". I wonder if the County Network team have performed their ritual sacrifices to the Networking Gods this month...
Did you try another computer?
Still, stranger things have happened...
I had a similar problem and it turned out to be the patch lead from the panel to the switch.
Have you power cycled the switch(s)?
Tried a different switch? would rule out/in cabling issues.
Have you tried re-terminating the run at both ends?
I found a point the other day that some muppet a forced the socket through on which caused the pins not to connect correctly. After re-assembling the point it worked fine.
i had a similar problem once and it turned out to be a cross over not straight through cable (or the other way round can never remember which)
Given the senario I'd start by testing the connection with another PC.
Have you double checked the wiring. I spend ages on a problem here, the previous tech had made the same wiring mistake on both ends of a connection (he'd put the 4 pairs next to each other instead of placing one middle pair inside the other), it tested fine on a dumb tester but wouldn't carry any data.
If the PC is ancient try forcing the switch down to 100m/b.
There are currently 1 users browsing this thread. (0 members and 1 guests)