Posted on 2008-11-19
I have a Dell PowerConnect 6224 (managed switch) and a SMC SMCGS16 (unmanaged switch). A cat6 cable is running from a device with a T-1 connection into my rack. I don't know a lot about the device or cable, but I believe it is a managed switch and I believe the cat6 cable is a straight through cable.
Also, I have 8 computers connected to both switches, eth0 connects to the Dell, eth1 connects to the SMC. Both switches recognize every computer.
Now, when I connect the cat6 cable to the PowerConnect managed switch, it isn't recognized. No lights light up on either end. But when I connect the cat6 cable to the SMC unmanaged switch, it recognizes it and lights up.
My goal is to connect to the Dell PowerConnect switch. Initially, I thought it was a straight through cable and I needed a crossover cable. But then I tried connecting it to the SMC switch and it connected fine. I called the IT guys that ran the cables and they said its a straight through cable, so that's likely what it is (but I wouldn't be surprised either way...)
My question is, if its a straight through cable, would it connect to an unmanaged switch but not a managed one? And, would running a crossover cable fix my problem?