These simple, inexpensive Ethernet jack/plug combinations used for loopback testing and to convert a standard Ethernet cable to a crossover cable are a no-brainer. Every network person should have one ...

A connector used for diagnosing transmission problems. Also called a "wrap plug," it plugs into an Ethernet or serial port and crosses over the transmit line to the receive line so that outgoing ...

I am doing a review of the configuration of all our Cisco equipment after taking over from my predecessor. I noticed in one of the routers has a loopback interface on it but I can’t account for the ...

We are now going to examine how to access your computer's serial ports. In order to do this, we need some sort of serial device to talk to. A serial port loopback plug is probably the simplest. These ...