The console port shouldn’t need any introduction. The CTY port is, of course, where … See more

While not all routers these days have an AUX port, the AUX port is the auxiliary. Think of it as a secondary console port. The AUX ports don’t get a lot of use except to access the … See more

To have a TTY line on your router, you must have an ASYNC card in your router. This card provides some number of asynchronous serial ports on the router, which you … See more

VTY ports are virtual TTY ports, used to Telnet or SSH into the router over the network. You can use them to connect to the router to make configuration changes or check the s… See more

While you could spend a lot of time learning all the configuration variations for lines on a Cisco router, here’s the simplest and most useful configuration for your router lines. I recommen… See more