Configuring a Terminal Server (2511)
Although a terminal server (2511) is an optional piece of equipment for the lab, it provides convenience and alleviates the frustration of swapping console cables. Yes, it is true that you can telnet from device to device. However, telnet requires IP, and you are constantly making changes in the scenarios to where you do not just automatically always have in-band (IP-based) management. The terminal server provides out-of-band management, which is totally separate from your IP configuration. Figure C-2 illustrates a 2511 (an example of a terminal server) and the octal cable connections from the asynchronous interface to the router/switch console ports.
Figure C-2. Terminal Server (2511)
A terminal server works ...