Setting up authentication is a four-step process. We will restrict this discussion to how routers are set up to do authentication. We will leave setting up switches and PIXes for authentication for the “Case Studies” section. Most other devices can be set up for authentication following similar principles.
The first step in using authentication on a device is to enable AAA. You do this using the following command on a router:
In this step, the username/devicename and password are either defined on the local router or defined on an AAA server accessible ...