Ideally, you should use Figure 10-1 as a physical starting point, discover the network on your own, and update your drawing accordingly. To make this a true discovery lab, you should have someone else do the cabling and load the preconfigured files for you. They are in the file called tt1 layer 2 configuration. Alternatively, erase all the configurations yourself, power the devices down, and wire the new scenario as in Figure 10-2. Then you can paste in the configurations from the file provided (or configure, if you prefer).