Chapter 5: Router Startup and Setup Labs:
5.2.3 | In this lab you will use the command setup to enter setup mode. Setup is a Cisco IOS utility (or program) that can help get some of the basic router configuration parameters established. Setup is not intended as the mode for entering complex protocol features in the router. Rather the purpose of setup mode is to bring up a minimal configuration for any router that cannot find its configuration from some other source.
5.3.1 | When you first open up a router and the operating system is loaded, you have to go through the process of initial setup. In this scenario, you have just received a shipment of new routers and you need to setup a basic configuration. You have received a class B IP network address of 156.1.0.0, and you will need to subnet your class B address using 5 bits for you subnets. Use the standard 5-router diagram above to determine which subnetwork numbers and which IP addresses you will use for the 8 network you will need to define. For this lab, setup all five routers. Be sure to configure the router you are using with a console port.