An important undertaking for every network team is documenting the existing network. As stressed throughout this book, accurate documentation is a must. Therefore, this section covers the CLI commands that enable you to build a network diagram.
Your network currently has no network diagram. You are connected to R1 via the console port, as shown in Figure 2-8. Your first task is to find out the types of interfaces that are up/up, and the IP addresses associated with them. To accomplish this, you issue the show ip interface brief command, as shown in Example 2-45.