A basic router configuration includes the hostname for identification, passwords for security, assignment of IP addresses to interfaces for connectivity, and basic routing. Figure 1 shows the commands entered to enable a router with OSPF. Verify and save configuration changes using the copy running-config startup-config command. Figure 2 shows the results of the configuration commands that were entered in Figure 1. To clear the router configuration, use the erase startup-config command and then the reload command.
On Figure 3, use the Syntax Checker to verify router configurations using these show commands.