User guide

Internetworking Primer A-7
Cisco Internetwork Operating System
section “Using the Enable Secret and the Enable Password,” in the chapter “Configuring the
Cisco 2500 Series Access Server”). Enter ? to display the privileged commands.Privileged
commands include the following:
• configure—Changes the access server’s software configuration.
• debug—Displays process and hardware event messages. Use caution with the debug
command because the additional load of generating debug message can overload the
CPU.
• setup—Enter configuration information at the prompts.
Enter the command disable to exit from the privileged EXEC mode and return to user
EXEC mode.
Configuration Mode
You use configuration mode to configure the access server. You can use configuration mode
for initial setup of the system (using the subcommand setup), as well as to change settings
after initial setup, either permanently or temporarily.
Configuration mode has a set of submodes that you use for modifying interface settings,
routing protocol settings (such as Interior Gateway Routing Protocol (IGRP), or Open
Shortest Path First (OSPF)), line settings, and so forth. Use caution with configuration
mode because all changes you enter take effect immediately.
Enter the command configure terminal to enter configuration mode and exit by pressing
Ctrl–Z. The following is a sample configuration session:
Router#conf terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname RouterA
RouterA(config)#interface e 0
RouterA(config-if)#description Floor 2 LAN
RouterA(config-if)#^Z
RouterA#