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Elektronik Bilgi Kütüphanesi



2-4
Cisco 12000 Series Internet Router Configuration Guide for Cisco IOS Release 12.0S
Chapter 2 Basic Configuration of the Cisco 12000 Series Internet Router
Configuring the Router
You can also invoke the setup command facility at any time by issuing the setup command at the
privileged EXEC mode prompt (Router#), which invokes the same configuration script that appears
automatically during the first startup of an unconfigured router. You can use the setup command to alter
previously entered configuration information or to enter a new configuration. The advantage of using the
setup command facility is that the system uses an interactive script to guide you through the
configuration process.
If you use the setup command facility to alter the router configuration, you must allow the entire setup
command facility script to run, until you come to the item that you want to change. To accept default
settings for items that you do not want to change, press the console keyboard Return key. To return to
the privileged EXEC prompt without making changes, press Ctrl-C. To access help text in the setup
command facility, press the question mark key (?) at any prompt.
When you complete your changes, the setup command facility displays the configuration command
script that was created as a result of the changes you entered during the setup session. It also queries if
you want to use this configuration. If you answer Yes, the configuration is saved to NVRAM. If you
answer No, the configuration is not saved and the process begins again. There is no default for this
prompt; you must answer either Yes or No.
Following is an example of the initial output from the setup command facility session:
--- System Configuration Dialog ---
Continue with configuration dialog? [yes/no]: Yes
At any point you may enter a question mark '?' for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets '[]'.
Basic setup only configures enough connectivity
for management of the system, extended setup will ask you
to configure each interface of the system.
Note The only observable difference between the configuration script displayed when the setup
command facility starts automatically on startup, and the script displayed when you
manually enter the setup command, is that when you enter the command manually, the
script displays any previously entered system configuration defaults within square brackets
([ ]).
Using Global Configuration Mode
If you prefer not to use the interactive script of the setup facility, you can manually configure your router
using global configuration mode. Global configuration mode enables you to enter configuration
commands line by line from the console terminal.
Before you can configure your router using the global configuration mode, you will need to be familiar
with the Cisco IOS software command line interface. If you are unfamiliar with the Cisco IOS command
line interface, you should read the “Using the Command Line Interface” chapter in the Configuration
Fundamentals Configuration Guide. That chapter discusses the different command modes,
context-sensitive help, and editing features.
To configure your router using global configuration mode, follow these steps: