2-3
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
If you did not change the contents of the software configuration register, the factory default setting of
0x0102 in the software configuration register causes the system to boot from the Cisco IOS software
image on a Flash memory card or Flash disk inserted in PCMCIA slot 0 the next time you boot the router.
Configuring the Router
You can perform a basic configuration for your router by using either of the following methods:
• Setup facility or the setup command.
This method provides an interactive script to guide you through the configuration process. It is
described in the “Configuring the Router Using the Setup Command” section on page 2-3.
• Global configuration mode through the Cisco IOS command line user interface.
This method requires you to enter configuration commands on a line-by-line basis at the console,
without being prompted by a configuration script. It is described in the “Using Global Configuration
Mode” section on page 2-4.
You can use whichever method suits your operating style and your knowledge of network configuration
requirements.
Whether you choose to use the setup command facility or the global configuration mode to configure
the router to operate in your networking environment, be sure you know the following before starting
the configuration procedure:
• Interfaces on the router
• Protocols the router is routing
• Network addressing scheme for the router
• Password scheme for your environment
Note Before you can configure the router, a console terminal should be connected to the console port on the
faceplate of the RP. For more information on router installation and boot procedure, refer to your
installation and configuration guide.
Configuring the Router Using the Setup Command
One method of configuring the router is to use the setup command, also known as the setup command
facility. During the first startup of an unconfigured router, the system automatically starts the setup
command facility, which enables you to begin configuring your router. The setup command facility
presents a structured, interactive script that guides you through the configuration process with prompts
for global (system-wide) parameters and interface (line card) parameters.
Rommon 3> boot disk1:
filename
Boots the router using the specified file on the Flash memory disk in slot 1 of
the RP.
Rommon 3> boot bootflash:
filename
Boots the router using the specified file on the SIMM (bootflash) on the RP.
Rommon 3> boot tftp:
filename
[
host
]
Boots the router using the specified file on a host TFTP server in the network.
Command Purpose
