AIS Router AI2524 - Manual (Page 31)

Chapter 3: Configuration Overview
August 1997 Page 3-1
2524UM
Chapter 3: Configuration Overview
Introduction This chapter provides a brief overview of three ways that the AI2524
can be configured including:
z Configuration Mode
z AutoInstall
z System Configuration Dialog
These three and other procedures are described in detail in this manual.
The first time the router is powered and booted, you must enter basic
configuration information and save the configuration to a file in
NVRAM.
Boot Router for
First Time
Each time you power on the router, it goes through the boot sequence:
1. The router goes through power-on self-test diagnostics to verify
basic operation of the CPU, memory, and interfaces.
2. The system bootstrap software (boot image) executes and searches
for a valid Cisco IOS image (router operating system software).
The source of the Cisco IOS image (Flash memory or a Trivial File
Transfer Protocol [TFTP] server) is determined by the configura-
tion register setting. The factory-default setting for the configura
tion register is 0x2102, which indicates that the router should
attempt to load a Cisco IOS image from Flash memory.
3. If after five attempts a valid Cisco IOS image is not found in Flash
memory, the router reverts to boot ROM mode (which is used to
install or upgrade a Cisco IOS image).
4. If a valid Cisco IOS image is found, then the router searches for a
valid configuration file.