4-5
Cisco 12404 Internet Router Installation and Configuration Guide
OL-11636-01
Chapter 4 Troubleshooting the Installation
Performing Other Configuration Tasks
If you enter the
boot
command
with
arguments (that is, by instructing the
system to boot from a specific source), the following options are available to
you:
–
You can instruct the system to boot from a specific Flash SIMM image
(by entering the
boot bootflash:
filename
command) or you can instruct
the system to boot from a specific image stored on a PCMCIA Flash
memory card (by entering the
boot slot #:
imagename
command).
–
You can instruct the system to boot from a network TFTP server either
by sending broadcast TFTP requests (by entering a
boot
filename
command), or by sending a direct request to a specific network TFTP
server (by issuing a
boot
filename
ip-address
command).
•
When the boot field is set to 1, the system automatically boots using the first
image found in the onboard Flash SIMM on the RP.
•
When the boot field is set to a bit pattern other than 0 or 1, the router uses the
software configuration register settings to compute the filename of a default
system image stored on a network TFTP server. It then uses that system image
to boot the router. If the configuration file contains boot instructions,
however, the system uses these instructions to boot the system, rather than
using the filename it computed from the software configuration register
settings.
To form this filename, the system starts with
cisco
and links the octal
equivalent of the boot field value and the processor type in the following
format:
cisco<
bootfieldvalue
>-<
processorname
>
For example, the filename formation process would yield a range of typical
filenames like the following:
cisco2-grp
.
.
.
cisco17-grp
todd.book Page 5 Tuesday, November 27, 2007 6:02 PM
