Cisco Systems Cisco 12008 manual Ciscobootfieldvalue-processorname

Performing Other Configuration Tasks

•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.

If you set the boot field to any bit pattern other than 0 or 1, the router uses the software configuration register settings to compute a filename from which to boot a default system image stored on a network TFTP server.

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>

This format, for example, would yield the following range of typical filenames:

cisco2-grp

.

.

.

cisco17-grp

or

cisco2-prp

.

.

.

cisco17-prp

The system would use a filename in this range from which to boot a default system image stored on a network TFTP server.

However, if the configuration file contains boot instructions, the system uses these instructions to boot the system, rather than using the filename it computed from the software configuration register settings.

Observing System Startup and Performing a Basic Configuration 4-37