Cisco RSP2 - Route Switch Processor 2 Installation And Configuration Manual page 83

Bit 13 determines the server response to a bootload failure. Setting bit 13 causes the server to load
operating software from Flash memory after five unsuccessful attempts to load a boot file from the
network. Clearing bit 13 causes the server to continue attempting to load a boot file from the network
indefinitely. By factory default, bit 13 is cleared to 0.
Enabling Booting from Flash Memory
To enable booting from Flash memory, set configuration register bits 3, 2, 1, and 0 to a value between 2
and 15 in conjunction with the boot system flash device:filename configuration command, where device
is bootflash:, slot0:, or slot1:, and filename is the name of the file from which you want to boot the
system.
To enter configuration mode while in the system software image and specify a Flash memory filename
from which to boot, enter the configure terminal command at the enable prompt, as follows:
Router# configure terminal
Enter configuration commands, one per line.
Router(config)# boot system flash device : filename
To disable the Break function and enable the boot system flash device:filename command, enter the
config-register command with the value shown in the following example:
Router(config)# config-reg 0x0102
Router(config)# Ctrl-Z
Router#
Recovering a Lost Password
An overview of recovering a lost password follows:
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A key to recovering a lost password is to set the configuration register so that the contents of NVRAM
Note
are ignored (0x0040), allowing you to see your password.
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Note If the enable password is encrypted, the following procedure does not work for password recovery and
you must reconfigure the router using the displayed configuration (shown in Step 11), instead of being
rebooted.
To recover a lost password, follow these steps:
Step 1 Attach an ASCII terminal to the router console port, which is located on the rear panel.
OL-4923-01 B0
Enter the show version command to note the existing software configuration register value.
Break to the bootstrap program prompt.
Change the configuration register to ignore NVRAM.
Enter privileged level in the system EXEC.
Enter the show startup-configuration command to display the enable password.
Change the configuration register value back to its original setting.
End with CNTL/Z.
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