Cisco PRP-2 Installation And Configuration Manual page 75

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.
4. Enter privileged level in the system EXEC.
Use the show startup-config command to display the enable password.
5.
Change the configuration register value back to its original setting.
6.
To recover a lost password, follow these steps:
If the enable password is encrypted, the following password recovery procedure will not work and you
Note
will have to reconfigure the system; you will not be able to reboot it. To reconfigure the system, use the
displayed configuration, which is shown using the show startup-config EXEC command. (See
Attach an ASCII terminal to the PRP console port.
Step 1
Configure the terminal to operate at 9600 bps, 8 data bits, no parity, 2 stop bits (or to the settings at which
Step 2
the console port is set).
Enter the show version command to display the existing configuration register value. Note this value for
Step 3
later use.
Step 4 If Break is disabled, power cycle the router. (To power cycle, turn off power, wait 5 seconds, then turn
it on again.) If Break is enabled on the router, press the Break key or send a break by holding down the
Control key and pressing the right square bracket key (^]); then proceed to Step 5.
Within 5 seconds of turning on the router, press the Break key. This action causes the terminal to display
Step 5
the bootstrap program prompt as follows:
Rommon 1>
Set the configuration register to ignore the configuration file information as follows:
Step 6
Rommon 1> confreg
Configuration Summary
enabled are:
console baud: 9600
boot: image specified by the boot system command
or default to: cisco2-PRP
do you wish to change the configuration? y/n [n]: y
enable "diagnostic mode"? y/n [n]:
enable "use net in IP bcast address"? y/n [n]:
enable "load rom after netbootfails"? y/n [n]:
enable "use all zero broadcast"? y/n [n]:
enable "break/abort has effect?" y/n [n]:
enable "ignore system config info?" [n]: y
change console baud rate? y/n [n]:
change boot characteristics? y/n [n]
Configuration Summary
enabled are:
console baud: 9600
boot: image specified by the boot system command
or default to: cisco2-PRP
Do you wish to change the configuration? y/n [n]
OL-17436-01
Additional Configuration and Maintenance Tasks
Step 11.)
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