Configuration Register - Cisco 1710 Software Configuration Manual

Appendix A ROM Monitor

Configuration Register

78-12696-01
The virtual configuration register is in NVRAM and has the same functionality as
other Cisco routers. You can view or modify the virtual configuration register
from either the ROM monitor or the operating system software.
To change the virtual configuration register from the ROM monitor, enter confreg
by itself for menu mode, or enter the new value of the register in hexadecimal.
confreg [hexnum]—Change the virtual configuration register to the value
specified. The value is always interpreted as hexadecimal. Entering confreg
without an argument displays the contents of the virtual configuration register and
a prompt to alter the contents by describing the meaning of each bit.
In either case, the new virtual configuration register value is written into
NVRAM, but does not take effect until you reset or power-cycle the router.
The following display shows an example of menu mode:
rommon 7> confreg
Configuration Summary
enabled are:
console baud: 9600
boot: the ROM Monitor
do you wish to change the configuration? y/n
enable "diagnostic mode"? y/n
enable "use net in IP bcast address"? y/n
enable "load rom after netboot fails"? y/n
enable "use all zero broadcast"? y/n
enable "break/abort has effect"? y/n
enable "ignore system config info"? y/n
change console baud rate? y/n
enter rate: 0 = 9600, 1 = 4800, 2 = 1200, 3 = 2400
4 = 19200, 5 = 38400, 6 = 57600, 7 = 115200
change the boot characteristics? y/n
enter to boot:
0 = ROM Monitor
1 = the boot helper image
2-15 = boot system
[0]: 0
Configuration Summary
enabled are:
diagnostic mode
console baud: 9600
[n]: y
[n]:
[n]:
[n]: y
[n]:
Cisco 1710 Security Router Software Configuration Guide
Configuration Register
[n]: y
[n]:
[n]:
[n]:
[0]: 0
y
A-9