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Cisco 1710 Security Router Software Configuration Guide

78-12696-01

Appendix A ROM Monitor

Configuration Register

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 [n]: y

enable “diagnostic mode”? y/n [n]: y

enable “use net in IP bcast address”? y/n [n]:

enable “load rom after netboot fails”? y/n [n]:

enable “use all zero broadcast”? y/n [n]:

enable “break/abort has effect”? y/n [n]:

enable “ignore system config info”? y/n [n]:

change console baud rate? y/n [n]: y

enter rate: 0 = 9600, 1 = 4800, 2 = 1200, 3 = 2400

4 = 19200, 5 = 38400, 6 = 57600, 7 = 115200 [0]: 0

change the boot characteristics? y/n [n]: y

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

1 2 ... 72 73 74 75 76 77 78 79 80 81 82 ... 87 88

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