Cisco Systems 1700 appendix Configuration Register, You will see output similar to the following

Appendix B ROM Monitor

Configuration Register

Note The -rvariable is optional. Entering this variable downloads and boots the new software but does not save the software to Flash. You can then use the image that is in Flash the next time you enter the reload command in the Cisco IOS software CLI.

You will see output similar to the following:

IP_ADDRESS: 10.0.0.1

IP_SUBNET_MASK: 255.255.0.0

DEFAULT_GATEWAY: 1.3.0.1

TFTP_SERVER: 223.255.254.254

TFTP_FILE: c1700-bnr2sy-mz.070298

Invoke this command for disaster recovery only.

WARNING: all existing data in all partitions on flash will be lost!

Do you wish to continue? y/n: [n]:

Step 3 If you are sure that you want to continue, enter y in response to the question in the output:

Do you wish to continue? y/n: [n]:y

The router will begin to download the new file.

Pressing Ctrl-C or Break stops the transfer before the Flash memory is erased.

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. For example:

confreg [hexnum]

	Cisco 1700 Series Router Software Configuration Guide
B-8	78-5407-03