Rom Monitor Commands - Cisco 2691 - VPN Bundle Router Hardware Installation Manual

ROM Monitor Commands

The two methods of entering the ROM monitor mode are as follows:
Enter ROM Monitor Mode by Using the reload Command
Connect to the router from a console, and follow these steps:
Step 1
Restart the router with the reload command.
Router# reload
Step 2
Press the Break key during the first 60 seconds of the system booting.
This forces the router into ROM monitor mode, and the ROM monitor prompt is displayed:
Enter ROM Monitor Mode by Resetting the Configuration Register
Connect to the router from a console, and follow these steps:
Step 1
Set the bits 3, 2, 1, and 0 of the configuration register to zero:
Router# configuration-register 0x0
Step 2
Restart the router with the reload command:
The router boots into the ROM monitor mode, and the ROM monitor prompt is displayed:
rommon 1>
Note
The number that appears in the ROM monitor prompt (1>, 2>, and so forth) is the line number. It
increments each time you enter a ROM monitor command.
ROM Monitor Commands
Showing ROM Monitor Commands
Enter ? or help at the ROM monitor prompt to see a list of available commands. For example:
rommon 1>
alias
boot
break
confreg
cont
context
cookie
dev
Cisco 2600 Series Routers Hardware Installation Guide
B-2
As long as the configuration register value remains 0x0, you must manually boot the operating
system from the console. Refer to the boot command in the
section on page B-4.
rommon 1>
?
set and display aliases command
boot up an external process
set/show/clear the breakpoint
configuration register utility
continue executing a downloaded image
display the context of a loaded image
display contents of cookie PROM in hex
list the device table
Appendix B Using the ROM Monitor
"ROM Monitor Command Descriptions"
OL-2171-06