6
Using the ROM Monitor
OL-5997-02
How to Use the ROM Monitor—Typical Tasks
Examples
This section provides the following example:
Sample Output for the reload Command
Use break key sequence to enter rom monitor
Router#
reload
Proceed with reload? [confirm]
*Sep 23 15:54:25.871: %SYS-5-RELOAD: Reload requested by console. Reload Reason: Reload
command.
telnet>
send break
*** System received an abort due to Break Key ***
signal= 0x3, code= 0x0, context= 0x431aaf40
PC = 0x4008b5dc, Cause = 0x20, Status Reg = 0x3400c102
rommon 1 >
Troubleshooting Tips
The Break key sequence varies, depending on the software on your PC or terminal. See the
Break Key Sequence Combinations During Password Recovery
tech note.
What to Do Next
•
“Displaying Commands and Command Syntax in ROM Monitor Mode (?, help, -?)”
.
•
If you use the Break key sequence to enter ROM monitor mode when the router would otherwise
have booted the system image, you can exit ROM monitor mode by doing one of the following:
–
Enter the
i
or
reset
command, which restarts the booting process and loads the system image.
–
Enter the
cont command
, which continues the booting process and loads the system image.
Setting the Configuration Register to Boot to ROM Monitor Mode
This section describes how to enter ROM monitor mode by setting the configuration register to boot to
ROM monitor mode at the next system reload or power-cycle.
Caution
Do not set the configuration register by using the
config-register
0x0
command after you have set the
baud rate. To set the configuration register without affecting the baud rate, use the the current
configuration register setting by entering the
show ver | inc configuration
command, and then replacing
the last (rightmost) number with a 0 in the configuration register command.