Cisco Systems 1700 appendix Command Router Prompt Task

Page 2

Appendix B ROM Monitor

Entering the ROM Monitor

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Follow these steps to configure the router to boot up in ROM monitor mode the next time it is rebooted.

Command

Router Prompt

Task

 

 

 

enable

Router>

If there is an enable password configured, enter

 

 

the enable command and the enable password to

 

 

enter privileged EXEC mode.

 

 

 

configure terminal

Router#

Enter global configuration mode.

 

 

 

config-reg 0x0

Router(config)#

Reset the configuration register.

 

 

 

exit

Router(config)#

Exit global configuration mode.

 

 

 

reload

Router#

Reboot the router with the new configuration

 

 

register value. The router remains in ROM

 

 

monitor and does not boot the Cisco IOS

 

 

software.

 

 

As long as the configuration value is 0x0, you

 

 

must manually boot the operating system from

 

 

the console. See the boot command in the

 

 

“Command Descriptions” section on page B-4 .

 

 

 

 

rommon 1>

After the router reboots, it is in ROM monitor

 

 

mode. The number in the prompt increments

 

 

with each new line.

 

 

 

Timesaver A break (system interrupt) is always enabled for 60 seconds after the router reboots, regardless of its setting (on or off) in the configuration register. During this 60-second window, you can break to the ROM monitor prompt by pressing the Break key.

 

Cisco 1700 Series Router Software Configuration Guide

B-2

78-5407-03

Image 2 Contents
ROM Monitor Entering the ROM MonitorCommand Router Prompt Task ROM Monitor Commands Reset or Command DescriptionsCommand Description Help or ?Flash filename Disaster Recovery with Tftp DownloadTftp Download Command Variables Flash2 filenameVariable Command TFTPVERBOSE= setting Using the Tftp Download CommandTFTPTIMEOUT= time Configuration Register You will see output similar to the followingEnable Diagnostic mode? y/n n Argument Description Command DescriptionConsole Download Error Reporting DestinationfilenameDebug Commands Context-Display processor context. For exampleRommon 8 sysret System Return Info Appendix B ROM Monitor Debug Commands
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