Cisco Systems ISR4451XK9 manual Commonly Used ROM Monitor Commands, Examples

Chapter 5 ROM Monitor Overview and Basic Procedures

Entering ROM Monitor Mode

Commonly Used ROM Monitor Commands

Table 5-1summarizes the commands commonly used in ROM Monitor. For specific instructions on using these commands, refer to the relevant procedure in this document.

Table 5-1	Commonly Used ROM Monitor Commands
ROMMON Command		Description
boot image		Manually boots a Cisco IOS XE software image.
boot image –oconfig-file-path		Manually boots the Cisco IOS XE software with a temporary
		alternative administration configuration file.
confreg		Changes the config-register setting.
dev		Displays the available local storage devices.
dir		Displays the files on a storage device.
reset		Resets the node.
set		Displays the currently set ROM Monitor environmental
		settings.
sync		Saves the new ROM Monitor environmental settings.
unset		Removes an environmental variable setting.

Displaying the Available ROM Monitor Commands

Table 5-2describes the available help commands for ROM Monitor mode.

Table 5-2	Help Commands in ROMMON
Command		Description
help or ?		Displays a summary of all available ROM Monitor commands.
-?		Displays information about command syntax.

Note Commands are case-sensitive. You can halt any command by pressing Ctrl-C.

Examples

The following example shows what appears when you enter the ? command on a Cisco ISR 4451-X:

rommon 1 > ?
alias	set and	display aliases command
boot	boot up	an external	process
break	set/show/clear the breakpoint
confreg	configuration register utility
context	display	the context	of a loaded image
cookie	display	contents of	cookie PROM in hex
dev	list the device table
dir	list files in file system
dis	display	instruction	stream
frame	print out a selected stack frame

Hardware Installation Guide for the Cisco 4451-X Integrated Services Router

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