5-4
Hardware Installation Guide for the Cisco 4000 Series Integrated Services Router
OL-32185-02
Chapter 5 ROM Monitor Overview and Basic Procedures
Access ROM Monitor Mode
Router# show romvar
ROMMON variables:
PS1 = rommon ! >
TFTP_FILE = /noash/overlord_627.bin
DEFAULT_GATEWAY = 50.0.0.1
TFTP_SERVER = 172.18.40.12
IP_SUBNET_MASK = 255.255.255.0
MCP_STARTUP_TRACEFLAGS = 00000000:00000000
RET_2_RTS =
? = 0
LICENSE_BOOT_LEVEL = adventerprise,all:esg;
IP_ADDRESS = 172.18.40.56
BSI = 0
RET_2_RCALTS =
RANDOM_NUM = 1707176976
Router# reload
rommon 1 > set
PS1=rommon ! >
SR_INIT_SHELL=aux_do_system_shell
TFTP_FILE=/noash/overlord_627.bin
DEFAULT_GATEWAY=50.0.0.1
TFTP_SERVER=172.18.40.12
IP_SUBNET_MASK=255.255.255.0
MCP_STARTUP_TRACEFLAGS=00000000:00000000
RET_2_RTS=
?=0
LICENSE_BOOT_LEVEL=adventerprise,all:esg;
IP_ADDRESS=172.18.40.56
BSI=0
RANDOM_NUM=1707176976
RET_2_RCALTS=1350127173
Commonly Used ROM Monitor Commands
Table 5-1 summarizes 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 –o config-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.
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