Cisco 4451-X User Manual

5-4
Hardware Installation Guide for the Cisco 4451-X Integrated Services Router
Chapter 5 ROM Monitor Overview and Basic Procedures
Entering ROM Monitor Mode
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.
Displaying the Available ROM Monitor Commands
Table 5-2 describes the available help commands for ROM Monitor mode.
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
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.
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.

Cisco 4451-X Specifications

General

Aggregate Throughput	2 Gbps
Total Onboard WAN or LAN 10/100/1000 Ports	4
RJ-45-based Ports	4
SFP-based Ports	4
Enhanced Service Module (SM-X) Slots	2
NIM (Network Interface Module) Slots	3
Onboard ISC Slot	1
Memory (DRAM) Default	4 GB
Memory (DRAM) Maximum	16 GB
Flash Memory	8 GB
Rack Height	2 RU
Product Type	Router
Form Factor	Rack-mountable
Connectivity Technology	Wired
Data Link Protocol	Ethernet, Fast Ethernet, Gigabit Ethernet
Product Series	Cisco 4000 Series
Model	4451-X
Network/Transport Protocol	IPsec
Remote Management Protocol	SNMP
Features	Firewall protection, VPN support, Quality of Service (QoS), IPv6 support
Interfaces	4 x 10/100/1000 Ethernet ports, 4 x SFP ports
Power	AC 100-240 V (50/60 Hz)
Memory	4 GB
Operating Temperature	0 to 40 °C
Storage Temperature	-40 to 70 °C
Humidity	5% to 95% non-condensing