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5-6
Hardware Installation Guide for the Cisco 4451-X Integrated Services Router
Chapter 5 ROM Monitor Overview and Basic Procedures
Environment Variable Settings
Under normal operating conditions, you do not need to modify these variables. They are cleared or set
only when you need to make changes to the way ROM Monitor operates.
This section includes the following topics:
• Frequently Used Environmental Variables, page 5-6
• Displaying Environment Variable Settings, page 5-6
• Entering Environment Variable Settings, page 5-7
• Saving Environment Variable Settings, page 5-7
Frequently Used Environmental Variables
Table 5-3 shows the main ROM Monitor environmental variables. For instructions on how to use these
variables, see the relevant instructions in this document.
Displaying Environment Variable Settings
To display the current environment variable settings, enter the set command :
rommon 1 > showmon -v
Current image running (0/1): Boot ROM0
System Bootstrap, Version 12.2(20120829:165313) [jhayduk-ESGROM_20120829_DELTA 101],
DEVELOPMENT SOFTWARE
Copyright (c) 1994-2012 by cisco Systems, Inc.
Compiled Wed 08/29/2012 12:53:32.67 by jhayduk
CPLD Version : 35 (MM/DD/YY): 09/03/12 (2.3)
FPGA Version : 0x82020300 (2.3.0)
FPGA Active : read-only image
Board Version : 2 (P1C)
PCH Version : 10 (B0)
DP CPU Version : 00 (1.0)
FPGA-ENV Version: 0105
Table 5-3 Frequently Used ROM Monitor Environmental Variables
Environmental variable Description
IP_ADDRESS=ip_address Sets the IP address for the Management Ethernet
interface.
IP_SUBNET_MASK=ip_address Sets the subnet mask for the Management
Ethernet interface.
DEFAULT_GATEWAY=ip_address Sets the default gateway that serves.
TFTP_SERVER=ip_address Sets the IP address of the TFTP server where a
bootable software image is located.
TFTP_FILE=path/file Sets the directory and filename of a bootable
software image.
BOOT=path/file Identifies the boot software for a node. This
variable is usually set automatically when the
router boots.