
A-1
Cisco Catalyst 4000 Access Gateway Module Installation and Configuration Note
OL-3008-01
APPENDIX
A
Identifying Hardware Problems with the ROM
Monitor
This appendix describes how to use the ROM monitor bootstrap program to identify hardware problems
on the Cisco Catalyst 4000 Access Gateway Module (AGM) that you encounter during installation.
This appendix contains these major sections:
• Entering ROM Monitor Mode, page A-1
• Configuring for Autoboot, page A-2
• ROM Monitor Commands, page A-3
• Upgrading the ROM Monitor, page A-13
Entering ROM Monitor Mode
The ROM monitor runs when you power on or restart the AGM. During normal operation, the ROM
monitor helps to initialize the processor hardware and boot the operating system software.To use the
ROM monitor, your terminal or workstation must be connected to the console port of the switch. See the
“Connecting a Terminal to the Console and Ethernet Management Ports” section on page 2-25 for
information on making this connection.
To enter ROMMON mode, perform the following steps:
Step 1 Enter the enable command at the Gateway> prompt to enter privileged mode.
Step 2 Enter the reload command at the Gateway# prompt to restart the AGM.
Step 3 Press the Break key for 60 seconds while the system is starting up. Pressing this key forces the AGM to
stop booting and enter the ROMMON mode.
This example shows how to enter ROMMON mode:
Gateway>
Gateway> enable
Gateway# reload
System configuration has been modified. Save? [yes/no]:yes
Building configuration...
[OK]
Proceed with reload? [confirm]
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