
A-3
Cisco Catalyst 4000 Access Gateway Module Installation and Configuration Note
OL-3008-01
Appendix A Identifying Hardware Problems with the ROM Monitor
ROM Monitor Commands
ROM Monitor Commands
This section describes the ROM monitor syntax conventions and the most commonly used commands.
To display a complete list, enter ? or help at the ROMMON prompt, as follows:
rommon 1 > ?
Note You can terminate any command by pressing the Break key at the console.
ROM Monitor Syntax Conventions
The ROM monitor commands use the following conventions:
Command Descriptions
This section describes some of the more commonly used ROM monitor commands:
• General Use Commands, page A-3
• Debugging Commands, page A-6
• Cookie Commands, page A-7
• Configuration Register Command, page A-10
• Modifying the Configuration Register from the Operating System Software, page A-11
• Boot and System Image Recovery Commands, page A-11
For more information, refer to the Cisco IOS configuration guides and command references.
General Use Commands
This section lists the ROM monitor general-use commands.
boot or b
Enter the boot or b command to boot the Cisco IOS software image from either Flash memory, TFTP,
or boothelper.
The following usage guidelines apply to the boot command:
• b boots the first image (if multiple images exist) in Flash memory.
• b flash:[name] boots the named Cisco IOS software from the Flash memory.
• b filename tftpserver boots the named Cisco IOS software from the specified TFTP server.
Convention Purpose
[ ] Square brackets [ ] denote an optional element.
-s: If a minus option is followed by a colon (for example,
[-s:]), you must provide an argument for the option.
italics A term in italics means that you must fill in the
appropriate information.
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