Cisco Systems 2600 manual Debugging Commands, Other Useful ROM Monitor Commands

Appendix B Using the ROM Monitor

ROM Monitor Command Descriptions

meminfo [-l]—The meminfo command with the -loption shows supported DRAM configurations. The following example shows an example of the meminfo -lcommand:

rommon 10> meminfo -l

Supported memory configurations:

DIMM 0	DIMM 1
-------------------
	4M
	8M-DUAL
	16M
	32M-DUAL
4M
4M	4M
4M	8M-DUAL
4M	16M
4M	32M-DUAL
8M-DUAL
8M-DUAL	4M
8M-DUAL	8M-DUAL
8M-DUAL	16M
8M-DUAL	32M-DUAL
16M
16M	4M
16M	8M-DUAL
16M	16M
16M	32M-DUAL
32M-DUAL
32M-DUAL	4M
32M-DUAL	8M-DUAL
32M-DUAL	16M
32M-DUAL	32M-DUAL

Other Useful ROM Monitor Commands

reset or i—Resets and initializes the router, similar to power on.

tftpdnld—(Except Cisco 2691) Downloads an image using TFTP from a remote server. See the “Copying an Image from a TFTP Server Using the tftpdnld Command” procedure on page B-10.

Debugging Commands

Most debugging commands are functional only when Cisco IOS software has crashed or failed to initialize (boot). Debugging commands should normally be entered only under the direction of a Cisco engineer. If you enter a debugging command and Cisco IOS crash information is not available, the following error message appears:

“xxx: kernel context state is invalid, cannot proceed.”

The following ROM monitor debugging commands provide information about software failures:

•stack or k—Produces a stack trace.

•context—Views processor context.

•frame—Views an individual stack frame.

Cisco 2600 Series Routers Hardware Installation Guide

B-6 OL-2171-06