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Appendix A ROM Monitor

Debug Commands

A-12

Cisco 1710 Security Router Software Configuration Guide

78-12696-01

Error Reporting

Because the ROM monitor console download uses the console to perform the data

transfer, error messages are displayed on the console only when the data transfer

is terminated.

If an error does occur during a data transfer, the transfer is terminated, and an

error message is displayed. If you have changed the baud rate from the default

rate, the error message is followed by a message telling you to restore the terminal

to the baud rate specified in the configuration register.

Debug Commands

Most ROM monitor debugging commands are functional only when Cisco IOS

software has crashed or is halted. If you enter a debugging command and Cisco

IOS crash information is not available, you see the following error message:

"xxx: kernel context state is invalid, can not proceed."

The following are ROM monitor debugging commands:

• stack or k—Produce a stack trace. For example:

rommon 6> stack

Stack trace:

PC = 0x801111b0

Frame 00: FP = 0x80005ea8 PC = 0x801111b0

Frame 01: FP = 0x80005eb4 PC = 0x80113694

Frame 02: FP = 0x80005f74 PC = 0x8010eb44

Frame 03: FP = 0x80005f9c PC = 0x80008118

Frame 04: FP = 0x80005fac PC = 0x80008064

Frame 05: FP = 0x80005fc4 PC = 0xfff03d70

• context—Display processor context. For example:

rommon 7> context

CPU context of the most recent exception:

PC = 0x801111b0 MSR = 0x00009032 CR = 0x53000035 LR =

0x80113694

CTR = 0x801065e4 XER = 0xa0006d36 DAR = 0xffffffff DSISR =

0xffffffff

DEC = 0xffffffff TBU = 0xffffffff TBL = 0xffffffff IMMR =

0xffffffff

R0 = 0x00000000 R1 = 0x80005ea8 R2 = 0xffffffff R3 =

0x00000000

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