question regarding crash

SPYME.GOOGLE · ‎02-20-2007

hi

how do we capture crashinfo file from rommon mode. how do we capture stack traces from this rommom mode.

purohit_810 · ‎02-20-2007

Can you tell me is it Router OR Switch?

Which model?

Dharmesh Purohit

SPYME.GOOGLE · ‎02-20-2007

hi

this for a 3600 router. i want to know in general how to collect crashinfo file from rommom mode on any type of platform

vaisharm · ‎02-21-2007

There's no way any file can be copied from ROMMON mode. You can only view the contents of the flash from ROMMON mode (using 'dir flash:'). However, if the router was not 'manually' power cycled after the crash, you may obtain a stack trace from ROMMON which can be decoded to obtain more information about the crash. The commands that can be used are:

ROMMON1>sysret

or

ROMMON1>stack 50 or 'k 50'

Obtain a Stack Trace from ROM Monitor

http://www.cisco.com/warp/public/63/why_hang.html#ktrace

Note: The stack trace collected this way may not always be very useful in diagnosing a crash.

Alternately, if the crashinfo is stored on a PCMCIA flash card, you may take it out and use it on a similar router or on a laptop with PCMCIA dlash card reader.

-Vaibhav