All of the devices used in this document started with a cleared (default) configuration. The information in this document was created from the devices in a specific lab environment. This document is not restricted to specific software and hardware versions.
There are no specific requirements for this document. The ROM monitor identifies the error, prints a message, saves information about the failure, and restarts the system. A 'system crash' is a situation where the system has detected an unrecoverable error and has restarted itself. The errors that cause crashes are typically detected by processor hardware, which automatically branches to special error handling code in the ROM monitor. This document describes how to troubleshoot router crashes.