A system crash is when the system detects an unrecoverable error and restarts itself. A crash can be caused by software problems, hardware problems, or both. This section deals with hardware-caused crashes and software-related crashes, but may be mistaken for hardware problems.
Note: Important information about the crash is lost if the router is reloaded after the crash, such as from the power-cycle or issuing the reload command. Collect the information found in the show tech-support and show log command output, as well as the crashinfo file before reloading the router.
To address a router crash, perform these steps:
Find out the type of crash by issuing a show version command.
Look for the reason the system restarted.
This sample output shows where to look for the reason the system restarted:
Router#show version Cisco Internetwork Operating System Software IOS (tm) RSP Software (RSP-PV-M), Version 12.0(10.6)ST, EARLY DEPLOYMENT MAINTENANCE INTERIM SOFTWARE Copyright (c) 1986-2000 by cisco Systems, Inc. Compiled Fri 23-Jun-00 16:02 by richv Image text-base: 0x60010908, data-base: 0x60D96000
ROM: System Bootstrap, Version 12.0(19990806:174725), DEVELOPMENT SOFTWARE BOOTFLASH: RSP Software (RSP-BOOT-M), Version 12.0(9)S, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)
Router uptime is 20 hours, 56 minutes System returned to ROM by error - a Software forced crash, PC 0x60287EE8 System image file is "slot0:rsp-pv-mz.120-10.6.ST" !--- The rest of the output has been omitted.
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