A router crash is when the router detects an unrecoverable error and restarts itself.
A crash can be caused by software problems, hardware problems, or both.
When you deal with hardware-caused crashes and software-related crashes, they 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:
Step 1. Find out the type of crash by issuing a show version command.
Step 2. 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.
For more information regarding crashes, refer to:
Troubleshooting Router Crashes
For more information regarding hardware troubleshooting, refer to:
Hardware Troubleshooting for the Cisco 2600 Series Router
Hope this helps.
Brad Reese BradReese.Com - Cisco Repair
Hendersonville Road, Suite 17 Asheville, North Carolina USA 28803 USA & Canada: 877-549-2680 International: 828-277-7272 Fax: 775-254-3558 AIM: R2MGrant BradReese.Com - Cisco Power Supply Headquarters