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Problem with Cisco 3660 Router

ccotech00
Level 1
Level 1

Can anyone please tell me what possible cause can be ,the router runs fine for a Time ,and then it will start doing memory dumps and reloading ,when it comes back up it boots into ROMMON mode. Attached is a text file of the memory dumps and error messages displayed.

4 Replies 4

Hello,

your text file shows bus errors and a software-forced crash. Reasons for that can vary, below you find a few links explaining the various possible causes.

I guess the first thing you could do is to reinstall the IOS and see if that solves the problem. The IOS might have become corrupted. Also, check for any misseated hardware, you could reseat all the network modules.

Troubleshooting Router Crashes

http://www.cisco.com/en/US/products/hw/iad/ps397/products_tech_note09186a00800b4447.shtml

Troubleshooting Bus Error Crashes

http://www.cisco.com/en/US/products/sw/iosswrel/ps1831/products_tech_note09186a00800cdd51.shtml

Understanding Software-forced Crashes

http://www.cisco.com/warp/public/122/crashes_swforced_troubleshoot.html

Regards,

GP

Hi thanks for the links ,hi have reseated all hardware modules and memory modules ,i have aslo updated IOS ,no change though. Could the router motherboard be faulty ?

Hello,

can you try and boot from flash (that is, load an IOS to a Flash card and boot from there) ? When you do a 'dir flash' from the ROMMON prompt, is there a valid image ?

Regards,

GP

Yes ,there is a valid image ,it boots up fine and runs fine sometimes for up to 2 days ,and then crashes. I`ve also done a sh tech-support and dumped it into the cisco output interpreter ,but it found no problems.