System was restarted by bus error at PC 0x623A3CF8, address 0x23 at 10:43:44 UK Thu Nov 4 2010

[imediacast2010]

Hi

our router start restarting itself I believe its bug but I get the error below but did not find anything online for the fix

some people say you need to upgrade IOS

could you please help?

PRODUCT TYPE (Model Number): Cisco 2801 

* SOFTWARE VERSION:IOS Version:12.4(4)XC7

* BRIEF PROBLEM DESCRIPTION:

System was restarted by bus error at PC 0x623A3CF8, address 0x23 at 10:43:44 UK Thu Nov 4 2010

2801 Software (C2801-ADVENTERPRISEK9-M), Version 12.4(4)XC7, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Compiled Wed 01-Aug-07 00:56 by alnguyen

Image text-base: 0x6008C860, data-base: 0x63185140

Stack trace from system failure:

FP: 0x661A7C30, RA: 0x623A3CF8

FP: 0x661A7C70, RA: 0x623A415C

FP: 0x661A7C98, RA: 0x623A2BC8

FP: 0x661A7CB0, RA: 0x62375880

FP: 0x661A7D10, RA: 0x6237F4BC

FP: 0x661A7D28, RA: 0x61840694

FP: 0x661A7D80, RA: 0x61841ACC

FP: 0x661A7DA0, RA: 0x61841B88

[Peter Paluch]

Hello Ozhan,

A bus error generally means that the CPU tried to access a memory location that is not physically accessible. In most cases, this is a problem of the operating system. You are running the 12.4(4)XC7 version which is quite old and in furthermore, it is a special branch of IOS that was created only to implement and test a particular enhancement feature, and this feature was then reintegrated back into the 12.4 or 12.4T train at some time later.

I therefore strongly recommend to upgrade to the newest 12.4 or 12.4T IOS in a particular feature set that fits your memory and FLASH resources, and see whether the problem is resolved.

Best regards,

Peter

[imediacast2010]

Hi Peter

Thanks for quick reply

Do you have any instruction that I can follow to upgrade the IOS ?

regards

[Peter Paluch]

Hi Ozhan,

See the next thread you have created - I have answered this question there.

Best regards,

Peter

[Bert Gevers · Accepted solution]

Hello Ozhan,

this reload is caused by the following defect:

CSCsd70772 Externally found moderate (Sev3) bug: Resolved (R)

NBAR: bus error when translating UDP packet
Integrated in  12.4(06)T04 12.4(09)T01 12.4(09.02)T

You can view the details of this defect in our bug tool:
http://tools.cisco.com/Support/BugToolKit/action.do?hdnAction=searchBugs

Upgrading to any version later than the ones above will fix the issue.

Bert