Most of the time, these error messages are due to an internal software bug in the Cisco IOS Software.
The first step to troubleshoot this sort of error message is to look for a known bug. You can use the Bug Toolkit ( registered customers only) to find a bug that matches the error. In the Bug Toolkit page, click Launch Bug Toolkit, and select Search for Cisco IOS-related bugs. In order to narrow your search, you can select your Cisco IOS software version under number 1. Under number 3, you can perform a keyword search for "CPUHOG, " where process is the corresponding process, such as Virtual Exec or IP Input.
You can upgrade to the latest Cisco IOS Software image in your release train to eliminate all fixed CPUHOG bugs.
In this case, the most of issue came from over usage CPU on AAA ACCT.
Actually, we have a Three PDSN(7206 VXR) and they are using different IOS version.
This problem came from IOS version 12.3(14)YX4 and 12.3(11)YF4 but PDSN#3 did not display this error message even though PDSN#3 also is using IOS version 12.3(11)YF4.
Mr.Giuslar, I also tried to find suitable IOS version in your site but I could not find it. I knew that you already mentioned to me how to find fixed IOS but when I searched bug error message your web site did not have anything.
If you can recommend for solve this problem, Please let me know which IOS version is suitable to our PDSN systems.
And then I also attached PDSN#2's tech-support file because PDSN#2 also has at the same problem such as PDSN#1.
also the second router was reloaded by the watchdog process.
I think it is wise to open a service request to get info about what IOS code to use for upgrade directly from TAC.
I wasn't able to find an exact match for your issue but there are several bugs that contain CPUhog on their description.
If you have one router that doesn't experience the problem even if it has the same IOS image you should investigate what are the differences in configuration or in usage level between the two devices you could find a workaround from any config difference or an indication that the problem is triggered by the volume of connections served
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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