Good morning,
I have been running into an intermittent issue with our remote sites and the AP's locking up from high CPU utilization and I was hoping for some advice. This issue is slowly creeping across our network and only hitting one or two sites at a time. We are running one or two RAP-109s at each site with each site having its own virtual controller. The RAPs are managed via Airwave.
The issue begins with one of the APs reporting as "Down" in Airwave and the event log reporting "AP is not associated to Virtual Controller". Troubleshooting reveals that the AP(s) are running at 100% CPU utilization with the "top" and "mini_httpd" processes consuming most of the resources. Running commands such as "show tech-support" and similar result in “Module AM is busy. Please try later.” Client IP addresses are 0.0.0.0 and noise level on the AP is listed as high.
This is what doesn't make sense to me. After 30-45 minutes, the CPU utilization will normalize, both APs will join the virtual controller, and clients will connect and pass traffic. Powercycling the APs does not immediately correct the issue as it appears they boot back up to 100% CPU until this "process" completes.
Here are the software versions I am running:
IAPs: 6.4.2.6-4.1.3.1_55246
Airwave: 8.0.11.2
Any help is greatly appreciated :)