Re: Fortigate 200E (hardware switch)
The brightest idea would have been to ask before purchasing. What does your FTNT partner do for you? Did you search on the forums for "200E" and "switch"?
The second brightest idea is to create a software switch. The 200E does not have the hardware chip for switching (ISF). You can do by emulating a switch in software, run on the CPU, but this will increase the CPU load, from somewhat to substantially.
Next idea would be to use a different subnet for WiFi clients and route it, thus avoiding the switch altogether.
Last idea is to ditch the old AP and go for a FortiAP, with the WiFi controller included for free and fully integrated into FOS. This doesn't even touch the switch problem you are having but it's a good idea anyway.
Ede " Kernel panic: Aiee, killing interrupt handler!"