FortiAP devices are thin wireless access points (AP) supporting the latest Wi-Fi technologies (multi-user MIMO 802.11ac Wave 1 and Wave 2, 4x4), as well as 802.11n, 802.11AX , and the demand for plug and play deployment.
'top' command to understand the services and also which service takes more CPU at the time when the issue is seen.
4) Execute the below command on another putty session from the FortiAP CLI. Let it also run until the FortiAP reboots.
#cw_debug app cwWtpd 0x7fff #cw_debug on
Above command is for the WTP daemon logs to see if something happens with the WTP daemon itself.
5) Along with the above, FortiAP uplink port captures from the switch side is also required. This will help us to analyze whether any broadcast or any specific packets are seen at the time when the FortiAP goes for the reboot.