Description
Solution
This article provides a solution for the issue where all access points show as offline on the FortiGate, but at the same time the access points are pingable from the FortiGate.

Solution
Enable 'capwap' on the interface where the access point is connected.
CLI:

By enabling this, it allows the FortiGate to discover the FortiAP's connected to the respective interface.
CLI:
config system interfacesGUI:
edit <Interface>
set allowaccess capwap
end
end
By enabling this, it allows the FortiGate to discover the FortiAP's connected to the respective interface.
Related Articles
Technical Note: How to reject CAPWAP discovery request coming from an unknown Access Point
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