FortiAP cannot be discovered

Forum|Forum|6 months ago
December 17, 2025
4 replies
868 views

I connected the FortiAP (FortiAP-FP431F) to the lan, and the firewall is a FortiGate VM (v7.4.9 build2829 (Mature)). I found that the FortiAP can obtain an IP address from the DHCP LAN port of the firewall, but the FortiAP device is not discovered in the WiFi controller's "Managed FortiAP" menu. What could be the issue, and how can it be resolved?

Best answer by funkylicious

not a wireless expert, but have a read at https://community.fortinet.com/t5/FortiAP/Technical-Tip-How-to-encourage-WiFi-clients-to-connect-to-5-GHz/ta-p/197785

funkylicious

SuperUser

hi,

under the LAN interface on the firewall make sure to enable administrative access Security Fabric Connection also.

"jack of all trades, master of none"

52000ccAuthor

New Member

Hi,

Do you mean to turn this on?

funkylicious

SuperUser

yes, that's the one.

is the AP directly connected to the subnet/LAN of that interface where that option is enabled ?

try diagnose sniff packet <interface_name> "port 5246" 4 - to see if any capwap packets can be see on the interface in question from the FortiAP.

"jack of all trades, master of none"

52000ccAuthor

New Member

Thanks. After turning it on, the AP can now be discovered. However, when I connect my iPhone to the AP, I notice that it only connects to the 2.4G band. What could be causing this issue?

funkyliciousAnswer

SuperUser

not a wireless expert, but have a read at https://community.fortinet.com/t5/FortiAP/Technical-Tip-How-to-encourage-WiFi-clients-to-connect-to-5-GHz/ta-p/197785

"jack of all trades, master of none"

52000ccAuthor

New Member

thanks!

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