Bridging Lan with an SSID *without using a software switch*

[Franco]

Hello,

I'm interested in bridging my Lan to an SSID without using a software switch for the Lan ports (that obviously works, but has performance issues).
Now I have in place working "standard" configuration using Fortigate / FortiAP both on FortiOS 6.4 using a software bridge including the Lan ports and a specific SSID, while other SSIDs work in tunnel mode using their filtering rules.
I found an interesting post about it here using VLANs:
https://exitcode0.net/fortigate-ap-bridge-with-a-hardware-switch/
but some images are missing and I am not able to understand some details. Does anyone know how to do it?

[Toshi_Esumi]

If your FAP is connected on the LAN hard-switch, a bridge mode SSID should bridge WLAN clients to the LAN hard-switch.

Toshi

[Franco]

This is for sure, but this is not possible if your AP is on a different network. I'm looking for solution working in this scenario not using a software switch.