Hi,
I have a Mikrotik hAP acᄇ and a Chateau LTE. Due to the structure of the building, there is a fiber optic connection in the basement, but there is no adequate LTE coverage there. The router should therefore be installed on the ground floor in the office.
The fiber optic connection requires PPPoE via VLAN 7. The configuration to establish a connection via fiber optics and the failover via LTE work without errors if I connect the fiber optic connection directly to eth1 via in-house LAN cabling.
However, as I also want Wi-Fi to be available in the basement, I would like to integrate the hAP into the line so that I can accept the fiber optic connection on eth1 at the hAP and pass it through to the router via VLAN. While I was even able to set up the WLan configuration for 3 SSID via VLAN, I can’t manage the setup for the fiber optic cable.

What is the best way to solve this?
Thank you and Merry Christmas