I have Fortigate 600F (FW 7.2.10) which acts as wireless controller for
FortiAP 231g.I have configured configuration profile which changes
Management VLAN ID for APs following this article.
https://docs.fortinet.com/document/fortiap/7.4.5/fortiwifi-a...
Reason why I'm asking this is because my client has slow ADSL upload
link on premise (1Mbit) without alternative. The only way to overcome
this is to install 4G router and use mobile network for upload.