Segmentation of non-vlan aware access points

Hi,

I’m using several TP-Link Deco M5v3 (EU) in AP-mode on which I cannot pass VLANs since the accesspoints are not VLAN-aware.

The main-deco is connected via cable to the main OpenWrt router. The other decos are connected wirelessly via the regular Deco app. On the main router I use VLAN 50 for the deco network and IP addresses in the 192.168.50.0/24 for the devices that connect to the deco’s.
Indeed all devices that are connected to wifi get a IP address in the mentioned range.

Can I segment the 192.168.50.0/24 network on the main OpenWrt router via aliases so that I can create an interface for each of the 4 /26 subnets so that I can add these interfaces to distinct firewall zones?

How can I define / accomplish this on the main router?
Of course I need to assign for each wireless device a proper IP-address via static leases so that the devices fall in the correct segment.

Thanks for your support.

No. This type of setup requires VLANs which you said is not possible on the APs.

OK, thanks for your reply.