I had to remove the LAGG configuration as the respective trunk/access port to select in the Switch VLAN was confusing me. (Yet to hear from TPlink.)
But, minus the LAGG, I got the setup is working as expected. I have VLAN segmentation and all 5 SSIDs are doing fine.
I noticed that I cant seem to make Suricata (IDS) work properly. I have selected 8 rulesets and the suricata services starts and exits in about 2-3 mins, without making any logs.
The CPU is i5 7600 and the system has 16 G RAM and 8G of swap (when I installed opnsesne).
Any idea , or should I create a new thread ?