In theory, MESH can work both on 2,4 and 5 GHz. The point is no vendor wants to make mesh on cheap 2,4Ghz devices. To tell the truth, I myself would not do it for eap115-wall, because this device is...

As I remember, If you have v1, then URL filtering will not block HTTPS websites, while HTTP will be OK. TL-ER6120 v2/v3 blocks both, because it blocks DNS requests. Be sure, that you check filtering...

Hey, you can check the User guide and emulator https://emulator.tp-link.com/staticER6120/index.html Yes, TL-ER6120 has web-interface and it has Firewall / Policy Routing

What is "Router Provider"? "Provider" usually means ISP, so you can't manage it by yourself. If I were you, then I woudn't terminate VLANs 10,20,30 on switch, while I would do it on Router, so my...

Good for you, man. As I said, if you configure SSID with VLAN, then your LAN port of AP will be tagged, so your switch port should be also tagged.

No. Your VLAN 30,40 tagged should go until the router, which port also should be configured as 30,40 tagged. VLAN 1 you can keep if it is your management VLAN.