Hi everyone,

Could someone help me out with a networking issue?

In my living room, I have an Archer C80 (v1.0, Firmware 1.14.30 Build 250729) connected via Ethernet cable to my ISP’s router.

In two other rooms, I have wall-mounted Ethernet ports. One of these ports is connected to a switch that feeds several devices, all of which are working perfectly.

In those two rooms, I’ve installed two RE700X (v1.0, Firmware 1.3.15 Build 20251124) units. As far as I know, this firmware version supports Ethernet Backhaul. Both the Archer C80 and the RE700X units have EasyMesh enabled.

The Problem: When I connect the RE700X units via Ethernet cable to use Ethernet Backhaul, most of the times, the Wi-Fi from the RE700X units stops working properly.

A very few times, I have Wifi internet on mobile devices, but most of the times, don't.

They both appear as "Mesh Devices" on the Archer C80 management page with no apparent configuration errors. Mobile devices can successfully connect to the RE700X Wi-Fi, but there is no internet access provided through them.

What am I missing here? Any help would be greatly appreciated!

Archer C80: