After a mishap with some recent decorating at home, i killed the cat5 network cable between my lounge and home office. unfortunately i only noticed this after finishing the redecorating and was not going to pull up the flooring.

Network was rock solid with that setup and never saw issues.

So with this broken cable, I used it as a reason to future-proofing upgrade above 1gig and went with wifi 7 (2x EAP772's) to replace that broken cable. Intention was to use 6ghz band for the wifi backhaul, with 2.4 & 5ghz for clients although currently seems the mesh is using any band it wants.

Unfortunately i'm seeing that mesh backhaul link fail frequently. it's failed 3 times in about the last hour. yesterday was atleast twice in a 12hour window. Not only does it take a few minutes to bring the LAN network back, it then takes another minute or two for the internet to come back as the router periodically attempts reconnection. So we can have internet disrupted for approximately 5 minutes.

EAP772 distance is around 10-15 meters so this is not a weak signal.

Clients connected to the EAP772's do not appear to be loosing direct connectivity to the AP, so seems specific to the mesh side.

Heres my current Omada map:

My router (opnsense) connects to Cab-2.5g_08-AD. Being UK fibre, i then run PPPoE via a vlan through to the LivingRoom-OE-49 which connects to the ONT and out to ISP.

Based on uptimes, then it is the link itself failing, and not a device reset issue (current uptimes are >1.5days)

i've ran multiple sustained pings to switches to determine the failure and from a client connected to the EAP772-61-F0, only the LivingRoom-OE-49 is failing (& anything beyond it)

As a temporary measure and for further testing, i've re-connected my older EAP653 to serve clients, and disabled 2.4ghz & SSID's on the EAP772's so those should be backhaul/mesh only. Will see if this improves the issue.

any advice on whats going on here?