Unifi Switch > PoE Injector > LocoM2 base station: All ethernet cables checked (OK) & replaced anyway. Lights are on on the rear of the M2 base station BUT Switch shows port as black / Disconnected.
Unifi LocoM2 remote station > PoE injector > Airport Express. All ethernet cables checked & OK. Lights are on on the rear of the M2 remote station BUT Airport Express flashing orange & no connectivity.
I hesitate to want to press the reset button(s) on the LocoM2s as that could mean removing them from up poles & setting them up again from scratch. Connectivity had been getting a bit flakey over the past several days, but now it is rock solid not working.
What else to check / try? I have swapped out the Airport Express with another, but as soon was I take it up to the top of the drive no network access is available. I have tried a different port on the Switch - both PoE and unpowered, but no difference. I've even taken a long handled chainsaw out to lop off some branches mid way just in case they were getting in the way.