Omnes: Wail! The Wifi worketh not in the main living quarters!
Hmm, indeed I can't connect to the access point in that part of the house.
The lights are on, so it's getting PoE, the SSID is there and I can initially connect, but it's hung up at Authenticating.
Reboot the access point. No better.
Through to computer room (wifi is fine there, different AP ), and log into the authentication server and look at the logs.
No authentication requests from the problem device for over an hour. Strange.
Hmm, can't ping the AP from the computer room.
In fact, I can't ping anything on that side of the house.
They all share a common Access Switch ( one of 3 ), which then uplink to a central Core Switch.
A bit of prodding around, and I discover the uplink between the problem Access Switch and the Core Switch has actually *Fallen Out*.
The small patch cable was missing it's little tab, and the weight of some other patch leads had pulled it out!