I suddenly have a client that has been having a lot of problems with their Airport Extreme v5 (A1408) router on Comcast, and I aim to get to the bottom of it. I was remote, my client was pulling the strings. So I couldn't do a whole ton of diagnostics. The goal was to get back and running as soon as possible. On the Apple Airport Extreme, "Green means Good". Until Now. Usually, a solid green LED on the Airport series means that everything is A-OK. But despite the green, the Extreme didn't seem to be broadcasting its WiFi SSIDs, and the Extreme didn't seem to be talking to the modem. It was all very sad. In fact, both the WiFi and Ethernet of the router were non-functional. A hard (power) restart of the modem and router, connectivity came back and would work perfectly well for 5 to 60 minutes, and then the router would "disappear" again. The router's LED and the modem lights claimed that everything was A-OK, but the lack of visible...
Useful and Useless Ideas from Lance J.