12 Engenius EAP350 Wireless Access Points
200 wireless devices across campus
WPA2-Enterprise (using PEAP for user authentication in a BYOD environment)
Server 2008 R2 (AD) running NPS providing RADIUS and server certificate
That is my current setup. We used to run our APs in WEP 40-bit, but I can't stand that any longer. Since I have upgraded to the setup listed above, we have had all kinds of problems with devices connecting.
The issues we are having are intermittent, and I have yet to find a pattern. If one Mac can connect, another cannot. One iPhone can connect, another cannot. PCs, Androids, so on and so forth.
Here are some things I have done to try to resolve this
Ensured that all users needing wireless are a member of the domain\wireless group (per NPS policy)
Ensured that all units are running the same firmware revision (as all are the exact same model)
Did a backup of the configuration on a unit that more people could acces, and restored to all other units (changing only the IP and the unit name).
Verified that devices which do connect with AD username/password are indeed able to access the internet and appropriate network resources
Any troubleshooting suggestions, and generally sage advice, would be much appreciated.