I have seen a few other postings similar to this but none of the ideas presented have helped (not that there was ever a real solution or fix presented on those posts....just sayin').
I have set up two IAP-105 APs (maybe adding more later if this can be fixed). Only one of the APs will authenticate to Radius (Win 2003 IAS) at a time and that AP has to also be the Master AP which hosts the virtual controller. If the working AP is taken down and the other AP takes over the VC role then it WILL also authenticate properly. However, when both APs are powered on at the same time only the master AP will authenticate. Our guest wireless works fine on both APs at all times. If I try to authenticate near the non-master AP "trying to authenticate" is all I will see (for as long as I remain in the vicinity). If I take that laptop and walk toward the VC hosting master AP the signal will be passed to that AP and the login will be authenticated and the connection completes.
Please help...we have saved no $$$ with this purchase if we take into consideration the amount of lost time trying to get this "easier than toast" (yeah right!) wifi solution working.
So, allowing each AP to be the master on its own has not solved the problem as stated in several other posts. Any help will be greatly appreciated...