We have a kind of BYOD access to Internet for iPhone users. We have a site C5508 controller with 7.6.100.0 and a DMZ ( anchor ) C5508 controller running 7.6.100.0 version as well.
We have several APs associated with the site WLAN controller; models are AIR-LAP1252AG, AIR-CAP3502I.
The iPhone clients work well with these APs, in both 2.4 and 5 GHz.
Recently we bought AIR-CAP3702I AP, got it associated with the site controller and iPhone users being connected to this AP complained they did not have access to Internet. All other SSIDs ( we have several ) worked fine.
I tried to make couple of changes and finally realized that if I turn off 5GHz ( 802.11a ) hard on this AP, the clients work well – means via 2.4 GHz.
I tried to upgrade the site controller to version 7.6.110.0, but this did not help and behaves the same way.
The site is a remote site and it is quite hard to perform tests directly with the users.
Does anyone have a clue what the issue could be about. Is it a kind of incompatibility between Cisco AIR-CAP3702I and iPhone in 802.11a ?
Thanks,
Vlad