We're using RADIUS for authentication in our WPA-2 enterprise environment and are running into issues where iOS devices (so far iPhones and iPads) are forced to re-enter their credentials fairly often. It seems that whenever a device roams to another network (home wi-fi, coffee shop, etc.) that this happens. I've personally noticed it with my device but I also tend to reboot which I thought was the issue but other users have started to complain now, too. All other clients (desktops, laptops, Windows, Mac, Raspberry PI's) are working and can roam without issue. None of the iOS devices have enterprise profiles loaded, they're just stock. We followed the Meraki Guide for RADIUS/WPA-2 pretty much exactly as far as I can tell. Is this a known issue and is there a solution?
I have not seen this issue before.
When the user is getting prompted for their password again - do you see anything in the RADIUS log? If may be that the RADIUS server is rejecting the authentication attempt, forcing the client to ask for a username/password again.
Are you using PEAP with MSCHAPv2, or some other kind of authentication?
What authentication method were you using?
Your settings should look something like this: