We have a fairly standard Clearpass Guest configuration and 10 IAPs.
Captive portal guest authentication works very well but we are having a real problem with sessions seemingly being dropped after relatively short periods of inactivity. Guests come to our site, get a login (either created manually or self-registration with sponsor approval), and get their iphone or ipad online. But when they put their device down for 10-15 minutes and come back to it, they find there is no longer a connection.
Often they either have to select the wireless network again from scratch, and/or type in their clearpass login (or, if they didn't make a note of their password, go through the self-registration process again).
I'm aware some of this depends on the device (iOS has auto-connect and auto-login settings for wireless networks that require authentication) but even with those options selected, the process is far from reliable.
Simple question, is this a basic limitation of captive portal guest authentication in general, or should the user experience be better? Ideally, if we assign a guest account valid for 8 hours, we'd like the device to be seamlessly connectable for roughly that period - even if the device is not contantly is use.
Is there anything I can adjust on the Instant APs or clearpass to improve things?