Hello, I have 2 interconnected buildings with 35 APs total. About 300 wireless devices (mostly phones, some tablets) connected to the wifi system on a daily basis. My APs are all MR42 on the floors and MR52 in my boardrooms. I have 2 internet connections with different ISPs and the connections run active/active. Over the past few months, and in only 1 of the buildings, my users have been reporting they can connect to the wifi, but then (in iOS) it will say "No Internet Connection" with that familiar orange exclamation mark. This happens across all SSIDs. So, I don't know where to start looking here. Only 1 building affected. All devices run the same firmware and share the same internet. And the issue is intermittent and it *seems* like when it happens it hits a particular AP all at once..but this is only anecdotal i have no read evidence. The fact it's only ever been reported from one building tells me it's something in this building...but I can't rule out perhaps a few wonky AP units that may be misrepresenting the issue here. Any pointers on where to start looking? Also, bonus question: Anybody know the exact mechanism iOS uses to determine internet connectivity? What specifically has to fail for iOS to report "No Internet Connection"? Is it a DNS request? an HTTP GET? Anybody know? Thanks.
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