Hello,    I've observed this mainly on iOS 11.x devices and some Android devices running Oreo.   This has been ongoing for months.  The "fix" is to reboot the AP, or any sort of change to the AP that will reset the radio (such as modifying channel-width or client load balancing and such).     I'm using the MR42 platform.   I've run several pcaps when the issue occurs, and what I see is associate probes, probe responses, authentication completes and association is successful.  The following is a series of client RTS and AP CTS packets.  But that's it.  No data.  The client just keeps asking over and over "Ready to Send" and the BSSID will respond with "Clear to Send" but the client never sends data.   Because I'm running NAT mode with Meraki DHCP, a DHCP address is never obtained because absolutely no data is ever sent, even though the client is associated.   I've been going back and forth with 3 different Meraki support engineers on this.   A couple things I've noticed:   I have 2 old iOS 9.3.5 devices that don't have this problem at all.   Only updated 11.x devices.   When I run into an AP that is acting up, I will walk around to a different AP and it will  associate and work fine.   As mentioned before, any sort of reboot or state change or radio reset on the AP will temporarily fix the problem.   So...anybody run into this?   ... View more

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.     ... View more

I have a mixture of about 35 MR42s and MR52s rolled out across a couple buildings.  I manage them remotely.  These things pretty much take care of themselves and have been great.  However when wifi users run into problems, they are usually very tough to pinpoint a cause...the symptoms are transient but usually narrow down signal issues.   Is there a tool I can use (remotely) that can tell me "ok yeah, that area right there...there's interference, signal loss etc." or even something in the event logs that may indicate a weak signal, interference.   thanks. ... View more