I'm trying to troubleshoot users who complain that their wi-fi periodically drops out, then automatically re-connects about 30 seconds later. We are using the ZD1200, version 10.1.1.0.55, with 4 R720s and one ZF7982 AP. About 90 total clients, mostly MacOS. Our primary SSID is set to broadcast only on the 5 GHz radio, since we are in downtown Manhattan and 2.4 GHz is basically unusable.
Using Netspot, I've done the basic signal-to-noise and RF interference mapping, and everything looks okay as far as SNR ratio. I've also used Netspot's "Discover" mode to track a single AP's signal over time. With the client laptop running Netspot positioned directly under the AP, I'm still seeing periodic signal drops for about 30 seconds (see attached picture).
I read somewhere that MacOS doesn't play too nicely with ChannelFly, so I switched to Background Scanning and that seems to have improved things a little, but I still see occasional drops. The AP logs don't show anything related to the drops (the most recent entry on this AP's Events/Activites tab is from March 4th).
I pulled a debug log based on this client laptop's MAC address with "Access Points" and "Client Association" debug components checked, but when I load the debug file into the Log Analysis tool, I don't really know where to look to analyze this specific client drop from this AP at such and such a time (e.g. this specific client dropped signal from this specific AP at 3:01 PM today- why?)
Any help would be much appreciated.