We started facing this issue after upgrading the MR56, MR53 and MR86 Meraki AP's to 28.5 firmware.  We have 150 AP's in one site and 180 AP's in another site. We did an upgrade as per Meraki supports recommendation and started seeing this issue. There is no loss in POE or uptime of the device. Meraki support has a feature to verify the uptime, who confirmed AP's are up for over weeks. We have a ticket opened with Meraki support almost a month ago. They don't have a solution at the moment and wanted us to do a packet capture on the upstream devices. It was the dumbest idea, as the issue is sporadic. ... View more