We've recently had 117 Meraki MX65's receive MX 18.107.2 (upgrading from MX 16.16.9) and the USB LTE dongles plugged into their USB ports for a failover link no longer show in the dashboard on the networks. The cellular line in the network connectivity graph ends on the date these upgraded.
We've tried rebooting devices, no change. We've tried failing over to the cellular, nothing. The LED's on the dongles that show power and connectivity no longer light up (but do if plugged into a computer). It's as thought MX 18.107.2 either turned off or killed the USB port.
Has anyone else seen or experienced this? It seems to be getting risky letting Meraki push Stable firmware releases these days! 🙁
And reading the other comments, it sounds like we should step right back to MX 16.16.9 for complete reliability especially if there is RADIUS involved...