I believe the problem is with the Meraki cloud. Earlier, in the same call, the engineer said this: “We had a recent issue which alerted for the same: "Ethernet uplink speed degraded" error, but that was due to an alerting issue and the engineering team disabled the alert for all customers. The alert is now enabled and contains fixes to properly alert. The reason you see the alerts across multiple sites is because the alert was disabled, which may have hidden valid alerts, and now those alerts are properly shown. The next step is to investigate the physical layer or negotiation settings." ... View more