We've had this back from Meraki! Following investigations, we have narrowed down the issue we are seeing with the "Ethernet uplink speed degraded" alerts on the affected MR APs, which causes the link speed being degraded from original 1000Mbps to 100Mbps and confirmed is associated to a known issue. This issue is already being investigated by our development team internally and we currently have no estimate on when the fix will be implemented but we are working on it. We saw the alert pop-up initially on some AP's which were connected to switches which only had 10/100 ports and could never have run at 1000, so I believe there are a few scenarios at play here. Genuine issues with AP's that were connecting at 1000 that have dropped to 100. AP's that it's now highlighted had faulty cabling but COULD have negotiated at 1000. AP's that were correctly negotiating at 100 due to switch limitations, but wrongly alerted as being degraded.
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