In the Topology area if you select the "Ethernet" option all the access points have red or blue vertical lines drawn from beneath the floor plan up to them. An access point may start with a blue line and then change to a red line. What is the meaning of the two different colours?
The HiveManager regularly polls the APs for their mesh and ethernet connections. Basically it polls for the information you can see using the ‘show amrp neighbor’ CLI command. The ethernet lines for an AP will show in red if for some reason the HiveManager could not poll the AP for that information. Usually it means that the CAPWAP connectivity is (temporarily) lost, or that the HiveManager was restarted and the APs are in the process of re-establishing the connection. The reason why the HiveManager still shows both the mesh and ethernet lines (in red) is because the polling must have been successful earlier, and the HiveManager persists those connections.
If the lines keep toggling between red and blue, that would indicate an unstable CAPWAP connection and it should also be reflected in the CAPWAP connectivity status.