Does the switch port that your 220 Pro connects to have an LED to tell you whether the Ethernet link is up (independently of whether there's traffic on the port)? If so, can you see whether the link staying up steadily or cycling between up and down?
One other thing: do you have wi-fi enabled in your 220 configuration? If so, it might be worth disabling that. I understand that the wi-fi and Ethernet interfaces are in effect mutually exclusive so if the wi-fi was periodically linking to an access point it might knock out the Ethernet (speculating wildly) - best get that out of the equation in any case.
One other thing: do you have wi-fi enabled in your 220 configuration? If so, it might be worth disabling that. I understand that the wi-fi and Ethernet interfaces are in effect mutually exclusive so if the wi-fi was periodically linking to an access point it might knock out the Ethernet (speculating wildly) - best get that out of the equation in any case.
Roon (Mac Mini), Wilson Benesch Full Circle, Expert 1000 Pro CI, Kaiser Chiara
Warwickshire, UK
