I dont really know where I can get this cert, but I created certificate in CP Onboard>Onboard>Management and control>view by certificate>upload a new certificate signing request ( that I generated in controller) (picture 1) and then I exported this cert and issued(uploaded) it to controller (Aruba 650 6.4.4.9). So in controller I configured 802.1x auth-ion by selecting my certificate as server certificate (pictire 2). Now I am trying to connect to this SSID with auth based on certificates and I can't establish the connection. As a novice I don't know I am in right direction or not. And here is my topology (topology.png). Tnx for attention.