I currently have 2 ACS server's running ACS v4.2 with PEAP. I am doing self-signed certificates on the ACS. What I am trying to configure and test is the redundancy portion of having 2 radius servers. I have both server's configured on my WCS (v18.104.22.168) and tried to have my test machine only have the certificate of the backup ACS server. I can't get my client to authenticate or even fail. Does anyone have a test scenario and configuration for redundancy? My certificate is getting ready to expire on my primary and I'm trying to figure out how to prevent my end clients from losing connectivity.