I would like to understand this process a bit more and the authentication flow. Using ClearPass (similar to ISE) as a RADIUS server.
PC authenticates successfully via dot1x (EAP-TLS) when plugged into jack. However, when plugged in via VoIP, it fails. Discovered that the pC is not able to auth via MAB because the MAC is not in the MAC Address table. Once added MAC to MAC Address table, PC successfully authenticates via dot1x and MAB.
What is the relation to VoIP here? If the PC can auth successfully via dot1x(EAP-TLS) on its own, what triggers the PC to roll over to MAB and fail?