DoIP – ISO 13400 (Diagnostics over Internet Protocol)

DoIP (Diagnostic over internet protocol) is a TCP/IP based transport protocol for UDS and is fully compatible with the existing Ethernet standard. It offers great advantages com­pared to a CAN-based transport. The reasons are a much higher data transfer rate, cost reduction due to the omission of an otherwise required CAN interface (VCI) and an extremely simple integration into IT infrastructures.

For vehicle manufacturers and suppliers, this transport protocol is partic­ularly popular because DoIP also enables large flash tasks and complex dia­gnostic app­li­ca­tions to be implemented in a much shorter time. In addition, the phys­ical medium is irrelevant for this protocol, which allows trans­mis­sion via Ethernet as well as WLAN or mobile phone tech­nology, for example.