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Glossary · Vehicle Networks
DoIP
Also known as: Diagnostics over IP, ISO 13400
Diagnostics over IP (ISO 13400) — UDS over Ethernet/IP transport.
DoIP carries UDS diagnostic messages over TCP/IP, allowing higher-bandwidth diagnostic and reprogramming flows than CAN-TP. It is the standard transport for OTA reprogramming and high-data diagnostic operations on Ethernet-equipped vehicles.
Why it matters
DoIP is the high-bandwidth pipe for OTA reprogramming and deep diagnostics on Ethernet vehicles — which also makes it a high-value attack surface. Pairing DoIP with secure diagnostics and authenticated reprogramming is a standard threat-scenario mitigation that assessors expect to see traced through the TARA.
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