Diagnostics over Internet Protocol (DoIP) (ISO 13400) brings IP-based transport to automotive diagnostics over Ethernet. In software-defined vehicles, DoIP enables high-throughput, secure communication between cloud data services (including diagnostic tools and OTA updates) and the vehicle, improving real-time data exchange and remote serviceability across the lifecycle.
DoIP provides an IP entry point to the vehicle via a DoIP gateway. The gateway routes Unified Diagnostic Services (UDS) requests to individual ECUs—many of which sit on CAN or other legacy buses—so automakers gain IP-level access to distributed systems without requiring every ECU to run an IP stack.
Because DoIP rides on standard IP, it can be securely bridged to cloud backends. Vehicles and target ECUs are addressed using DoIP’s vehicle identification and logical addressing, letting cloud services interact with precise functions for fault analysis, software management, and predictive maintenance.
SOME/IP (Scalable service-Oriented Middleware over IP) complements DoIP by enabling service-oriented messaging and discovery among in-vehicle devices. In practice, DoIP handles diagnostic transport while SOME/IP supports distributed services and data aggregation; gateways can expose selected services to cloud applications when required.
Together, IP-based diagnostics (DoIP), service-oriented middleware (SOME/IP), and high-bandwidth Ethernet form a foundation for scalable, cloud-integrated vehicle platforms that support faster issue resolution, safer updates, and future-ready architectures.
Excelfore provides standards-based connectivity and OTA solutions for intelligent vehicles.
Final Thoughts
As the automotive industry accelerates toward intelligent, autonomous, and software-defined architectures, technologies like DoIP are no longer optional—they're essential. DoIP doesn’t just enable diagnostics; it unlocks an entire ecosystem of connected automotive solutions, from real-time analytics to automotive OTA and AI-driven vehicle intelligence.
With Excelfore standards-based technology stacks, automakers can confidently embrace this evolution and build vehicles that are not only connected but truly future-ready.
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