道路车辆 基于互联网协议的诊断通信（DoIP） 第2部分：传输协议和网络层服务

[中文适用范围]： 本文件规定了使用互联网协议（IP）以及传输控制协议（TCP）和用户数据报协议（UDP）进行安全和非安全诊断通信的客户端DoIP实体与安装在车辆中的服务器之间的通信要求。这包括对车辆网关需求（例如，集成到现有计算机网络）和测试设备（客户端DoIP实体）需求（例如，检测并建立与车辆的通信）的定义。本文件规定了用于在网络中检测车辆并实现与车辆网关及其子组件在各种车辆状态下的通信的功能。这些功能分为两类：强制功能和可选功能。本文件规定的强制功能包括：— 车辆网络集成（IP地址分配）；— 车辆公告和车辆发现；— 车辆基本状态信息获取（例如，诊断电源模式）；— 连接建立（例如，同时通信尝试）、连接维护和车辆网关控制；— 数据在车辆子组件之间的路由；— 错误处理（例如，物理网络断开）。本文件规定的可选功能包括：— DoIP实体状态监控；— 传输层安全（TLS）；— DoIP实体防火墙功能。 [外文原描述]： This document specifies the requirements for secured and unsecured diagnostic communication between a client DoIP entity and server(s) installed in the vehicle using Internet protocol (IP) as well as the transmission control protocol (TCP) and user datagram protocol (UDP). This includes the definition of vehicle gateway requirements (e.g. for integration into an existing computer network) and test equipment (client DoIP entity) requirements (e.g. to detect and establish communication with a vehicle). This document specifies features that are used to detect a vehicle in a network and enable communication with the vehicle gateway as well as with its subcomponents during the various vehicle states. These features are separated into two types: mandatory and optional. This document specifies the following mandatory features: — vehicle network integration (IP address assignment); — vehicle announcement and vehicle discovery; — vehicle basic status information retrieval (e.g. diagnostic power mode); — connection establishment (e.g. concurrent communication attempts), connection maintenance and vehicle gateway control; — data routing to and from the vehicle's sub-components; — error handling (e.g. physical network disconnects). This document specifies the following optional features: — DoIP entity status monitoring; — transport layer security (TLS); — DoIP entity firewall capabilities.