本文件规定了使用互联网协议（IP）、传输控制协议（TCP）和用户数据报协议（UDP）在客户端DoIP实体和安装在车辆上的服务器之间进行安全和非安全诊断通信的要求。这包括定义车辆网关要求（例如集成到现有计算机网络）和测试设备（客户DoIP实体）要求（例如检测和建立与车辆的通信）。 本文件规定了用于在各种车辆状态下检测网络中的车辆并启用与车辆网关及其子部件通信的功能。这些功能分为两种类型:强制和可选。 本文件规定了以下强制性特征: -车辆网络集成（IP地址分配）； -车辆通告和车辆发现； -车辆基本状态信息检索（如诊断电源模式）； -连接建立（例如并发通信尝试）、连接维护和车辆网关控制； -与车辆子部件之间的数据路由； -错误处理（例如物理网络断开）。 本文档规定了以下可选功能: -DoIP实体状态监测； -传输层安全（TLS）； -DoIP实体防火墙功能。

This document specifies the requirements for secured and unsecured diagnostic communication between 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 sub-components 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 disconnect). This document specifies the following optional features: — DoIP entity status monitoring; — transport layer security (TLS); — DoIP entity firewall capabilities.