网路层

[中文适用范围]： SAE J1939-31 网络层描述了网络互连 ECU (NIECU) 的要求和服务，使网络段上的电子控制单元 (ECU) 能够与车辆网络不同网段上的其他 ECU 进行相互通信。本文档定义了各种类型的 NIECU。本文档中的信息仅适用于旨在提供网络服务的 ECU。 ECU 没有必要为了符合 SAE J1939 协议而提供任何这些服务。 [外文原描述]： SAE J1939-31 network layer describes the requirements and services for network interconnection ECUs (NIECU) that enable electronic control units (ECUs) on an SAE J1939 network segment to intercommunicate with other ECUs on different network segments of the vehicle or system network. This document defines various types of NIECUs. The information in this document applies only to ECUs that are intended to provide networking services. It is not necessary for an ECU to provide any of these services in order to be compliant with the SAE J1939 protocol.Cross Reference: ANSI/IEEE STD.801-1D,ISO11783,ISO11898-1,ISO11992,ISO15765,J1587,J1922,J1939/1_201806,J1939/21_201504,J1939/2_201901,J1939/71_201404,J1939/81_201602,J1939_201808