MEF 21认证重点考察链路运行、管理和维护（Link OAM）机制，以便实时发现、监控和管理网络故障及性能。-MEF 21 certification inspection focus on the link operation, management and maintenance (Link OAM) mechanisms for real-time detection, monitoring and management of network fault and performance.

哈尔滨工业大学论文，介绍了汽车故障诊断标准ISO15765的网络层分析与实现，对于初次接触该协议的人理解iso15765网络层很有帮助-Harbin Institute of Technology thesis, describes the standard ISO15765 for automotive fault diagnosis and implementation of network layer analysis, the agreement for the initial cont