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本文对局部网网络层协议中最重要的一类协议一载波检测型协议进行了讨论。着重分析了坚持和非坚持型 CSMA 协议和以太网络协议,对它们的工作过程、相互之间的内在联系、基本特征参数(吞吐量、延迟特性以及信道效率)进行了定性或定量的分析与比较,并讨论了它们与相应的远程网协议之间的联系和区别。从而,在 ISO 七层网络模式第3层—网络层上,从原理的角度对网络协议进行了系统详细地分析。
This paper discusses the most important type of protocol-carrier detection protocol in the local area network layer protocols. Analyzes and compares qualitatively or quantitatively the persistent and non-persistent CSMA protocols and Ethernet protocols, and analyzes their work processes, inter-relationships and basic characteristic parameters (throughput, delay characteristics and channel efficiency). , And discussed the links and differences between them and the corresponding remote network protocols. Thus, in the ISO seven-layer network mode Layer 3 - Network layer, from a theoretical point of view of the network protocol was analyzed in detail.