局域网的多点访问方式主要有固定分配，随机分配和按需分配三大类型。本篇文章主要分析随机分配方式网络的各种性能指标，包括在各种协议工作方式下的输入业务量，吞吐量，平均归一化传输时延，系统稳定性等。-LAN multi-access methods are mainly fixed allocation, random allocation and distribution according to need three types. Various performance indicators Th