以太网的帧结构，媒体访问控制子层（MAC）的功能是以太网核心技术，它决定了以太网的主要网络性能。MAC子层通常又分为帧的封装/解封和媒体访问控制两个功能模块。
Ethernet frame structure, media access control sublayer (MAC) is the function of the Ethernet core technology, which determines the main Ethernet network performance. MAC sub-layer is usually divided into frames of packaging/re-opened and the media access control two functional modules. (2011-04-02, QT, 31KB, 下载7次)
传奇从入门到精通(路由器开外网专版，引擎手册版)
Legends from entry to the master (network routers away special edition engine, manual version) (2010-01-06, QT, 1880KB, 下载6次)