摘要
PPPoE是一种很常用的拨号协议,介绍PPPoE Discovery阶段的基本流程和帧封装格式,同时介绍PPP的连接控制协议(LCP)、认证协议(CHAP、PAP)I、P控制协议I(PCP)各协议子层之间的关系和PPP的数据包封装格式。讨论PPPoE、PPP协议在嵌入式操作系统VxWorks的TCP/IP协议栈体系中的具体位置和PPP、PPPoE数据包收发二个方向的处理流程,同时给出VxWorks下PPPoE实现的具体的软件模块设计,具有一定的工程应用价值。
PPPoE is a popular dial up protocol used in the intemet. The two main basic states of PPPoE are discussed in this paper,one is PPPoE discovery state and the other is PPPoE session state. LCP, CHAP, PAP, IPCP and the other related protocols of PPP are also introduced with the flow chart and the frame structure. In the end, an implementation of PPPoE based on VxWorks operating system including the partition design of software module is introduced.
出处
《国外电子元器件》
2006年第5期9-11,15,共4页
International Electronic Elements
