盛行全球的Internet网络是基于TCP/IP协议族为基础组建的，TCP/IP是网络通讯系统互联的事实标准。研究嵌入式系统的网络化，就要先从TCP/IP的概念入手。-The prevalence of the Internet global network is based on TCP/IP protocol suite, based on established, TCP/IP network communications system is the de facto standard for the Internet. Research on embedded system network, it is necessary to start with TCP/IP of the concept.