此软件是从事嵌入式的开发人员进行TCPIP学习时使用的代码，有一定的指导意义，里面包括ARP ICMP IGMP OSPF协议等网络相关的协议代码，并且里面有SIP等语音网关的相关协议的代码。-this software is embedded engaged in the development of personnel TCPIP learning to use the code, a certain guiding significance, ARP, ICMP, including in

用C语言来实现OSPF,代码比较庞大，详细，适合对OSPF进行深入学习(C language to implement the OSPF, the code is large, detailed, suitable for in-depth study of the OSPF)