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Internet 起源于美国。今天 Internet 上连接了成千上万台计算机,它们必需有一个惟一的代码来标识自己,这就是 IP 地址(Internet Protocol Address),它是 TCPIP 协议组的低层协议,它在全球范围内实现不同硬件结构、不同操作系统、不同网络系统的互联。没有它,其他协议发送的数据无法到达目的地。现行的 IP 协议,全称是“互联网协议第4版”(简称IPv4)自1981年以来没有多大改变。实践也证明 IPv4具有相当强盛的生命力,经受住了从早期小规模互联网
Internet originated in the United States. Today there are thousands of computers connected to the Internet. They must have a unique code to identify themselves. This is the Internet Protocol Address. It is a low-level protocol of the TCP IP protocol suite. It is globally deployed Achieve different hardware structures, different operating systems, different network systems interconnection. Without it, data sent by other protocols can not reach its destination. The current IP protocol, the full name is “Internet Protocol Version 4 ” (hereinafter referred to as IPv4) has not changed much since 1981. Practice also proved that IPv4 has quite strong vitality, has stood the test from the early small-scale Internet