如果很多年前．人们还在讨论TCP／IP的优劣以及它的前途的话，那么现在IP网络随着Internet的不断扩张，已经by为网络世界的主宰。1997年，Internet的IP流量首次超过了电信网的语音流量，而且IP流量还在直线上升。IP网络的不断扩张促进了3大网——电信网、计算机网、有线电视网 If many years ago. People are still discussing the pros and cons of TCP / IP and its future, then now with the continuous expansion of the Internet IP network has been dominated by the online world. For the first time in 1997, the IP traffic of the Internet surpassed that of the telecommunications network, and IP traffic was still rising in a straight line. The continuous expansion of the IP network has promoted 3 major networks - telecommunication network, computer network, cable television network