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文章首先介绍了X.25与TCP/IP协议的特点,然后讨论在公用数据网上进行IP通信的意义,接着介绍在X.25上实现IP的一种技术──隧道效应,最后给出一种实现方法。
The article first introduced the X. 25 and TCP / IP protocol features, and then discuss the significance of IP communications over public data networks, followed by an introduction at X. 25 to achieve a kind of IP technology ─ ─ tunnel effect, and finally gives a way to achieve.