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4-IP协议
tobeavampire的博客
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IP作为整个TCP/IP协议中至关重要的协议,主要负责将数据包发送给最终的目标计算机,IP能够让世界上任何两个计算机之间激进行通信。

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数据链路层提供直连两个设备之间的通信功能,作为网络层的IP则负责在没有直连的两个网络之间进行通信传输

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IP大致分为三大作用模块:

IP寻址,路由(最终节点为止的转发),以及IP分包与组包。

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IP属于面向无连接型:原因:

一是简化,二是提速

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