ARP协议揭密
IP数据包常通过以太网发送。以太网设备并不识别32位IP地址：它们是以48位以太网地址传输以太网数据包的。因而，IP驱动器有必要把IP意图地址转换成以太网网意图地址。在这两种地址之间存在着某种静态的或算法的映射，常常需求检测一张表。地址解析协议(AddressResolutionProtocol，ARP)即是用来断定这些映象的协议。(IP packets are often sent over Ethernet. Ethernet devices do not recognize 32-bit IP addresses: they transmit Ethernet packets with 48-bit Ethernet addresses. Therefore, it is necessary for the IP driver to convert the IP intent address into the Ethernet intent address. There is some kind of static or algorithmic mapping between these two addresses, often requiring a table to be checked. The Address Resolution Protocol (AddressResolutionProtocol, ARP) is the protocol used to determine these images.)
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