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arp是哪个层的协议
更新时间: 2020-11-01 00:00:00  

arp是网络层的协议。地址解析协议即ARP是根据IP地址获取物理地址的一个TCP/IP协议。主机发送信息时将包含目标IP地址的ARP请求广播到局域网络上的所有主机,并接收返回消息,以此确定目标的物理地址。收到返回消息后将该IP地址和物理地址存入本机ARP缓存中并保留一定时间,下次请求时直接查询ARP缓存以节约资源。地址解析协议是建立在网络中各个主机互相信任的基础上的。

关键词: arp 哪个 协议

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