在以太网中,一个主机要和另一个主机进行直接通信,必须要知道目标主机的MAC地址。而MAC地址可以通过地址解析协议(ARP)获得。ARP的基本功能就是通过目标主机的IP地址,查询其物理MAC地址,以保证通信的顺利进行。 ARP协议是建立在信任局域网内所有结点的 ...
As I understand things... An ARP request is a system querying an IP address and asking for the MAC associated with that address. Routers and switches send to MACs not IPs (right?) so they need to know ...