似乎添加目标 MAC 地址是出于路由目的。但是在数据包中包含源 MAC 地址的目的是什么？
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1
One purpose, besides telling the destination host where to send the reply, is i.e. in switches. They use the source address to identify the address of the system on a specific port. Next time they see that address as the destination, they know where to send the packet. Otherwise, the packet would need to be sent to all ports, making the switch perform not much better than a simple hub.
于 2014-03-18T19:40:30.387 回答
0
源 MAC 地址的一种用途是让交换机发现 MAC 地址连接到哪个端口。
于 2014-03-18T19:35:21.413 回答