本文解释了为什么MAC地址不能用于在网络间移动流量。只有拥有相同IP网络地址的节点才能通过交换机进行通信，而交换机只能处理MAC地址。连接不同IP网络需要路由器。
So why can't a MAC address be used to move traffic from one network to another?
[b]Only network nodes with the same IP network address can communicate across a switch.
A switch can only deal with MAC addresses. A router is needed to connect two different IP networks.[/b]
[b]Only network nodes with the same IP network address can communicate across a switch.
A switch can only deal with MAC addresses. A router is needed to connect two different IP networks.[/b]
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