The switch looks up the destination MAC address in its switching table, determines the outgoing interface port, and forwards the frame on to its destination through the designated switch port.
交换机在其交换表中查找目标MAC地址，确定交换机出端口，通过该端口将帧转发至目的地。
Cut-through switches do not perform any error checking of the frame because the switch looks only for the frame's destination MAC address and forwards the frame out the appropriate switch port.
直通式交换机不执行任何帧错误检查，它只查找帧的目的MAC地址，并从相应的交换机端口将帧转发。
One "port Security" feature lets you force your switch to allow only one MAC address for each physical port on the switch.
有一个“端口安全”功能是允许你强制使你的交换机在每个端口只允许(IP地址对应的)一个MAC地址通过。
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