As Figure 1 shows, this functionality is represented by a switch, which enables efficient packet communication among the participating endpoints.
正如图1所示，这个在功能上表示为一个交换机，它支持参与其中的端点间的高效数据包通信。
Depending on the nature of the problem, it is sometimes good practice to run a tcpdump for a period of time while capturing packet information to a file using the -w switch.
根据问题的性质，有时候最好运行tcpdump一段时间，同时使用- w选项把数据包信息捕捉到文件中。
Optical label technology is an important technology to realize optical packet switch.
光标记技术是一种实现光分组交换的重要技术。
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