把一个大的网络分成许多子网络称为网络分段，可使用路由器、交换机和网桥来完成。
Breaking up a larger network into a number of smaller ones is called network segmentation, and it's accomplished using routers, switches, and Bridges.
相反，通过路由器进行网络分段，从而把数据包控制在一个比较小的范围之内，那么显然可以节省网络带宽，提高网络的性能。
Contrary, through the road by implement have network section, it is data bag control thereby in a less scope, can save network bandwidth apparently so, improve the performance of the network.
另外，采用路由器进行网络分段外，还有一个好的副作用，就是可以减轻网络带宽的压力。
Additional, use a means by implement outside having network section, still have a good side effect, it is the pressure that can ease network bandwidth.
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