Apply a router to build a network may use an ISP to provide home entrance line, then use the home entrance line as a router WAN or LAN home entrance line to build small site network.

路由器组建网络可以由因特网服务供应商提供的一条进户线，作为路由器的WAN或者LAN的进户线，组建路由器网络的小型场所的小型网络。

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In this scheme, the database nodes can be distributed in WAN or LAN and switched transparently to user applications and the system's disaster recovery time is short and the cost is low.

该方案中各节点数据库可以分布于wan或LAN中，对客户应用实现透明切换和数据的自动同步，系统恢复时延很短，开销较小。

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Routers are network nodes that link together different LAN or WAN segments, and carry out routing decisions for individual packets.

路由器是连接不同的LAN 或WAN 段的网络节点， 并为个体信息包执行路由决定。

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