A router may create or maintain a table of the available routes and their conditions and use this information along with distance and cost algorithms to determine the best route for a given packet.

路由器可以创建或维护一个包含可用路由及其状态的路由表，同时根据这些信息，利用距离和成本算法为数据包选择最佳路由。

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IP addresses route a packet across the whole global Internet, while MAC addresses help the packet make the small, local hop between hardware devices.

IP地址在整个全球因特网中路由数据包，而MAC地址则帮助数据包在两个硬件设备间做狭小的局部的传递。

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If the route table lookup shows that the packet is destined for a non-local subnet, the router forwards the packet to the next-hop router using the next-hop router's MAC address.

如果查找路由表显示包的目的地不在本地子网，路由器就利用下一跳路由器的MAC地址把包转发给下一跳路由器。

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Floyd founded Efficient in 1993 with the idea of using asynchronous transfer mode (ATM), an industrial-strength packet technology, to route data around local area networks.

FORBES: Above the fray

That means it is still impossible to send a packet of calls as photons from New York to Chicago, route some locally and send the rest on to Los Angeles--without first converting the signal into electrons.

FORBES: Hooked on photonics