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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The NAT router translates the inside global address of the packet to the inside local address and then checks the routing table before it sends it to the destination computer.

NAT路由器将这个数据包中的内部全局地址 (即其目的地址，译者) 转换成内部本地地址后再查看路由表。

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When a computer on the stub domain that has an inside local address wants to communicate outside the network, the packet goes to one of the NAT routers by way of normal routing to the default-gateway.

当一台在存根域 (网络) 中被分配了内部本地地址的计算机想要和外部网络通信时，数据包就会像通常一样被路由到其默认网关，此时网管充当 NAT 路由器功能。

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Birck takes some comfort from the fact that the bulk of Tellabs' flagship Titan 5500s manage local traffic, where the new world of packet switching is not yet a big threat.

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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.

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The Conservative AM added: "Mid Wales is suffering from a general wage packet downsizing which inevitably means a knock-on loss of spending power from the local economy and an end to any ideas of owning a house for many more local people".

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