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What is Routing?
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Routing across a WAN requires the addition of a network address field to each frame. Intermediate systems Use the network address like an area code to route the frame to the correct destination LAN. |
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The main devices used to provide wide area networking are; a bridge, a router, a brouter and a gateway. |
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Each LAN usually has one machine that acts as the entry point into the subnet upon receipt of a data frame; the network address is examined to see if it is one of the networks it is directly connected to. |
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if it is not, the frame is forwarded to another intermediate system in the subnet. |
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