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Network Devices

Network Devices
Device Description
Repeaters The repeater is to extend the length of a network beyond its normal cable lengths and works like an amplifier, increasing or boosting the signal to allow transmissions over longer distances. Repeaters are used to connect network segments and can also be used to connect segments that use different types of cable.
Bridges Bridges serve he same function as repeaters, but can also be used isolate network traffic or problems. Should any problems occur within one segment, the bridge will isolate that segment and not affect other segments on the network, thereby reducing the load on the network as a whole.
Routers Routers provide interconnectivity between dissimilar LANs. They work like repeaters but are able to select the best route from one LAN to another based on traffic load. Routers determine the flow of data based on such factors as lowest cost, minimum delay, minimum distance, and least congestion. Routers are generally used to create a WAN.
Gateways Gateways provide all the connectivity of routers but resides on a dedicated computer that acts as a translator between two completely dissimilar systems or applications. Because gateways are both translators and routers, they tend to be slower than bridges or routers. Gateways also provide access to special services such as e-mail or fax functions.

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