Premium Essay

Lan Backbone Design

In: Computers and Technology

Submitted By jtatum13
Words 416
Pages 2
Even with UTP copper having dominated premises cabling, fiber optics has become increasingly popular as computer network speeds have raised to the gigabit range and above. Many large corporate or industrial networks are using fiber optics for the LAN backbone cabling. Some have also adopted fiber to the desktop using a centralized fiber architecture which can be quite cost effective. Even fiber to the home architectures are being used in premises networks.
Fiber offers several advantages for LAN backbones. * The biggest advantage of optical fiber is the fact it can transport more information longer distances in less time than any other communications medium. * It is unaffected by the interference of electromagnetic radiation which makes it possible to transmit information and data through areas with too much interference for copper wiring with less noise and less error, for example in industrial networks in factories.
Fiber is smaller and lighter than copper wires which make it easier to fit in tight spaces or conduits. A properly designed centralized fiber optic network may save costs over copper wiring when the total cost of installation, support, regeneration, etc. are included.

Replacing UTP copper cables to the desktop with fiber optics was never cost effective, as each link requires converters to connect to the copper port on the PC to fiber and another on the hub/switch end unless dedicated hubs/switches with fiber ports are used.
Some users did pay that cost, as they expected to upgrade to speeds that would not run on UTP and did not want to install upgrades each time the network speed increased.
However, the solution to cost-effective fiber in the LAN is using centralized fiber (see right side of diagram above.) Since fiber supports longer links than copper, it's possible to build networks without telecom rooms for intermediate...

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