A structured cabling
design that uses a physical hierarchical star topology offers a communications
transport system that can efficiently support all logical topologies (star,
bus, point-to-point, and ring). The guidelines presented here follow the general
recommendations set forth by the tia/eia-568a Commercial Building
Telecommunications Cabling Standard. The term "logical topology"
refers to the method by which different nodes in a network communicate with one
another. It involves protocols, access, and standards-based applications at the
electronic circuit level. "Physical topology" simply refers to the
physical arrangement of the cabling or cabling system by which nodes are
attached.
To be universal for all
applications, a structured cabling plan must support all logical topologies.
These topologies define the electronic connection of the system`s nodes. Fiber
applications can support point-to-point, star, ring, and bus logical
topologies.
All of the logical
topologies are easily implemented with a physical star cabling scheme as
recommended by the TIA/EIA-568A standard. Implementing logical point-to-point
and star topologies on a physical star is straightforward.
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