LOCAL AREA NETWORK &
WIRING SCHEME
Two Local Area Network segments are implemented in the schools and the District Office. The transport speeds are Ethernet 10BASE-T, 100BASE-TX, and 100BASE-FX. Horizontal cabling is Category 5 Unshielded Twisted Pair and has the capacity to accommodate 100 Mbps. Vertical (Backbone) cabling shall be CAT5 UTP or fiber optic multi-mode cable. The cabling infrastructure complies with TIA/EIA-568-A and TIA/EIA-569 standards.
One LAN is designated for student / curriculum usage and the other is designated for administration usage. The LAN infrastructure is based on Ethernet LAN switching. This allows for a migration to faster speeds to the individual computers and between MDFs and IDFs without revamping the physical wiring scheme to accommodate future applications.
In each location a Main Distribution Facility room is established as the central point to which all LAN cabling is terminated and is also the point of presence for the Wide Area Network connection. All major electronic components for the network, such as the routers and LAN switches, are housed in this location. In some cases Intermediate Distribution Facilities are established, where horizontal cabling lengths exceed TIA/EIA-568-A recommended distances or where site conditions dictate. In such cases, the IDF services its geographical area and the IDF connects directly to the MDF in a STAR or EXTENDED STAR topology.
Each room requiring connection to network supports 24 workstations and is supplied with four CAT 5 UTP runs for data, with one run terminated at the teacher's workstation. These cable runs are terminated in the closest MDF or IDF. All CAT 5 UTP cable runs have been tested end-to-end for 100 Mbps bandwidth capacity. A single location in each room is designated as the wiring point of presence for that room. It consists of a lockable cabinet containing all cable terminations and electronic components; i.e. data hubs and switches. From this location data services distribute within the room via decorative wire molding. Network 1 allocates for general curriculum usage and network 2 allocates for administrative usage.
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