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86 A
PPENDIX
C: C
ONNECTORS AND
C
ABLES
Cabling Standards
Cabling should be installed in accordance with the following standards:
■
EIA/TIA-568 – Commercial building telecommunications wiring
standard
■
TSB-36 – Additional cable specifications for unshielded twisted pair
cables
■
IBM cabling guidelines
100BASE-TX Cabling Table 15 lists supported 100BASE-TX cable types and emissions classes.
The three types of Fast Ethernet interfaces are:
■
TX — Runs over Category 5 UTP and Category 5 shielded UTP.
■
FX — Runs over fiber. FX does not connect to the PathBuilder switch,
but you can use FX in your network between appropriate devices.
■
T4 — Runs over Category 3 or better UTP or shielded UTP. T4 does
not connect to the PathBuilder switch, but you can use T4 in your
network between appropriate devices.
Follow the steps in the next section to design a valid Fast Ethernet
network.
Creating a Valid Network
A Fast Ethernet network consists of collision domain diameters formed by
cabling and/or repeaters between two DTE devices. A DTE device is a
bridge/router, switch, or end station that contains a media access
controller (MAC). Repeaters usually do not contain a MAC.
Table 15 Cable Support and Emissions Compliance
Emissions Compliance *
* Shielding of all cable types should be terminated 360º at the cable plug.
Cable Type Connectors
FCC Class A
VCCI Class A EN55022 Class B
VDE Class B
Category 5 UTP Category 5 RJ-45
(including jacks) Yes No
Category 5 shielded UTP Category 5 RJ-45
(including jacks)
Yes Yes