Cabling Standards; 100Base-Tx Cabling; Creating A Valid Network - 3Com NETBuilder SI Using Manual

166 A D: C
PPENDIX ONNECTORS AND

100BASE-TX Cabling

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
Table 22 lists supported 100BASE-TX cable types and emissions classes.
Table 22 Cable Support and Emissions Compliance
Cable Type
Category 5 UTP
Category 5 shielded UTP Category 5 RJ-45
* Shielding of all cable types should be terminated 360º at the cable plug.
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 SuperStack II
NETBuilder SI bridge/router, 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 SuperStack II NETBuilder SI bridge/router, 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.
Connectors
Category 5 RJ-45
(including jacks)
(including jacks)
Emissions Compliance
FCC Class A EN55022 Class B
VCCI Class A VDE Class B
Yes No
Yes Yes
*