Enterasys csx200 Manual De Usuario

CSX200 Installation Guide

3-1

This chapter contains general networking guidelines for setting up a 10BASE-T Local Area 
Network using ports 1 through 12 on the CSX200. Review the requirements and specifications 
outlined in this chapter before attempting to install the CSX200.

Take care in planning and preparing the cabling and connections for your network. The quality of 
the connections, the length of cables, and other conditions of the installation play critical roles in 
determining the reliability of your network.

When connecting a 10BASE-T twisted pair segment to any of the CSX200 ports (Interfaces 1 
through 12), ensure the network meets the following requirements:

The IEEE 802.3 standard for 10BASE-T requires that 10BASE-T devices transmit 

over a 100 meter (328 foot) link on 22–24 AWG Unshielded Twisted Pair (UTP) wire. However, 
cable quality largely determines maximum link length. Lengths of up to 200 meters may be 
achieved if high quality, low attenuation cable is used. Cable delay limits the maximum link length 
to 200 meters.

Cabletron Systems 10BASE-T twisted pair products use twisted pair cable with 

75 to 165 ohms impedance. UTP cable typically has an impedance from 85 to 110 ohms. Shielded 
twisted pair cable, such as IBM Type 1 cable with an impedance of 150 ohms can also be used.

Losses introduced by connections at punch-down blocks and other equipment reduce 
total segment length. For each connector or patch panel in the link, subtract 12 meters 
from the total length of the cable.