Netgear FS518T User Manual download pdf (Page 40)

cabling guidelines C-5

Using 1000BASE-T Gigabit Ethernet over Category 5 Cable

Overview

When using the new 1000BASE-T standard, the limitations of cable installations

and the steps necessary to ensure optimum performance must be considered.The

most important components in your cabling system are patch panel connections,

twists of the pairs at connector transition points,the jacket around the twisted pair

cable, bundling of multiple pairs on horizontal runs and punch down blocks.All of

these will affect the performance of 1000BASE-T technology if not correctly

implemented.The following sections are designed to act as a guide to correct cabling

for 1000BASE-T.

Cabling

The 1000BASE-T product is designed to operate over Category 5 cabling,but to

further enhance the operation,the cabling standards have been amended.The latest

standard is Category 5e,which defines a higher level of link performance than is

available with Category 5 cable.

If installing new cable,we recommend using Category 5e cable, since it costs the

same as Category 5 cable.If using the existing cable,be sure to have the cable

plant tested by a professional who can verify that it meets or exceeds either

ANSI/EIA/TIA-568-A:1995 or ISO/IEC 11801:1995 Category 5 specifications.

Length

The maximum distance limitation between two pieces of equipment is 100 m,as

per the original Ethernet specification.The end to end link is called the “channel.”

TSB-67 defines the “Basic Link”which is the portion of the link that is part of the

building infrastructure.This excludes patch and equipment cords.The maximum basic

link length is 295 feet (90 m).

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Netgear FS518T User Manual Page 40