
What'sthedifferencebetweenCAT5cableandCAT5ecable?
CAT5cableandCAT5ecablehaveseveraldifferences;themostimportantareasfollows:
* Network support‐CAT 5 cable will support 10/100 Ethernet. That is, Ethernet and Fast
Ethernet. CAT 5e cable will support Ethernet, Fast Ethernet, and Gigabit Ethernet. CAT 5e
cableiscompletelybackwards compatible,
andcanbeused inanyapplicationin whichyou
wouldnormallyuseCAT5cable.
* Lesscrosstalk‐Crosstalkis theelectrical interferencethatresults whenone wire'ssignal
affects another wire's signal. CAT 5e cable has been improved over CAT 5 cable in this
respect,andcrosstalkhasbeen
greatlyreduced.
*Bandwidth‐Thisisdirectlyrelatedtonetworksupport,inthe sensethatthebandwidthis
the information‐carrying capacity of a system. The greater the bandwidth, the greater the
information‐carrying capacity in a given period of time. CAT 5e cable is rated at 100 MHz,
and
itisthisincreasedbandwidth(comparedtoCAT5cable)thatallowsittosupportGigabit
Ethernet.
IfyouareunsurewhethertoorderCAT5ORCAT5e,itisrecommendedorderingCAT5e.
WhatisthedifferencebetweenCAT5eandCAT6cable?
Category 6 cable, commonly referred to as CAT 6, is a cable standard for Gigabit Ethernet
andothernetworkprotocolsthatisbackwardcompatiblewiththeCAT5/5eandCAT3cable
standards.CAT 6features more stringentspecificationsforcrosstalk andsystemnoise. The
cable standard provides performance of
up to 250 MHz and is suitable for 10BASE‐T /
100BASE‐TX and 1000BASE‐T / 1000BASE‐TX (Gigabit Ethernet). It is expected to suit the
10GBASE‐T (10GigabitEthernet)standard,althoughwithlimitations onlength ifunshielded
CAT6cableisused.CAT6cablescanbeidentifiedby
theprintingontheside.
Currently there is a great deal of confusion among Ethernet cable buyers concerning
whether to purchase CAT 5e, or to use CAT 6. Most of this confusion comes from a
misunderstanding by the buyer that buying CAT 6 cable will give them an "all gigabit"
network.Thisisnotthecase.Unlesseverysinglecomponentinthenetworkisgigabitrated
youwillneverhaveagigabitnetwork,becauseyournetworkwillalwaysrunatthespeedof
your slowest device.CAT 5ecableofgood quality can run near orat gigabitspeeds, itjust
cannotbe"certified"forthisuse.Bycomparison,CAT6isdesignedespeciallyforgigabituse,
andiscertifiedtooperateatsaidspeed.
TheCAT6cableisterminatedineithertheT568AschemeortheT568Bscheme.Aslongas
bothendsofacableareterminatedusing
thesamescheme,itdoesn'tmatterwhichscheme
isused;theyarebothstraightthrough(pin1to1,pin2to2,etc)andthepairingisthesame.
Mixing T568A‐terminated patch cords with T568B‐te rminated horizontal cables (or the
reverse)doesnotproduceproblemsinafacility.The
T568BSchemeisbyfarthemostwidely
usedmethodofterminatingpatchcables.
Kommentare zu diesen Handbüchern