Enterasys Matrix 7H4385-49 Installation Guide download pdf (Page 33)

Connecting to the Network

DFE-Platinum Series Hardware Installation Guide 3-9

Connecting to the Network

Thissectionprovidestheproceduresforconnectingunshieldedtwistedpair(UTP)segmentsfrom

thenetworkorotherdevicestothe7G4282‐49(“ConnectingUTPCables”onpage 3‐9).

Connecting UTP Cables

ThefixedRJ45frontpanelconnectionsofthe7G4202‐72and7G4282‐49are10/100/1000 Mbps

ports.Theseportshaveinternalcrossovers,andalsosupportautomatic‐polaritysensingwhen

configuredforautomatic‐negotiation.

Ifautomatic‐negotiationisnotactivatedonaport,useastraight‐throughcablewhenconnectinga

workstationto

theport.Whenconnectinganetworkingdevicetotheport,suchasabridge,

repeater,orrouter,useacrossovercable.

Ifaportissetforauto‐negotiation,automatic‐polaritysensingisalsoactivated.Automatic‐

polaritysensingeliminatestheneedforacrossovercable,regardlessiftheconnectionisto

another

networkdeviceoraworkstation.

Inthisprocedure,the 7G4202‐72isusedastheexampletoconnectatwistedpairsegmenttothe

module.Itisalsoassumedthatthechassispoweristurnedontoprovidepowertothemodule.

RefertoFigure 3‐4andproceedasfollows:

1. Ensure

thatthedeviceconnectedtotheotherendofthesegmentispoweredON.

2. ConnectthetwistedpairsegmenttothemodulebyinsertingtheRJ45connectoronthe

twistedpairsegmentintotheappropriateRJ45portconnector. 

Note: If the DFE-Platinum module is being installed in a network using Link Aggregation, there are

rules concerning network cables and port configurations that must be followed for Link Aggregation

to operate properly. Before connecting the cables, refer to the Enterasys Matrix DFE-Platinum

Series Configuration Guide for the configuration information. For details on how to obtain manuals,

refer to the “Related Documents” on page xii

Note: All RJ45 front panel ports on the 7G4202-72and7G4282-49 support Category 5 Unshielded

Twisted Pair (UTP) cabling with an impedance between 85 and 111 ohms. Category 3 cable may be

used if the connection is going to be used only for 10 Mbps.

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Enterasys Matrix 7H4385-49 Installation Guide Page 33