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Enterasys Networks 2G4082-25 Network Router User Manual

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Connecting to the Network

Matrix DFE-Platinum Series Installation Guide 3-7

Figure 3‐3showsconnectingatwistedpairsegmenttothe2G4082‐25module.Itisassumedthat

thechassispoweristurnedontoprovidepowertothemodule.RefertoFigure 3‐3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.

Figure 3-3 Connecting a Twisted Pair Segment to the DFE-Platinum Module

3. VerifythatalinkexistsbycheckingthattheportRX(Receive)LEDisON(flashingamber,

blinkinggreen,orsolidgreen).IftheRX

LEDisOFFandtheTX(Transmit)LEDisnot

blinkingamber,performthefollowingstepsuntilitison:

a. Toviewthereceiveandtransmitactivityonagroupofsegments,presstheGROUP

SELECTbutton(seeFigure 3‐3)tosteptothegroupofinterest(Groups1and2).

Each

timetheGROUPSELECTbuttonispressed,theGROUPLEDlightsupinsequence,

indicatingwhichGroupisselected.Thereceiveandtransmitactivityforthatgroupof

segmentsisthenindicatedbytheRXandTXLEDsforeachsegment.

b. VerifythatthecablingbeingusedisCategory5

UTPwithanimpedancebetween85and

111 ohms. Fortheporttooperateat100or1000Mbps,Category 5cablingmustbeused

andinstalledproperly.

c. Verifythatthedeviceattheotherendofthetwistedpairsegmentisonandproperly

connectedtothesegment.

d. VerifythattheRJ45

connectorsonthetwistedpairsegmenthavetheproperpinoutsand

checkthecableforcontinuity.Typically,acrossovercableisusedbetweenhubdevices.A

straight‐throughcableisusedtoconnectbetweenswitchesorhubdevicesandanend

user(computer).RefertoFigure 3‐4andFigure 3‐5for

four‐wireRJ45connections.Refer

toFigure 3‐6andFigure 3‐7foreight‐wireRJ45connections.

1 RJ45 connector 2 RJ45 port connector (port 1) 3 GROUP SELECT button

Â

COM

OFFLINE/

RESET

MGMT CPU

1

2

GROUP

SELECT

1X

11X 12X

G

R

O

U

P

1

GROUP

1

2

3

4

5

6

7

8

9

10

11

12

2G4082-25

Gb ENET

RX

TX

Á

À

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