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Enterasys Networks 2G4072-52 Switch User Manual

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Connecting to the Network

3-6 Installation

Figure 3-4 Connecting a Twisted Pair Segment to the 2G4072-52

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 3‐4)tosteptothegroupofinterest(Groups1

through3).Eachtimethebuttonispressed,theGROUPLEDlightsupin

sequence,indicatingthe selectedGroup.Receiveandtransmitactivityforthat

groupof

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

b. VerifythatcablingisCategory5UTPwithanimpedancebetween85and

111 ohms. Iftheportistooperateat100 Mbps,Category 5cablingmustbeused.

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 3‐5and

Figure 3‐6forfour‐wireRJ45connections.RefertoFigure 3‐7andFigure 3‐8for

eight‐wireRJ45connections.

1 RJ45 connector 2 RJ45 port connector 3 GROUP SELECT button

RESET

CONSOLE

CPU

PWR

GROUP

SELECT

GROUP 3

GROUP 2

GROUP 1

1

2

3

4

À ÂÁ

2

TX

RX

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