Enterasys-networks Enterasys Gold Distributed Forwarding Engine 4H428 Manual de usuario descargar pdf (Pagina 42)

Connecting to the Network

3-12 Installation

3. Verifytha t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4).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.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.

Figure 3-4 Connecting a Twisted Pair Segment With RJ45 Connector

1 RJ45 connector 2 RJ45 port connector 3 GROUP SELECT button

11X

RESET

COM

CPU

MGMT

GROUP

SELECT

GROUP

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Enterasys-networks Enterasys Gold Distributed Forwarding Engine 4H428 Manual de usuario Pagina 42