Enterasys-networks Enterasys Gold Distributed Forwarding Engine 4H428 Uživatelský manuál stáhnout pdf (Strana 48)

Connecting to the Network

3-18 Installation

4. 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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RJ21connectoronthetwistedpairsegmenthastheproperpinouts

andcheckthecableforcontinuity.

e. CheckthatthetwistedpairconnectionmeetsthespecificationsintheCabling

Guide.

Ifalinkisnotestablished,

contactEnterasysNetworks.Referto“GettingHelp”on

page xviiifordetails.

5. RepeatallthestepsaboveuntilallRJ21connectionsaremade.

Connecting Fiber-Optic Cables to 4H4284-49

Thissectionprovidestheprocedurestoconnectfiber‐opticcablesfromthe100BASE‐FX,

MT‐RJfrontpanelportsofthe4H4284‐49

tothenetworkorotherdevices.Eachfiber‐optic

linkconsistsoftwofiber‐opticstrandswithinthecable:Transmit(TX)andReceive(RX)

ThetransmitstrandfromaDFE‐Gold moduleportconnectstothereceiveportofafiber‐

optic100BASE‐FXEthernetdeviceattheotherendofthe

segment.Thereceivestrandof

theapplicableMT‐RJportontheDFE‐Gold moduleconnectstothetransmitportofthe

fiber‐optic100BASE‐FXEthernetdevice.

Toconnectafiber‐opticcablesegmenttothemodule,refertoFigure 3‐11and proceedas

follows:

1. Removetheprotectivecovers(notshown)from

theMT‐RJfrontpanelconnectorand

fromtheconnectorsoneachendofthecable.

Note: An odd number of crossovers (preferably one) must be maintained between devices

so that the transmit port is connected to the receive port of the other device and vice versa.

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