Enterasys Networks 7S4280-19-SYS, 2S4082-25-SYS

Connecting to the Network

4-8 NAC Controller PEP Installation

Figure 4‐5showsconnectingatwistedpairsegmenttothe2S4082‐25module.Itisassumedthat

thechassispoweristurnedontoprovidepowertothemodule.RefertoFigure 4‐5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 4-5 Connecting a Twisted Pair Segment to the NAC Controller PEP

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 4‐5)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 4‐6andFigure 4‐7forfour‐wireRJ45connections.Refer

toFigure 4‐8andFigure 4‐9foreight‐wireRJ45connections.

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