Minicom DX System User manual

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5UM20121V26/06
DXSystem
UserGuide

DXSY
STEM
1
TableofContents
Welcome................................................................................................................4
1.Introduction.......................................................................................................5
1.1Features.......................................................................................................5
1.2Systemcomponents......................................................................................6
1.3Compatibility.................................................................................................6
2. Pre-installationguidelines.................................................................................6
2.1Avoidinggeneralrack mountingproblems......................................................6
3. DXsystemoutline.............................................................................................8
3.1TheDXCentral.............................................................................................8
3.1.1DXCentralLEDs..............................................................................................................8
3.2DXUserunits................................................................................................9
3.3RackmountingtheDXcentralandUserunits...............................................10
3.4RackmountingtheXRICCs.........................................................................10
3.5RackmountingtheRICCs...........................................................................11
4. ConnectingtheDXsystem..............................................................................11
4.1Connecting an optionallocalcomputertoaDXUser....................................12
4.2Connecting serverstotheDXCentral..........................................................12
4.3XRICC powersupply...................................................................................12
4.4Connecting aRICC orXRICC PS/2..............................................................13
4.5Connecting an XRICC SUN.........................................................................14
4.6Connecting an XRICC USB.........................................................................15
4.7Connecting an XRICC RS232......................................................................15
4.8Connecting theCAT5cables.......................................................................16
4.9Connecting theDXUsertoanRS232Terminal............................................16
4.9.1ConnectingtheRS232terminal.....................................................................................17
5. Powermanagement.........................................................................................17
6. ConnectingLegacyKVMswitches..................................................................18
7. Cascading DXCentral units............................................................................18
7.1Connecting withanEthernet Crossovercable..............................................19
7.2Connecting toanetworkhub/switch.............................................................19
7.3Configuring theprimaryand slaveunits........................................................20
7.4Changingthecascadestatus.......................................................................22
7.5Connecting theDXUserswhencascading...................................................22
7.6Connecting servers/devicesinacascadedsystem.......................................23
8. Poweringonthesystem..................................................................................23
9. Configurationwizard(non-DXcascadedsystem)...........................................23
10.Logging in......................................................................................................24
11. ConfiguringtheDXsystem...........................................................................24
11.1Autodetecting systemcomponents............................................................25

USERGUIDE
2
11.1.1Generalinformation aboutAutodetect........................................................................26
11.2Applying changes......................................................................................27
11.2.1Configuringindividual inputports.................................................................................28
11.3CascadedDXCentralunits........................................................................29
11.4CascadedLegacy switches........................................................................32
11.4.1AddingaLegacyswitch...............................................................................................33
11.4.2EditingaLegacyswitchtype........................................................................................35
11.4.3TheCascadeInputstab elements...............................................................................35
11.4.4Configuringtheserverports.........................................................................................37
11.4.5Deleting aLegacyswitch.............................................................................................39
11.5Configuring aPowermanagement device..................................................39
11.5.1AddinganewPowerprofile.........................................................................................40
11.5.2Configuringtheconnected servers..............................................................................41
11.6Othersettingstoconfigure.........................................................................42
11.6.1Admin(Username)Settings........................................................................................43
11.6.2Security.........................................................................................................................43
11.6.3IP/CascadeSettings.....................................................................................................44
11.6.4Extensions....................................................................................................................45
11.6.5TimeSettings................................................................................................................45
12. Creating/editingUsersandGroups...............................................................45
12.1Toolbarbuttons.........................................................................................47
12.2Creating Groups........................................................................................47
12.2.1Generalinformation tab elements...............................................................................48
12.2.2Access Rightstab.........................................................................................................48
12.2.3Defining thesameaccess rightsforall devices..........................................................49
12.3EditingGroupaccess rights.......................................................................49
12.4Creating Users..........................................................................................49
12.4.1EditingtheUserbox.....................................................................................................51
12.5Usersand Groups-Detailsview................................................................51
13. Arrangingdevices.........................................................................................51
13.1TheServerswindow..................................................................................52
13.1.1DeviceIcon appearance..............................................................................................52
13.2Creating anewfolder.................................................................................53
13.3Savingchanges.........................................................................................54
13.4Deletingandrenamingfolders...................................................................54
13.5Adding devicestoafolder..........................................................................54
13.6Servers/devicesdisplayoptions.................................................................54
13.7Accessing devices.....................................................................................55
13.7.1ReturningtotheDXwindow........................................................................................55
13.8Poweron/off,reboot..................................................................................56
14. Scanning agroup ofservers.........................................................................56
15. Adjusting thepicturequality.........................................................................57
16. Connect-Private...........................................................................................58
17. DisconnectUser............................................................................................58

DXSY
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18. Connectingtoalocalcomputer....................................................................58
19. UpdatingtheDXCentral................................................................................58
19.1SystemrequirementsfortheDXCentralUpdateprogram...........................58
19.2RunningtheDXCentralUpdate.................................................................59
19.2.1UpgradingfromV1.9toV2.0.......................................................................................59
19.2.2DXCentral Update.......................................................................................................60
20. UpdatingtheDXUserandXRICCS/RICCs....................................................61
20.1DDC buttons.............................................................................................63
21. Eventslog......................................................................................................63
21.1Configuring Log Traps...............................................................................64
21.2ClearingtheLog........................................................................................65
21.3SavingtheLog..........................................................................................65
22.Troubleshooting -ResettingtheDXCentral.................................................65
23. USB/SUN Combokeys.................................................................................66
24.Technical specifications................................................................................67
25.Terminalhotkeys...........................................................................................68
26. Userguidefeedback......................................................................................69

USERGUIDE
4
Welcome
Thank youforbuyingtheDX system. ThissystemisproducedbyMinicom
AdvancedSystemsLimited.
ThisdocumentprovidesinstallationandoperationinstructionsforMinicom’sDX
system. Itisintendedforsystemadministratorsand networkmanagers,and
assumesthatreadershavea generalunderstandingofnetworks, hardwareand
software.
Technicalprecautions
Thisequipmentgeneratesradiofrequencyenergyandifnotinstalledinaccordance
withthemanufacturer’sinstructions,maycauseradiofrequencyinterference.
ThisequipmentcomplieswithPart15,SubpartJoftheFCCrulesforaClassA
computingdevice. ThisequipmentalsocomplieswiththeClass Alimitsforradio
noiseemissionfromdigitalapparatussetoutintheRadioInterferenceRegulation
oftheCanadianDepartmentofCommunications. Theseaboverulesaredesignedto
providereasonableprotectionagainstsuchinterferencewhenoperatingthe
equipmentina commercialenvironment. If operationofthisequipmentina
residentialarea causesradiofrequencyinterference, theuser,and notMinicom
AdvancedSystemsLimited,willberesponsible.
Changesormodificationsmadetothisequipmentnotexpresslyapprovedby
MinicomAdvancedSystemsLimitedcouldvoidtheuser’sauthoritytooperatethe
equipment.
MinicomAdvancedSystemsLimitedassumesnoresponsibilityforany errorsthat
appearinthisdocument. Informationinthisdocumentissubjecttochangewithout
notice.
Nopartofthisdocumentmaybereproducedortransmittedinany formorbyany
means, electronicormechanical, forany purpose, withouttheexpress written
permissionofMinicomAdvancedSystemsLimited.
Trademarks
Alltrademarksand registeredtrademarksarethepropertyoftheirrespective
owners.
©2006MinicomAdvancedSystemsLimited. Allrightsreserved.

DXSY
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1. Introduction
TheDX systemfromMinicomisa superiorsolutionforcentralizedKVM&Serial
management.
TheDX systemcombinesthefollowingfourmajorfunctions:
·KVMswitchingand control
·Serialcontrol
·Powermanagement
·Usermanagement
TheDX unifiestheabovefunctionsusingAIM(AdvancedIntegrated
Management). AIMisaninnovativeembeddedGraphicalUserInterface(GUI) that
suppliesadvancedmanagementfunctionalityina hardware-onlybasedsolution.
AIMcombinesthemanagementofall theabovefourfunctionswithina single
intuitiveinterface, fortrulyunifiedadministration ofyourserverenvironment.
TheDX comesin2modelsfor4or8users. Userscanaccess andcontrolmultiple
multi-platformcomputersfromKeyboardVideoMouse(KVM)consoles. Youcan
connectup to32 devices-computers,Serialdevices, KVMswitchesormoreDX
boxes(forcascading)-toeithermodel.
1.1Features
·Non-blockingusercontrolof4/8users, forhundredsofservers
·Mixedmulti-platformsupport:PS/2,SUN, USBand RS232
·FlexibleremoteIP access:FittheIP mixtoyourneedsand addIP usersas
yourbusiness grows.
·Built-inlocalcomputeraccess ateveryuserstation.
·CAT5/6/7all-the-waytechnology, fromservertouser.

USERGUIDE
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1.2Systemcomponents
·DX Switch432 (4users)or832(8users)
·DX Users
·DX UserIP (hasit’sownGuide)
·XRemoteInterfaceConnectioncables(XRICCs)–PS/2,SUN, USB,
RS232
·RemoteInterfaceConnectioncables(RICC)–PS/2
·Cables-3in1CPUcable, RS232Serialcable, EthernetCrossovercable
·RackmountsfortheDX unitsand theXRICCs
·MinicomFlashUSBkey–containingInstallationandOperatingguides
and CentralunitfirmwareUpdateprogram
1.3Compatibility
TheDX iscompatiblewith:
·PS/2,SUNand USBcomputers/servers
·VGA, SVGA, orXGAmonitors
·Novell, LINUX, Windows, UNIXandothermajoroperatingsystems
2. Pre-installationguidelines
·Switchoff all computers/servers
·Placecablesawayfromfluorescentlights,airconditioners, and machinesthat
arelikelytogenerateelectricalnoise
·Themaximumdistancebetweeneachdevice(computer, KVMswitchesor
secondlevelDX Central)and theDX Centralis100m/330ft.Themaximum
distancebetweentheDX Centraland theDX Userisalso100m/330ft.
2.1Avoiding generalrack mounting problems
Elevatedoperatingambienttemperature
Theoperatingambienttemperatureoftherackenvironmentmaybegreaterthanthe
roomambientwheninstallingintoa closedormulti-unit rackassembly. Soinstall
theequipmentinanenvironmentcompatiblewiththemaximumratedambient
temperature.

DXSY
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Reducedairflow
Installtheequipmentina rackinsucha waythattheamountofairflowrequiredfor
safeoperationisnotcompromised. Leavea gapofatleast5cm/2”eachsideofthe
DX Centralunit.
Mechanicalloading
Mounttheequipmentintherackinsucha waythatahazardousconditionisnot
achievedduetounevenmechanicalloading.
Circuitoverloading
Whenconnectingtheequipmenttothesupplycircuit, considertheeffectthat
overloadingofcircuitsmighthaveon over-currentprotectionandsupplywiring.
Reliableearthingofrack-mountedequipmentshouldbemaintained. Giveattention
tosupplyconnectionsotherthandirectconnectionstothebranchcircuit(e.g. useof
powerstrips).

USERGUIDE
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3. DXsystemoutline
Figure1illustratesthebasicoutlineoftheDX system.ThefigureshowsDX Users
and devicesconnectedtoa DX Centralunit.
DX832Central
X-RICC X-RICC X-RICC
132
Computer
Tocomputers
Computer
MINICOM
Power
DX
User
User4
User1
MINICOM
Power
DX
User
User8
MINICOM
Power
DX
User
DXUserDXUserDXUser
Computer
PowerLink
MINICOMDX432
Central
Figure1DXsystemoutline
3.1TheDXCentral
Figure2illustratesthefrontpaneloftheDX 832 Centralunit. TheDX 432 Central
modelhasthesamefrontpanel.
PowerLink
MINICOM
DX832
Central
Figure2DX832 Centralfrontpanel
3.1.1DXCentralLEDs
TheLEDsonthefrontoftheDX Centralunitsareasfollows:
LEDFunction
PowerPowerindicator
LinkBlinkswhen there’sEthernet activity

DXSY
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ThefigurebelowillustratestherearpaneloftheDX 832 Centralunit. TheDX 432
Centralmodelisthesamebutwithonly4Userports.
Power
connector
RS232Service
port
Userports
POWER
100-250 VAC 50/60 Hz
www.minicom.com
Reset
button Ethernet
ETHERNET
SERIAL
SERVICEI
0
1234
18192017
SERVER
5678
22232421
1234
6785
9101112
26272825
13141516
30313229
Serverports
RS232Serial
port
USER
Figure3DX832 Centralunitrearpanel
3.2DXUserunits
Figure4illustratesthefrontpaneloftheDX Userunit.
MINICOMPower
DX
User
Figure4DXUserfrontpanel
ThefigurebelowillustratestherearpaneloftheDX Userunit.
SYSTEM
Power
connector
POWER
100-250 VAC50/60 Hz
www.minicom.com
I
0
Keyboard
Mouse
Monitor
Computer
Keyboardport
Computer
Mouseport
Computer
Videocard
USB LOCALCOMPUTER
TERMINAL
CONSOLECOMPUTER
USB
ports
RS232
Terminalport
RS232portto
Localcomputer
Figure5DXUserrearpanelports

USERGUIDE
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3.3Rackmounting theDXcentraland Userunits
UsetheL-shapedbracketsand screwsprovidedtomounttheDX unitsona server
rackasillustratedbelow.
Insert
screwsto
connectto
rack
Insertscrewstoconnect
toDXCentralsidepanel
POWER
100-250 VAC50/60Hz
www.minicom.com
ETHERNET
SERIAL
SERVICEI
0
1234
18192017
SERVER
5678
22232421
1234
6785
9101112
26272825
13141516
30313229
USER
Figure6Connecting theL-shaped bracket
3.4Rackmounting theXRICCs
YoucanattachtheXRICCstoaserverrackorcomputerusingtheVelcrostrips
provided. Orconnectitusingthebracketprovided.
Thefigurebelowillustratesthebracket. Usethescrewsthatcamewithrackto
connectthebrackettotherack. Oncesecured, cliptheXRICC intothebracket.
Insertscrewsthrough
2ofthe 3holesinthe
bracketand connect
toarack
Figure7Rackmounting theXRICC

DXSY
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3.5Rackmounting theRICCs
YoucanattachtheRICCstoa serverrackorcomputerusingtheVelcrostrips
provided. Orconnectitusingthebracketprovided.
Thefigurebelowillustratesthebracket.
Insertscrewsthrough
bracket andintothe
backof the RICC
Insert screwsthrough
bracket and intothe
backof theRICC
Insert screwsthrough
bracketand intothe
rack
Insertscrew through
bracket andintothe
backof acomputer
Figure8Rackmounting theRICC
4. ConnectingtheDXsystem
ConnecttheDX UserstotheDX CentralasillustratedinFigure9below.
Toconnecttheunits:
1.Connecta KVMconsoletotheDX User’sConsolekeyboardmonitorand
mouseports.
2.Connecta CAT5cabletotheDX User’sSystemportandtooneoftheDX
Central’sUserports.

USERGUIDE
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SD
P110
KB Mouse
100T
V i d e oSe r ia l A
Par al lel
S e r i a l B
Upto100M / 330ft
CAT5cable
3in 1CPUcable
DXCentral
DXUser
Optional local
computer
POWER
100-250VAC50/60Hz
www.minicom.com
ETHERNET
SERIAL
SERVICEI
0
1234
18192017
SERVER
5678
22232421
1234
6785
9101112
26272825
13141516
30313229
USER
SYSTEM
POWER
100-250 VAC50/60 Hz
www.minicom.com
I
0
USB LOCALCOMPUTER
TERMINAL
CONSOLECOMPUTER
Figure9Connecting aDXUserto theDXCentral
4.1Connecting anoptionallocalcomputertoaDXUser
AusercanworkontheDX systemjustwitha KVMconsole. Thereistheoptionto
connecta computertotheDX Userunit. Ausercanthenworklocallyonthis
computer.
Toconnecta localcomputer:
Connecta computertotheDX Userusingthe3in1CPUcable, seeFigure9.
1.Connecttheconnectorsofoneendofthe3in1CPUcabletotheKVM
ComputerportsoftheDX User.
2.Connecttheconnectorsofotherendofthe3in1CPUcabletotheKVMports
ofthecomputer.
4.2Connecting serverstotheDXCentral
YouuseRICCsPS/2orXRICCsand CAT5cablestoconnectservers/devicestothe
DX Central.Thereare4typesofXRICC:
PS/2, USB,SUNand RS232.
4.3XRICC powersupply
TheXRICCsPS/2and SUNdrawtheirpowerfromthecomputer’skeyboardport.
TheXRICC USBdrawsitspowerfromtheUSBport.TheXRICC RS232getsits
powereitherfroma PoweradapterortheUSBport.

DXSY
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Figure10 illustratesthedifferenttypesofXRICCsconnectedtotheDX Central.
HowtoconnectthedifferentXRICCsfollowsindetail below.
Keybd Mouse 100T
VideoSerialA
Parallel
PCI 33Mx32b
PCI 33Mx32b
PCI 33Mx32b
PCI33Mx32b
S erial B
NetServertc2100
SCSI
DXCentral
X-RICC PS/2
X-RICC USB
X-RICCSUN
CAT5cables
Upto100M/ 330ft
ToServer
ports
X-RICC RS232
POWER
100-250VAC 50/60 Hz
www.minicom.com
ETHERNET
SERIAL
SERVICE
I
0
1234
18192017
SERVER
5678
22232421
1234
6785
9101112
26272825
13141516
30313229
USER
Figure10 DXsystem connections
4.4Connecting aRICC orXRICC PS/2
Figure11 illustratestheconnections.
ToconnecttheRICC orXRICCPS/2:
1.ConnecttheScreenconnectortothecomputer’sVideocard.
2.ConnecttheKeyboardconnectortothecomputer’sKeyboardport.
3.ConnecttheMouseconnectortothecomputer’sMouseport.

USERGUIDE
14
ToKeyboardport
CAT5cabletoDXCentral
Serverport
ToMouseport
ToVideocard
Keybd
Mouse 100T
VideoSerial A
Parallel
Serial B
RICC /XRICC
PS/2
Figure11 RICC /XRICCPS/2
4.5Connecting anXRICC SUN
Figure12 illustratestheconnections.
ToconnecttheXRICC SUN:
1.ConnecttheScreenconnectortotheserver’sVideocard.
2.ConnecttheKeyboardconnectortotheserver’sKeyboardport.
ToKeyboardPortToVideo Card
CAT5cabletoDXCentral
Serverport X-RICC SUN
Figure12 XRICC SUN

DXSY
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4.6Connecting anXRICC USB
TheXRICC USBsupportsWindows98 SEand later,MAC, SUNand SGI.Figure
13 illustratestheconnections.
ToconnecttheXRICC USB:
1.ConnecttheScreenconnectortotheserver’sVideocard.
2.ConnecttheUSBconnectortotheserver’sUSBport.
ToUSB Port
ToVideoCard
CAT5cabletoDXCentral
Serverport X-RICC USB
Figure13 XRICCUSB
4.7Connecting anXRICC RS232
Figure14 illustratestheconnections.
ToconnecttheXRICC RS232:
1.ConnecttheRS232 connectortotheserver’sRS232port.
2.Forpowerconnecteither:
AUSBcabletotheXRICC and theserver’sUSBport.
Or
APoweradaptertotheXRICC.

USERGUIDE
16
ToUSB Port
(forpoweronly) ToRS232 Port
CAT5cabletoDXCentralServerport
X-RICCRS232
Connect USBcablefor
powerorconnect Power
adapter
USBcable
Figure14 XRICCRS232
4.8Connecting theCAT5cables
1.ConnectoneconnectortotheXRICCsRJ45port–seeFigure10.
2.ConnecttheotherconnectortooneoftheDX Central’sServerports.
3.Followtheabove2stepsforeachserver/device.
Note:YoucanturnonthedevicesafterconnectingtheXRICCstothemandbefore
connectingtotheDX Central. TheXRICC performsKB/Memulationthemoment
itconnectstothedeviceand thepoweristurnedon.
4.9Connecting theDXUsertoanRS232Terminal
WhenthereareXRICC RS232sintheDX system, youcancontroltheRS232
devicesthrough anRS232 terminalconnectedtotheDXUserunits.
Whena computerisconnectedtotheDX User, youcancontroltheRS232 servers
via theDX’sTerminalsoftwareORoptionalRS232terminal.

DXSY
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4.9.1Connecting theRS232 terminal
ConnecttheRS232 terminaltotheDX Userasillustratedinthefiguresbelow.
TO CENTRAL
POWER
100-250 VAC 50/60 Hz
ww w .mini c o m .co m
I
0
USB LOCALCOMPUTER
TERMINAL
CONSOLECOMPUTER
To
Terminal
port
Terminal
VT420
ContrastBright
digital
Login:admin
Password_|
Figure15 Connecting theRS232 terminal
ThetablebelowshowstheRS232 Serialcable9PIND-SUBMalepin-out.
PinSignal Description PinSignal Description
1CD CarrierDetect6DSRDataSet Ready
2RxDReceiveData7RTSRequesttoSend
3TxDTransmit Data8CTSCleartoSend
4DTRDataTerminalReady9RIRingIndicator
5GND SystemGround
5. Powermanagement
Youcanconnecta PowermanagementdevicetotheDXCentral;theDX Userscan
thenpowerdevicesonandoff.
ConnectthePowermanagementdevicetotheSerialportoftheDX Centralusing
theSerialcableprovidedwiththePowermanagementdevice.
ConnectthePowermanagementdevicetoeachdevicebyfollowing theinstructions
inthePowermanagementdeviceUserGuide.

USERGUIDE
18
6. ConnectingLegacyKVMswitches
YoucancascadeLegacyKVMswitchesbyconnectinganXRICCPS/2orRICC
PS/2totheswitch.
Tocascadea non-DX KVMswitch:
1.ConnectanXRICCPS/2orRICC PS/2totheUserportsoftheKVMswitch.
2.Connecta CAT5cabletotheServerportoftheDX Central.
3.ConnecttheotherendoftheCAT5cabletotheXRICC PS/2. Theconfiguration
process isexplainedatthebeginningoftheDX SystemOperatingGuide.
ToconnectdevicestotheKVMswitch, followtheconnectioninstructionsinthe
UserGuideoftheKVMswitch.
7. CascadingDXCentral units
Whenyouneedtoconnectmorethan32 severs/devicesyoucancascadetheDX
systembyaddingmoreDX Centrals.
ForDX systemswithonly1DX Central, skiptosection 8onpage23.
Ina cascadedscenario, theDX Centralscommunicatevia Ethernetusing TCP/IP
signals. Forthisyoumustassign IP addressestoeachDX Centraland provide
TCP/IPconnectivitybetweenthem. CascadedDX Centralsmustbeonthesame
subnettocommunicatewitheachother.
Forupto56 severs/devicesyoucanconnect2DX Centrals(8Usersmodel)with
thesuppliedEthernetCrossovercable. Tocascademorethan2DX Centrals, the
DX Centralsmustbeconnectedtoa networkhub/Ethernetswitch. Ethernet
connectivityisessentialfortheproperoperationofthesystemandisinadditionto
thededicatedCAT5cablesforKVMsignals. Sections 7.1and 7.2illustratethese
connections.
YoumustalsoconnectoneCAT5cableperDX UsertoaUserportofa secondary
levelDX Centraland a ServerportoftheprimaryDX Central-seeFigure16 and
Figure17 and section 7.5on page22.Thesecablesareusedtocarrythekeyboard,
mouseandvideosignalsfroma servertotheuserstation.
Whena userclicksontheicon ofa server, theprimaryDX Centralsendsa
commandtothesecondaryDX Centralvia theEthernetporttoroutetheKVM
signalstooneoftheavailableUserports.

DXSY
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7.1Connecting withanEthernetCrossovercable
Toconnecta secondarylevelDX CentralwithanEthernetCrossovercable:
ConnecttheEthernetCrossovercableconnectorstotheEthernetportsofthe2DX
Centralsunits, asillustratedinFigure16.
POWER
www.minicom.com
ETHERNET
SERIAL
SERVICEI
0
1234
18192017
SERVER
5678
22232421
1234
6785
9101112
26272825
13141516
30313229
USER
POWER
www.minicom.com
ETHERNET
SERIAL
SERVICE
I
0
1234
18192017
SERVER
5678
22232421
1234
6785
9101112
26272825
13141516
30313229
USER
DXCentral
- 1st level
DXCentral
- Secondarylevel
Cascade
ToUser
ports
ToServer
ports
Ethernet
Crossover
cable
CAT5cables
1foreachDXUserin
thesystem
Upto8for8x32
Upto4for4x32
To
Ethernet
ports
Figure16 CascadedDXCentral unitsconnected withaCrossovercable
ThetablebelowshowstheEthernetRJ45 Connectorpin-out.
1
8
PinAssignmentPinAssignment
1TX+5Not connected
2TX-6RX-
3RX+7Not connected
4Not connected 8Not connected
7.2Connecting toanetworkhub/switch
Toconnecttoa networkhub/switch:
ConnectEthernetStraightcablestotheEthernetportsoftheDX Centralsunits,as
illustratedinFigure17.