Transition Networks SM24DPB User manual

Transition Networks SM24DPB Install Guide
33681 Rev. B https://www.transition.com Page 1of 24
SM24DPB
ManagedLayer2GigabitEthernetSwitch
(20)100/1000Base‐XSFPSlots+(4)100/1000Base‐XSFP/RJ‐45ComboPorts
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InstallGuide
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33681Rev.B
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Transition Networks SM24DPB Install Guide
33681 Rev. B https://www.transition.com Page 2of 24
SafetyWarningsandCautions
These products are not intended for use in life support products where failure of a product could reasonably be expected to
result in death or personal injury. Anyone using this product in such an application without express written consent of an officer
of Transition Networks does so at their own risk, and agrees to fully indemnify Transition Networks for any damages that may
result from such use or sale.
Attention: this product, like all electronic products, uses semiconductors that can be damaged by ESD (electrostatic
discharge). Always observe appropriate precautions when handling.
NOTE: Emphasizes important information or calls your attention to related features or instructions.
WARNING: Alerts you to a potential hazard that could cause personal injury.
CAUTION: Alerts you to a potentialhazard that could cause loss of data, or damage the system or equipment.
SM24DPB Managed Fiber Switch Install Guide - TN PN 33681 Rev. B
Record of Revisions
Rev Date Description of Changes
A 6/3/16 Initial release for software v6.46.
B 8/14/18 Update for FW v6.54.2925; update EMC and contact information.
Trademark notice: All trademarks and registered trademarks are the property of their respective owners. All other products or
service names used in this publication are for identification purposes only, and may be trademarks or registered trademarks of
their respective companies. All other trademarks or registered trademarks mentioned herein are the property of their
respective holders.
Copyright restrictions: © 2016-2018 Transition Networks, Inc. All rights reserved. No part of this work may be reproduced or
used in any form or by any means (graphic, electronic, or mechanical) without written permission from Transition Networks.
Address comments on this product or manual to:
Transition Networks Inc.
10900 Red Circle Drive, Minnetonka, MN 55343
tel: [phone] | toll free: 1.800.526.9267 | fax: [phone]
[email protected] | [email protected] | cust[email protected]

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Contents
SafetyWarningsandCautions...................................................................................................................................2
ComplianceandSafetyStatements.......................................................................................................................3
Overview....................................................................................................................................................................5
AboutThisGuide...................................................................................................................................................5
KeyFeatures..............................................................................................................................................................5
Benefits..................................................................................................................................................................5
Specifications.........................................................................................................................................................6
FrontPanel...............................................................................................................................................................10
PortandSystemStatusLEDs................................................................................................................................10
Installation...............................................................................................................................................................11
Unpacking............................................................................................................................................................11
SelectingaSite.....................................................................................................................................................11
Troubleshooting.......................................................................................................................................................18
RelatedManuals......................................................................................................................................................18
OptionalDCPowerSupply.......................................................................................................................................19
IndustrialPowerSupply25104(MeanWellSDR‐240‐48)...................................................................................19
25131–IndustrialDIN‐railMountPowerSupply(MEANWELLSDR‐75‐48)........................................................20
DCPowerSupplyWiring......................................................................................................................................21
DeclarationofConformity.......................................................................................................................................21
ContactUs...............................................................................................................................................................22
Warranty..................................................................................................................................................................22
Compliance and Safety Statements
FCC-CLASS A : ThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassAcomputingdevice
pursuanttoSubpartJofpart15ofFCCRules,whicharedesignedtoprovidereasonableprotectionagainstsuchinterference
whenoperatedinacommercialenvironment.Thisequipmentgenerates,uses,andcanradiateradiofrequencyenergyand,
ifnotinstalledandusedinaccordancewiththeinstructionmanual,maycauseharmfulinterferencetoradio
communications.Operationofthisequipmentinaresidentialareaislikelytocauseharmfulinterferenceinwhichcasethe
userwillberequiredtocorrecttheinterferenceathisownexpense.Youarecautionedthatchangesormodificationsnot
expresslyapprovedbythepartyresponsibleforcompliancecouldvoidyourauthoritytooperatetheequipment.
Youmayuseunshieldedtwisted‐pair(UTP)forRJ‐45connections‐Category3orbetterfor10Mbpsconnections,Category5
orbetterfor100Mbpsconnections,Category5,5e,or6for1000Mbpsconnections.Forfiberopticconnections,youmay
use50/125or62.5/125micronmultimodefiberor9/125micronsingle‐modefiber.
CE MARK / DECLARATION OF CONFORMANCE FOR EMI AND SAFETY (EEC) : Thisequipmenthasbeentestedand
foundtocomplywiththeprotectionrequirementsofEuropeanEmissionStandardEN55022/EN61000‐3andtheGeneric
EuropeanImmunityStandardEN55024. SM24DPBtestedandfoundtobeinconformitywithIEC60950‐1(ed.2),IEC60950‐
1(ed.2);am1,IEC60950‐1(ed.2);am2.AdditionallyevaluatedtoEN60950‐1:2006/A11:2009/A1:2010/A12:2011/A2:2013;
NationalDifferencesspecifiedintheCBTestReport.
EMC
European Standard EN 300 386 V1.6.1:2012, EN55032:2012
EN 61000-3-2:2006/A1:2009 and /A2:2009, EN 61000-3-3:2008
EN 55024:2010 (IEC 61000-4-2 Edition 2.0 2008-12,
IEC 61000-4-3 Edition 3.2 2010-04, IEC 6100-4-4 Edition 3.0 2012-04,
IEC 61000-4-5 Edition 2.0 2005-11, IEC 6100-4-6 Edition 3.0 2008-10,
IEC 61000-4-8 Edition 2.0 2009-09, IEC 61000-4-11 Edition 2.0 2004-03 and
Australian StandardAS/NZ CISPR 22:2009/A1:2010 ClassA

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 CAUTION :Circuitdevicesaresensitivetostaticelectricity,whichcandamagetheirdelicate
electronics.Dryweatherconditionsorwalkingacrossacarpetedfloormaycauseyoutoacquirea
staticelectricalcharge.
Toprotectyourdevice,always:
•Touchthemetalchassisofyourcomputertogroundthestaticelectricalchargebeforeyoupickupthecircuit
device.
•Pickupthedevicebyholdingitontheleftandrightedgesonly.
•Ifyouneedusingoutdoordeviceconnecttothisdevicewithcablethenyouneedtoadditionanarresteron
thecablebetweenoutdoordeviceandthisdevice.
Addition of an arrester between outdoor device and this switch
NOTE:Theswitchisindoordevice;ifitwillbeusedinoutdoorenvironmentorconnectswithsomeoutdoordevice,
thenitmustusealightningarrestertoprotecttheswitch.
WARNING:
Self‐demolitiononProductisstrictlyprohibited.Damagecausedbyself‐demolitionwillbechargedforrepairingfees.
Beforeinstallation,makesureinputpowersupplyandproductspecificationsarecompatibletoeachother.
Toreducetheriskofelectricshock.DisconnectallACorDCpowercordandRPScablestocompletelyremovepower
fromtheunit.
Beforeimporting/exportingconfigurationpleasemakesurethefirmwareversionisalwaysthesame.
Afterfirmwareupgrade,theswitchwillmovetheconfigurationautomaticallytothelatestfirmwareversion.
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Overview
TheSM24DPBL2+ManagedSwitchisanext‐generationFiberSwitchofferingfullsuiteofL2featuresincluding
advancedL3featuressuchasStaticRoutethatdeliversthebettercostperformanceandlowertotalcostof
ownershipinEnterprisenetworksorbackboneviafiberorcopperconnections.TheSM24DPBdelivers20GbE
SFPports,4ComboGbERJ45/SFPportsandDB9Consoleportwithbuilt‐inACandDCdualpowersupplies.
SM24DPBprovidesfrontaccesstoalldataandmanagementports,andacompactformfactorthatfacilitates
desktop,wall‐mount,orrack‐mountinstallations.TheSM24DPBisidealtodelivermanagementsimplicity,
betteruserexperience,andlowesttotalcostofownership.
About This Guide
Thisguidegivesspecificinformationonhowtooperateandusethemanagementfunctionsoftheswitch.The
guideisintendedforusebynetworkadministratorswhoareresponsibleforoperatingandmaintainingnetwork
equipment;consequently,itassumesabasicworkingknowledgeofgeneralswitchfunctions,theInternet
Protocol(IP),andSimpleNetworkManagementProtocol(SNMP).
KeyFeatures
L2+Managedfeaturesprovideeasiermanageability,robustsecurityandQoS.
AC/DCDualPowerSupply
DHCPServer
APR(AutoPowerReset)
IPv4/IPv6L3staticroute
IEEE802.3azEEEEnergyEfficientEthernetstandardforgreenEthernet
DMS(DeviceManagementSystem)
Benefits
WiththeAPRfeatureenabled,theswitchautomaticallypingsthedevice,andifthedevicefails,the
switchtogglesthePoEpower,automaticallyresettingthedevice.AutoPowerReseteliminatestheneed
foramanualresetofthedevice,savingtimeandmoney.Thesefeaturesmakeinstallationand
maintenancequickandeasy.
Feature‐richEthernetSwitchforEnterprise‐class:TheswitchdeliversadvancedfunctionalityinanL2+
managedswitchincludingLayer3staticroute,DHCPserver,IPv6support,LLDP,etc.Italsohas
comprehensivesecurityfeaturessuchasIPsourceguard,AccessControlListtoguardyournetwork
fromunauthorizedaccess.Ithelpsuserstobuildonthemarket‐leadingprice/performancewithL2+
ManagedGbEfiberswitch,andprovidessecure,reliableandeasytousefunctionsforenterpriseand
SMBdeployments.
LowerTotalCostofOwnership(TCO)withEnergy‐efficientDesign:Itisdesignedtohelpyoureduce
powerconsumptionandlowertheTCOfeatureslikeEnergyEfficientEthernet(IEEE802.3az).Itcanbe
usedforcustomerstobuildagreenEthernetnetworkingenvironment.
AC/DCDualPowerSupply:Powerfailoverwhenpowersuppliesareconnectedtodifferentcircuitsfor
reducednetworkoperatingrisk.
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Specifications
PortConfiguration
TotalPortsSFPs(100M/1G)Uplinks(100M/1G) Console
24204RJ45/SFPCombo DB9
HardwarePerformance
ForwardingCapacitySwitchingCapacity MacTable JumboFrames
35.712Mpps48Gbps32K10056Bytes
EnvironmentalRange
OperatingTemperatureStorageTemperature Altitude
32to140deg.Fahrenheit
0to60deg.Centigrade
‐40to185deg.Fahrenheit
‐40to85deg.Centigrade
<10000Feet
<3000Meters
Dimension,Weights,Humidity
Dimensions(WxHxD)Weight OperatingHumidity
442x44x211Millimeters
17.4x1.73x8.31Inches
3.1Kilograms
6.8Pounds 10%to90%non‐condensing
VoltageandFrequency
InputVoltageandFrequency
ACVoltage100‐240VAC
ACFrequency50‐60Hz
DCVoltage24‐72VDC
Certifications
ElectromagneticEmissions(EMC)
CE,FCCPart15ClassA
SoftwareFeatures
Layer2Switching
SpanningTreeProtocol(STP)
StandardSpanningTree802.1d
RapidSpanningTree(RSTP)802.1w
MultipleSpanningTree(MSTP)802.1s
Trunking
LinkAggregationControlProtocol(LACP)IEEE802.3ad
Upto26groups
Upto4portspergroup
VLAN
Supportsupto4KVLANssimultaneously(outof4096VLANIDs)
Port‐basedVLAN
802.1Qtag‐basedVLAN
MAC‐basedVLAN
ManagementVLAN
PrivateVLANEdge(PVE)

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Q‐in‐Q(doubletag)VLAN
VoiceVLAN
GARPVLANRegistrationProtocol(GVRP)
DHCPRelayRelayofDHCPtraffictoDHCPserverindifferentVLAN.
WorkswithDHCPOption82
IGMPv1/v2/v3SnoopingIGMPlimitsbandwidth‐intensivemulticasttraffictoonlytherequesters. Supports
1024multicastgroups
IGMPQuerierIGMPquerierisusedtosupportaLayer2multicastdomainofsnoopingswitchesin
theabsenceofamulticastrouter
IGMPProxyIGMPsnoopingwithproxyreportingorreportsuppressionactivelyfiltersIGMP
packetsinordertoreduceloadonthemulticastrouter
MLDv1/v2SnoopingDeliversIPv6multicastpacketsonlytotherequiredreceivers
Layer2Switching
IPv4StaticRoutingIPv4Unicast:Staticrouting
IPv6StaticRoutingIPv6Unicast:Staticrouting
Security
SecureShell(SSH)SSHsecuresTelnettrafficinoroutoftheswitch,SSHv1andv2aresupported
SecureSocketsLayer(SSL)SSLencryptsthehttptraffic,allowingadvancedsecureaccesstothebrowser‐based
managementGUIintheswitch
IEEE802.1X
IEEE802.1X:RADIUSauthentication,authorizationandaccounting,MD5hash,
guestVLAN,single/multiplehostmodeandsingle/multiplesessions
SupportsIGMP‐RADIUSbased802.1X
DynamicVLANassignment
Layer2Isolation
PrivateVLANEdge
PVE(alsoknownasprotectedports)providesL2isolationbetweenclientsin the
sameVLAN.Supportsmultipleuplinks
PortSecurityLocksMACaddressestoports,andlimitsthenumberoflearnedMACaddress
IPSourceGuardPreventsillegalIPaddressfromaccessingtospecificportintheswitch
RADIUS/TACACS+SupportsRADIUSandTACACS+authentication.Switchasaclient
StormControlPreventstrafficonaLANfrombeingdisruptedbyabroadcast,multicast,or unicast
stormonaport
DHCPSnoopingAfeatureactsasafirewallbetweenuntrustedhostsandtrustedDHCPservers
ACLs
Supportsupto512entries.Droporratelimitationbasedon:
SourceanddestinationMAC,VLANIDorIPaddress,protocol,port,
Differentiatedservicescodepoint(DSCP)/IPprecedence
TCP/UDPsourceanddestinationports
802.1ppriority
Ethernettype
InternetControlMessageProtocol(ICMP)packets
TCPflag
QualityofService
HardwareQueueSupports8hardwarequeues
SchedulingStrictpriorityandweightedround‐robin(WRR)
QueueassignmentbasedonDSCPandclassofservice
Classification
Portbased
802.1pVLANprioritybased
IPv4/IPv6precedence/DSCPbased
DifferentiatedServices(DiffServ)
Classificationandre‐markingACLs

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RateLimiting
Ingresspolicer
Egressshapingandratecontrol
Perport
Management
DHCPServerSupportDHCPservertoassignIPtoDHCPclients
RemoteMonitoring(RMON)EmbeddedRMONagentsupportsRMONgroups1,2,3,9 (history,statistics, alarms,
andevents)forenhancedtrafficmanagement,monitoringandanalysis
PortMirroring
Trafficonaportcanbemirroredtoanotherportforanalysiswithanetwork
analyzerorRMONprobe.UptoN‐1(NisSwitch’sPorts)portscanbemirroredto
singledestinationport.Asinglesessionissupported.
UPnPTheUniversalPlugandPlayForum,anindustrygroupofcompaniesworkingto
enabledevice‐to‐deviceinteroperabilitybypromotingUniversalPlugandPlay.
sFlow
Theindustry standardformonitoringhighspeedswitchednetworks.Itgives
completevisibilityintotheuseofnetworksenablingperformanceoptimization,
accounting/billingforusage,anddefenseagainstsecuritythreats
IEEE802.1ab(LLDP)
Usedbynetworkdevicesforadvertisingtheiridentities,capabilities,and
neighborsonanIEEE802ablocalareanetwork
SupportLLDP‐MEDextensions
WebGUIInterfaceBuilt‐inswitchconfigurationutilityforbrowser‐baseddeviceconfiguration
CLI(CommandLineInterface) Foruserstoconfigure/manageswitchesincommandlinemodes
DualImageIndependentprimaryandsecondaryimagesforbackupwhileupgrading
SNMPSNMPversion1,2cand3withsupportfortraps,andSNMPversion3
user‐basedsecuritymodel(USM)
FirmwareUpgradeWebbrowserupgrade(HTTP/HTTPs)andTFTP
Upgradethroughconsoleportaswell
NTPNetworkTimeProtocol(NTP)isanetworkingprotocolforclocksynchronization
betweencomputersystemsoverpacket‐switchednetworks
OtherManagement
HTTP/HTTPs;SSH
DHCPClient/DHCPv6Client
CableDiagnostics
Ping/Traceroute
Syslog
TelnetClient
IPv6Management
SwitchArchitecture
Theswitchperformsawire‐speed,non‐blockingswitchingfabric.Thisallowswire‐speedtransportofmultiple
packetsatlowlatencyonallportssimultaneously.Theswitchalsofeaturesfull‐duplexcapabilityonallports,
whicheffectivelydoublesthebandwidthofeachconnection.
Thisswitchusesstore‐and‐forwardtechnologytoensuremaximumdataintegrity.Withthistechnology,the
entirepacketmustbereceivedintoabufferandcheckedforvaliditybeforebeingforwarded.Thisprevents
errorsfrombeingpropagatedthroughoutthenetwork.
NetworkManagementOptions
TheswitchcanbemanagedoverthenetworkwithawebbrowserorTelnetapplication.Theswitchincludesa
built‐innetworkmanagementagentthatallowsittobemanagedin‐bandusingSNMPorRMON(Groups1,2,3,
9)protocols.

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HardwareDescription
1000BASE‐TPorts:Theswitchcontains10/100/1000BASE‐TRJ‐45ports.AllRJ‐45portssupportautomatic
MDI/MDI‐Xoperation,auto‐negotiationandIEEE802.3xauto‐negotiationofflowcontrol,sotheoptimumdata
rateandtransmissioncanbeselectedautomatically.
SFPTransceiverSlots:TheswitchsupportstheSmallFormFactorPluggable(SFP)transceiverslotsport1toport
24,ports21to24aresharedwithRJ‐45(ports21‐24arecombointerfaceRJ45/SFP).Inthedefault
configuration,ifanSFPtransceiver(purchasedseparately)isinstalledinaslotandhasavalidlinkontheport,
theassociatedRJ‐45portisdisabled.


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FrontPanel

Port and System Status LEDs
LED:P1‐P24SFPLink/Act/Speed
Condition:Green/Amber
Status:LightswhenFiberconnectionwithremotedeviceisgood.Blinkswhenanytrafficispresent.Thelightis
greenwhenlinkingupat1000Mbps.ThelightisAmberwhenlinkingupat100Mbps.
LED:P21‐P24TPLink/Act/Speed
Condition:Green/Amber
Status:Blinkswhenanytrafficispresent.Thelightisgreenwhenlinkingup10/1000Mbps.ThelightisAmber
whenlinkingup100Mbps.
SystemLED:PWRAC
Condition:Green
Status:LightswhenpoweronfromACsource.
SystemLED:PWRDC
Condition:Green
Status:LightswhenpoweronfromDCsource.
SystemLED:SYS
Condition:Green
Status:Blinkingwhensystemisbooting;litwhensystemiscoming
up.
SystemLED:ALM(Alarm)
Condition:Red
Status:Alwaysoff;untilanymessageaboutsystemerrorlightstheALMLED.
RST(Reset)button:pushtoresettheSM24DPB;requiresare‐login.


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PowerSupplySockets:Therearedualpowerinputsonthefrontpaneloftheswitchforpowerredundancy
requirement,theSM24DPBswitchhas100~240VACpowersocketforACpowerInputand‐36VDC~‐48VDC
powerinputviaterminalblock.

Installation
Unpacking
Verifythatyouhavereceivedthepackingitems.
□OneSM24DPBGbEFiberManagedSwitch
□Fouradhesiverubberfeet
□MountingAccessory(for19”RackShelf)
□OneprintedQuickStartGuide
□ACPowerCord
□RS232DB9toDB9Cable
AnoptionalDCPowerSupplymaybeincluded.Contactyoursalesrepresentativeifanyitemsaremissingor
damaged.Savethepackagingforpossiblefutureuse.
Selecting a Site
TheSwitchcanbemountedinastandard19‐inchequipmentrack(viaRackmountKit).Besuretofollowthe
guidelinesbelowwhenchoosingalocation.
◆ Thesiteshould:
 Beatthecenterofallthedevicesyouwanttolinkandnearapoweroutlet.
 Beabletomaintainitstemperaturewithin‐20to60°Canditshumiditywithin5%to95%,non‐
condensing.
 Beaccessibleforinstalling,cablingandmaintainingthedevices.
 AllowthestatusLEDstobeclearlyvisible.
◆ Makesurethetwisted‐pairEthernetcableisalwaysroutedawayfrompowerlines,radios,transmittersor
anyotherelectricalinterference.
MakesurethatSM24DPBSeriesSwitchisconnectedtoaseparategroundedpoweroutlet.

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Ethernet Cabling
Toensureproperoperationwheninstallingtheswitchintoanetwork,makesurethatthecurrentcablesare
suitablefor100BASE‐TXor1000BASE‐Toperation.Checkthefollowingcriteriaagainstthecurrentinstallation
ofyournetwork:
◆ Cabletype:Unshieldedtwistedpair(UTP)orshieldedtwistedpair(STP)cablewithRJ‐45connectors;
Category5orCategory5ewithmaximumlengthof100metersisrecommend100BASE‐TX,andCategory
5eor6withmaximumlengthof100metersisrecommendfor1000BASE‐T.
◆ Protectionfromradiofrequencyinterferenceemissions.
◆ Electricalsurgesuppression.
◆ Separationofelectricalwiresanddatabasednetworkwiring.
◆ Safeconnectionswithnodamagedcables,connectorsorshields.
◆ RJ-45 Connections SFP Transceiver
◆

WARNING:SFPsandmini‐GBICsareClass1laserdevices.Avoiddirecteyeexposuretothebeamcoming
fromthetransmitport.

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Mounting
Theswitchcanbemountedinastandard19‐inchequipmentrackoronadesktoporshelf.Mountinginstructions
foreachtypeisprovidedbelow.
RackMounting(Optional):
Beforerackmountingtheswitch,pleasepayattentiontothefollowingfactors:
Temperature:Sincethetemperaturewithinarackassemblymaybehigherthantheambientroom
temperature,checkthattherack‐environmenttemperatureiswithinthespecifiedoperatingtemperature
range(‐20to60°C).
MechanicalLoading:Donotplaceanyequipmentontopofarack‐mountedunit.
CircuitOverloading:Besurethatthesupplycircuittotherackassemblyisnotoverloaded.
Grounding:Rack‐mountedequipmentshouldbeproperlygrounded.
Step1.AttachthebracketstothedeviceusingthescrewsprovidedintheMountingAccessory.
Step2.Mountthedeviceintherack(viaRack‐Mountkit),usingfourrack‐mountingscrews(notprovided).
Besuretosecurethelowerrack‐mountingscrewsfirsttopreventthebracketsbeingbentbytheweightofthe
switch.

Step3.Ifinstallingasingleswitchonly,turnto“ConnectingtoPower”onpage15.
Step4.Ifinstallingmultipleswitches,mountthemintherack,onebelowtheother,inanyorder.


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DesktoporShelfMounting
Step1.Attachthefouradhesiverubberfeettothebottomofthefirstswitch.

Step2.SetthedeviceonaflatsurfacenearanACpowersource,makingsurethereareatleasttwoinchesof
spaceonallsidesforproperairflow.
Step3.Ifinstallingasingleswitchonly,goto“ConnectingtoPower”onpage15.
Step4.Ifinstallingmultipleswitches,attachfouradhesivefeettoeachone.Placeeachdevicesquarelyontopof
theonebelow,inanyorder.

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Installing an Optional SFP Transceiver
Youcaninstallorremoveamini‐GBICSFPfromamini‐GBICslotwithouthavingtopowerofftheswitch.Useonly
Manufacturemini‐GBIC.
NOTE:
Themini‐GBICslotsaresharedwiththefour10/100/1000Base‐TRJ‐45ports.Ifamini‐GBICisinstalledina
slot,theassociatedRJ‐45portisdisabledandcannotbeused.SFPtransceiversarenotprovidedinthe
switchpackage.
Themini‐GBICportsoperateonlyatfullduplex.Halfduplexoperationisnotsupported.
EnsurethenetworkcableisNOTconnectedwhenyouinstallorremoveamini‐GBIC.
InsertinganSFPTransceiverintoaSlot
Step1.Considernetworkandcablingrequirementstoselectan
appropriateSFPtransceivertype.
Step2.Insertthetransceiverwiththeopticalconnectorfacingoutward
andtheslotconnectorfacingdown.NotethatSFPtransceiversarekeyed
sotheycanonlybeinstalledinoneorientation.
Step3.SlidetheSFPtransceiverintotheslotuntilitclicksintoplace.
Connecting to Power
Make cable connections before connecting Power.
ConnectingtoACPowerSource
YoucanplugorremoveanACpowercordthroughtheACsocket
fromACpowersource.
Step1.InserttheACpowercorddirectlyintotheACsocket
locatedatthefrontoftheswitch.
Step2.PlugtheotherendofthepowercordintoanACpower
source.
Step3.Checkthefront‐panelLEDsasthedeviceispoweredontobesurethePOWERLEDislit.Ifnot,checkthat
thepowercableiscorrectlypluggedin.
ConnectingtoDCPowerSource
Step1.InserttheDCcableplugdirectlyintotheDCterminal
blocklocatedatthefrontoftheswitch.
Step2.PlugtheotherendofthecableintoanexternalDC
powersource.
Step3.Checkthefront‐panelLEDsasthedeviceispoweredon
tobesurethePOWERLEDislit.Ifnot,checkthatthepowercableiscorrectlypluggedin.
FormoreinformationseeOptionalDCPowerSupplyonpage19.
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SerialCableWiring(crosscableforconsoleportnotsupported)

Switch’s8‐PinSerialPortPC’s9‐PinDTEPort

FiberOpticSFPDevices
AnoptionalGigabitSFPtransceivercanbeusedforabackboneconnectionbetweenswitches,orforconnecting
toahigh‐speedserver.Eachsingle‐modefiberportrequires9/125micronsingle‐modefiberopticcablewithan
LCconnectoratbothends.Eachmultimodefiberopticportrequires50/125or62.5/125micronmultimodefiber
opticcablingwithanLCconnectoratbothends.
WARNING:Thisswitchuseslaserstotransmitsignalsoverfiberopticcable.Thelasersareinherentlyeye
safeinnormaloperation.However,usershouldneverlookdirectlyatatransmitportwhenitispoweredon.
WARNING:WhenselectingafiberSFPdevice,consideringsafety,pleasemakesurethatitcanfunctionat
atemperaturethatisnotlessthantherecommendedmaximumoperationaltemperatureoftheproduct.You
mustalsouseanapprovedLaserSFPtransceiver.
Step1.RemoveandkeeptheLCport’srubberplug.Whennotconnectedtoafibercable,therubberplugshould
bereplacedtoprotecttheoptics.
Step2.Checkthatthefiberterminatorsareclean.Youcancleanthecableplugsbywipingthemgentlywitha
cleantissueorcottonballmoistenedwithalittleethanol.Dirtyfiberterminatorsonfiberopticcableswillimpair
thequalityofthelighttransmittedthroughthecableandleadtodegradedperformanceontheport.
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Step3.ConnectoneendofthecabletotheLCportontheswitchandtheotherendtotheLCportontheother
device.SinceLCconnectorsarekeyed,thecablecanbeattachedinonlyoneorientation.

Step4.Asaconnectionismade,checktheLinkLEDontheswitchcorrespondingtotheporttobesurethatthe
connectionisvalid.
Thefiberopticportsoperateat1Gbps.ThemaximumlengthforfiberopticcableoperatingatGigabitspeedwill
dependonthefibertypeaslistedunder“1000MbpsGigabitEthernetCollisionDomain”.
ConnectivityRules
Whenaddinghubstoyournetwork,pleasenotethatbecauseswitchesbreakupthepathforconnecteddevices
intoseparatecollisiondomains,youshouldnotincludetheswitchorconnectedcablinginyourcalculationsfor
cascadelengthinvolvingotherdevices.
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Troubleshooting
Mostproblemsarecausedbythefollowingsituations.Checkfortheseitemsfirstwhenstartingyour
troubleshooting:

1. Connectingtodevicesthathaveafixedfull‐duplexconfiguration.Makesurealldevicesconnectedtothe
SM16TAT2DPASwitchdevicesareconfiguredtoautonegotiate,orareconfiguredtoconnectathalfduplex.
2. Faultyorloosecables.Lookforlooseorobviouslyfaultyconnections.IftheyappeartobeOK,makesurethe
connectionsaresnug.Ifthatdoesnotcorrecttheproblem,tryadifferentcable.
3. Non‐standardcables.Non‐standardandmiswiredcablesmaycausenetworkcollisionsandothernetwork
problems,andcanseriouslyimpairnetworkperformance.Useanewcorrectly‐wiredcable.ACategory5
cabletesterisarecommendedtoolforevery100Base‐TXand1000Base‐Tnetworkinstallation.
4. ImproperNetworkTopologies.Itisimportanttomakesureyouhaveavalidnetworktopology.Ifyouno
longerexperiencetheproblems,thenewtopologyisprobablyatfault.Inaddition,youshouldmakesure
thatyournetworktopologycontainsnodatapathloops.
5. Checktheportconfiguration.AportonyourSwitchmaynotbeoperatingasyouexpectbecauseithasbeen
putintoa“blocking”statebySpanningTree,GVRP(automaticVLANs),orLACP(automatictrunking).(Note
thatthenormaloperationoftheSpanningTree,GVRP,andLACPfeaturesmayputtheportinablocking
state.)Or,theportjustmayhavebeenconfiguredasdisabledthroughsoftware.
6. SYSLEDisOff.Checkconnectionsbetweentheswitch,thepowercordandthewalloutlet.ContactTech
Supportforassistance.SeeContactUsbelow.
7. LinkLEDisOff.Verifythattheswitchandattacheddevicearepoweredon.Besurethecableispluggedinto
theswitchandcorrespondingdevice.Iftheswitchisinstalledinarack,checktheconnectionstothepunch‐
downblockandpatchpanel.Verifythatthepropercabletypeisusedanditslengthdoesnotexceed
specifiedlimits.Checktheadapterontheattacheddeviceandcableconnectionsforpossibledefects.
Replacethedefectiveadapterorcableifnecessary.
8. ContactTransitionNetworksTechSupportforassistance.SeeContactUsbelow.
RelatedManuals
Thefollowingmanualsdetailrelatedswitchaspects:
•SM24DPBQuickStartGuide,33680
•SM24DPBWebUserGuide,33682
•SM24DPBCLIReference,33683
•SFPmanuals(modelspecific)
•ReleaseNotes(versionspecific)
Also,aspartoftheswitchsoftware,thereisanonlineweb‐basedhelpthatdescribesthemanagementrelated
features.
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OptionalDCPowerSupply
TheSM24DPBprovidesdualpowerinputsonthefrontpaneloftheswitchforpowerredundancyrequirement.
TheSM24DPBswitchhas100~240VACpowersocketforACpowerInputand‐36VDC~‐48VDCpowerinputvia
terminalblock.
WiththeAC/DCDualPowerSupply,powerfailoveroccurswhenpowersuppliesareconnectedtodifferent
circuitsforreducednetworkoperatingrisk.

SeveralpowersupplymodelsareavailablefromTransitionNetworks.Warning:Youmustuseanisolatedpower
supplyinorderforTransitionNetworkstohonorthewarranty.ThepowersuppliesthatTransitionNetworks
makesavailableare:
□25105‐MeanWellSDR‐120‐48
□25131–MEANWELLSDR‐75‐48
IndustrialPowerSupply25104(MeanWellSDR‐240‐48)
INPUT:100‐240VAC2.6A50/60Hz
OUTPUT:48V‐5A
“Usecopperwireonly”
“Maximumsurroundingairtemperature:60°C”
“Instructionsforinstallationinapollutiondegree2environment”
TerminalTorque:7Lb‐in(DCconnectionsattopofPS).
TerminalTorque:4.4Lb‐in(ACconnectionsatbottomofPS).
+VADJ:accesstosmallPhillipsscrew;turnclockwisetoincreasevoltage.
Adjustable,48‐55V.
DCOKLED:lightstoindicateaDCOKcondition.
WithboththeACandDC(25105)PowerSuppliesconnectedboththeCLIandthe
webGUIshow:ACPowerOn11.95V;DCPowerOn11.86V.Withjustthe
DCsupplyconnectedtheALM(Alarm)LEDlightsinRed.
SeetheSM24DPBQuickStartGuideforPowerRequirements,Isolation,RedundantPowerInputs,Power
Connection,and/orChassisGroundinformation.
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25131–IndustrialDIN‐railMountPowerSupply(MEANWELLSDR‐75‐48)
Seetheonlineproductpageformoreinformation.
Features
Auto‐Negotiation
VariableACinputrange
ProtectedagainstOverload,OverVoltage,andOverTemperature
Convectionaircooling
DINRailmountable
UL508approved
RoHScompliant
MTBF481.9Khrs

Specifications
Output
OutputVoltage:48VDC
CurrentRating:1.6A
PowerRating:76.8Watts
Ripple&NoiseMax:120mVp‐p
VoltageRange:48~55VDC
VoltageTolerance:±1.0%
LineRegulation:±0.5%
LoadRegulation:±1.0%
Input
VoltageRangeSwitchSelectable:88~264VAC,
124~370VDC
FrequencyRange:47~63Hz
Efficiency:90%
Protection
Overload:110~150%
Overvoltage:56~65.8V
Dimensions:Width:1.26”[32mm]xDepth:4.02”[102mm]xHeight:4.93”[125.2mm]
Environment
Operating:‐30°Cto+70°C
Storage:‐40°Cto+85°C
Humidity:20%to95%(non‐condensing)
Weight1.12lbs.[0.51kg]
Compliance
Safety:UL508,TUVEN60950‐1,IEC60068‐2‐6(Vibration);EN55022,CISPR22,EN61204‐3ClassB,
EN61000‐3‐2,EN61000‐3‐3,EN61000‐4‐2,EN61000‐4‐3,EN61000‐4‐4,EN61000‐4‐5,EN61000‐4‐6,EN61000‐4‐
8,EN61000‐4‐11,EN55024,EN61000‐6‐2,EN50082‐2,EN61204‐3A,IEC60068‐2‐6(Vibration).
Warranty:Lifetime
