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SMC Networks SMC8950EM 1000BASE-T Pin Assignments, Figure B-3 Crossover Wiring, MDI Signal Name

Models: SMC8926EM SMC8950EM

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Figure B-3 Crossover Wiring

Twisted-Pair Cable and Pin Assignments B

You must connect all four wire pairs as shown in the following diagram to support Gigabit Ethernet connections.

EIA/TIA 568B RJ-45 Wiring Standard 10/100BASE-TX Crossover Cable

White/Orange Stripe

Orange

	1	White/Green Stripe	1
End A	2		2
	3	Blue	3
	4		4
	5	White/Blue Stripe	5
	6	Green	6
	7	Green	7
	7		7
	8	White/Brown Stripe	8
		White/Brown Stripe

End B

Brown

Figure B-3 Crossover Wiring

1000BASE-T Pin Assignments

All 1000BASE-T ports support automatic MDI/MDI-X operation, so you can use straight-through cables for all network connections to PCs or servers, or to other switches or hubs.

The table below shows the 1000BASE-T MDI and MDI-X port pinouts. These ports require that all four pairs of wires be connected. Note that for 1000BASE-T operation, all four pairs of wires are used for both transmit and receive.

Use 100-ohm Category 5, 5e or 6 unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable for 1000BASE-T connections. Also be sure that the length of any twisted-pair connection does not exceed 100 meters (328 feet).

Table B-2 1000BASE-T MDI and MDI-X Port Pinouts

Pin	MDI Signal Name	MDI-X Signal Name

1	Bi-directional Pair A Plus (BI_DA+)	Bi-directional Pair B Plus (BI_DB+)

2	Bi-directional Pair A Minus (BI_DA-)	Bi-directional Pair B Minus (BI_DB-)

3	Bi-directional Pair B Plus (BI_DB+)	Bi-directional Pair A Plus (BI_DA+)

4	Bi-directional Pair C Plus (BI_DC+)	Bi-directional Pair D Plus (BI_DD+)

5	Bi-directional Pair C Minus (BI_DC-)	Bi-directional Pair D Minus (BI_DD-)

6	Bi-directional Pair B Minus (BI_DB-)	Bi-directional Pair A Minus (BI_DA-)

7	Bi-directional Pair D Plus (BI_DD+)	Bi-directional Pair C Plus (BI_DC+)

8	Bi-directional Pair D Minus (BI_DD-)	Bi-directional Pair C Minus (BI_DC-)

B-3

Image 59

SMC Networks SMC8950EM manual 1000BASE-T Pin Assignments, Figure B-3 Crossover Wiring, MDI Signal Name, MDI-X Signal Name

Contents

TigerStack II 10/100/1000 24/48-Port Stackable Layer 3 Gigabit Switch SMC8926EM SMC8950EMINSTALLATION GUIDE August TigerStack II 10/100/1000 Installation GuideFrom SMCs Tiger line of feature-rich workgroup LAN solutions 20 MasonAll rights reserved. Printed in China Trademarks Copyright 2009 by SMC Networks, Inc 20 Mason Irvine, CAWarranty and Product Registration Industry Canada - Class A Compliances and Safety WarningsFCC - Class A CE Mark Declaration of Conformance for EMI and Safety EEC France and Peru only Power Cord SafetySafety Compliance PSE AlarmPower Cord Set La prise femelle de branchement doit être du type à mise à la terre France et Pérou uniquement18, ouAWG No. 16 pour un cable de longueur inferieure a` 2 metres Le cordon doit être en mesure d’acheminer un courant nominal d’auManufacturing Materials Warnings and Cautionary MessagesEnvironmental Statement End of Product Life SpanDocumentation Related Publication PurposeAudience ConventionsChapter 2 Network Planning ContentsChapter 3 Installing the Switch Chapter 1 IntroductionAppendix B Cables Appendix A TroubleshootingChapter 4 Making Network Connections Contents Appendix C SpecificationsGlossary Index Tables Figures Figures Figure 1-1 Front Panels Chapter 1 IntroductionOverview Figure 1-2 Rear Panel Switch ArchitectureNetwork Management Options Figure 1-1 Front Panels Chapter 1 IntroductionOverview Status Figure 1-3 Port LEDsTable 1-1 Port Status LEDs ConditionTable 1-2 System Status LEDs Continued Optional Redundant Power SupplyPower Supply Sockets Figure 1-5 Power Supply SocketsConnectivity Features and BenefitsOptional Media Extender Modules Extender Module LEDsManagement ExpandabilityPerformance 1 Introduction Chapter 2 Network Planning Introduction to SwitchingFigure 2-1 Collapsed Backbone Application ExamplesCollapsed Backbone Figure 2-2 Network Aggregation Plan Network Aggregation PlanFigure 2-3 Remote Connections with Fiber Cable Remote Connections with Fiber CableFigure 2-4 Making VLAN Connections Making VLAN ConnectionsFigure 2-5 IP Routing for Unicast Traffic Using Layer 3 RoutingApplication Notes 2 Network Planning Ethernet Cabling Chapter 3 Installing the SwitchSelecting a Site RJ-45 Connector Figure 3-1 RJ-45 Connections Equipment ChecklistPackage Contents Optional Rack-Mounting EquipmentFigure 3-2 Attaching the Brackets MountingRack Mounting Figure 3-4 Attaching the Adhesive Feet Desktop or Shelf MountingFigure 3-3 Installing the Switch in a Rack Figure 3-5 Installing an Optional Module Installing an Optional Module into the SwitchFigure 3-6 Inserting an SFP Transceiver into a Slot Installing an Optional SFP TransceiverFigure 3-7 Making Stacking Connections Connecting Switches in a StackFigure 3-8 Power Socket Connecting to a Power SourceStacking Topologies Switch’s 8-Pin Connecting to the Console PortWiring Map for Serial Cable Table 3-1 Serial Cable Wiring3-10 3 Installing the SwitchCabling Guidelines Connecting Network DevicesChapter 4 Making Network Connections Twisted-Pair DevicesFigure 4-1 Making Twisted-Pair Connections Connecting to PCs, Servers, Hubs and SwitchesNetwork Wiring Connections Figure 4-2 Network Wiring Connections Fiber Optic SFP DevicesFigure 4-3 Making Connections to SFP Transceivers 10 Gbps Fiber Optic Connections10 Gbps Fiber Optic Connections Figure 4-4 Connecting to an XFP TransceiverConnector Connectivity Rules1000BASE-T Cable Requirements 10 Gbps Ethernet Collision DomainConnector 1000 Mbps Gigabit Ethernet Collision Domain100 Mbps Fast Ethernet Collision Domain 10 Mbps Ethernet Collision DomainCable Labeling and Connection Records Table A-1 Troubleshooting Chart Appendix A TroubleshootingDiagnosing Switch Indicators Diagnosing Power Problems with the LEDsIn-Band Access Power and Cooling ProblemsInstallation Stack Troubleshooting A Stack TroubleshootingA Troubleshooting Figure B-1 RJ-45 Connector Pin Numbers Appendix B CablesTwisted-Pair Cable and Pin Assignments 10BASE-T/100BASE-TX Pin AssignmentsFigure B-2 Straight-through Wiring Straight-Through WiringCrossover Wiring MDI Signal NameMDI-X Signal Name 1000BASE-T Pin AssignmentsFigure B-3 Crossover Wiring MDI Signal NameTable B-3 Fiber Standards Cable Testing for Existing Category 5 CableAdjusting Existing Category 5 Cabling to Run 1000BASE-T Fiber StandardsDescription Optimized for high-power denseTable B-3 Fiber Standards ITU-TB Cables Ports Appendix C SpecificationsPhysical Characteristics Switching DatabasePower Consumption WeightTemperature Power SupplyForwarding Mode Switch FeaturesManagement Features StandardsCE Mark CompliancesExtender Modules 10GBASE Extender Module XFPGlossary Auto-Negotiation Institute of Electrical and Electronic Engineers Network Diameter Redundant Power Supply RPSRJ-45 Connector Switched PortsNumerics IndexIndex-2 Indexweb-based management VLANs routing 2-6 taggingIndex-4 IndexPage 150200000054A R01 SMC8926EM SMC8950EM