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SMC Networks SMC8926EM Connectivity Rules, 1000BASE-T Cable Requirements, Fiber Size, Connector

Models: SMC8926EM SMC8950EM

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4 Making Network Connections

Connectivity Rules

When adding hubs (repeaters) to your network, please follow the connectivity rules listed in the manuals for these products. However, 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.

1000BASE-T Cable Requirements

All Category 5 UTP cables that are used for 100BASE-TX connections should also work for 1000BASE-T, providing that all four wire pairs are connected. However, it is recommended that for all critical connections, or any new cable installations, Category 5e (enhanced Category 5) or Category 6 cable should be used. The Category 5e specification includes test parameters that are only recommendations for Category 5. Therefore, the first step in preparing existing Category 5 cabling for running 1000BASE-T is a simple test of the cable installation to be sure that it complies with the IEEE 802.3-2005 standards.

10 Gbps Ethernet Collision Domain

Table 4-1 Maximum 10GBASE-SR 10 Gigabit Ethernet Cable Length

Fiber Size	Fiber Bandwidth	Maximum Cable Length	Connector
62.5/125 micron	160 MHz/km	2-26 m	LC
single-mode fiber		(7-85 ft.)
62.5/125 micron	200 MHz/km	2-33 m	LC
single-mode fiber		(7-108 ft.)
50/125 micron	400 MHz/km	2-66 m	LC
single-mode fiber		(7-216 ft.)
50/125 micron	500 MHz/km	2-82 m	LC
single-mode fiber		(7-269 ft.)
50/125 micron	2000 MHz/km	2-300 m	LC
single-mode fiber		(7-984 ft.)

Table 4-2 Maximum 10GBASE-LR 10 Gigabit Ethernet Cable Length

Fiber Size	Fiber Bandwidth	Maximum Cable Length	Connector

9/125 micron	N/A	10 km (6.2 miles)	LC
single-mode fiber

Table 4-3 Maximum 10GBASE-ER 10 Gigabit Ethernet Cable Length
Fiber Size	Fiber Bandwidth	Maximum Cable Length	Connector

9/125 micron	N/A	40 km (24.85 miles)	LC
single-mode fiber

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SMC Networks SMC8926EM manual Connectivity Rules, 1000BASE-T Cable Requirements, Gbps Ethernet Collision Domain, Fiber Size

Contents

TigerStack II 10/100/1000 24/48-Port Stackable Layer 3 Gigabit Switch SMC8926EM SMC8950EMINSTALLATION GUIDE 20 Mason TigerStack II 10/100/1000 Installation GuideFrom SMCs Tiger line of feature-rich workgroup LAN solutions AugustCopyright 2009 by SMC Networks, Inc 20 Mason Irvine, CA All rights reserved. Printed in China TrademarksWarranty and Product Registration Industry Canada - Class A Compliances and Safety WarningsFCC - Class A CE Mark Declaration of Conformance for EMI and Safety EEC PSE Alarm Power Cord SafetySafety Compliance France and Peru onlyPower Cord Set Le cordon doit être en mesure d’acheminer un courant nominal d’au France et Pérou uniquement18, ouAWG No. 16 pour un cable de longueur inferieure a` 2 metres La prise femelle de branchement doit être du type à mise à la terreEnd of Product Life Span Warnings and Cautionary MessagesEnvironmental Statement Manufacturing MaterialsDocumentation Conventions PurposeAudience Related PublicationChapter 1 Introduction ContentsChapter 3 Installing the Switch Chapter 2 Network PlanningAppendix 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 Condition Figure 1-3 Port LEDsTable 1-1 Port Status LEDs StatusFigure 1-5 Power Supply Sockets Optional Redundant Power SupplyPower Supply Sockets Table 1-2 System Status LEDs ContinuedExtender Module LEDs Features and BenefitsOptional Media Extender Modules ConnectivityManagement ExpandabilityPerformance 1 Introduction Introduction to Switching Chapter 2 Network PlanningFigure 2-1 Collapsed Backbone Application ExamplesCollapsed Backbone Network Aggregation Plan Figure 2-2 Network Aggregation PlanRemote Connections with Fiber Cable Figure 2-3 Remote Connections with Fiber CableMaking VLAN Connections Figure 2-4 Making VLAN ConnectionsUsing Layer 3 Routing Figure 2-5 IP Routing for Unicast TrafficApplication Notes 2 Network Planning Ethernet Cabling Chapter 3 Installing the SwitchSelecting a Site Optional Rack-Mounting Equipment Equipment ChecklistPackage Contents RJ-45 Connector Figure 3-1 RJ-45 ConnectionsFigure 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 Installing an Optional Module into the Switch Figure 3-5 Installing an Optional ModuleInstalling an Optional SFP Transceiver Figure 3-6 Inserting an SFP Transceiver into a SlotConnecting Switches in a Stack Figure 3-7 Making Stacking ConnectionsFigure 3-8 Power Socket Connecting to a Power SourceStacking Topologies Table 3-1 Serial Cable Wiring Connecting to the Console PortWiring Map for Serial Cable Switch’s 8-Pin3 Installing the Switch 3-10Twisted-Pair Devices Connecting Network DevicesChapter 4 Making Network Connections Cabling GuidelinesFigure 4-1 Making Twisted-Pair Connections Connecting to PCs, Servers, Hubs and SwitchesNetwork Wiring Connections Fiber Optic SFP Devices Figure 4-2 Network Wiring Connections10 Gbps Fiber Optic Connections Figure 4-3 Making Connections to SFP TransceiversFigure 4-4 Connecting to an XFP Transceiver 10 Gbps Fiber Optic Connections10 Gbps Ethernet Collision Domain Connectivity Rules1000BASE-T Cable Requirements Connector10 Mbps Ethernet Collision Domain 1000 Mbps Gigabit Ethernet Collision Domain100 Mbps Fast Ethernet Collision Domain ConnectorCable Labeling and Connection Records Diagnosing Power Problems with the LEDs Appendix A TroubleshootingDiagnosing Switch Indicators Table A-1 Troubleshooting ChartIn-Band Access Power and Cooling ProblemsInstallation Stack Troubleshooting Stack Troubleshooting AA Troubleshooting 10BASE-T/100BASE-TX Pin Assignments Appendix B CablesTwisted-Pair Cable and Pin Assignments Figure B-1 RJ-45 Connector Pin NumbersMDI Signal Name Straight-Through WiringCrossover Wiring Figure B-2 Straight-through WiringMDI Signal Name 1000BASE-T Pin AssignmentsFigure B-3 Crossover Wiring MDI-X Signal NameFiber Standards Cable Testing for Existing Category 5 CableAdjusting Existing Category 5 Cabling to Run 1000BASE-T Table B-3 Fiber StandardsITU-T Optimized for high-power denseTable B-3 Fiber Standards DescriptionB Cables Switching Database Appendix C SpecificationsPhysical Characteristics PortsPower Consumption WeightPower Supply SizeStandards Switch FeaturesManagement Features Forwarding Mode10GBASE Extender Module XFP CompliancesExtender Modules CE MarkGlossary Auto-Negotiation Institute of Electrical and Electronic Engineers Switched Ports Redundant Power Supply RPSRJ-45 Connector Network DiameterIndex NumericsIndex Index-2VLANs routing 2-6 tagging web-based managementIndex Index-4Page SMC8926EM SMC8950EM 150200000054A R01