SMC Networks SMC6826MPE manual Chapter Network Planning, Introduction to Switching

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CHAPTER 2

NETWORK PLANNING

Introduction to Switching

A network switch allows simultaneous transmission of multiple packets via non-crossbar switching. This means that it can partition a network more efficiently than bridges or routers. The switch has, therefore, been recognized as one of the most important building blocks for today’s networking technology.

When performance bottlenecks are caused by congestion at the network access point (such as the network card for a high-volume file server), the device experiencing congestion (server, power user, or hub) can be attached directly to a switched port. By using full-duplex mode, the bandwidth of the dedicated segment can be doubled to maximize throughput.

When networks are based on repeater (hub) technology, the distance between end stations is limited by a maximum hop count. However, a switch turns the hop count back to zero. So subdividing the network into smaller and more manageable segments, and linking them to the larger network by means of a switch, removes this limitation.

A switch can be easily configured in any network to significantly boost bandwidth while using conventional cabling and network cards.

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Contents TigerStack III 10/100 Page TigerStack III 10/100 Installation Guide Trademarks Limited Warranty Limited Warranty FCC Class a CompliancesIndustry Canada Class a Japan Vcci Class aAC/DC Line to Line ±1 kV, AC/DC Line to Earth ±2 kV CE Mark Declaration of Conformance for EMI and Safety EECPower Cord Safety Safety ComplianceAustralia AS/NZS 3548 1995 Class a IiiPower Cord Set Schuko Europe Environmental Statement PurposeVii Audience Related PublicationsViii Table of Contents Making Network Connections Appendices Xii TablesXiii FiguresFigures XivOverview Chapter AboutPower-over-Ethernet Capability Switch ArchitectureNetwork Management Options Description of Hardware 10/100BASE-T Ports1000BASE-T/SFP Ports Port Status LED Indicators Port and System Status LED IndicatorsLED System Status LED Indicators System LED IndicatorsStack Master Button Stack Master ButtonOptional Stacking Transceiver Mode PoE/Link ButtonFeatures and Benefits Power Supply SocketsConnectivity Performance ExpandabilityManagement Chapter Network Planning Introduction to SwitchingSupplying PoE Application ExamplesCollapsed Backbone Collapsed BackboneNetwork Aggregation Plan Network Aggregation PlanRemote Connections with Fiber Cable Remote Connections with Fiber CableMaking Vlan Connections Making Vlan ConnectionsApplication Notes Network Planning Selecting a Site Installing the SwitchRJ-45 Connections Ethernet CablingEquipment Checklist Package ContentsOptional Rack-Mounting Equipment Rack Mounting MountingAttaching the Brackets Montage Rack Mounting Instructions German Attaching the Adhesive Feet Desktop or Shelf MountingInstalling an SFP Transceiver Installing an SFP TransceiverInstalling a Stacking Transceiver Stacking SwitchesConnecting Switches in a Stack Connecting Switches in a StackStacking Switches Power Socket Connecting to a Power SourceConnecting to the Console Port Wiring Map for Serial CableSerial Cable Wiring Stop bit-One Data bits-8 Flow control-none Connecting Network Devices Chapter Making Network ConnectionsTwisted-Pair Devices Power-over-Ethernet Connections Cabling Guidelines Connecting to PCs, Servers, Hubs and SwitchesNetwork Wiring Connections Network Wiring Connections Fiber Optic Devices Making Fiber Port Connections Connectivity RulesMbps Gigabit Ethernet Collision Domain 1000BASE-T Cable RequirementsMaximum 1000BASE-T Gigabit Ethernet Cable Length Maximum 1000BASE-SX Gigabit Ethernet Cable LengthsCable Labeling and Connection Records Mbps Fast Ethernet Collision DomainMbps Ethernet Collision Domain Making Network Connections Appendix a Troubleshooting Diagnosing Switch IndicatorsTable A-1 Troubleshooting Chart Power and Cooling Problems Diagnosing Power Problems with the LED IndicatorsTable A-2 Power/RPU LED Indicators In-Band Access InstallationStack Troubleshooting Twisted-Pair Cable and Pin Assignments Appendix B CablesTable B-1 10/100BASE-TX MDI-X and MDI Port Pinouts 10/100BASE-TX Pin AssignmentsFigure B-2 Straight-through Wiring Straight-Through WiringFigure B-3 Crossover Wiring Crossover Wiring1000BASE-T Pin Assignments Table B-2 1000BASE-T MDI-X and MDI Port Pinouts Cable Testing for Existing Category 5 CableFiber Standards Adjusting Existing Category 5 Cabling to Run 1000BASE-TCables Physical Characteristics Appendix C SpecificationsSwitch Features Standards Management FeaturesIn-Band Management Out-of-Band ManagementCompliances SafetyEmissions ImmunityAppendix D Ordering Information Table D-1 TigerStack III 10/100 Products and AccessoriesOrdering Information Glossary Glossary-11000BASE-T Glossary-2 Glossary-3 Glossary-4 Glossary-5 Glossary-6 Index-1 IndexIndex-2 Index-3 Index-4 Page For Technical SUPPORT, Call