SMC Networks SMC6724L3 INT manual Chapter Network Planning, Introduction to Switching

Page 29

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. And, 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 maximum distance between end stations is limited. For Ethernet, there may be up to four hubs between any pair of stations; for Fast Ethernet, the maximum is two. This is known as the 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 Ethernet or Fast Ethernet network to significantly boost bandwidth while using conventional cabling and network cards.

2-1

Image 29

Contents TigerSwitch 10/100 Page TigerSwitch 10/100 Installation Guide Trademarks Limited Warranty SMC Networks, Inc Tesla Irvine, CA Industry Canada Class a CompliancesFCC Class a EC Conformance Declaration Class a Japan Vcci Class a Australia AS/NZS 3548 1995 Class a Underwriters Laboratories Compliance Statement Safety ComplianceWarnhinweis Faseroptikanschlüsse Optische Sicherheit Wichtige Sicherheitshinweise Germany Viii Table of Contents Making Network Connections Installing the SwitchAppendices Table of Contents Overview Chapter About Tigerswitch 10/100SMC6724L3 Front and Rear Panels Switch ArchitectureManagement Options RJ-45 Ports Description of HardwarePort Status LEDs Ports Status LEDsSystem Status LEDs System Status LEDsOptional 100BASE-FX Module SMC6824FSSC Optional Media Extender ModulesOptional 10/100/1000BASE-T Module SMC6824GT Optional 1000BASE-X Gbic Module SMC6824GB Optional 100BASE-FX Module SMC6824FMSCPower Supply Receptacle Optional Redundant Power UnitExpandability Features and BenefitsConnectivity Management PerformanceAbout the Tigerswitch 10/100 Chapter Network Planning Introduction to SwitchingCollapsed Backbone Application ExamplesCentral Wiring Closet Central Wiring ClosetRemote Connection with Fiber Cable Remote Connection with Fiber CableMaking Vlan Connections Making Vlan ConnectionsIP Routing for Unicast Traffic Using Layer 3 RoutingMbps Gigabit Ethernet Collision Domain Connectivity Rules10/100 Mbps Ethernet Collision Domain Application Notes Network Planning Selecting a Site Installing the SwitchOptional Rack-Mounting Equipment Equipment ChecklistPackage Contents Rack Mounting MountingAttaching the Brackets Attaching the Adhesive Feet Desktop or Shelf MountingInstalling an Optional Module Installing an Optional Module into the SwitchInstalling a Gbic Transceiver Installing a Gbic TransceiverPower Receptacle Connecting to a Power SourceChapter Making Network Connections Connecting Network DevicesTwisted-Pair Devices Cabling GuidelinesMaking Twisted-Pair Connections Connecting to PCs, Servers, Hubs and SwitchesTWISTED-PAIR Devices Wiring Closet Connections Wiring Closet ConnectionsFiber Optic Devices Making SC Port Connections Diagnosing Switch Indicators Appendix a TroubleshootingIn-Band Access Power and Cooling ProblemsInstallation Appendix B Cables SpecificationsFiber SMF Twisted-Pair Cable and Pin Assignments10BASE-T/100BASE-TX Pin Assignments Figure B-1. RJ-45 Connector Pin NumbersCrossover Wiring Straight-Through Wiring1000BASE-T Pin Assignments 1000BASE-T Cable Requirements Cable Testing for Existing Category 5 CableAdjusting Existing Category 5 Cabling Console Port Pin Assignments Wiring Map for Serial CableCables Base Unit Appendix C SpecificationsPhysical Characteristics Compliances 100BASE-FX Extender Modules WarrantySlide-in Modules Model 1000BASE-T Extender Module1000BASE-X Gbic Module Specifications Appendix D Ordering Information Ordering Information 1000BASE-T GlossaryBandwidth Auto-NegotiationCollision Collision DomainFast Ethernet Fast Ethernet SwitchFull Duplex Gigabit EthernetIeee 802.3z Media Access Control MACLAN Segment Link SegmentStraight-through Port RJ-45 ConnectorSwitched Ports Glossary-6 Numerics IndexIndex-2 Index-3 Index-4 Page For Technical SUPPORT, Call