Chapter Network Planning | SMC Networks 100 guide

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.

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SMC Networks 100 manual Chapter Network Planning, Introduction to Switching

Contents

TigerSwitch Page TigerSwitch Installation Guide Trademarks Limited Warranty Limited Warranty EC Conformance Declaration Class a CompliancesFCC Class a Industry Canada Class a Iii Safety ComplianceWarnhinweis Faseroptikanschlüsse Optische Sicherheit Underwriters Laboratories Compliance Statement Wichtige Sicherheitshinweise Germany Table of Contents Making Network Connections Vii Viii Overview Chapter About Tigerswitch Optional Modules Switch Architecture 100BASE-FX VF-45 Ports Description of HardwareManagement Options Port and System LEDs Status LEDs Network Management Module Network Management Module VLANs Spanning Tree Protocol Optional Media Extender Modules Multicast SwitchingTraffic Priority Optional 100BASE-FX Module SMC6900FSC Optional 1000BASE-LX Module SMC6900GLSC Optional 100BASE-FX Module SMC6900FSSCOptional 1000BASE-SX Module SMC6900G Optional Stack Module SMC6900S Optional Redundant Power Unit SMCRPU150WOptional 1000BASE-T Module SMC6900GT 12. Power Supply Receptacles Power Supply Receptacles Expandability Features and BenefitsConnectivity Management Performance About the Tigerswitch About the Tigerswitch Chapter Network Planning Introduction to Switching Collapsed Backbone Sample Applications Central Wiring Closet Central Wiring Closet Remote Connections with Fiber Cable Collapsed Backbone Using Fiber Cable Making Vlan Connections Making Vlan Connections Mbps Gigabit Ethernet Collision Domain Connectivity RulesMaximum 1000BASE-T Optic Cable Distance Maximum 1000BASE-SX Fiber Optic Cable Distance Mbps Fast Ethernet Collision Domain Maximum Network Diameter Using RepeatersMaximum 100BASE-FX Fiber Optic Cable Distance SMC 3-2 Rule for Class II Repeaters Maximum Fast Ethernet Cable Distance Cable Type Connecting Max. Distance Application Notes Network Planning Selecting a Site Installing the Switch Optional Rack-Mounting Equipment Equipment ChecklistPackage Contents Rack Mounting Mounting Attaching the Brackets Attaching the Adhesive Feet Desktop or Shelf Mounting Installing an Optional Module into the Switch Stacking Installing a Module Stacking the Switches Power Receptacle Connecting to a Power Source Installing the Switch Chapter Making Network Connections Connecting Network Devices VF-45 Fiber Connections SC Fiber Connections Making SC Port Connections Cabling Guidelines Connecting to PCs, Servers, Hubs and Switches1000BASE-T Twisted-Pair Connections Making Twisted-Pair Connections Wiring Closet Connections Wiring Closet Connections Making Network Connections Diagnosing Switch Indicators Appendix a Troubleshooting In-Band Access Power and Cooling ProblemsInstallation Troubleshooting Troubleshooting Appendix B Cables Specifications Cables 1000BASE-T Pin Assignments RJ-45 Port and Cable Assignments 1000BASE-T Cable Requirements Cable Testing for Existing Category 5 Cable Adjusting Existing Category 5 Cabling DB-9 Port Pin Assignments Console Port Pin Assignments Console Port to 25-Pin DTE Port on PC Console Port to 9-Pin COM Port on PCConsole Port to 25-Pin DCE Port on Modem Cables Physical Characteristics Appendix C Specifications Temperature WeightPower Supply Power Consumption Switch Features Management Features Compliances WarrantyStandards 1000BASE-SX Extender Module Slide-in Module100BASE-FX Extender Module 1000BASE-T Extender Module 1000BASE-LX Extender Module Stack Module Connector InterfaceAgent Module Appendix D Ordering Information Ordering Information Glossary-1 Glossary1000BASE-T Auto-Negotiation Glossary-2 Glossary-3 Glossary-4 Glossary-5 Virtual LAN Vlan Glossary-6Transmission Control Protocol/Internet Protocol TCP/IP Index-1 Index Index-2 See RPU Index-3 Index-4 Page Internet