Introduction to Switching | SMC Networks SMC6608T, SMC6608M guide

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Introduction to Switching

An Ethernet or Fast Ethernet switch allows simultaneous transmission of multiple packets via high-bandwidth shared memory. This means that it can partition a network more efficiently than bridges or routers. The switch is, therefore, fast being 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 (server, power user or switch) 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.

*Note: When connected to a shared collision domain (such as a hub with multiple workstations), each switched port may operate only in half- duplex mode.

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SMC Networks SMC6608T, SMC6608M manual Introduction to Switching

Contents

TigerSwitch User Guide TigerSwitch Trademarks Limited Warranty Limited Warranty Table of Contents Specifications TroubleshootingAppendices Pin Assignments Iii List of Figures Table of Contents FCC Class a CompliancesEC Conformance Declaration Industry Canada Class a Compliances Japan Vcci Class a Australia AS/NZS 3548 1995 Class a Wichtige Sicherheitshinweise Vii Viii Chapter About Tigerswitch About the Tigerswitch TigerSwitch 100 Overview TigerSwitch 100M Base Unit Model SMC6608M Port Fast Ethernet Modules for Model SMC6608M Module Ports Connectors Description 100BASE-FX Ports SMC6608M only Switch Ports10BASE-T/100BASE-TX Ports Front Panel LEDs Status LEDs Console Port Configure Button Redundant Power Units RPUs Optional Redundant Power UnitPower Supply Receptacles Switching Methods Switch Architecture Spanning Tree Protocol Telnet Management OptionsSerial Console Port Performance Key Features and BenefitsConnectivity Practical Management Easy Installation Chapter Planning Introduction to Switching Collapsed Backbone Sample Applications Multiple Port Bridging Connections Multiport Bridging Server Farm Connectivity and Expansion Server Farm Aggregation Cascading to a Fast Ethernet Switch High-Speed Switch Links Collapsed Backbone with Fiber Cable Collapsed Backbone Using Fiber Cable High-Speed Fiber Backbone High-Speed Fiber Backbone Application Notes Page Chapter Installation Selecting a Site Required Rack-Mounting Equipment Equipment ChecklistPackage Contents Mounting Mounting the Switch in a Rack Attaching the Brackets Attaching the Adhesive Feet Mounting and Stacking the Switch on a Flat Surface Connecting to a Power Source Powering Up Diagnostics Connectivity Rules Making Network ConnectionsMbps Ethernet Collision Domain SMC 5 4 3 Rule SMC 3 2 Rule for Class II Repeaters Mbps Fast Ethernet Collision DomainSMC 2 1 Rule for Class I and Class II Repeaters Maximum 100BASE-T Network Diameter Twisted-Pair Cabling Guidelines Daisy-Chain Port Connecting 10BASE-T/100BASE-TX PortsFixed Crossover Ports Fiber Cable Connectors Connecting 100BASE-FX PortsPage Chapter Configuration Management Configuration and Management Configuration Options Basic Port Settings Required Connections and Switch Access Advanced System Configuration Snmp Network Connection In-Band Connections Telnet Login System Configuration Program Main Menu Main Menu Download & Reset Configuration Password Configuration Setting Passwords Console Configuration Console Port Configuration System Configuration System Parameter Configuration Configuration and Management Port Configuration Screen Port Configuration Configuration and Management Port Priority Path Cost Spanning Tree ConfigurationSpanning Tree Configuration Yes Configuration and Management Virtual LAN Configuration Screen Virtual LAN Configuration System Monitoring Monitoring via the Configure Button and LEDs LEDs Functions Status LEDs System Information Advanced System MonitoringSystem Information Port Status Statistics Statistics Statistics Screen Items Address Table Address Table Port State DesignatedCost DesignatedBridgeID DesignatedPort Spanning Tree InformationCurrent Spanning Tree Information Parameter Description Spanning Tree Information Screen Items Tftp Download Downloading System SoftwareDownloading via Tftp Protocol Downloading via the Console Port Reset Resetting the Switch Chapter Management VIA Snmp Snmp Protocol MIB Objects Snmp Configuration Snmp Parameter ConfigurationAssigning Snmp Agent Access Rights Community Strings Community Strings Screen Trap Receivers Trap Receivers Screen Appendix a Troubleshooting Switch Indicators System Diagnostic Tests Diagnostic TestsComponent Failure LED Array Indicator Column System Failures Port Diagnostic Tests System DiagnosticsPower and Cooling Problems Port Failures Test Failure LED Array Row Physical Configuration Communication ModeCabling Network Cards Terminal Emulation Management Interface System Integrity Page Appendix B PIN Assignments RJ-45 Pin Assignments Pin Number Assignment RJ-45 Pin Assignments Crossover Wiring Straight-Through WiringStraight-Through RJ-45 Pin Assignments End Crossover RJ-45 Pin Assignments End DCE Console Port Pin Assignments Switch Port Pin Modem Port DB-9 Pin No Signal Switch Port PC Port DB-9 Pin No SignalConsole Port to 9-Pin COM Port on PC Console Port to 25-Pin DCE Port on Modem Null Modem Pin PC Port Switch Port DB-9 Pin NoConsole Port to 25-Pin DTE Port on PC Appendix C Specifications All Models Power Consumption Input PowerOperating Temperature EMC/Safety Compliances Model SMC6608M Model SMC6608T 100BASE-FX Page Appendix D Glossary ANSI/IEEE 802.3u Standard ANSI/IEEE 802.3 Standard Crossover Port CollisionEnd Station Ethernet RJ-45 Connector Media Access Control MACIcmp Internet Control Message Protocol In-Band Simple Network Management Protocol Snmp TerminatorStraight-through Port UTP Unshielded Twisted-Pair Publication Number 900.168, Rev. B