SMC Networks SMC6608T, SMC6608M manual Introduction to Switching

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PLANNING

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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Contents TigerSwitch User Guide TigerSwitch Trademarks Limited Warranty Limited Warranty Table of Contents Specifications TroubleshootingAppendices Pin AssignmentsIii List of FiguresTable of Contents FCC Class a CompliancesEC Conformance Declaration Industry Canada Class aCompliances Japan Vcci Class a Australia AS/NZS 3548 1995 Class aWichtige Sicherheitshinweise ViiViii 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 Description100BASE-FX Ports SMC6608M only Switch Ports10BASE-T/100BASE-TX Ports Front Panel LEDs Status LEDsConsole Port Configure ButtonRedundant Power Units RPUs Optional Redundant Power UnitPower Supply Receptacles Switching Methods Switch ArchitectureSpanning Tree Protocol Telnet Management OptionsSerial Console Port Performance Key Features and BenefitsConnectivity Practical Management Easy InstallationChapter Planning Introduction to Switching Collapsed Backbone Sample ApplicationsMultiple Port Bridging Connections Multiport BridgingServer Farm Connectivity and Expansion Server Farm AggregationCascading to a Fast Ethernet Switch High-Speed Switch LinksCollapsed Backbone with Fiber Cable Collapsed Backbone Using Fiber CableHigh-Speed Fiber Backbone High-Speed Fiber BackboneApplication Notes Page Chapter Installation Selecting a Site Required Rack-Mounting Equipment Equipment ChecklistPackage Contents Mounting Mounting the Switch in a RackAttaching the Brackets Attaching the Adhesive Feet Mounting and Stacking the Switch on a Flat SurfaceConnecting to a Power Source Powering UpDiagnostics Connectivity Rules Making Network ConnectionsMbps Ethernet Collision Domain SMC 5 4 3 RuleSMC 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 DiameterTwisted-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 ConfigurationSnmp Network Connection In-Band Connections TelnetLogin System Configuration ProgramMain Menu Main MenuDownload & Reset ConfigurationPassword Configuration Setting PasswordsConsole Configuration Console Port ConfigurationSystem Configuration System Parameter ConfigurationConfiguration and Management Port Configuration Screen Port ConfigurationConfiguration and Management Port Priority Path Cost Spanning Tree ConfigurationSpanning Tree Configuration Yes Configuration and Management Virtual LAN Configuration Screen Virtual LAN ConfigurationSystem Monitoring Monitoring via the Configure Button and LEDsLEDs Functions Status LEDsSystem Information Advanced System MonitoringSystem Information Port Status Statistics StatisticsStatistics Screen Items Address Table Address TablePort State DesignatedCost DesignatedBridgeID DesignatedPort Spanning Tree InformationCurrent Spanning Tree Information Parameter Description Spanning Tree Information Screen ItemsTftp Download Downloading System SoftwareDownloading via Tftp Protocol Downloading via the Console Port Reset Resetting the SwitchChapter Management VIA Snmp Snmp Protocol MIB Objects Snmp Configuration Snmp Parameter ConfigurationAssigning Snmp Agent Access Rights Community Strings Community Strings ScreenTrap Receivers Trap Receivers ScreenAppendix a Troubleshooting Switch Indicators System Diagnostic Tests Diagnostic TestsComponent Failure LED Array Indicator Column System FailuresPort Diagnostic Tests System DiagnosticsPower and Cooling Problems Port Failures Test Failure LED Array RowPhysical Configuration Communication ModeCabling Network CardsTerminal Emulation Management InterfaceSystem Integrity Page Appendix B PIN Assignments RJ-45 Pin Assignments Pin Number Assignment RJ-45 Pin AssignmentsCrossover Wiring Straight-Through WiringStraight-Through RJ-45 Pin Assignments End Crossover RJ-45 Pin Assignments EndDCE Console Port Pin AssignmentsSwitch 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 ModemNull 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 CompliancesModel SMC6608M Model SMC6608T100BASE-FX Page Appendix D Glossary ANSI/IEEE 802.3u Standard ANSI/IEEE 802.3 StandardCrossover Port CollisionEnd Station EthernetRJ-45 Connector Media Access Control MACIcmp Internet Control Message Protocol In-BandSimple Network Management Protocol Snmp TerminatorStraight-through Port UTP Unshielded Twisted-PairPublication Number 900.168, Rev. B