Transition Networks SM24-100SFP-AH instruction

B Cables

Cable Testing for Existing Category 5 Cable

Installed Category 5 cabling must pass tests for Attenuation, Near-End Crosstalk (NEXT), and Far-End Crosstalk (FEXT). This cable testing information is specified in the ANSI/TIA/EIA-TSB-67 standard. Additionally, cables must also pass test parameters for Return Loss and Equal-Level Far-End Crosstalk (ELFEXT). These tests are specified in the ANSI/TIA/EIA-TSB-95 Bulletin, “The Additional Transmission Performance Guidelines for 100 Ohm 4-Pair Category 5 Cabling.”

Note that when testing your cable installation, be sure to include all patch cables between switches and end devices.

Adjusting Existing Category 5 Cabling to Run 1000BASE-T

If your existing Category 5 installation does not meet one of the test parameters for 1000BASE-T, there are basically three measures that can be applied to try and correct the problem:

1.Replace any Category 5 patch cables with high-performance Category 5e or Category 6 cables.

2.Reduce the number of connectors used in the link.

3.Reconnect some of the connectors in the link.

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Transition Networks SM24-100SFP-AH manual Cable Testing for Existing Category 5 Cable

Contents

SM24-100SFP-AH Page Fast Ethernet Switch SM24-100SFP-AH E082008-DT-R01 150200069500A Compliances and Safety Warnings LVD Warnhinweis Faseroptikanschlüsse Optische Sicherheit Iii Power Cord Set France et Pérou uniquement Sein und die Aufschrift HAR oder Basec tragen Documentation End of Product Life SpanManufacturing Materials Vii About This Guide Viii Contents Contents Switch Features Management Features Standards Compliances Tables Figure B-1 RJ-45 Connector Pin Numbers Figures Introduction Overview Network Management Options Switch ArchitectureDescription of Hardware SFP Slots Port and System Status LEDs LED System Status LED System Status LEDs Connectivity Features and BenefitsPower Supply Sockets Expandability Management Introduction to Switching Network Planning Collapsed Backbone Application ExamplesNetwork Planning Network Aggregation Plan Network Aggregation Plan Remote Connection with Fiber Cable Remote Connection with Fiber Cable Making Vlan Connections Making Vlan Connections Application Notes Package Contents Installing the SwitchEquipment Checklist Selecting a Site Optional Rack-Mounting Equipment Installing the SwitchMounting Rack Mounting Desktop or Shelf Mounting Mounting Installing an Optional SFP Transceiver Inserting an SFP Transceiver into a Slot Connecting to a Power Source Connecting to the Console Port Wiring Map for Serial Cable Sgnd signal ground Making Network Connections Connecting Network DevicesConnecting to PCs, Servers, Hubs and Switches Twisted-Pair Devices Network Wiring Connections Making Network Connections Fiber Optic SFP Devices Making Fiber Port Connections 1000BASE-T Cable Requirements Connectivity RulesMbps Gigabit Ethernet Collision Domain Mbps Fast Ethernet Collision Domain Mbps Ethernet Collision Domain Cable Labeling and Connection Records Diagnosing Switch Indicators Appendix a TroubleshootingDiagnosing Power Problems with the LEDs In-Band Access Power and Cooling ProblemsInstallation Troubleshooting Twisted-Pair Cable and Pin Assignments Appendix B Cables10BASE-T/100BASE-TX Pin Assignments Crossover Wiring Straight-Through WiringCables 1000BASE-T Pin Assignments Twisted-Pair Cable and Pin Assignments B Cable Testing for Existing Category 5 Cable Appendix C Supported SFP Transceivers Supported SFP Transceivers Appendix D Specifications Physical Characteristics Management Features Switch FeaturesSpecifications Compliances StandardsStandards D Specifications Glossary Glossary-1 Glossary Glossary-2 Ieee 802.3u Glossary-3 TIA Glossary-4 Index Index-1 Index Index-2Page SM24-100SFP-AH E082008-DT-R01 150200069500A