Application Notes | SMC Networks SMC6826MPE guide

APPLICATION NOTES

Application Notes

1.Full-duplex operation only applies to point-to-point access (such as when a switch is attached to a workstation, server or another switch). When the switch is connected to a hub, both devices must operate in half-duplex mode.

2.Avoid using flow control on a port connected to a hub unless it is actually required to solve a problem. Otherwise back pressure jamming signals may degrade overall performance for the segment attached to the hub.

3.As a general rule the length of fiber optic cable for a single switched link should not exceed:

•1000BASE-SX: 550 m (1805 ft) using multimode fiber

•1000BASE-LX: 5 km (3.2 miles) using single-mode fiber

•1000BASE-LH: 70 km (43.5 miles) using single-mode fiber

•100BASE-FX: 20 km (12.43 miles) using single-mode fiber

•100BASE-FX: 2 km (1.24 miles) using multimode fiber

However, power budget constraints must also be considered when calculating the maximum cable length for your specific environment.

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SMC Networks SMC6826MPE manual Application Notes

Contents

TigerStack III 10/100 Page TigerStack III 10/100 Installation Guide Trademarks Limited Warranty Limited Warranty Japan Vcci Class a CompliancesFCC Class a Industry Canada Class a AC/DC Line to Line ±1 kV, AC/DC Line to Earth ±2 kV CE Mark Declaration of Conformance for EMI and Safety EEC Iii Safety CompliancePower Cord Safety Australia AS/NZS 3548 1995 Class a Power Cord Set Schuko Europe Environmental Statement PurposeVii Audience Related PublicationsViii Table of Contents Making Network Connections Appendices Xii Tables Xiii Figures Figures Xiv Overview Chapter About Power-over-Ethernet Capability Switch Architecture Network Management Options Description of Hardware 10/100BASE-T Ports1000BASE-T/SFP Ports Port Status LED Indicators Port and System Status LED Indicators LED System Status LED Indicators System LED Indicators Stack Master Button Stack Master Button Optional Stacking Transceiver Mode PoE/Link Button Features and Benefits Power Supply SocketsConnectivity Performance Expandability Management Chapter Network Planning Introduction to Switching Supplying PoE Application Examples Collapsed Backbone Collapsed Backbone Network Aggregation Plan Network Aggregation Plan Remote Connections with Fiber Cable Remote Connections with Fiber Cable Making Vlan Connections Making Vlan Connections Application Notes Network Planning Selecting a Site Installing the Switch RJ-45 Connections Ethernet Cabling Equipment Checklist Package ContentsOptional Rack-Mounting Equipment Rack Mounting Mounting Attaching the Brackets Montage Rack Mounting Instructions German Attaching the Adhesive Feet Desktop or Shelf Mounting Installing an SFP Transceiver Installing an SFP Transceiver Installing a Stacking Transceiver Stacking Switches Connecting Switches in a Stack Connecting Switches in a Stack Stacking Switches Power Socket Connecting to a Power Source Connecting to the Console Port Wiring Map for Serial CableSerial Cable Wiring Stop bit-One Data bits-8 Flow control-none Connecting Network Devices Chapter Making Network ConnectionsTwisted-Pair Devices Power-over-Ethernet Connections Cabling Guidelines Connecting to PCs, Servers, Hubs and Switches Network Wiring Connections Network Wiring Connections Fiber Optic Devices Making Fiber Port Connections Connectivity Rules Maximum 1000BASE-SX Gigabit Ethernet Cable Lengths 1000BASE-T Cable RequirementsMbps Gigabit Ethernet Collision Domain Maximum 1000BASE-T Gigabit Ethernet Cable Length Cable Labeling and Connection Records Mbps Fast Ethernet Collision DomainMbps Ethernet Collision Domain Making Network Connections Appendix a Troubleshooting Diagnosing Switch IndicatorsTable A-1 Troubleshooting Chart Power and Cooling Problems Diagnosing Power Problems with the LED IndicatorsTable A-2 Power/RPU LED Indicators In-Band Access Installation Stack Troubleshooting Twisted-Pair Cable and Pin Assignments Appendix B Cables Table B-1 10/100BASE-TX MDI-X and MDI Port Pinouts 10/100BASE-TX Pin Assignments Figure B-2 Straight-through Wiring Straight-Through Wiring Figure B-3 Crossover Wiring Crossover Wiring 1000BASE-T Pin Assignments Table B-2 1000BASE-T MDI-X and MDI Port Pinouts Cable Testing for Existing Category 5 Cable Fiber Standards Adjusting Existing Category 5 Cabling to Run 1000BASE-T Cables Physical Characteristics Appendix C Specifications Switch Features Out-of-Band Management Management FeaturesStandards In-Band Management Immunity SafetyCompliances Emissions Appendix D Ordering Information Table D-1 TigerStack III 10/100 Products and Accessories Ordering Information Glossary Glossary-11000BASE-T Glossary-2 Glossary-3 Glossary-4 Glossary-5 Glossary-6 Index-1 Index Index-2 Index-3 Index-4 Page For Technical SUPPORT, Call