Appendix a Troubleshooting | SMC Networks SMC6826MPE manual

APPENDIX A

TROUBLESHOOTING

Diagnosing Switch Indicators

Table A-1 Troubleshooting Chart

Symptom	Action

PWR LED is Off	• Internal power supply may be disconnected. Check connections
	between the switch, the power cord and the wall outlet.

Diag LED is Amber	• The system has detected a fault. Power cycle the switch to try and
	clear the condition.
	• If the condition does not clear, contact your dealer for assistance.

Diag LED is Flashing Amber	• Check that all stacking cables are properly connected.

Stack LED is Flashing Green	• The stack has not completed its initial configuration. Wait a few
or Amber	minutes for the process to complete.
	• If flashing continues, check that the Master Select button is pressed
	in on only one switch.
	• Check that all stacking cables are properly connected. Replace the
	stacking cable if necessary.

Link/Act LED is Off	• Verify that the switch and attached device are powered on.
	• Be sure the cable is plugged into both the switch and corresponding
	device.
	• If the switch is installed in a rack, check the connections to the
	punch-down block and patch panel.
	• Verify that the proper cable type is used and its length does not
	exceed specified limits.
	• Check the adapter on the attached device and cable connections for
	possible defects. Replace the defective adapter or cable if necessary.

A-1

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SMC Networks SMC6826MPE manual Appendix a Troubleshooting, Diagnosing Switch Indicators, Table A-1 Troubleshooting Chart

Contents

TigerStack III 10/100 Page TigerStack III 10/100 Installation Guide Trademarks Limited Warranty Limited Warranty FCC Class a CompliancesIndustry Canada Class a Japan Vcci 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 Power Cord Safety Safety ComplianceAustralia AS/NZS 3548 1995 Class a Iii Power Cord Set Schuko Europe Vii Environmental StatementPurpose Viii AudienceRelated Publications 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 1000BASE-T/SFP Ports Description of Hardware10/100BASE-T 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 Connectivity Features and BenefitsPower Supply Sockets 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 Optional Rack-Mounting Equipment Equipment ChecklistPackage Contents 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 Serial Cable Wiring Connecting to the Console PortWiring Map for Serial Cable Stop bit-One Data bits-8 Flow control-none Twisted-Pair Devices Connecting Network DevicesChapter Making Network Connections 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 Mbps Gigabit Ethernet Collision Domain 1000BASE-T Cable RequirementsMaximum 1000BASE-T Gigabit Ethernet Cable Length Maximum 1000BASE-SX Gigabit Ethernet Cable Lengths Mbps Ethernet Collision Domain Cable Labeling and Connection RecordsMbps Fast Ethernet Collision Domain Making Network Connections Table A-1 Troubleshooting Chart Appendix a TroubleshootingDiagnosing Switch Indicators Table A-2 Power/RPU LED Indicators Power and Cooling ProblemsDiagnosing Power Problems with the 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 Standards Management FeaturesIn-Band Management Out-of-Band Management Compliances SafetyEmissions Immunity Appendix D Ordering Information Table D-1 TigerStack III 10/100 Products and Accessories Ordering Information 1000BASE-T GlossaryGlossary-1 Glossary-2 Glossary-3 Glossary-4 Glossary-5 Glossary-6 Index-1 Index Index-2 Index-3 Index-4 Page For Technical SUPPORT, Call