SMC Networks SMC6826MPE manual Appendix a Troubleshooting, Diagnosing Switch Indicators

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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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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 aAC/DC Line to Line ±1 kV, AC/DC Line to Earth ±2 kV CE Mark Declaration of Conformance for EMI and Safety EECPower Cord Safety Safety ComplianceAustralia AS/NZS 3548 1995 Class a IiiPower Cord Set Schuko Europe Vii Environmental StatementPurpose Viii AudienceRelated Publications Table of Contents Making Network Connections Appendices Xii TablesXiii FiguresFigures XivOverview Chapter AboutPower-over-Ethernet Capability Switch ArchitectureNetwork Management Options 1000BASE-T/SFP Ports Description of Hardware10/100BASE-T Ports Port Status LED Indicators Port and System Status LED IndicatorsLED System Status LED Indicators System LED IndicatorsStack Master Button Stack Master ButtonOptional Stacking Transceiver Mode PoE/Link ButtonConnectivity Features and BenefitsPower Supply Sockets Performance ExpandabilityManagement Chapter Network Planning Introduction to SwitchingSupplying PoE Application ExamplesCollapsed Backbone Collapsed BackboneNetwork Aggregation Plan Network Aggregation PlanRemote Connections with Fiber Cable Remote Connections with Fiber CableMaking Vlan Connections Making Vlan ConnectionsApplication Notes Network Planning Selecting a Site Installing the SwitchRJ-45 Connections Ethernet CablingOptional Rack-Mounting Equipment Equipment ChecklistPackage Contents Rack Mounting MountingAttaching the Brackets Montage Rack Mounting Instructions German Attaching the Adhesive Feet Desktop or Shelf MountingInstalling an SFP Transceiver Installing an SFP TransceiverInstalling a Stacking Transceiver Stacking SwitchesConnecting Switches in a Stack Connecting Switches in a StackStacking Switches Power Socket Connecting to a Power SourceSerial 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 SwitchesNetwork Wiring Connections Network Wiring Connections Fiber Optic Devices Making Fiber Port Connections Connectivity RulesMbps Gigabit Ethernet Collision Domain 1000BASE-T Cable RequirementsMaximum 1000BASE-T Gigabit Ethernet Cable Length Maximum 1000BASE-SX Gigabit Ethernet Cable LengthsMbps 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 InstallationStack Troubleshooting Twisted-Pair Cable and Pin Assignments Appendix B CablesTable B-1 10/100BASE-TX MDI-X and MDI Port Pinouts 10/100BASE-TX Pin AssignmentsFigure B-2 Straight-through Wiring Straight-Through WiringFigure B-3 Crossover Wiring Crossover Wiring1000BASE-T Pin Assignments Table B-2 1000BASE-T MDI-X and MDI Port Pinouts Cable Testing for Existing Category 5 CableFiber Standards Adjusting Existing Category 5 Cabling to Run 1000BASE-TCables Physical Characteristics Appendix C SpecificationsSwitch Features Standards Management FeaturesIn-Band Management Out-of-Band ManagementCompliances SafetyEmissions ImmunityAppendix D Ordering Information Table D-1 TigerStack III 10/100 Products and AccessoriesOrdering Information 1000BASE-T GlossaryGlossary-1 Glossary-2 Glossary-3 Glossary-4 Glossary-5 Glossary-6 Index-1 IndexIndex-2 Index-3 Index-4 Page For Technical SUPPORT, Call