Black Box LGB6026A, LGB6001C, LGB6050A Power and Cooling Problems, Installation, IN-BAND Access

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CHAPTER A Troubleshooting

Power and Cooling Problems

POWER AND COOLING PROBLEMS

If the power indicator does not turn on when the power cord is plugged in, you may have a problem with the power outlet, power cord, or internal power supply. However, if the unit powers off after running for a while, check for loose power connections, power losses or surges at the power outlet. If you still cannot isolate the problem, the internal power supply may be defective.

INSTALLATION

Verify that all system components have been properly installed. If one or more components appear to be malfunctioning (such as the power cord or network cabling), test them in an alternate environment where you are sure that all the other components are functioning properly.

IN-BAND ACCESS

You can access the management agent in the switch from anywhere within the attached network using Telnet, a web browser, or other network management software tools. However, you must first configure the switch with a valid IP address, subnet mask, and default gateway. If you have trouble establishing a link to the management agent, check to see if you have a valid network connection. Then verify that you entered the correct IP address. Also, be sure the port through which you are connecting to the switch has not been disabled. If it has not been disabled, then check the network cabling that runs between your remote location and the switch.

NOTE: The management agent accepts up to four simultaneous Telnet sessions. If the maximum number of sessions already exists, an additional Telnet connection will not be able to log into the system.

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Contents Customer Support Information Blackbox.com Blackbox.com INS Tallation Guide FCC Class a Compliances and Safety StatementsIndustry Canada Class a Japan Vcci Class aCE Mark Declaration of Conformance for EMI and Safety EEC PSE a Larm Safety ComplianceFrance and Peru only Power Cord SafetyPower Cord Set France et Pérou uniquement Sein und die Aufschrift HAR oder Basec tragen Environmental Statements END of Product Life Span Compliances and Safety Statements Purpose About this GuideAudience ConventionsRevision History Contents Specifications TroubleshootingMaking Network Connections CablesTables Tables Figures Figures Overview IntroductionLGB6050A Switch ArchitectureDescription of Hardware Network Management OptionsSFP Transceiver Slots Gigabit Ethernet Module Slots Stacking PortsPort and System Status Leds System LEDs Optional Redundant Power Supply Power Supply SocketChapter 10GBASE SFP+ Module Connectivity Features and BenefitsExpandability PerformanceManagement Introduction Network Planning Introduction to SwitchingCollapsed Backbone Application ExamplesNetwork Aggregation Plan Network Aggregation PlanRemote Connections with Fiber Cable Remote Connections with Fiber CableMaking Vlan Connections Making Vlan ConnectionsIP Routing for Unicast Traffi Using Layer 3 RoutingApplication Notes Network Planning Selecting a Site Installing the SwitchRJ-45 Connections Ethernet CablingEquipment Checklist Package ContentsOptional RACK-MOUNTING Equipment Rack Mounting MountingAttaching the Brackets Attaching the Adhesive Feet Desktop or Shelf MountingInstalling an Optional Module Installing AN Optional Module Into the SwitchInserting an SFP Transceiver into a Slot Installing AN Optional SFP TransceiverConnecting Switches in a Stack Making Stacking Connections Stacking TopologiesPower Socket Connecting to a Power SourceWiring MAP for Serial Cable Connecting to the Console PortInstalling the Switch Installing the Switch Connecting to the Console Port Making Network Connections Connecting Network DevicesTWISTED-PAIR Devices Cabling GuidelinesMaking Twisted-Pair Connections Connecting to PCS, SERVERS, Hubs and SwitchesNetwork Wiring Connections Fiber Optic SFP Devices Network Wiring ConnectionsMaking Fiber Port Connections Making Network Connections Gbps Fiber Optic Connections Connecting to an SFP+ Transceiver Connectivity Rules 1000BASE-T Cable RequirementsGbps Ethernet Collision Domain Micron single 40 km 24.85 miles Mode fiber Mbps Ethernet Collision Domain Cable Labeling and Connection RecordsMaking Network Connections Diagnosing Switch Indicators TroubleshootingRPU LED Diagnosing Power Problems with the LedsPower and Cooling Problems InstallationIN-BAND Access Stack Troubleshooting TWISTED-PAIR Cable and PIN Assignments Cables10BASE-T/100BASE-TX PIN Assignments STRAIGHT-THROUGH WiringStraight-through Wiring Crossover Wiring1000BASE-T PIN Assignments Cable Testing for Existing Category 5 CableFiber Standards Adjusting Existing Category 5 Cabling to RUN 1000BASE-TNon-Zero Dispersion-Shifted Physical Characteristics SpecificationsPorts Network InterfaceAC Input LedsSwitch Features Standards Management FeaturesIN-BAND Management OUT-OF-BAND Management10GBASE Extender Module SFP+ CompliancesCE Mark Standards Glossary 10GBASE-LR 10GBASE-SRCSMA/CD Ethernet IeeeFast Ethernet FULL-DUPLEXMIB LEDTIA UTPVirtual LAN Vlan Glossary Numerics IndexDiag Black Box Tech Support FREE! Live /7