Allied Telesis AT-9424T/POE, AT-9408LC/SP manual System Fault LED is Blinking

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Chapter 3: Troubleshooting

System Fault LED is Blinking

If the system FAULT LED is blinking, no action is required. A blinking FAULT LED could indicate that a new version of the management software is being downloaded to the switch or the switch’s is updating the active boot configuration file. The LED stops blinking after the switch has completed the download or updating the boot configuration file.

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Contents Installation Guide Page Electrical Safety and Emissions Standards Translated Safety Statements Contents Page Preface Product Documentation Where to Go First Starting a Management Session Safety Symbols Used in this Document Symbol Meaning DescriptionWhere to Find Web-based Guides Management Software Updates Contacting Allied TelesisPreface Overview ChapterOverview AT-9408LC/SP Switch DescriptionsAT-9424T/GB Switch Shows the front and back panels of the AT-9424T/GB SwitchAT-9424T/SP Switch 10/100/1000Base-T Ports Port and SFP System Slot LEDsShows the front and back panels of the AT-9424T Switch AT-9424T/POE Switch 10/100/1000Base-T POE Ports Port and SFP System Slot LEDsAT-9424Ts Switch Shows the front and back panels of the AT-9424Ts SwitchAT-9424Ts/XP Switch SFP Slots XFP SlotsAT-9448T/SP Switch 10/100/1000Base-T Ports Card SlotAT-9448Ts/XP Switch Compact Flash 10/100/1000Base-T Ports Card SlotConnector Type Speed Duplex Mode 10/100/1000Base-T Twisted Pair PortsCable Type Auto-MDI/ MDI-X Port Pinouts Maximum DistanceConnector Type Speed Maximum Distance Cabling Fiber Optic PortsGbic Transceiver Slots Gbic TransceiverSFP Transceiver Slots Illustrates an SFP transceiverXFP Transceiver Slots Shows an example of an XFP transceiverRedundant Twisted Pair Ports Model Ports and SlotsAT-9400 Series Gigabit Ethernet Switches Installation Guide Compact Flash Card Slot Port LEDs 10/100/1000Base- T Twisted Pair Port LEDsFunction State Description Fiber Optic Port Transceiver Slot LEDs System LEDs State DescriptionStack LEDs MstrStack Installation Guide Expansion SlotTerminal Port Power Over Ethernet Minimum Power Maximum Power Class AT-RPS3204 Redundant Power Supply AC Power Connector Installing the Switch Reviewing Safety Precautions AT-9400 Series Gigabit Ethernet Switches Installation Guide Installing the Switch Selecting a Site Twisted Pair and Fiber Optic Cable Specifications MaximumSpeed Cable Type Fiber Optic Cable Specifications Cable Type Maximum OperatingUnpacking the Switch Installing the Power Cord Retaining Clip AC Switches Only Inserting the Retaining Clip into the Retaining BracketInstalling the Switch in a Rack Attaching Rack-Mount BracketsMounting the Switch in a Rack Installing Optional Transceivers Installing a Gbic TransceiverInstalling an SFP Transceiver SFP Handle Installing an XFP Transceiver Installing an XFP TransceiverInstalling the Switch Cabling the Twisted Pair or Fiber Optic Ports Applying AC Power Connecting the AC Power Cord240VAC Starting a Local Management Session 9408AT-9400 Series Gigabit Ethernet Switches Installation Guide Warranty Registration Troubleshooting Power LED is Off Twisted Pair Port Link LED is Off Fiber Optic Port Link LED is Off Transceiver is Installed but the Status is Not Present System Fault LED is Blinking System Fault LED is Steadily On Cannot Establish a Local Out-of-Band Management Session Switch Functions Intermittently Troubleshooting Physical Specifications AT-9400 Series Dimensions H x W x D SwitchAppendix a Environmental Specifications AT-9400 Series Weight SwitchPower Specifications CertificationsPin Signal RJ-45 Twisted Pair Port PinoutsPinout Pair AT-9408LC/SP Switch 1000Base-SX Port Specifications Property ValueRPS 21-pin D-combo Port and Connector Pinouts RJ-45 Style Serial Terminal Port PinoutsPin Definition