3Com 3C17708-US - Switch 4050 Getting Started Manual

Contents

18 CHAPTER 1: INTRODUCING THE 3C OM S WITCH 40X0 F AMILYUnit Status LEDGreen The Switch is powered-up and operating normally.Green flashing The Switch is either downloading software or isinitializing (which includes running a Power On SelfTest).Yellow The Switch has failed its Power On Self TestorA port has failed and has been automatically disabled.You can verify this by checking that the Port Status LEDis quickly flashing Yellow. If a port fails the Switchpasses its Power On Self Test and continues to operatenormally.Off The Switch is not receiving power or there is a faultwith the Power Supply unit.Layer 3 LEDGreen The Switch software supports Layer 3.Off The Switch software does not support Layer 3.PSU LEDs (Front of Switch)*Green PSU fitted and enabledRed PSU fitted and not operationalRed flashing PSU has shut down due to over-heatingOff No PSU fittedPSU LED (PSU Module)Green The PSU module is installed and is supplying DC powerto the Switch.Off The PSU module is not supplying power and may haveshut down due to a fault.Fans (F = Front)Red One or both fans have failedRed flashing Fan Tray has been removedOff Fan Tray fitted and enabled.Fans (R = Rear)Red One or both fans have failedRed flashing Fan Tray has been removedOff Fan Tray fitted and enabled.LED Color IndicatesDUA1770-9AAA05.book Page 18 Tuesday, September 9, 2003 2:01 PM