support.dell.com Troubleshooting 5-3Front-Panel LED Port IndicatorsThe color and flash speed of each port’s LED, as described in Table 5-2, indicates theindividual port’s status.Initialization StepsAt power-on or reset, the following steps are executed:1. Preliminary POST diagnostics.2. VxWorks operating system initialization.3. Hardware initialization (resets, internal addresses assigned to G_Port and FL_PortASICs, serial port initialized, front panel initialized).4. Full POST.5. Universal port configuration.6. Link initialization; receiver/transmitter negotiation to bring connected ports online.Table 5-1. Front-Panel LED Status IndicatorsFront-Panel LEDs DefinitionNo light showing Power not applied.Steady power LED Normal power-on indicator.Flashing powerLEDSwitch failed POST and is not functioning, although power isapplied.Table 5-2. Front-Panel LED Port Status IndicatorsFront-Panel LEDs DefinitionNo light showing No light or signal carrier (no module, no cable) for mediainterface LEDs.Steady yellow Receiving light or signal carrier, but not yet online.Slow yellow Disabled (result of diagnostics or portDisable command).Flashes every 2 seconds.Fast yellow Error, fault with port. Flashes every 1/2 second.Steady green Online (connected with device over cable).Slow green Flashes every 2 seconds. Interswitch link; the port is physi-cally online, but the fabric remains segmented due to anincompatable switch or switch firmware.Fast green Internal loopback (diagnostic). Flashes every 1/2 second.Flickering green Online and frames flowing through port.
