3Com 1100 User Manual

Also see for SuperStack II 1100 3C16950: User guide

3Com 1100 User Manual Manual pdf 14 page image

14 C HAPTER 1: INTRODUCING THE SWITCH 1100LEDs Table 3 lists the LEDs visible on the front of the Switch, and their statesaccording to color. For information on using the LEDs for problem solving,see “Checking for Correct Operation” on page 30.Table 3 LED behaviorLED Color IndicatesTCVR Yellow Port 1 is a Transceiver Module fitted to the rear of theSwitch.Off Port 1 is operating as a 10BASE-T port.Port Status LEDsPacket Yellow Packets are being transmitted/received on the port.Off No packets are being transmitted/received on the port.Status Green A link is present, and the port is enabled.Green flashing A link is present, but the port is disabled.Off No link is present.Expansion Module Port Status LEDsPacket Yellow Packets are being transmitted/received on theExpansion Module or Matrix Module port(s).Off No packets are being transmitted/received on theExpansion Module or Matrix Module port(s).Status Yellow A valid Expansion Module or Matrix Module isinstalled.Yellow flashing An unrecognized Expansion Module or Matrix Moduleis installed.Off No Expansion Module or Matrix Module is installed.Unit LEDs1–8 Green The Switch forms a stack with other Switch 1100 /Switch 3300 units; the LED indicates the position ofthe Switch in the stack and that a link is present. Notethat although there are eight LEDs, only four Switchunits can be stacked at present.Off The Switch is stand-alone.Power/Self Test LEDGreen The Switch is powered-up.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 Test.Off The Switch is not receiving power.16950ua.bk Page 14 Thursday, August 27, 1998 11:55 AM