3Com SuperStack 3 4400 SE 3C17206 Getting Started Manual

Also see for 3C17204: Datasheet Getting started guide Getting started guide Getting started guide Implementation guide

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3Com SuperStack 3 4400 SE 3C17206 Getting Started Manual Manual pdf 17 page image

Switch 4400 — Front View Detail 17connector that allows both the transmit and the receive fibers to beconnected in the same space as an RJ-45 port.LEDs Table 4 lists LEDs visible on the front of the Switch, and how to read theirstatus according to color. For information on using the LEDs for problemsolving, see “Solving Problems Indicated by LEDs” on page 58.Table 4 LED behaviorLED Color IndicatesPower/Self Test LEDGreen The Switch is powered-up and operating normally.Green flashing The Switch is either downloading software or is initializing(which includes running a Power On Self Test).Yellow The Switch has failed its Power On Self TestorA port has failed and has been automatically disabled. Youcan verify this by checking that the Port Status LED is quicklyflashing Yellow. If a port fails the Switch passes its Power OnSelf Test and continues to operate normally.Off The Switch is not receiving power or there is a fault with thePower Supply Unit.Port LEDsPacket Green Full duplex packets are being transmitted/received on theport.Yellow Half duplex packets are being transmitted/received on theport.Off No packets are being transmitted/received on the port.Status Green A high speed (100 Mbps) link is present, and the port isenabled.Green flashing A high speed (100 Mbps) link is present, but the port isdisabled.Yellow A low speed (10 Mbps) link is present, and the port isenabled (not 4400 FX).Yellow flashing A low speed (10 Mbps) link is present, but the port isdisabled (not 4400 FX).Yellow flashing(fast)The port has failed and has been automatically disabled. TheSwitch passes its Power On Self Test and continues tooperate normally even if one or more ports are disabled.Off No link is present.DUA1720-3AAA07.book Page 17 Wednesday, March 17, 2004 1:14 PM