3Com 3C17700 - SuperStack 3 Switch 4900 Getting Started Manual

Also see for SuperStack 3 4900: Datasheet Getting started guide User guide Datasheet User guide

Contents

3Com 3C17700 - SuperStack 3 Switch 4900 Getting Started Manual Manual pdf 17 page image

Switch — Front View Detail 17LEDs 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 “Checking for Correct Operation of LEDs” on page 27.Table 4 LED behaviorLED Color IndicatesPort LEDsPacket Yellow Packets are being transmitted/received on the port.Off No packets are being transmitted/received on the port.Status Green A high speed (1000 Mbps) link is present, and the portis enabled.Green flashing A high speed (1000 Mbps) link is present, but the portis disabled.Yellow A low speed (100 Mbps on 4900, 10/100 Mbps on4924/4950) link is present, and the port is enabled.(Not applicable on 4900 SX.)Yellow flashing A low speed (100 Mbps on 4900, 10/100 Mbps on4924/4950) link is present, but the port is disabled.(Not applicable on 4900 SX.)Off No link is present.Module LEDsPacket Yellow Packets are being transmitted/received on the port.Off No packets are being transmitted/received on the port.Status Green The Module is installed and supported. The Link Statushas been determined for a single port Module.Yellow The Module is installed and supported. The Modulehas multi-ports or there is no link for a single portModule.Yellow flashing The Module is installed but not supported. Note thatthe Switch will continue to operate normally.Yellow flashing(fast)A port on the Module has failed POST and has beenautomatically disabled.Off The Module is not installed.Unit LEDs1–4 Green Determines the identity of the Switch wheninterconnected to another Switch to create an XRNDistributed Fabric and that a link is present.Off A fault has occurred.Power/Self Test LEDGreen The Switch is powered-up and operating normally.