18 Chapter 1 Introducing the 1424T switch316867-A Rev 00Passport 1424TThe 1424T switch has 24 Fast Ethernet ports and two slots that accept GBIC fiberoptic modules. You can connect these Fast Ethernet ports to remote networkdevices at either 10 Mb/s or 100 Mb/s. They can automatically detect the highestcommunication speed and the duplex state (full- or half-duplex) that the remotenetwork device can accept and then configure themselves to provide the highestspeed connection possible.In addition, the 24 Fast Ethernet ports can detect whether a cross-over orstraight-through Ethernet cable has been used, and automatically connect thereceive and transmit twisted pair wires to the appropriate receive and transmitterminals. This means that a Fast Ethernet network connection to a remotenetwork device can use either a cross-over or a straight-through Ethernet cable,and still maintain a valid link. Figure 1 shows the front panel of the 1424T switch.Figure 1 1424T front panellThe LEDs on the front panel indicate the status of each of the:• 24 Fast Ethernet ports• two GBIC fiber optic modules• console (RS-232) portGenerally, a lit LED indicates a functioning power supply, port, or console port,while a flashing LED indicates activity on an Ethernet port. For more detailedinformation, see “Understanding the LEDs” on page 27.11058EAPassport 1424TConsole2-Port GBIC ModuleTxRxActLink|ActLinkTxRx||PowerConsole6 82 4 14 1610 125 71 3 13 159 11 21 2317 1922 2418 20LinkActLED Status10010