Nortel Networks 400-S manual MDI/MDI-X autosensing capability, LEDs

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Chapter 4 Seven-port autosensing switch specifications 53

MDI/MDI-X autosensing capability

When you plug an Ethernet cable into a port, the switch autosenses whether the cable is MDI-X (normal, or straight-through) or MDI (uplink, or crossover). This feature enables you to connect the Instant Internet unit to another Ethernet connection regardless of whether you are using a straight-through cable or a crossover cable.

Note: Observe standard networking guidelines when you use the seven-port switch to install or connect an Instant Internet 400-S unit to additional devices.

LEDs

The LEDs on the Instant Internet 400-S unit switch provide information about the performance and status of the switch including link activity, data transmission speed, and duplex mode.

For more information on LEDs, refer to Chapter 6, “LEDs: support and diagnostic functions,” on page 61.

Setting Up the BayStack Instant Internet 400-S Unit

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Contents Setting Up the BayStack Instant Internet 400-S Unit USA requirements only Japan/Nippon requirements only Modular components used in this assembly Setting Up the BayStack Instant Internet 400-S Unit UL listing/C-UL listing NT1 Instant Internet Isdn Device Nortel Networks NA Inc. software license agreement Setting Up the BayStack Instant Internet 400-S Unit 209375-A Contents Chapter Seven-port autosensing switch specifications Appendix a Technical specifications Contents 209375-A Figures Figures 209375-A Tables Tables 209375-A Before you begin PrefaceFollowing acronyms are used in this manual AcronymsRelated publications Preface How to get help Preface 209375-A Instant Internet package Chapter IntroductionAvailable options Requirements and compatibility Introduction 209375-A Preparing for Internet access Chapter Installation preparationMaking decisions Selecting an Internet service providerInstallation checklist Installation checklistInstallation preparation Installation checklist ISP Information Installation worksheetIs Isdn Dial backup available if requested Getting to know your Instant Internet 400-S unit Chapter Instant Internet 400-S hardware installationDIP switches see , DIP switch settings, on Rear panel of the Instant Internet 400-S unit InterfacesEthernet interfaces Isdn S/T Power cordsLists specifications for international power cords Achtung Bitte sofort lesen Attenzione Leggere attentamente Setting the voltage selector switchInstant Internet quick installation Instant Internet 400-S hardware installation Instant Internet 400-S hardware installation Mounting your Instant Internet unit in a rack Removing screws from cover of Instant Internet 400-S unit 9863FB 10045FA Instant Internet 400-S hardware installation 209375-A Instant Internet 10/100 Ethernet switch overview Chapter Seven-port autosensing switch specificationsRJ-45 10BASE-T/100BASE-TX Ethernet ports Switch featuresLEDs MDI/MDI-X autosensing capabilitySeven-port autosensing switch specifications 209375-A DIP switches Chapter DIP switch settingsSwitch settings for special configurations Switch settings for normal operationDIP switch settings Refer to Switch settings for special configurations on Resetting your Instant Internet unitDIP switch settings DIP switch settings 209375-A Interpreting Instant Internet LEDs Chapter LEDs support and diagnostic functionsLEDs support and diagnostic functions LEDs 1 through 8 and Power LED at power-up sequenceLED status and appearance during operation LEDs 1 through 8 and the Power LED during operationSeven-port switch port status LEDs Chapter Out-of-band management support Configuring a direct connection Connecting a PC to the Instant Internet unitHyperTerminal Connection Description dialog box HyperTerminal Connect To dialog box Command prompt Configuring modem connection settings Connecting a modem to a PCHyperTerminal Connection Description dialog box Ats0=1&w\r Connecting a modem to the Instant Internet unit Connecting to an Instant Internet unitOut-of-band management support 209375-A Electrical specifications Appendix a Technical specificationsPhysical specifications Environmental specifications Cable part numbers Appendix B Adapter cable pinout diagramsDirect access adapter cables Adapter cable 35 adapter cable pinout diagramDCE adapter cable 21 DCE adapter cable diagramNull modem adapter PC-to-PC cable Remote access adapter cablesModem adapter cable Modem adapter cable pinout diagramAppendix B Adapter cable pinout diagrams 209375-A Numbers SymbolsIndex Index Index