3Com XLPCI manual Troubleshooting, Running Diagnostic Programs

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3	TROUBLESHOOTING
	INSTALLATION PROBLEMS

This chapter explains how to use troubleshooting techniques and 3Com diagnostic programs to isolate and solve problems that may occur when you install the 3C900B NIC.

If you have trouble installing your 3C900B NIC, follow these basic troubleshooting tips before you run the diagnostic programs.

CAUTION: Before inserting or removing the NIC from the PC, turn the PC power off.

■Check the NIC installation by reviewing Chapter 1. Make sure that the NIC is seated correctly in the slot. Check for speciﬁc hardware problems, such as broken traces or loose or broken solder connections.

■Inspect all cables and connections. Check the length and rating of the cable. Make sure that the cable complies with 10BASE-T recommendations.

■Make sure that you are running the latest BIOS for your PC. If your BIOS has not been upgraded in the previous 12 months, contact your PC manufacturer to obtain the current version of your BIOS software.

■Replace the failed NIC with a working NIC and run the diagnostic tests again, using the same option settings as those used on the failed NIC. If the working NIC passes all tests, the original NIC is probably defective. For information on product repair, see Appendix D.

Running Diagnostic Programs

This section provides information about how to run 3Com diagnostic programs to resolve problems that may occur during NIC installation. If you are running DOS, Windows 3.x, Windows for Workgroups, or Windows NT 3.51, use the 3Com DOS diagnostic program. If you are running Windows 95 or Windows NT 4.0, use the 3Com NIC Diagnostics program.

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Contents EtherLink XL PCI 10 Mbps Network Interface Cards User Guide 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Changing Configuration Settings Troubleshooting Network Connection Problems Page Figures Tables About this Guide Finding Speciﬁc Information in This GuideIf you are looking for Turn to Icon Description ConventionsConvention Description Bold-face typeNetwork Interface Card InstallingPreparing for Installation NIC Model Cable Connector Transceiver Network SegmentMaximum Inserting the NIC 2Installing the 3C900B NIC RJ-45 Port Connecting to the NetworkBNC Port 4Connecting to the BNC Port on the 3C900B-COMBO NICAUI Port 5Connecting to the AUI Port on the 3C900B-COMBO NICMeaning RJ-45 Interpreting the Link LEDState OffWindows Network DriverSpeciﬁed ﬁelds of the Identiﬁcation tab screen, enter Windows 95 BuildEnter your user name and password, and then click OK Click CloseClick Yes Windows 95 OSR2 Insert EtherDisk diskette 2 in drive a and click NextClick Finish Windows 95 prompts you to reboot Windows NT Conﬁrming InstallationWindows NT Click the Adapters tabClick Add 8CHAPTER 2 Installing the Network Driver Click Add Adapter Click Close Click OK in the Network Settings windowRunning AutoLink Software Novell NetWare Client DriverNetWare Novell NetWare Server DriverSave and exit the ﬁle, and then reboot the server NetWare 4.10Multiple NICs 3c90xcfg.exe Network Text File Name Network Driver Name Operating System Supported Network DriversRunning Diagnostic Programs Troubleshooting3Com NIC Diagnostics Program 3Com DOS Diagnostic ProgramRunning NIC Tests Double-click the 3Com icon in the Windows system tray13Com NIC Diagnostics General Screen Click the Diagnostics tabRunning the Echo Test Click StartOn both PCs On the responding PCOn the sending PC Close all open windows when the Echo test is ﬁnished 63Com NIC Diagnostics Support Screen 3Com Support ServicesClick the Support tab Accessing the Help SystemWindows 95 and Windows NT Removing NIC SoftwareQuestionAnswer Frequently Asked QuestionsQuestion Answer Make sure that your IP protocol does not compute the CRC Fast IP is designed to bypass the router, particularly where Page Option Default Setting Available Settings Changing Configuration SettingsUsing the DOS Conﬁguration Program Running the 3Com NIC Diagnostics ProgramDisplaying Conﬁguration Settings Running the 3Com NIC Diagnostics Program 33Com NIC Diagnostics Properties Screen Changing Conﬁguration SettingsEnabling Pace Support 43Com DynamicAccess Setup ScreenPage Specifications SpeciﬁcationsCabling Requirements Twisted-Pair Cable 10BASE-T OperationCategory Use 10BASE-T Speciﬁcations RJ-45 Connector Pin AssignmentsPage Operational Settings Fifo Packet ThresholdConcurrent UDP Streams Option Descriptions Disable Switch Packet PrioritizationLow-Priority Ratio Natural Packet IntervalDisable Receive Packet Buffering Changing Operational SettingsChanging Ranges and Protocols Troubleshooting Network Connection Problems Eliminating Potential Causes of ProblemsConnect a straight-through cable from the PC to the hub Crossover cable Troubleshooting Hubs with Crossover CableSupport from Your Network Supplier Online Technical Services3Com Bulletin Board Service Access by Analog ModemWorld Wide Web Site Access by Digital Modem 3ComFacts Automated Fax Service408 654 408 727Page Numbers IndexLANSRV.TXT 10BASE-TA-3 Page 3Com Corporation Limited Warranty FCC Class B Statement FCC Declaration of Conformity