3Com 10/100BASE-T4 PCI manual 100BASE-T Standard, 100BASE-TX Operation

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A-4 APPENDIX A: CABLING

100BASE-T Standard

The 100BASE-T standard defines a network architecture based on the 10BASE-T standard that retains almost all of the original IEEE 802.3 Ethernet specification, while greatly increasing the network’s overall throughput.

100BASE-T has the following similarities to 10BASE-T:

Uses the same CSMA/CD access method and MAC functions

Retains a hub-based architecture

Runs over unshielded twisted-pair or fiber cabling

Employs the same network management tools

The maximum span of a 100BASE-T network using only twisted-pair cable is 205 meters (672.4 feet).

100BASE-T media specifications allow Fast Ethernet to run on the most common Ethernet wiring, including Categories 3, 4, and 5 unshielded twisted-pair, shielded twisted-pair, and fiber.

100BASE-TX Operation

100BASE-TX designates the IEEE 802.3 specification for

100 Mbps with CSMA/CD over two pairs of Category 5 UTP or STP wire. Most 100BASE-TX equipment only supports

100 ohm UTP cable. The pairs of wires used for transmitting and receiving signals are the same as those used for 10BASE-T. This means that the same cabling used for 10BASE-T can be used for 100BASE-TX with no change to cable termination. Also, the connectors used for 100BASE-TX at the hub or end station are the common Category 5 certified RJ-45 connector for UTP.

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Contents Adapters Fast Etherlink Parallel TaskingNetwork Adapter User Guide3Com Corporation 5400 Bayfront Plaza Santa Clara, California Lifetime Warranty Asia Contents Configuring Software Settings Cispr B Compliance Figures Tables Introduction How to Use This GuideAbout this Guide Print Autolink.log ConventionsIntroduction Adapter automatically senses and switches to either10/100BASE-T4 PCI Adapter Adapter Features PCI Technology 3C59X EtherDisk diskette version 5.1 or above Installing the AdapterInspecting the Adapter Installing the Adapter Installing the Boot PromPCI Computer with PCI and Eisa Slots Connecting to the NetworkRJ-45 connector Connecting to the Network Drivers Summary of Driver Loading ProceduresLoading the Network Accessing DOS Using the EtherDisk DisketteUsing Windows This confirms the adapter’s installation Confirming Adapter Installation for WindowsSystem Properties box appears, detailing your system setup Name of the installed 3Com adapter appears, as followsAutoLink Requirements Using NetWare ODIOne Adapter in a Client Alternatively, at the prompt, type AutoLink InstallationAt the prompt, type Read the screen and press Enter ESC=CancelMultiple Adapters in a Client FEA0 Main menu appears Select Configuration and Diagnostic Program and press EnterOne or More Adapters in a Server Loading Ndis DriversFollow the instructions displayed in the subsequent screens Updating Ndis DriversAuto Select Media Type Desktop Management Interface Transcend PC Link SmartAgent Driver AgentsTroubleshooting with the Diagnostic Tests Performing Troubleshooting Diagnostic TestsFast EtherLink 10/100BASE-T4 PCI adapter After performing the diagnostic tests, reboot your computerBefore Running the Tests Types of TestsRunning the Group 1 Tests Starting the Diagnostic ProgramRunning the Group 3 Test Setting Up an Echo Server 3C59XCFG Getting Help If a Test Fails To print the file, type To change the test parameters, follow these steps Changing the Test SetupMiscellaneous Checks LED LEDsAdapter Cabling Requirements Pin assignments for the RJ-45 connectorWhen properly connected to a 10BASE-T network, CablingTwisted-Pair Cable 10BASE-T Specifications 10BASE-T Operation100BASE-TX designates the Ieee 802.3 specification for 100BASE-T Standard100BASE-TX Operation 100BASE-FX Operation 100BASE-T4 OperationFigure A-1 shows the RJ-45 connector pin assignments RJ-45 Connector Pin AssignmentsSettings Type at the prompt Changing Software SettingsTo change the software option settings, follow these steps Select Adapter Installed Adapters Press Tab to highlight OK. Press Enter Continue this procedure with any of the other options\CONFIG\3C595.SET Adapter Specifications SpecificationsTechnical Support On-line Technical Services3Com Bulletin Board Service Press Return to see the 3ComForum main menu World Wide Web Site3ComForum on CompuServe To use 3ComForum Log on to CompuServeLocal numbers are available within the following countries 3ComFacts Automated Fax ServiceSupport from Your Network Supplier To obtain an RMA number, call or fax Returning Products for RepairDetails about recent configuration changes, if applicable 100BASE-T GlossaryBus Auto Select Media TypeEMM386 EIA/TIAMAC STP Numerics IndexDOS Ndis Network Driver Optimization option setting B-2 Windows 3.X 3-3 Windows Limited Warranty 3Com Corporation Bayfront Plaza Interference Handbook CE Notice