RJ-45 Loopback Plug, UTP External Loopback Plug | 3Com 155 PCI

6-18 CHAPTER 6: DIAGNOSTICS AND TROUBLESHOOTING

RJ-45 Loopback Plug

To construct an external loopback plug for use in testing the unshielded twisted-pair version of the ATMLink PCI NIC (3C975-UTP), use an RJ-45 unshielded male connector.

Wire the loopback plug so that the transmit output of the NIC (connector pins 1 and 2) is directly wired to the NIC’s receive input (connector pins 7 and 8, respectively), as shown in Figure 6-12. See Appendix A for a complete table of pinouts for the 3C975-UTP NIC.

Transmit (–) 2

Transmit (+) 1

Receive (+) 7

Receive (–) 8

RJ-45 unshielded

male connector

Figure 6-12 UTP External Loopback Plug

Image 106

3Com 155 PCI manual RJ-45 Loopback Plug, UTP External Loopback Plug

Contents

Atmlink 155 PCI 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Lifetime Warranty Walker Street Asia3Com Mediterraneo Srl Level Contents Elan Allocation Loading the Server Driver Before You Begin VCC Statistics Starting the Diagnostic UtilityChanging Action on Error Running the External Loopback Test World Wide Web Site Returning Products for Repair B-5 Network Settings Window 3C975-F ATMLink NIC Installed in the ChassisVii NIC information Window Additional Driver Actions Screen Adding an AdditionalATMLink Utility Windows Viii Tables 3C975 ATMLink NIC NetWare Install Utility ConﬁgurationLED Activity About this Guide How to Use This GuideIntroduction Conventions Commands Product Features Introduction 3C975-F and 3C975-UTP ATMLink NICs Emulated LAN Elan Overview Software Descriptions Network Driver Description Diagnostic Utility Description Only one LEC per NIC is supported in NetWare ATMLink Utility Description An ATMLink utility for Microsoft Windows NT and for Installing the 3C975 ATMLink NIC Hardware InstallationInstallation Overview This chapter describes the procedure for installing Save the screw for later in this section Removing the Expansion Slot Cover Press down gently and ﬁrmly on the NIC to seat it properly Replace the system cover Physical installation of the ATMLink NIC is now complete SC Duplex and RJ-45 Connectors Installation Driver Installation Overview Memory Requirements Driver Installation RequirementsHardware Requirements Round up the result to the ﬁrst integral multiple Memory Requirement Scenario Software RequirementsATMDisk diskette for Windows NT Resilient Server Links Overview Rules for Using Resilient Server LinksPCI slot number of each installed ATMLink NIC NIC Information Requirements Driver Installation Summary for Experienced Users Before You Begin Windows NT Driver Installation Maximum Frame Size Resilient Server Links Part Two NIC and Elan ConﬁgurationLAN Type Restart Microsoft Windows NT Click Add Adapter Installing the Network DriverNIC Detection, Resilient Server Links, and Elan Allocation Click Continue Add Network Adapter Select 3Com ATMLink PCI NIC 3C975 and click OK Select OEM Option Window Installing the Network Driver 3Com ATMLink Installation Window NIC and Elan Conﬁguration From the drop-down list MAC address after Initial installationUNI ATM switch setting VPI/VCI Range Bits/12 bits To conﬁgure NICs and ELANs, follow these steps Installing the Network Driver Enter the Elan name Elan Conﬁguration Window All entries and edits to the 3Com ATMLink Installation 10 TCP/IP Conﬁguration Window with Sample Entries Repeat substeps a through f for each Elan Verifying Driver Installation and Conﬁguration 11 Restart Prompt for Adapter Driver Enabling and Disabling ELANs Removing an Elan Adding ELANs 12 Select OEM Option Window 13 NIC Installation Dialog Box 15 3Com ATMLink Installation Window Showing Additional ELANs Adding Snmp Support 3Com ATMLink Snmp LEC MIB Agent, as shown in Figure Adding Snmp Support NET Ware Server Driver Netware Server Driver Installation Driver Installation Requirements Rules for Using Resilient Links Implementing Resilient Server Links in NetWare Where # of buffers= 64 * number of ATMLink NICs Loading the Server Driver Driver Installation Procedure Installation Options screen appears, as shown Driver Options screen appears, as shown in Figure Select Driver optionsSelect Conﬁgure network drivers Choose Select a driver Select a Driver Screen Select a Driver to Install Screen Conﬁguring LECs and Resilient Server Links Switch setting Mode ManualLES User Part No default Signaling Version UNI Conﬁguring the TCP/IP Network Interface Selecting the Card Number Enter the Elan name For example Select the VPI/VCI range Select Save parameters and load driver 10 Prompt to Add Additional LEC Select a Driver screen appears, as shown in Figure 12 Select a Driver Screen NetWare Card Numbers and Multiple Physical NICs Select LAN/WAN Information from the Available Options menu At the system prompt, typeNetWare Monitor screen appears To verify that the driver has been properly loaded on Editing the AUTOEXEC.NCF File Each LEC requires a separate load and bind command 13 Sample of AUTOEXEC.NCF File NIC, 4 NICs per system CardnumCard number Channel Elan name Ascii string System use the same signaling Lecs user part Is defaultSigversion =UNI Signaling version =UNI v3.1 default NetWare Keywords cont’d Removing an LEC from NetWare Installation Options screen shown in -1 appearsSelect NCF ﬁles options Installing and Running the ATMLink Utility for Windows NT Atmlink Utility ATMLink Utility Field Descriptions Elan Information Explains the Windows NT Elan information ﬁelds Windows NT Connection Statistics Fields Displayed Value NIC Connection StatisticsNIC connection statistic ﬁelds are explained in Table RxBytes NIC Information PCI Slot Number ResetDescribes the NIC information ﬁelds IRQ Level Reset Option for Windows NT From the server prompt, type NIC number shown in -6 is the NetWare card number ATMLink utility main menu appears, as shown in Figure ATMLink Utility Menu Options NetWare NIC Information Screen Slot Number VCC StatisticsNetWare NIC Information Fields Displayed Value Bus Number Maximum VCC Describes the NetWare VCC statistics ﬁelds Elan Statistics 10 Currently Conﬁgured LECs Screen Describes the ﬁelds displayed in the LEC Statistics screen Reset NICQuit Select Quit to exit the ATMLink utility for NetWare Troubleshooting DiagnosticsOverview When to Use the Diagnostic Utility Starting the Diagnostic Utility How to Use the Diagnostic UtilityDiagnostic utility cannot be run from an MS-DOS window Navigating Within the Diagnostic Utility Diagnostic utility main screen appears, as shown Test Setup Screen Running the Internal Tests Run Tests Screen Running the External Loopback Test External Loopback Test Screen Viewing Test Results Click Start to run the External Loopback Test NIC Statistics Individual Test Information Changing the Test Setup Enabling and Disabling Individual Tests File Options Changing Action on ErrorChanging the Number of Repetitions File Options Sample of Diagnostic Test Report File What to Do If a Test Fails Make sure that the 3C975 ATMLink NIC is in a bus master slot Constructing Loopback Plugs Fiber-Optic Loopback Plug Constructing Loopback Plugs RJ-45 Loopback Plug 12 UTP External Loopback Plug Link LED Specifications Hardware Standards Compliance Network ConnectionsEnvironment RJ-45 Connector Pinouts Table A-1 lists the pin assignments for the RJ-45 connector Online Technical Services Technical Support Brazil Up to 14400 bps World Wide Web SiteCall the telephone number nearest you Japan Up to 14400 bps To use 3ComForum Log on to CompuServe 3ComFacts Automated Fax Service3ComForum on CompuServe Press Return to see the 3ComForum main menu Support from Your Network Supplier Returning Products for Repair To obtain an RMA number, call or fax Glossary ATM Forum Emulated LAN. See Lane CellEnd station Kilobytes bytes LEC MIB VBR VPI Index 3C975 NIC hardware and software featuresNumerics NetWare 4-12 Windows NT 3-14 LECs Home Card, NetWare 4-11 IlmiNetWare 4-12 Windows NT Maximum number per NIC 1-3, 1-5 removing, NetWare Windows NT 3-3 resetting Resetting NetWare 5-13 Windows NTRJ-45 Loopback Test Troubleshooting tips URL B-2 Limited Warranty FCC Class a Verification Statement Interference Handbook Page For units of the Department of Defense