RJ-45 Connector Pin Assignments | 3Com 3CR990-TX-97, 3CR990-TX-95

156APPENDIX B: SPECIFICATIONS AND CABLING REQUIREMENTS

100BASE-TX Operation

100BASE-TX is the IEEE 802.3u standard for Fast Ethernet signaling over Category 5 UTP or STP wire at 100 Mbps.

Based on an extension to the IEEE 802.3 Ethernet speciﬁcation, Fast Ethernet characteristics include:

■A data rate of 100 Mbps.

■A broadcast architecture.

■A speciﬁc media-access control (MAC) scheme.

A wiring topology using 100BASE-TX speciﬁes a wiring hub, cable arranged in a star conﬁguration, and Category 5 UTP or STP wiring. Each node has a separate cable run that must not exceed 100 meters (328 ft) from the node to the hub.

RJ-45 Connector Pin Assignments

The following illustration shows the RJ-45 connector pin assignments for the EtherLink PCI NICs.

	TX
	DATA
	ACT
	10	L
	100	N
	100	K
		K

1TD+

2TD_

3RD+

6RD_

1 2 3 4 5 6 7 8

Image 156

3Com 3CR990-TX-97, 3CR990-TX-95, 3CR990SVR97, 3CR990SVR95 manual RJ-45 Connector Pin Assignments, 100BASE-TX Operation

Contents

Part No -1742-001 Published May 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Installing and Connecting the NIC Installing Dynamicaccess Software in Windows Installing Netware Client and Server Drivers Configuring the NIC Troubleshooting the NIC Ethercd Content and Navigation Technical Support About this Guide NIC/Description Model Number Conventions Icon DescriptionConvention Description Overview Product Name/Description Model Number Onboard 3XP Processor Data EncryptionLAN Encryption Software for Windows 95/98 3CR990 NIC Features High Encryption Pack for Windows 3XP Processor Advanced Server Features Load Balancing Self-Healing DriversFailover VLANs Primary failure Trafﬁc Prioritization Server Features Using Other NICs Remote Wake-UpWindows NT and Windows 2000-Planning the Conﬁguration on Remote Wake-Up Requirements Integrated Boot ROM with Managed PC Boot Agent MBA Remote Wake-Up and Multiple NIC InstallationsRemote Wake-Up Cable Desktop Management Interface DMI Hot Plug NIC Installation Remote System AlertsDhcp Server Prevention DynamicAccess LAN Agent Ofﬂine Diagnostics Windows 2000 Ofﬂoad Features Installation Overview Safety Precautions Installation Requirements RAM Installing From Diskette Installing Multiple NICsUpgrading Windows 95 to Windows Updating the Network Driver and NIC Software Making a DOS-Bootable Diskette Creating Installation Diskettes Product Registration Preparing the NIC and the Computer Follow the prompts as they appearDecide whether you want to use Remote Wake-Up Make sure that cable requirements are met Network Envi Cable Required Maximum Ronment Cable Length Installing and Connecting the NIC Replace the computer cover and plug in the power cord Carefully insert the NIC in the empty PCI slot, as shown Connecting the Remote Wake-Up Cable Connecting the cable to the NIC backplate Replace the PC cover and plug in the power cord Installing Software Installing NIC Drivers Windows Software Installation Requirements Installing the Network Driver Using the EtherCD Getting HelpWindows Windows NT Click NextClick Finish Click Add Click Close Turn the PC power on Click Yes to restart the PC You must restart your computer to complete the installation Click Yes to restart your computer New Hardware Found Update Device Driver Wizard Do one of the followingClick Yes Enter the path to the CD-ROM drive, and then click OK Verifying Successful Installation Right-click the My Computer icon, and then click Properties Windows 95 and Windows Select the Resources tab Installing the 3Com NIC Diagnostics Program Starting the 3Com NIC Diagnostics Program Double-click the 3Com NIC Diagnostics iconUpdating the Network Driver and NIC Software Restart Windows Installing Multiple NICs Windows 2000, Windows 98, and Windows Repeat the process for each additional NIC to be installed Select the Adapters tab Click AddInsert the EtherCD Close the Network screen Installing the DynamicAccess LAN Agent for a Client NIC Client PC Requirements Installing the LAN Agent Verifying Successful Installation Conﬁguring the DynamicAccess LAN AgentRestart the PC Installing DynamicAccess Software for a Server NIC Removing the DynamicAccess LAN AgentStart Windows Insert the EtherCD in the CD-ROM drive Installing DynamicAccess Software for a Server NIC Conﬁguring Groups and VLANs for a Server NIC Planning the Conﬁguration Conﬁguring Groups and VLANs for a Server NIC Number of VLANs Working With Server Features Windows Windows NT Double-click the DynamicAccess SW Server icon To disable all load balancing-ClearCreating a Group Adding NICs to a Group Specifying a Dedicated IP AddressClick the Load Balance/RSL tab Load Balance/RSL window Click Add NIC Changing an IP Address Creating a Vlan Specifying Trafﬁc Priorities Saving the ConﬁgurationClick the appropriate tab Disabling Load Balancing for a Group Changing the Primary NICRemoving a NIC from a Group Click the Load Balance/RSL tab Deleting or Editing a Vlan Displaying NIC PropertiesDisplaying Group Properties Specifying Failover from Gigabit to 10/100 PCI Troubleshooting a Load Balancing Conﬁguration Disable load balancing for the groupSymptom Tip Add 3Com server NICs to the group Changing Windows 2000 Property Settings Identifying Windows 2000 Miniport and LAN Connections Using Windows 2000 Ofﬂoad Features Enabling Ofﬂoads Value Offload Function Enabled Click Conﬁgure Installing DynamicAccess LAN Encryption Software Conﬁguring Ofﬂoads for a Group of Different NICs Minimum Installation Requirements Installing LAN Encryption Software on WindowsHardware Requirements Software Requirements Click NIC Software Click Yes to continue With the Winsock2 Setup screen displayed, click OK Click OK Enter your network password when promptedClick Yes Click OK Insert the Windows 95 CD-ROM and click OK Installing LAN Encryption Software on Windows Click Yes to continue Installing Dynamicaccess Software in Windows Adding the Entrust File Starting DynamicAccess LAN Encryption Software Viewing the Administrator’s Guide Online Uninstalling LAN Encryption Software Page Installing and Conﬁguring the NetWare Server Driver Using the Latest Support PacksNetWare Version Required Support Pack Latest patch files Obtaining NetWare Loadable Modules NetWare Version Required Support PackNetWare Server NLM Name Server Software Installation Requirements Before installing NICs After installing two NICsNetware Packet Receive Buffers Slot Numbers for Multiple NICs Installing the NetWare 3.12 Server Driver Obtaining Slot Numbers Save and exit the ﬁle, and then reboot the server Press Enter Press Insert againSelect 3C99x, and then press Enter Type the name of the NIC and press Enter Press Enter to save the changes Press Esc to ExitSelect Reinitialize System Loading the 3Com EtherCD Press Enter to select the driver Specifying the Slot Number Loading the Driver Installing Multiple Server NICs Load 3C99X.LAN slot=slot1 NAME=name1 FRAME=frametype1 Installing Server Features Boot the NetWare server with the -na optionVerifying the PCI Slot Number From the Conﬁguration Options screen select Product options Enter this command Conﬁguring GroupsMake the following changes to the AUTOEXEC.NCF ﬁle Save the AUTOEXEC.NCF ﬁle and return to the server prompt Verifying the Installation and Conﬁguration At the system prompt, enter load monitorSelect a driver to view its associated statistics Changing NetWare Driver Conﬁguration Parameters Log in or map to the serverParameter Range of Values Description Maintaining Groups Install the new secondary NIC Reboot the serverAdding a Secondary NIC to a Group Install the NICs Adding a Group 107 Server Feature Commands GroupDisplay status Link timeout HelpProbe interval Receive timeout Send timeoutRetry count Wait timeout Ungroup Troubleshooting a Group Conﬁguration Default NIC Settings Option Description Settings Auto Select ALL Conﬁguration Methods Method Description Requirements Changing General NIC Conﬁguration Settings Using the 3Com NIC Diagnostics ProgramMethod Description Using the 3Com DOS Conﬁguration Program Click OK to save the changes and exit the program Enter the following at the DOS prompt d\3c99xcfg.exe Conﬁguring the Managed PC Boot Agent MBA Enabling or Disabling the Boot ROM SettingBooting From the Network BBS BIOS-Compatible PCs Make sure that the NIC boot ROM setting is EnabledSet the MBA manually as the ﬁrst boot device Reboot the PC Non-BBS BIOS-Compatible PCs Change the MBA default boot setting from Local to NetworkDisabling the 3Com Logo Configuring IP Security Encryption Description Type Level Creating a Security Policy Deﬁning the Console Creating the Policy Select IP Security Policy Management, and then click AddClick Next and then Finish Creating a Filter Select a Speciﬁc IP Address in the pull-down listEnter destination IP address, and then click Next Accept the default, and then click Next Binding the FilterCreating the Filter Action Binding the Filter Action Enabling Encryption Disabling Encryption Interpreting the LEDs State Meaning Viewing the NIC LEDs in the Diagnostics Program LNK Accessing 3Com Support Databases Accessing the 3Com KnowledgebaseAccessing the 3Com NIC Help System Accessing Release Notes and Frequently Asked Questions Troubleshooting the NIC Installation Problems/Error MessagesCleaning Up a Failed Installation Troubleshooting the Network Connection Click Proceed Click OK Tip Description Troubleshooting Remote Wake-Up Make sure that you are using the latest driver for the NICCheck the computer Bios Check the Remote Wake-Up cable connection Troubleshooting a Network Connection Connect a straight-through cable from the PC to the hub Troubleshooting Hubs Cabling Pinouts Removing the Network Driver Exit the Device Manager and shut down Windows Click the Device Manager tab Removing DynamicAccess Server Features From the Start menu, select Settings/Control Panel Enter this command at the prompt NetWarePage Running NIC Diagnostics Running the 3Com DOS Diagnostics Program Running the NIC Diagnostics TestsReboot the computer using a DOS-bootablediskette Running the Network Test Tab Description Viewing the NIC LEDs in the Diagnostics Program Running the NIC Test Viewing Network Statistics Click the Statistics tab. The Statistics screen appears Using the 3Com Icon in the Windows System Tray Enabling the IconDisplaying Network Statistics Removing the 3Com NIC Diagnostics Program Click Proceed, and then follow the prompts on the screenPage Obtaining Drivers Page Specifications 3CR990 NIC Speciﬁcations Cabling Requirements Twisted-Pair Cable 10BASE-T Operation Category Use RJ-45 Connector Pin Assignments 100BASE-TX Operation Flow Control Pause FramesLink Negotiation Page 3C OM DMI a Gent About the 3Com DMI Agent System Requirements Installing the 3Com DMI Agent Network Management RequirementsFollow the prompts on the screen Restart the PC when prompted EtherCD Navigation LinksDescription Root Subdirectories Auto InsertText Files Subdirectory Description 165 File Name File DescriptionPage Windows Fresh Installation NetWare Fresh InstallationRequirements Installation Instructions Driver Summary screen, select 3C990.LAN and press Enter When the installation is ﬁnished, edit the STARTUP.NCF ﬁle Page Online Technical Services World Wide Web Site 3Com Knowledgebase Web Services 3Com Bulletin Board ServiceAccess by Analog Modem 3Com FTP Site 3Com Facts Automated Fax Service Access by Digital ModemSupport from Your Network Supplier 847 262 Support from 3Com Country Region Telephone Number Asia Paciﬁc RimEurope Returning Products for Repair Country RegionEurope, South Africa, and Middle East Latin America To obtain an authorization number, call or fax Country Region Telephone Number Fax Number Index Numbers MBA PCI NIC 131 NLMs Displaying, Windows Self-healing drivers SHDs OSR2 Index Page FCC Class B Statement Industry Canada Class B Emission Compliance Statement Page Product Registration