3COM 3C905B TX NM User Manual

Fast EtherLink® XL  
PCI 10/100BASE-TX  
Netw ork Interface Card  
User Guide  
Member of the 3Com Fast EtherLink XL family  
of netw ork interface cards  
http://w w w.3com.com/  
Part No. 09-1363-000  
Published February 1998  
CONTENTS  
CONTENTS  
ABOUT THIS GUIDE  
Finding Specific Information in This Guide  
1
Conventions  
2
1 INTRODUCTION  
Industry-Leading Performance 1-2  
DynamicAccess Software 1-2  
Remote Wake-up 1-3  
Installation and Configuration 1-3  
10/100 Mbps Support 1-3  
PC and Server Requirements 1-3  
How Do I Install the 3C905B-TX NIC? 1-4  
2 INSTALLING THE NIC  
Connecting to the Network 2-3  
Connecting the Remote Wake-up Cable 2-4  
3 INSTALLING THE NETWORK DRIVER  
Windows 95 3-1  
Confirming Installation 3-4  
Windows NT 3-5  
Windows NT Version 4.0 3-5  
Updating the Network Driver 3-5  
Installing the Network Driver 3-6  
Windows NT Version 3.51 3-7  
Updating the Network Driver 3-7  
Installing the Network Driver 3-8  
NetWare for Windows 3.1x, Windows for Workgroups,  
and DOS 3-9  
AutoLink Requirements 3-9  
Running the AutoLink Program 3-9  
iii  
Installing the Novell NetWare Server Driver 3-10  
NetWare Version 4.1 3-10  
Multiple NICs 3-11  
Supported Network Drivers 3-12  
4 TROUBLESHOOTING  
Status LEDs 4-1  
3Com NIC Diagnostics Program 4-2  
Accessing the 3C905B-TX Help System 4-3  
Displaying Release Notes, Frequently Asked Questions,  
and the KnowledgeBase 4-3  
Running the NIC Self-Test 4-4  
Running the Echo Test 4-6  
3Com Support Services 4-7  
Generating a Problem Report 4-8  
Removing the 3C905B-TX NIC PACE and  
3NICDIAGS Software 4-11  
Windows 95 and Windows NT 4.0 4-11  
DOS 4-11  
Checking the Remote Wake-up Function 4-11  
3Com DOS Diagnostic Program 4-12  
Crossover Cable Troubleshooting Tips 4-13  
Troubleshooting Hubs with Crossover Cable 4-14  
Frequently Asked Questions 4-15  
Accessing the 3Com World Wide Web Page 4-19  
5 CHANGING CONFIGURATION  
Configuration Settings 5-1  
Displaying Configuration Settings 5-2  
Changing Configuration Settings 5-2  
Changing PACE Configuration 5-4  
Selecting PACE Applications 5-4  
Changing PACE Ranges and Protocols 5-5  
PACE Advanced Options 5-6  
Setting Fast IP 5-6  
Using the DOS Configuration Program 5-6  
iv  
A SPECIFICATIONS  
Specifications A-1  
RJ-45 Connector Pin Assignments A-2  
B TECHNICAL SUPPORT  
Online Technical Services B-1  
World Wide Web Site B-1  
3Com Bulletin Board Service B-1  
Access by Analog Modem B-2  
Access by Digital Modem B-2  
3ComFacts Automated Fax Service B-2  
3ComForum on CompuServe Online Service B-3  
Support from Your Network Supplier B-3  
Support from 3Com B-4  
Returning Products for Repair B-6  
GLOSSARY  
INDEX  
3COM CORPORATION LIMITED WARRANTY  
FCC CLASS B STATEMENT  
FCC DECLARATION OF CONFORMITY  
3COM END USER SOFTWARE LICENSE AGREEMENT  
v
FIGURES  
1-1 3C905B-TX NIC 1-1  
1-2 3C905B-TX NIC Installation Steps 1-4  
2-1 Inserting the NIC 2-2  
2-2 Connecting the Network Cable to the RJ-45 Port 2-3  
2-3 Connecting the NIC to the Connector 2-4  
4-1 LEDs 4-2  
4-2 3Com NIC Diagnostics Program General Screen 4-4  
4-3 Diagnostics Screen 4-5  
4-4 3Com NIC Diagnostics Program Support Screen 4-7  
4-5 Problem Report Main Screen 4-9  
4-6 Computer Information Screen 4-9  
4-7 Straight-through and Crossover Cable Pinouts 4-13  
5-1 3Com NIC Diagnostics Program General Screen 5-3  
5-2 3Com NIC Diagnostics Properties Screen 5-3  
A-1 RJ-45 Connector Pin Assignments A-2  
vii  
TABLES  
1
2
Notice Icons  
2
Text Conventions  
2
3-1 Network Driver Text File Names 3-12  
4-1 LED Descriptions 4-2  
4-2 Frequently Asked Questions  
4-15  
5-1 Option Settings 5-1  
viii  
Lifetime Limited  
Warranty  
3Coms EtherLink®, Fast EtherLink, TokenLink®,  
TokenLink Velocity®, ATMLinkPCI, and  
FDDILinknetwork interface cards have a  
Lifetime Limited Warranty. For further details,  
please see 3Coms Limited Warranty statement  
in this guide.  
To ensure the very best 3Com service and support,  
take the time to complete the product registration  
card.  
Customers in the countries or regions shown below should send the  
completed registration card to the appropriate address. Customers in  
other non-U.S. locations should send the registration card to the U.S.  
address on the front of the card.  
Asia  
3Com Asia Ltd., Marketing Department  
Room 2506-07, 25/F.  
Citibank Tower  
Citibank Plaza, Central  
Hong Kong  
Japan  
3Com Japan, Marketing Department  
Shinjuku Sumitomo Building 23F  
2-6-1 Nishi Shinjuku, Shinjuku-ku  
Tokyo 163-02  
Japan  
Australia, New Zealand  
Sw eden, Finland, Norw ay,  
Denmark  
3Com Australia, Marketing Department  
99 Walker Street  
Level 7  
3Com Nordic, Marketing Department  
Torshamsgatan 39  
Box 1110  
North Sydney  
New South Wales 2060  
Australia  
164 22 KISTA  
Sweden  
Belgium, Netherlands, Luxembourg United Kingdom, Eire  
3Com Benelux B.V.,  
Marketing Department  
Nevelgaarde 8-9  
3436 ZZ  
Nieuwegein  
Netherlands  
3Com UK Ltd., Marketing Department  
Pacific House  
Third Avenue  
Globe Park Marlow-on-Thames  
Buckinghamshire, SL7 1YL  
England  
France, Israel  
3Com France, Marketing Department  
Immeuble McKinley  
BP 965  
1, Avenue de l’Atlantique  
91976 Les Ulis Courtaboeuf Cedex  
France  
Germany, Austria, Sw itzerland  
3Com GmbH, Marketing Department  
Gustav-Heinemann-Ring 123  
D-81739 Muenchen  
Munich  
West Germany  
Italy, Greece, Spain, Portugal, Malta  
3Com Mediterraneo Srl,  
Marketing Department  
Via Michelangelo Buonarroti, 1  
20093 Cologno Monzese MI  
Italy  
ABOUT THIS GUIDE  
About This Guide provides an overview of this guide,  
describes guide conventions, and tells you where to look  
for specific information.  
This guide describes how to install, configure, and  
troubleshoot the 3Com® Fast EtherLink® XL PCI  
10/100BASE-TX network interface card (NIC). This NIC is  
called the 3C905B-TX NIC in this guide.  
If the information in the README.TXT le on the  
EtherDisk® diskette shipped with your product differs from  
the information in this guide, follow the instructions in the  
README.TXT le.  
Finding Specic Information in This Guide  
This table shows where to find specific information in this  
guide.  
If you are looking for  
Turn to  
NIC features and PC and server requirements  
Installation and cabling information  
Network driver installation instructions  
Troubleshooting  
Chapter 1  
Chapter 2  
Chapter 3  
Chapter 4  
Chapter 5  
Appendix A  
Appendix B  
Instructions for changing configuration settings  
Specifications and RJ-45 pin assignments  
Technical support  
2
ABOUT THIS GUIDE  
Conventions  
Table 1 and Table 2 list conventions that are used  
throughout this guide.  
Table 1 Notice Icons  
Icon Notice Type  
Description  
Information note  
Important features or instructions  
Caution  
Information to alert you to potential damage to a  
program, system, or device  
Warning  
Information to alert you to potential personal injury  
Table 2 Text Conventions  
Convention  
Description  
Commands  
The word “command” means you must enter the  
command exactly as shown in text and press the Return or  
Enter key. Example:  
To launch the DOS diagnostics, enter the following  
command:  
a: install  
Screen displays This typeface represents information as it appears on the  
screen.  
The words “enter”  
and “type”  
When you see the word “enter” in this guide, you must  
type something, and then press the Return or Enter key.  
Do not press the Return or Enter key when an instruction  
simply says type.”  
Menu commands and Menu commands or button names appear in italics.  
buttons  
Example:  
From the Help menu, select Contents.  
Words in italicized  
type  
Italics emphasize a point or denote new terms at the place  
where they are defined in the text.  
Words in bold-face  
Bold text denotes key features.  
type  
   
INTRODUCTION  
1
The 3Com® 3C905B-TX network interface card (NIC)  
provides a high-performance connection to an Ethernet or  
Fast Ethernet network. This NIC operates at 100 Mbps or  
10 Mbps automatically, depending on the speed of the  
connected hub.  
TX  
D
ATA  
AC  
T
10  
L
N
K
100  
Figure 1-1 3C905B-TX NIC  
There are two types of 3C905B-TX NICs: the 3C905B-TX NIC  
and the 3C905B-TX-NM NIC.  
The 3Com Remote Wake-Up NIC (3C905B-TX), shown in  
Figure 1-1, operates as a wake-up NIC only in PCs with the  
Remote Wake-Up connector attached to the PC  
motherboard. This NIC provides a network connection with  
or without the Remote Wake-Up connector installed.  
The 3C905B-TX-NM NIC does not have the Remote Wake-Up  
connector or functionality.  
 
1-2  
CHAPTER 1: INTRODUCTION  
Unless specifically indicated, the name 3C905B-TX is used  
throughout this guide to refer to both NICs.  
This chapter describes the 3C905B-TX NIC features and PC  
and server requirements.  
Industry-Leading Performance  
The 3C905B-TX NIC provides the following performance  
features:  
Interactive Access technology to minimize CPU utilization  
Parallel Tasking® II architecture for high throughput and  
low processor utilization  
Full-duplex 10 Mbps and 100 Mbps support  
Hardware IP checksum enabled for better Internet and  
intranet performance  
Fast IP switching solution that allows you to  
cost-effectively scale internetwork performance as  
bandwidth requirements increase  
32-bit bus master design with full scatter gather and  
infinite bursting performance  
Flow control (IEEE 802.1x), which optimizes performance  
in switched networks through efficient data transmissions  
DynamicAccess Softw are  
DynamicAccesssoftware delivers intelligence at the edge of  
the network to optimize network performance and control.  
DynamicAccess features include PACEInteractive Access  
technology, dRMON (distributed RMON) support, and  
support for PACE real-time and multimedia applications.  
PACE class of service drivers enable prioritization of  
multimedia and business-critical applications like video  
conferencing and distance learning. With the 3Com PACE  
drivers, you can set the class of service for each application.  
The 3C905B-TX NIC ships with dRMON SmartAgent®  
intelligent agents that collect remote management  
information used by the Transcend® Edge Monitor System.  
Together, they provide full RMON network management  
information for both switched and Fast Ethernet networks.  
Remote Wake-up  
1-3  
Remote Wake-up  
Remote Wake-Up support is enabled for the 3C905B-TX NIC.  
If you are using the 3C905B-TX NIC in a PC that supports  
Remote Wake-Up through the PCI bus, the 3Com NIC  
receives wake-up signals and wakes the PC from a sleep state.  
Installation and Configuration  
The 3Com NIC Diagnostics program allows you to test  
the 3C905B-TX NIC, configure it, and display the NIC  
configuration information. If you are running DOS, you  
cannot use this program.  
The NIC Diagnostics Help system includes the 3C905B-TX  
Release Notes, Frequently Asked Questions, and  
KnowledgeBase.  
Microsoft Windows 95 detects the 3C905B-TX NIC and  
installs the network driver from 3Com EtherDisk Diskette #2.  
The AutoLinkinstallation software automatically installs  
all Novell NetWare DOS ODI client software into your  
operating system.  
10/100 Mbps Support  
The single RJ-45 connector on the network cable supports  
10 Mbps or 100 Mbps speeds.  
NWay auto-negotiation enables the 3C905B-TX NIC to  
automatically run at the speed that the connected hub  
supports. The 3C905B-TX NIC works with products that  
comply with IEEE 10BASE-T and 100BASE-TX specifications.  
PC and Server Requirements  
Your PC or server must have:  
An 80386, 80486, Pentium, or Alpha processor  
Alpha processors or drivers work only with  
Windows NT 4.0  
An available bus mastering PCI slot  
A minimum of 640K of memory  
1-4  
CHAPTER 1: INTRODUCTION  
Make sure that you are running the latest BIOS for your PC or  
server, even if your PC is new. Contact your PC manufacturer  
for more information.  
How Do I Install the 3C905B-TX NIC?  
To complete installation, install the NIC in your PC or server,  
connect it to the network, and install the network driver.  
The installations steps are depicted in Figure 1-2.  
Insert  
3C905B-TX NIC  
Chapter 2  
Connect NIC  
Chapter 2  
to network  
Which  
driver installation  
instructions  
should I use  
?
I don't know  
Ask  
Chapter 3  
MIS department  
I do know  
Install 3Com  
network driver  
Chapter 3  
Chapter 3  
Reboot  
Log on  
to network  
Figure 1-2 3C905B-TX NIC Installation Steps  
Proceed to Chapter 2 to install the 3C905B-TX NIC in your  
PC or server and connect it to the network.  
 
INSTALLING THE NIC  
2
There are two types of 3C905B-TX NICs: the 3C905B-TX NIC  
and the 3C905B-TX-NM NIC. They are both installed in your  
PC and connected to the network in exactly the same way.  
After you connect the 3C905B-TX NIC to the network, you  
connect the Remote Wake-Up cable to the motherboard.  
Before you begin, make sure that you also have the user  
guide and the 3C905B-TX EtherDisk diskettes, and that  
your PC meets the requirements described in Chapter 1.  
CAUTION: Each NIC is packed in an antistatic container to  
protect it during shipment. Before handling the NIC, touch  
the metal chassis of your PC. Maintain grounding by wearing  
a wrist strap attached to the chassis. Handle the NIC by its  
backplate and top edge. Do not touch the edge connector.  
To install the 3C905B-TX NIC in your PC or server and  
connect it to the network, follow these steps:  
1
2
Open the shipping container and inspect each item  
for damage.  
Remove all jew elry from your hands and w rists.  
Use only insulated or nonconductive tools.  
3
4
5
Unplug the PC and disconnect all cables.  
Remove the PC cover.  
Choose an empty bus mastering PCI slot.  
A sample PCI slot is shown in Figure 2-1. If you do not know  
how to identify a PCI slot, check your PC documentation or  
ask your system administrator. In most PCs, slots 1 and 2 are  
bus mastering slots. Use slot 1 for the 3C905B-TX NIC if  
possible. If you have a video PCI card, install it in the last slot  
(the one farthest from slot 1).  
6
Unscrew the screw holding the PCI slots backplate  
and remove it.  
2-2  
CHAPTER 2: INSTALLING THE NIC  
7
Insert the 3C905B-TX NIC into an empty PCI slot,  
show n in Figure 2-1.  
Make sure that the NIC is firmly seated in the slot.  
Screw  
3C905B-TX NIC  
PCI slot  
Figure 2-1 Inserting the NIC  
8
9
Secure the NIC w ith the screw you removed earlier.  
If you are installing the Remote Wake-Up connector, go to  
the chapter before replacing the PC cover.  
Replace the PC cover and reconnect all previously  
connected cables.  
10 Turn on the pow er to the PC.  
11 Proceed to the next section, Connecting to the  
Netw ork.”  
 
Connecting to the Network  
2-3  
Connecting to the Netw ork  
You must connect the NIC to the network before installing  
the network driver. To connect the 3C905B-TX NIC to the  
network cable, follow these steps:  
1
Connect the netw ork cable to the RJ-45 port on the  
3C905B-TX NIC, as show n in Figure 2-2.  
TX  
RJ-45 port  
Data  
RJ-45  
connector  
T
AC  
L
10  
N
K
100  
LEDs  
Figure 2-2 Connecting the Network Cable to the RJ-45 Port  
2
3
Connect the other end of the netw ork cable to a  
10BASE-T or a 100BASE-TX netw ork port.  
Check the LEDs, show n in Figure 2-2.  
After installation, and before you install the network driver,  
the LEDs indicate the following:  
10 LNK LED - green - 10 Mbps link integrity  
100 LNK - green - 100 Mbps link integrity  
ACT LED - OFF - until the network driver is installed  
See Table 4-1 for more LED information. If you are not  
installing the Remote Wake-Up cable, go to Chapter 3 to  
install the network driver.  
   
2-4  
CHAPTER 2: INSTALLING THE NIC  
Connecting the Remote Wake-up Cable  
WARNING: Install the NIC in slot 1 in the PC (as described  
earlier) before plugging in the 3-pin connector. Only properly  
trained and authorized personnel should perform service.  
Contact your PC manufacturer for information about safe  
service techniques.  
1
2
Insert the cable into the connector on the NIC, show n  
in Figure 2-3.  
Twist the cable twice before attaching the cable to the  
motherboard.  
Attach the cable to the connector on the PC  
motherboard, as show n in Figure 2-3.  
The connector is located in different locations depending  
on the PC.  
Connect Remote Wake-Up  
cable from NIC to mother-  
board connector  
Power  
supply  
Plug in Remote Wake-Up  
cable to connector here  
Figure 2-3 Connecting the NIC to the Connector  
3
Reconnect all cables and replace the PC cover.  
The 3C905B-TX Remote Wake-Up NIC is installed. Go back  
to the previous section Connecting to the Network” to  
complete installation.  
   
INSTALLING THE  
NETWORK DRIVER  
3
This chapter describes how to install the network driver  
that completes your PC connection to the network. The  
3C905B-TX software is installed with the network driver.  
Instructions are provided for Windows 95, Windows NT,  
and NetWare DOS client and server driver installation.  
Table 3-1 provides a complete list of supported drivers and  
text files that describe how to install them.  
Go to the section your MIS department recommends and  
follow the instructions to install the network driver on  
your PC.  
You can obtain the latest network drivers on 3Coms  
World Wide Web site. To access the Web site, enter the  
3Com URL into your Internet browser:  
The drivers are in the Support area. On the Support Welcome  
screen, scroll down to Latest Drivers and click.  
Window s 95  
This section describes how to install the network driver  
when your PC is running Windows 95. This driver supports  
dRMON and PACE technology.  
This driver can be used in Microsoft and NetWare  
environments, and instructions are included for both.  
You need the Windows 95 system installation files (CAB files)  
to complete the installation.  
Do not use the AutoLink software to install the driver if you  
are running Windows 95.  
3-2  
CHAPTER 3: INSTALLING THE NETWORK DRIVER  
Follow these steps to install the network driver in a PC  
running Windows 95:  
1
2
3
Install and configure Window s 95 before installing  
the 3C905B-TX NIC.  
Install the 3C905B-TX NIC and connect it to the  
netw ork, as described in Chapter 2.  
Restart the PC.  
Windows 95 automatically detects the NIC in the PC.  
If Windows 95 does not detect the 3C905B-TX NIC, see  
Chapter 4,Troubleshooting.”  
4
5
Select Driver from disk provided by the hardw are  
manufacturer and click OK.  
Insert EtherDisk Diskette #2 in your drive and, if the  
diskette is in drive A, click OK.  
Otherwise, supply the correct drive letter and click OK.  
Once the 3Com installation files are read, Windows 95  
prompts you for the Windows 95 network installation files.  
6
Enter the correct path to the Window s 95 files  
(CAB les) and click OK.  
If Windows prompts you to reboot, click No.  
7
8
Open the Window s 95 Control Panel.  
In the Control Panel, double-click Netw ork.  
The Network screen appears.  
9
For Microsoft netw orks, select the Configuration tab.  
For Novell NetWare netw orks, go to step 10.  
The default Microsoft network setup contains the following  
components:  
Client for Microsoft Networks  
Client for Novell Networks  
3Com EtherLink XL Adapter  
3Com dRMON SmartAgent PC software  
IPX/SPX compatible protocol  
NetBEUI protocol  
Windows 95  
3-3  
If a protocol is missing, follow these steps:  
a Select the protocol and click Add.  
b From the Select Network Protocol menu, select  
Microsoft in the left pane. In the right pane, select the  
protocol and click OK.  
If a client is missing, follow these steps:  
a Select the client and click Add.  
b From the Select Network Client menu, select Microsoft  
in the left pane, select the client in the right pane, and  
click OK.  
10 For NetWare only, on the Netw ork screen, remove the  
follow ing netw ork components, if present:  
Microsoft Client for Microsoft Network NetBEUI  
The network components should now include:  
Client for NetWare Networks  
3Com EtherLink XL Adapter  
3Com dRMON SmartAgent PC software  
IPX/SPX Compatible Protocol  
If a protocol is missing, follow these steps:  
a Select the protocol and click Add.  
b From the Select Network Protocol menu, select  
Microsoft in the left pane. In the right pane, select the  
protocol and click OK.  
If a client is missing, follow these steps:  
a Select the client and click Add.  
b Select Microsoft.  
c Click Client for NetWare Networks and then Properties.  
To select the NetWare server, follow these steps:  
a Under the General tab, set your preferred server and the  
first network drive and click OK.  
b Set the primary network logon to Client for NetWare  
Networks and click OK.  
 
3-4  
CHAPTER 3: INSTALLING THE NETWORK DRIVER  
11 When the configuration is correct, click the  
Identication tab.  
The computer name is the name of your PC. Give your  
PC a unique name of up to 15 characters. The PC name  
cannot include blank spaces.  
A workgroup (such as your department) is composed of  
the PCs you usually communicate with and the  
workgroups shared resources (such as printers).  
If you use peer group networking, the workgroup name  
is your peer group. Peers can see each other when they  
look in the Network Neighborhood.  
For information on peer-to-peer networking, see the  
W95NDIS3.TXT le in the HELP directory on  
EtherDisk Diskette #1.  
Your computer description is visible to other members  
of your workgroup in the Network Neighborhood.  
12 Click OK.  
The network connection is configured. Windows 95  
prompts you to restart the PC.  
13 Click Yes.  
After the PC restarts, you can log on to your network.  
If you have problems, see Chapter 4.  
Confirming Installation  
Complete the following procedure to confirm that the  
3C905B-TX NIC is properly installed:  
1
2
3
Double-click the My Computer icon.  
Double-click the Control Panel icon.  
Double-click the System icon.  
The System Properties box appears, detailing your  
system setup.  
4
5
Click the Device Manager tab.  
A list of devices appears, arranged by type.  
Double-click Netw ork Adapters.  
The name of the installed 3C905B-TX NIC appears:  
3Com EtherLink XL Adapter (3C905B)  
Windows NT  
3-5  
6
7
Double-click the 3C905B-TX name to display a  
description of the 3C905B-TX NIC and its current status.  
The dialog box confirms that the 3C905B-TX NIC is working  
properly. If a yellow exclamation point or a red X appears  
next to the 3Com EtherLink XL adapter name, go to  
Frequently Asked Questions” in Chapter 4 to troubleshoot  
the NIC.  
Click Cancel to leave each dialog box and return to  
the Control Panel.  
Window s NT  
This section describes how to install the network driver in a  
PC running Windows NT versions 4.0 or 3.51.  
Do not use the AutoLink software to install the driver if you  
are running Windows NT.  
Before you begin, obtain EtherDisk Diskette #2 and  
Windows NT installation files (on hard disk, diskettes,  
or CD).  
If Windows NT networking is not installed, you may also  
need the following information from your MIS department:  
Whether you are on a LAN or are connecting to one  
through a modem  
Protocol used in the Microsoft Windows Network  
(typically TCP/IP or NetBEUI)  
Name of the Windows NT server domain or workgroup  
you belong to  
IP address if you are not using DHCP  
Window s NT Version 4.0  
If you already have the 3C905B-TX network driver and  
want to update it, follow the instructions provided in the  
next section.  
Updating the Netw ork Driver  
To update the driver, follow these steps:  
1
2
Install the 3C905B-TX NIC and connect it to the  
netw ork, as described in Chapter 2.  
Restart the PC and start Window s NT.  
3-6  
CHAPTER 3: INSTALLING THE NETWORK DRIVER  
3
4
5
6
7
In the Control Panel, double-click Netw ork.  
In the Netw ork w indow, select the Adapter tab.  
Select 3Com EtherLink XL NIC.  
Click Update.  
Insert EtherDisk Diskette #2.  
The driver is updated.  
Installing the Netw ork Driver  
Follow these steps to install the network driver in a PC  
running Windows NT version 4.0:  
1
Install the 3C905B-TX NIC and connect it to the  
netw ork, as described in Chapter 2.  
2
3
4
Restart the PC and start Window s NT.  
In the Control Panel, double-click Netw ork.  
In the Netw ork w indow, select the Adapter tab.  
If this 3C905B-TX NIC is replacing a NIC already installed,  
follow these steps:  
a Select the existing 3Com NIC (that is being replaced) in  
the Installed Adapters group.  
b Click Remove.  
c Click Yes in the Warning dialog box.  
d Reboot the PC and repeat steps 2, 3, and 4.  
Click Add Adapter.  
5
6
In the Select Netw ork Adapter w indow, select  
Have Disk.  
7
8
9
Insert EtherDisk Diskette #2 in drive A and in the  
Insert Disk w indow, click OK.  
In the Select OEM Option box, select 3Com EtherLink  
Adapter (3C905B).  
Click OK.  
10 Select the Protocol tab.  
11 Select the appropriate protocol for your netw ork.  
     
Windows NT  
3-7  
12 In the Netw ork Settings w indow, click Close.  
If you are prompted for network information, enter the  
information supplied by your MIS department.  
Windows NT prompts you to reboot.  
13 Click Yes to restart your PC.  
The driver installation is complete.  
To confirm successful installation, double-click the Network  
icon in the Control Panel. Click the Adapters tab. The  
3C905B-TX NIC should appear in the list. If it does not  
appear, see Chapter 4 for troubleshooting information.  
Window s NT Version 3.51  
If you already have the 3C905B-TX network driver and  
want to update it, follow the instructions provided in the  
next section.  
Updating the Netw ork Driver  
To update the driver, follow these steps:  
1
Install the 3C905B-TX NIC and connect it to the  
netw ork, as described in Chapter 2.  
2
3
4
5
6
7
8
Restart the PC and start Window s NT.  
In the Control Panel, double-click Netw ork.  
Select the 3Com adapter and click Properties.  
Record the settings for the NIC resources.  
Click Cancel.  
Double-click Netw ork again in the Control Panel.  
In the list of Netw ork Softw are and Adapter Cards,  
select the 3Com adapter.  
9
Click Update.  
10 When prompted, enter the directory path (a:\), insert  
EtherDisk Diskette #2, and click OK.  
11 Click OK to close the Netw ork dialog box and  
complete the process.  
3-8  
CHAPTER 3: INSTALLING THE NETWORK DRIVER  
Installing the Netw ork Driver  
Follow these steps to install the network driver in a PC  
running Windows NT version 3.51:  
1
Install the 3C905B-TX NIC and connect it to the  
netw ork, as described in Chapter 2.  
2
3
4
5
Restart the PC and start Window s NT.  
In the Control Panel, double-click Netw ork.  
In the Netw ork Settings w indow, click Add Adapter.  
In the Add Netw ork Adapter w indow, select <Other>  
Requires disk from manufacturer.  
6
7
8
Click Continue.  
Insert EtherDisk Diskette #2 in drive A and click OK.  
In the Select OEM Option box, select  
3Com EtherLink XL PCI Adapter (3C905B).  
9
Click OK.  
The Bus Location window appears.  
10 Click OK.  
Windows NT copies the files from EtherDisk Diskette #2.  
If you are prompted for network information, contact your  
MIS department for the requested information.  
11 In the Netw ork Settings Change w indow, click OK.  
Windows NT completes the installation.  
12 Click Restart to restart your PC.  
If you have problems, see Chapter 4 for troubleshooting  
information.  
NetWare for Windows 3.1x, Windows for Workgroups, and DOS  
3-9  
NetWare for Window s 3.1x, Window s for Workgroups,  
and DOS  
The AutoLink program installs DOS client software and  
drivers for Novell NetWare in Windows 3.1x, Windows for  
Workgroups 3.11, and DOS environments.  
CAUTION: Do not use the AutoLink program if you are  
running Windows 95 or Windows NT.  
The AutoLink program modifies the CONFIG.SYS and  
AUTOEXEC.BAT les. It logs on to the server and updates  
the client software if your MIS department has already  
configured a 3Install account on your server.  
AutoLink Requirements  
To use the AutoLink program, your computer should have  
only one 3C905B-TX NIC installed and have 1 MB of free  
hard disk space.  
Running the AutoLink Program  
1
Install the NIC and connect it to the netw ork, as  
described in Chapter 2.  
2
3
4
Reboot, using a DOS diskette.  
Insert EtherDisk Diskette #1 in drive A.  
Run the Install program. Enter:  
a:install  
This opens the main menu.  
5
6
7
From the main menu, select Auto Install and Config  
for NetWare (AutoLink) and press Enter.  
Select DOS, Window s 3.1x, or Window s for  
Workgroups 3.11 and follow the instructions.  
When the auto installation process is finished,  
remove EtherDisk Diskette #1 and reboot the PC.  
If you are running Windows 3.1x, after you connect to the  
NetWare server, run the WSINSTALL program for full  
Windows support. Contact your MIS department for the  
location of this NetWare utility.  
3-10  
CHAPTER 3: INSTALLING THE NETWORK DRIVER  
If you experience problems that occur only when using the  
AutoLink program, display or print the AUTOLINK.LOG file.  
The AUTOLINK.LOG file contains a list of all the events that  
occurred during the AutoLink installation and configuration  
process.  
To display the file, enter:  
type autolink.log | more  
To print the file, enter:  
print autolink.log  
Installing the Novell NetWare Server Driver  
This driver is installed on a Novell NetWare server running  
NetWare 4.1.  
The \NWSERVER subdirectory on EtherDisk Diskette #1  
contains the driver (3C90X.LAN file) and NetWare Loadable  
Modules (NLMs) needed for NetWare 4.1.  
The NetWare server driver can also be used on a NetWare  
version 3.12 server. Contact Novell to obtain the NLM les  
and for instructions for installing the driver in a 3.12  
environment. The NetWare 3.11 server is not supported by  
the 3C905B-TX NIC.  
NetWare Version 4.1  
This section describes how to install the NetWare server driver  
on EtherDisk Diskette #1 on a NetWare version 4.1 server.  
To import the server driver into a NetWare 4.1 server, follow  
these steps:  
1
2
Install the NetWare server softw are.  
When the NIC Selection menu appears, insert  
EtherDisk Diskette #1 in the drive.  
3
4
Press Insert to add a driver externally.  
Press F3 to change the path.  
Installing the Novell NetWare Server Driver  
3-11  
5
At the A:\ prompt, enter:  
nwserver  
The installation program gathers the files and prompts you  
for a NIC selection.  
6
7
Select 3Com Fast EtherLink XL 10/100 Ethernet NIC.  
Press Enter to continue the server installation.  
Multiple NICs  
To support more than one NIC in a server, edit the  
AUTOEXEC.NCF file to the following format:  
load C:\SERVER\3C90X.LAN PORT=<port1>  
NAME=<name1> FRAME=<frametype>  
load C:\SERVER\3C90X.LAN PORT=<port2>  
NAME=<name2> FRAME=<frametype>  
Port1 and port2 are the 3C905B-TX NICs PCI port addresses,  
and name1 and name2 are user-specified names assigned to  
distinguish the multiple NICs.  
The FRAME parameter is optional. The default frame type is  
Ethernet_802.2. If you want the ODI server driver to support  
more than one frame type, then both the unique NAME=  
and FRAME= parameters must be paired on each load  
driver line. The valid frame types are Ethernet_802.2,  
Ethernet_802.3, Ethernet_II, and Ethernet_SNAP.  
The protocols must be bound to the specific driver  
configuration using the user-assigned unique names.  
The following example shows how this can be done:  
load C:\SERVER\3C90X.LAN PORT=1000  
FRAME=Ethernet_802.3 NAME=ADPONE  
load C:\SERVER\3C90X.LAN PORT=2000  
FRAME=Ethernet_II  
bind IPX to ADPONE  
bind IPX to ADPTWO  
NAME=ADPTWO  
The examples used may require other parameters to work  
properly. Consult the appropriate Novell NetWare manuals  
for details.  
3-12  
CHAPTER 3: INSTALLING THE NETWORK DRIVER  
Supported Netw ork Drivers  
Table 3-1 provides the text file names and driver names for  
supported network drivers. These text files describe how to  
install the network driver and are located in the HELP  
directory on EtherDisk Diskette #1.  
Table 3-1 Network Driver Text File Names  
Netw ork  
Operating System  
Text File Name  
Netw ork Driver Name  
Windows 95  
W95NDIS.TXT  
EL90XND3.SYS/  
EL90XND4.SYS  
Windows 95 NDIS 2  
Windows NT  
W95NDIS2.TXT  
WINNT.TXT  
EL90X.DOS  
EL90XND3.SYS/  
EL90XND4.SYS  
NetWare Client 32  
NetWare 4.1 Server  
NetWare OS/2  
CLIENT32.TXT  
NETWARE.41X  
NWOS2ODI.TXT  
3C90X.LAN  
3C90X.LAN  
3C90X.SYS  
3C90X.COM  
NetWare client for DOS,  
Windows 3.1, and  
AUTOLINK.TXT  
(NETWARE directory)  
Windows for Workgroups  
Windows for Workgroups  
(NetWare)  
WFWNETWR.TXT  
WFWNDIS2.TXT  
WFWNDIS3.TXT  
3C90X.COM  
EL90X.DOS  
EL90X.386  
Windows for Workgroups  
(NDIS 2)  
Windows for Workgroups  
(NDIS 3)  
Banyan VINES  
BANYAN.TXT  
LANMAN.TXT  
LANSRV.TXT  
EL90X.DOS  
EL90X.DOS  
EL90X.DOS  
EL90X.OS2  
EL90X.DOS  
Microsoft LAN Manager  
IBM LAN Server (DOS)  
IBM LAN Server (OS/2)  
Artisoft LANtastic  
LANSRV.TXT  
LANTASTK.TXT  
PATHWORK.TXT  
DEC PATHWORKS  
EL90X.DOS (DOS) and  
3C90X.COM (NetWare)  
 
TROUBLESHOOTING  
4
This chapter explains how to isolate and solve NIC problems,  
including the following topics:  
Status LEDs  
3Com NIC Diagnostics program  
Accessing the 3C905B-TX Help system  
3Com support services  
Removing the 3C905B-TX software  
Checking Remote Wake-Up  
Crossover cable troubleshooting tips  
Frequently Asked Questions  
Accessing the 3Com World Wide Web page  
The 3Com World Wide Web site offers the latest drivers,  
troubleshooting information, and software updates in the  
Support area. To access the Web site, enter the 3Com URL  
address into your Internet browser:  
Status LEDs  
Before the LEDs can be used for troubleshooting, the NIC  
must be connected to the network (Chapter 2) and the  
network driver must be installed (Chapter 3).  
The 3C905B-TX NIC has three status LEDs, as shown in  
Figure 4-1 and described in Table 4-1.  
4-2  
CHAPTER 4: TROUBLESHOOTING  
TX  
RJ-45 port  
D
ATA  
AC  
ACT LED  
10 LNK LED  
100 LNK LED  
T
10  
L
N
K
100  
Figure 4-1 LEDs  
Table 4-1 LED Descriptions  
LED  
Description  
Flashing  
Reversed  
Steady  
Off  
10 LNK  
Green:  
Good 10BASE-T  
No connection  
Link integrity polarity  
connection between between NIC  
NIC and hub and hub  
100 LNK Green:  
Reversed  
Good 100BASE-TX No connection  
connection between between NIC  
Link integrity polarity  
NIC and hub  
and hub  
ACT  
Yellow:  
Network traffic Heavy network  
No traffic  
Port traffic for present  
either speed  
traffic  
3Com NIC Diagnostics Program  
Use the 3Com NIC Diagnostics program for Windows 95  
and Windows NT to test the 3C905B-TX NIC and change  
configuration. To change the NICs configuration, see  
Chapter 5. If you are running NetWare Client 32 with the  
NetWare ODI driver, use the DOS diagnostic program  
described in the INSTRUCT.TXT le in the HELP directory on  
EtherDisk Diskette #1.  
The 3Com NIC Diagnostics program is installed with the  
driver. Driver installation is described in Chapter 3. You must  
install the driver before you run the program.  
   
3Com NIC Diagnostics Program  
4-3  
Accessing the 3C905B-TX Help System  
You can display the 3C905B-TX NIC Help system, a  
Windows Help application that includes 3C905B-TX  
Release Notes, Frequently Asked Questions, and the  
3C905B-TX KnowledgeBase. The Help system was installed  
with the network driver.  
To display the 3Com Help system, follow these steps:  
1
Install the 3C905B-TX NIC, connect it to the netw ork  
(Chapter 2), and install the driver (Chapter 3).  
2
3
4
5
Click the Window s Start menu.  
Select Programs.  
Select 3Com NIC Utilities.  
Select 3Com NIC Diagnostics Help.  
The Help screen for the 3Com NIC Diagnostics General  
screen appears.  
6
Click the links to display information about each of  
the 3Com NIC Diagnostics screens.  
Displaying Release Notes, Frequently Asked Questions,  
and the Know ledgeBase  
To access the Release Notes, Frequently Asked Questions,  
and KnowledgeBase information, follow these steps:  
1
2
Click the Support tab, show n in Figure 4-2.  
Click the Release Notes button on the Support screen.  
The Release Notes Help screen appears.  
Click the Release Notes link to display tips about  
installing and using the 3C905B-TX NIC.  
Click the Frequently Asked Questions link to display  
common questions asked by customers and answered  
by 3Com support experts.  
Click the KnowledgeBase link to display 3C905B-TX NIC  
compatibility topics.  
To display the entire Help system, click the Help button on  
each NIC Diagnostics screen. To display information about  
any item on each screen, click the question mark (?), drag it  
to the item, and click. The pop-up box displays information  
about the selected item.  
4-4  
CHAPTER 4: TROUBLESHOOTING  
Running the NIC Self-Test  
Run the NIC self-test to check the physical components,  
connectors, and circuitry on the NIC.  
1
2
Make sure that the 3C905B-TX NIC is installed and  
connected to the netw ork (Chapter 2) and the  
netw ork driver is installed (Chapter 3).  
Start the 3Com NIC Diagnostics program by clicking  
the Window s Start menu.  
3
4
5
Select Programs.  
Select 3Com NIC Utilities.  
Select 3Com NIC Diagnostics.  
A warning message appears. Click OK to disconnect your  
PC from the network to conduct this test.  
The 3Com NIC Diagnostics General screen appears, as  
shown in Figure 4-2.  
Figure 4-2 3Com NIC Diagnostics Program General Screen  
To access the 3Com NIC Diagnostics program later by  
clicking its icon in the system tray, click the check box next  
to Enable Tray Control.  
 
3Com NIC Diagnostics Program  
4-5  
6
Click the Diagnostics tab to display the Diagnostics  
screen, show n in Figure 4-3.  
Figure 4-3 Diagnostics Screen  
7
Click Start in the Self-Test area.  
The following tests run in sequence:  
Register Access  
EEPROM  
FIFO  
Ethernet Core Loopback  
Encoder/Decoder Loopback  
Interrupt  
You can click Stop to stop the tests. Otherwise, the tests  
run continuously to completion.  
Click the Help button to display help for this screen. Click the  
question mark (?) at the top of the screen, drag it to a test,  
and click. The pop-up box displays information about the  
selected test and what to do if the test fails.  
 
4-6  
CHAPTER 4: TROUBLESHOOTING  
Running the Echo Test  
The echo test tests the 3C905B-TX NICs ability to transmit  
and receive data while on the network.  
You need two PCs with 3Com NICs installed to run an echo  
test: one PC to send data and one PC to receive data.  
CAUTION: Running the echo test while connected to an  
active network can cause intermittent failures. To avoid  
this, connect to an inactive network on which only the PC  
being tested is operating.  
To run the echo test, follow these steps:  
1
2
Make sure that the 3C905B-TX NIC is installed in the  
sending PC and connected to the netw ork (Chapter 2)  
and that the netw ork driver is installed (Chapter 3).  
Install a 3C905B-TX NIC in another PC (the echo server),  
connect it to the netw ork, and install the netw ork  
driver.  
The echo server PC is the responding PC.  
3
On both PCs:  
a Click the Windows Start menu.  
b Select Programs.  
c Select 3Com NIC Utilities.  
d Select 3Com NIC Diagnostics.  
e Click the Diagnostics tab to display the Diagnostics  
screen, shown in Figure 4-3.  
4
Click Respond on the Diagnostics screen (Figure 4-3)  
of the responding PC.  
The Echo Test Responder screen appears on the  
responding PC.  
5
6
Click Start on the Echo Test Responder screen.  
On the Diagnostics screen (Figure 4-3) of the sending  
PC, click Send.  
7
On the Diagnostics screen (Figure 4-3) of the sending  
PC, click Start.  
The statistics for the test appear in the Statistic section of  
the window.  
3Com NIC Diagnostics Program  
4-7  
question mark (?) at the top of the screen and drag it to a  
statistic and click. The pop-up box displays information  
about the selected statistic.  
3Com Support Services  
The 3Com NIC Diagnostics Program Support screen, shown  
in Figure 4-4, provides access to the following support  
services:  
3Com NIC Diagnostics program  
3C905B-TX NIC Release Notes  
3Com BBS telephone numbers and modem speeds  
3Com World Wide Web information  
3Com problem report generator  
1
To access the 3Com NIC Diagnostics support screen,  
click the Support tab on the 3Com NIC Diagnostics  
program main screen, show n in Figure 4-2.  
The 3Com NIC Diagnostics Program Support screen  
appears, shown in Figure 4-4.  
Figure 4-4 3Com NIC Diagnostics Program Support Screen  
 
4-8  
CHAPTER 4: TROUBLESHOOTING  
Click Diagnostics to run the 3Com NIC Diagnostics  
program. Refer to the beginning of this chapter for  
information on how to use the 3Com NIC Diagnostics  
program.  
Click Release Notes to display the 3C905B-TX Release  
Notes, Frequently Asked Questions, and the 3C905B-TX  
KnowledgeBase.  
Click BBS Information to display the BBS telephone  
numbers and modem speeds.  
The http... button displays the 3Com World Wide Web  
address.  
Click Problem Report to generate a 3Com problem report.  
Generating a Problem Report  
The problem report generator prompts you for the  
information that will help 3Com customer support solve  
your 3C905B-TX NIC installation and configuration problems.  
You can e-mail the completed report to 3Com customer  
support and receive an e-mail answer within 2 business days.  
To generate a problem report, follow these steps:  
1
2
Click Problem Report on the 3Com NIC Diagnostics  
Program Support screen show n in Figure 4-4.  
The Problem Report main screen appears, shown in  
Figure 4-5.  
Review the screen text and click Next to begin the  
problem report.  
The Customer Information screen appears.  
3
4
Enter your company name, address, contact name or  
names, phone number, and e-mail address.  
Click Next to display the Computer Information  
screen, show n in Figure 4-6.  
3Com NIC Diagnostics Program  
4-9  
Figure 4-5 Problem Report Main Screen  
Figure 4-6 Computer Information Screen  
   
4-10  
CHAPTER 4: TROUBLESHOOTING  
5
Enter the follow ing information to complete the form:  
a Enter the PC manufacturer and model of your PC.  
b Identify your PC as a client, server, or both, using the  
pull-down menu.  
c Select your CPU type using the pull-down menu.  
d Enter the numbers of the PC slots that have boards  
installed.  
e Enter the numbers of the PC slots that support bus  
mastering.  
f
Select your PC operating system using the pull-down  
menu.  
g Select your network operating system using the  
pull-down menu.  
h Select your PC processor speed using the pull-down  
menu.  
6
7
Click Next to display the Problem Description screen.  
Enter your problem description and the 3Com case  
number if you have one.  
8
9
Use the pull-dow n menu to select w hether you can  
reproduce the problem or not, and if so, how often.  
Click Next to display the Save screen.  
10 Click Finish to save the report to the C:\3REPORT.TXT  
le.  
The Send Report screen appears. Use your mail application to  
mail the report to one of the addresses on the Send Report  
screen. Contact your local reseller first, before you e-mail the  
report.  
The problem report is completed. To view the report,  
click View Report.  
11 Click OK.  
12 The 3Com NIC Diagnostics Program General screen  
appears, as show n in Figure 4-2.  
To exit the program, click Cancel.  
Removing the 3C905B-TX NIC PACE and 3NICDIAGS Software  
4-11  
Removing the 3C905B-TX NIC PACE and  
3NICDIAGS Softw are  
You can remove the PACE and 3NICDIAGS software from  
your PC using Windows 95, Windows NT, or DOS.  
Window s 95 and Window s NT 4.0  
To remove the PACE and 3NICDIAGS software, follow these  
steps:  
1
In the Window s Control Panel, select Add/Remove  
Programs.  
2
3
Select 3Com NIC Diagnostic Utilities.  
Click Add/Remove.  
The 3C905B-TX NIC software is removed from your PC.  
DOS  
To remove the PACE and 3NICDIAGS software, follow these  
steps:  
At the DOS prompt, enter:  
un3c90x.exe  
The program removes the 3C905B-TX software.  
Checking the Remote Wake-up Function  
If the PC does not boot up when a Magic Packetwake-up  
packet is sent, perform these general troubleshooting steps:  
1
Verify that the Wake on Link and Wake on Magic  
Packet settings are enabled.  
a Click the Network Neighborhood icon.  
b Click Properties.  
c Double-click the 3Com NIC icon and click the  
Advanced tab.  
Make sure that Wake on Link and Wake on Magic Packet  
are enabled. If these settings do not exist, either the NIC  
is not a Remote Wake-Up NIC or the driver installation file  
is outdated. For the latest 3C905B-TX drivers and  
installation files, download EtherDisk diskette 3.1 or later  
from the 3Com Web site:  
4-12  
CHAPTER 4: TROUBLESHOOTING  
2
Verify the driver version.  
The driver must be at least version 2.23.40.  
a Click Properties.  
b Click the Version tab.  
c Check the EL90X.SYS driver version.  
If the version is lower than 3.1, download an updated  
version of the driver from the 3Com Web site:  
3
If the version of the driver is up to date, the keyw ords  
are enabled, and the PC still does not w ake up, check  
the BIOS.  
a Boot the PC and enter the BIOS.  
b Locate the Wake-Up on PME signal or Wake-Up on LAN  
event setting.  
c Verify that the setting is enabled.  
If you experience difficulties locating these settings,  
consult the reference manual for your PC, or contact  
your PC vendor.  
4
5
Remove the PC cover and check the Remote Wake-Up  
connection.  
Verify that the Remote Wake-Up cable is plugged in to the  
NIC as well as to the motherboard. Unplug and reinsert the  
cable if necessary.  
If the NIC still does not w ake up, install a know n  
good w orking Remote Wake-Up NIC and the Remote  
Wake-Up cable in the PC and recheck the PC.  
If the PC works, contact your network vendor for a  
replacement of the 3Com NIC. After you verify with a  
known good working NIC that the PC still does not  
wake up, there may be a problem with the motherboard.  
Contact your PC vendor.  
3Com DOS Diagnostic Program  
For information about running the 3Com DOS diagnostic  
program, see the INSTRUCT.TXT text file in the HELP  
directory on EtherDisk Diskette #1.  
Crossover Cable Troubleshooting Tips  
4-13  
Crossover Cable Troubleshooting Tips  
When you work with network cabling, concentrators, and  
NICs from different vendors, it is possible to connect  
everything and still have no communication between  
file servers and workstations.  
When there are several unknown variables, it is difficult to  
determine which component is broken. Use these tips to  
isolate the problem.  
1
2
Determine w hether your equipment complies w ith  
the 10BASE-T or 100BASE-TX standard.  
This is particularly important for concentrators (hubs or  
repeaters).  
Connect a straight-through cable from the PC to  
the hub.  
The hub performs an internal crossover so that the signal  
can go from TD+ to RD+ and TD– to RD–. When you look  
at an RJ-45 connector from the front, pin 1 is identified on  
the left-hand side when the metal contacts are facing up.  
3
Make sure that the TD+ and TD– w ires are tw isted  
together, and that the RD+ and RD– w ires are tw isted  
together. The example in Figure 4-7 show s 10BASE-T  
cabling.  
.
12345678  
Straight-through  
10BASE-T cable  
Crossover  
10BASE-T cable  
TD+  
TD  
RD+  
TD+  
TD  
RD+  
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
RD  
6 RD  
7
8
Figure 4-7 Straight-through and Crossover Cable Pinouts  
 
4-14  
CHAPTER 4: TROUBLESHOOTING  
Using wires from opposing pairs can cause signals to  
be lost. For a 100BASE-TX cable, pins #1 and #2, and #3  
and #6 must be on the same twisted strand.  
Troubleshooting Hubs w ith Crossover Cable  
When there is doubt whether a hub is performing correctly,  
or if the impedance settings are in question, a crossover  
cable can help you isolate the failing component.  
1
2
a crossover cable to verify that the NIC and netw ork  
operating system are properly configured.  
To make a crossover cable, simply connect TD+ to RD+  
and TD– to RD–.  
The cable performs the crossover that is usually performed  
by the hub. Make sure that two twisted-pair wires are  
used. Figure 4-7 shows the pinouts for the crossover cable.  
On the straight-through cable, make sure that the wires are  
from the same twisted pair.  
If the file server and client PC function together as a small  
network, then either the existing cabling or the hub is the  
problem.  
If there is a proper crossover, the appropriate LED  
comes on.  
If there is a straight-through connection, the LED does  
not light.  
A blinking LED indicates that there is a polarity mismatch  
(that is, TD+ to RD– instead of TD+ to RD+).  
Frequently Asked Questions  
4-15  
Frequently Asked Questions  
Table 4-2 describes some common questions and answers  
about the 3C905B-TX NIC.  
Table 4-2 Frequently Asked Questions  
Question  
Answ er  
Which PCI slot is best for my  
PCI NIC?  
3Com PCI NICs are designed to work in any bus  
mastering PCI slot, preferably slot 1. Avoid any  
PCI slot next to an ISA slot. This is often a shared  
slot and does not support bus mastering.The  
NICs perform best in those slots that support bus  
mastering data transfers. Refer to your PC  
manual for information on which slots support  
bus mastering data transfers.  
Do I have to configure the  
3C905B-TX NIC?  
PCI is a self-configuring bus architecture. Most of  
the time you only need to install the board in your  
PC; PCI does the rest. However, on some PCI  
computers, you may be required to configure the  
computers BIOS manually after installing your PCI  
NIC. Refer to the owners guide for your PC.  
What interrupts should I avoid? You should avoid using any interrupts used by  
ISA/EISA boards that do not properly support  
shared interrupts (level-triggered).  
If you do not know or are unsure whether other  
devices or adapters in your PC support shared  
interrupts, then avoid using them.  
Avoid using the same interrupt as your local hard  
drive (normally IRQ 14 for IDE drives and IRQ 11  
for most SCSI host adapters), since not all hard  
drives support shared interrupts at this time.  
Avoid using 9 because it cascades with 2.  
For Novell NetWare servers, avoid using IRQ 7 or  
15. These IRQs only support nonshared devices  
and may cause problems if they are shared  
between two devices.  
Are my Fast EtherLink XL network Yes, the Fast EtherLink XL network drivers are  
drivers Microsoft-certified?  
Microsoft-certified.  
Are my Fast EtherLink XL Bus  
Master ODI drivers  
Yes, the Fast EtherLink XL ODI drivers are  
Novell-certified.  
Novell-certified?  
(continued)  
 
4-16  
CHAPTER 4: TROUBLESHOOTING  
Table 4-2 Frequently Asked Questions (continued)  
Question  
Answ er  
How do I remove the 3Com icon 1 Double-click the 3Com icon to start the 3Com  
from my system tray?  
NIC Diagnostics program.  
2 In the right bottom corner of the main  
window, click the Enable Tray Control check  
box to remove the check mark.  
3 Exit the program and the icon will not appear  
anymore.  
How can I get a SCO driver?  
You can get the SCO driver from the 3Com  
World Wide Web site.  
1 Enter the 3Com URL:  
2 Click Drivers.  
3 Click Latest Drivers.  
4 Download the required files.  
90XSCO3.EXE is for SCO Open Desktop.  
90xSCO5.EXE is for SCO Open Server.  
How can I remove the  
3C905B-TX PACE and  
3NICDIAGS software?  
1 In the Windows 95 Control Panel, select  
Add/Remove Programs.  
2 Select 3Com NIC Diagnostic Utilities.  
3 Click Add/Remove.  
The PACE and 3NICDIAGS software is removed  
from your PC.  
Does the 3C905B-TX NIC  
support full-duplex?  
Yes, the 3C905B-TX NIC supports full-duplex at  
10 Mbps and 100 Mbps operation.  
Why does the 3C905B-TX NIC  
When Windows 95 is installed with the  
install as a “Generic PCI Ethernet 3C905B-TX NIC already installed, Windows 95  
Controller” under Other Devices installs the 3C905B-TX NIC as a generic PCI  
in the Device Manager?  
Ethernet controller. To work around this problem,  
follow these steps:  
1 In the Device Manager, double-click  
Other Devices.  
2 Click PCI Ethernet Controller.  
3 Click Remove.  
4 Restart your PC.  
Does the 3C905B-TX NIC support No, the 3C905B-TX NIC network driver only  
Windows NT version 3.51 on the supports Windows NT 4.0.  
DEC Alpha PC?  
(continued)  
Frequently Asked Questions  
4-17  
Table 4-2 Frequently Asked Questions (continued)  
Question  
Answ er  
What should I do if a yellow  
exclamation point appears next  
to the 3C905B-TX NIC name?  
1 In the Device Manager, double-click  
Other Devices.  
2 Click PCI Ethernet Controller or the duplicate  
3C905B-TX NIC entry.  
3 Click Remove.  
4 Restart your PC.  
What is the hardware IP header The header checksum is a field in the IP header.  
checksum?  
When the 3C905B-TX NIC receives IP data, it  
computes the IP header checksum, and if an error  
occurred, the packet is dropped and is not passed  
to the protocol stack. By computing the CRC  
through hardware, the NIC can increase the  
performance of IP traffic and reduce CPU  
processing required by the protocol stack.  
To avoid having the CRC computed twice (once  
in the hardware and again in the software by the  
protocol stack), make sure that your IP protocol  
does not compute the CRC or if it does, disable  
that function.  
Does the 3C905B-TX NIC support The 3C905B-TX does not support NetWare  
NetWare versions 3.11 or 4.0x?  
versions 3.11 or 4.0x. These versions require the  
use of a server driver that conforms to the  
HSM 3.2 specification. 3Com no longer develops  
NetWare server drivers to the HSM 3.2  
specification.  
What does Remote Wake-Up do? Remote Wake-Up powers up a PC remotely from  
standby or suspend mode using a wake-up packet  
that is sent through the LAN. With this method,  
no one has to be at the PC to turn it on.  
Remote Wake-Up is also known as Wake on LAN.  
How can I tell if my PC supports Check to see if there is a 3-pin header for the  
Remote Wake-Up?  
Remote Wake-Up connector located on the PC  
motherboard and if your PC has a BIOS that  
supports wake-up events based on LAN events.  
If you are unsure, contact your PC vendor for  
further details.  
What can wake up the  
3C905B-TX NIC?  
The NIC can be awakened by a Magic Packet  
wake-up packet sent by management software,  
or by connecting or disconnecting the TP cable.  
(continued)  
4-18  
CHAPTER 4: TROUBLESHOOTING  
Table 4-2 Frequently Asked Questions (continued)  
Question  
Answ er  
What is a Magic Packet?  
A Magic Packet is a valid Ethernet packet that  
contains a synchronization stream immediately  
followed by 16 repetitions of the destination MAC  
address. This Magic Packet is not protocol-specific  
as long as the protocol contains the sync stream  
and the 16 repetitions. This Magic Packet can be  
routed in order to wake up a remote PC. Since it is  
a valid Ethernet address, the Remote Wake-Up  
NIC can accept broadcast or multicast packets.  
What is a cable  
connect/disconnect?  
The NIC can also be awakened by connecting or  
disconnecting the network cable.  
What is Fast IP?  
Fast IP is software that improves performance on  
switched networks. Fast IP allows end systems  
(desktops and servers) to discover switched  
communication paths. By creating switched  
shortcuts, Fast IP allows end stations to bypass  
the router and transfer data across wire-speed  
switched paths. Fast IP is part of 3Coms  
DynamicAccess software, an advanced network  
driver that brings intelligence to end systems to  
provide improved network performance and  
control.  
What are the PC and network  
requirements to run Fast IP?  
Client requirements:  
PC running Windows 95 or Windows NT  
(versions 4 or 3.51), 3Com 3C905B-TX NIC,  
and the TCP/IP stack  
Network requirements:  
Switched path between stations and single  
broadcast domain  
What are the network  
configuration requirements for  
Fast IP?  
Fast IP is designed to bypass the router,  
particularly where the router is a bottleneck, as  
well as to leverage the switched infrastructure.  
For Fast IP to create shortcuts around routers,  
there must be a switched path between source  
and destination.  
What is the performance gain  
when using Fast IP?  
Fast IP bypasses the router to provide increased  
performance in switched networks even if only a  
small number of network nodes use Fast IP.  
The performance gain obtained when deploying  
Fast IP is directly related to traffic load on the  
backbone router. The more traffic pumped to  
the router, the greater the latency and response  
time and the higher the performance gain.  
Internal tests show performance increases on the  
order of 600% when routers are loaded at 70  
to 75% .  
Accessing the 3Com World Wide Web Page  
4-19  
Accessing the 3Com World Wide Web Page  
The 3Com Web site features news and information about  
3Com products, customer service and support, 3Coms  
latest drivers, technical information, and more.  
To access 3Coms World Wide Web site, enter the 3Com  
URL into your Internet browser:  
The Customer Support section has the latest troubleshooting  
tips for 3Com NICs.  
CHANGING CONFIGURATION  
5
This chapter describes how to display and change  
configuration settings for the 3C905B-TX NIC using the  
3Com NIC Diagnostics program.  
Before you change the settings, contact your system  
administrator.  
Configuration Settings  
Table 5-1 lists each configuration option, the default  
setting, and the available settings.  
.
Table 5-1 Option Settings  
Option  
Default Setting  
Available Settings  
Network Driver  
Optimization  
Normal  
Minimize CPU Utilization, Maximize  
Network Performance, Normal  
Full-Duplex  
Boot PROM  
Media Type  
PACE  
Auto Select  
Disabled  
Enabled, Disabled, Auto Select  
Disabled, 8K, 16K, 32K  
Auto Select  
Disabled  
100BASE-TX, 10BASE-T, Auto Select  
Enabled, Disabled  
NDIS Driver Speed None  
100 Mbps, 10 Mbps (Windows NT only),  
N/A (Windows 95)  
Remote Wake-Up No  
Yes, No  
CAUTION: Before setting the 3C905B-TX NIC for full-duplex,  
make sure that the switch port is also set to full-duplex or  
supports full-duplex and auto-negotiation (NWay).  
Full-duplex at 100 Mbps improves the performance of  
switch (hub) connections. The 3C905B-TX NIC supports  
full-duplex at 10 or 100 Mbps. If the switch supports the  
NWay feature and full-duplex, the 3C905B-TX NIC  
automatically runs in full-duplex.  
5-2  
CHAPTER 5: CHANGING CONFIGURATION  
Displaying Configuration Settings  
If you are running Windows 95 or Windows NT, use the  
3Com NIC Diagnostics program to display and change  
configuration settings.  
The 3Com NIC Diagnostics program is automatically  
installed with the network driver. Driver installation is  
described in Chapter 3.  
To display the current configuration of the 3C905B-TX NIC  
using the 3Com NIC Diagnostics program, follow these steps:  
1
2
Make sure that the 3C905B-TX NIC is installed and  
connected to the netw ork (Chapter 2) and the  
netw ork driver is installed (Chapter 3).  
Start the 3Com NIC Diagnostics program by clicking  
the Window s Start menu.  
3
4
5
Select Programs.  
Select 3Com NIC Utilities.  
Select 3Com NIC Diagnostics.  
The 3Com NIC Diagnostics Program General screen appears,  
as shown in Figure 5-1.  
6
Click NIC Details to display the NIC Details screen.  
Each configuration setting is displayed with the current  
value. Use the scroll bar to display the full list.  
Click the Help button to display Help for this screen. Click the  
question mark (?) at the top of the screen, drag it to a value,  
and click. The pop-up box displays information about the  
selected value.  
Changing Configuration Settings  
To change the 3C905B-TX NIC configuration settings with  
the 3Com NIC Diagnostics program, follow these steps:  
1
Click the Properties tab on the 3Com NIC Diagnostics  
General screen, show n in Figure 5-1.  
The 3Com NIC Diagnostics Properties screen appears, as  
shown in Figure 5-2.  
Changing Configuration Settings  
5-3  
Figure 5-1 3Com NIC Diagnostics Program General Screen  
Figure 5-2 3Com NIC Diagnostics Properties Screen  
   
5-4  
CHAPTER 5: CHANGING CONFIGURATION  
2
To display the options for each setting, select the  
setting and scroll through the options pull-dow n  
menu to the right.  
Click the Help button to display Help for this screen. Click the  
question mark (?) at the top of the screen, drag it to a value,  
and click. The pop-up box displays information about the  
selected value.  
3
4
To select a new value, use the pull-dow n menu and  
release the mouse button at the value you w ant.  
Click OK.  
The new value is selected. Repeat the process to change  
any configuration setting on the Properties screen. Click OK  
to save values or Cancel to exit without saving values.  
Changing PACE Configuration  
PACE technology allows you to establish class of service in  
order to prioritize multimedia and real-time data.  
Prioritization makes sure that critical data for the selected  
applications gets through as fast as possible. To use PACE  
technology, you must have a switched connection over  
3Com switches that are enabled for PACE technology.  
Selecting PACE Applications  
To select PACE applications, follow these steps:  
1
On the Properties screen show n in Figure 5-2, click  
PACE Configuration.  
The PACE Applications screen appears.  
For the PACE driver to recognize high-priority network  
traffic, it must know if a stream of network traffic was  
generated by a specific PACE application.  
2
3
To enable PACE support for an application, click the  
box next to the appropriate application name.  
Click OK.  
Changing PACE Configuration  
5-5  
Changing PACE Ranges and Protocols  
You can add information for PACE applications not listed  
on the PACE Applications screen. You must specify the port  
or socket ranges as well as the network protocol being  
used. Refer to the PACE application user guide. The PACE  
network driver uses these ranges to determine whether a  
packet should be treated as high-priority.  
1
2
3
To add the PACE ranges and protocols, click the  
Additional Ranges tab.  
The PACE Additional Ranges screen appears.  
Enter the beginning of the port or socket range for  
the application in the Range Start box.  
The range should be a four-digit hexadecimal value.  
Enter the Range End value of the port or socket range  
for the application.  
The range end should be a four-digit hexadecimal number.  
If only one port or socket is needed, Range End should  
match Range Start.  
4
Select the protocol that the application uses.  
The protocol can be TCP, UDP, or IPX. Some applications  
support multiple protocols and have port or socket ranges  
for each protocol. In this case, the range or protocol must  
match the protocol on the PC.  
For example, if only TCP/IP is installed, do not enter the  
socket range for IPX; otherwise, you could experience a  
decrease in performance.  
5
Once the Range Start, Range End, and Protocol are  
entered, click Add.  
The range is added to the list.  
To remove a range, select the range in the list and  
click Remove.  
5-6  
CHAPTER 5: CHANGING CONFIGURATION  
PACE Advanced Options  
PACE Advanced Options are used to fine-tune the way the  
network driver handles types of PACE traffic. In general,  
these values need not be altered. Contact your network  
administrator before using these options.  
1
To display the PACE Advanced Options screen, click  
the Advanced Options tab on the PACE Applications  
screen.  
The PACE Advanced Options screen appears.  
Enter new information as required.  
Click OK to set the new value.  
2
3
To review the PACE settings descriptions, click Help on the  
PACE screens.  
Setting Fast IP  
You can use Fast IP to improve performance in an  
environment where most servers and clients are attached  
to a switched network. Contact your system administrator  
before you implement Fast IP.  
You must have the 3C905B-TX NIC installed and be  
running either Windows 95 or Windows NT with TCP/IP  
enabled. In this environment, any application that uses  
TCP/IP or Microsoft Networking over TCP/IP, FTP, or HTTP  
can use Fast IP.  
For a detailed explanation of Fast IP, go to the 3Com Web  
site at:  
1
2
Click the Fast IP tab on the PACE Applications screen.  
To enable Fast IP, click Fast IP enabled on the Fast IP  
screen.  
3
Click OK to save the change.  
Using the DOS Configuration Program  
To use the DOS diagnostic program, see the INSTRUCT.TXT  
file in the HELP directory on EtherDisk Diskette #1.  
SPECIFICATIONS  
A
This appendix lists the specifications and connector pin  
assignments for the 3C905B-TX NIC.  
Specications  
Netw ork Interface  
10 Mbps Ethernet  
10BASE-T  
Ethernet IEEE 802.3 industry  
standard for a 10 Mbps  
baseband CSMA/CD local area  
network  
100 Mbps Ethernet  
100BASE-TX  
Ethernet IEEE 802.3u industry  
standard for a 100 Mbps  
baseband CSMA/CD local area  
network  
Physical Dimensions  
Height:  
8.57 cm (3.75 in.)  
12.07 cm (4.75 in.)  
Length:  
Environmental Operating Range  
Operating temperature: 0˚ to 70 ˚C (32˚ to 158 ˚F)  
Humidity:  
10 to 90% noncondensing  
+5 V ± 5% @ 650 mA max  
Pow er Requirements  
Operating voltage:  
A-2  
APPENDIX A: SPECIFICATIONS  
RJ-45 Connector Pin Assignments  
Figure A-1 shows the RJ-45 connector pin assignments for  
the 3C905B-TX NIC.  
TX  
D
ATA  
AC  
T
1 TD+  
_
3 RD+  
4
10  
L
N
K
2 TD  
100  
5
_
6 RD  
7
8
1 2 3 4 5 6 7 8  
Figure A-1 RJ-45 Connector Pin Assignments  
 
TECHNICAL SUPPORT  
B
3Com provides easy access to technical support  
information through a variety of services. This appendix  
describes these services.  
Information contained in this appendix is correct at time of  
publication. For the very latest, we recommend that you  
access 3Com Corporations World Wide Web site.  
For NIC support, call 1-800-876-3266.  
Online Technical Services  
3Com offers worldwide product support 24 hours a day,  
7 days a week, through the following online systems:  
World Wide Web site  
3Com Bulletin Board Service (3ComBBS)  
SM  
3ComFacts automated fax service  
3ComForum on CompuServe online service  
World Wide Web Site  
Access the latest networking information on 3Com  
Corporations World Wide Web site by entering our URL  
into your Internet browser:  
This service features the latest information about 3Com  
solutions and technologies, customer service and support,  
news about the company, Net Age® Magazine, technical  
documentation, and more.  
3Com Bulletin Board Service  
3ComBBS contains patches, software, and drivers for all  
3Com products, as well as technical articles. This service is  
available through analog modem or digital modem (ISDN)  
24 hours a day, 7 days a week.  
B-2  
APPENDIX B: TECHNICAL SUPPORT  
Access by Analog Modem  
To reach the service by modem, set your modem to 8 data  
bits, no parity, and 1 stop bit. Call the telephone number  
nearest you:  
Country  
Australia  
Brazil  
Data Rate  
Telephone Number  
61 2 9955 2073  
55 11 5181 9666  
33 1 6986 6954  
4989 62732 188  
852 2537 5601  
39 2 27300680  
81 3 3345 7266  
52 5 520 7835  
up to 14400 bps  
up to 14400 bps  
up to 14400 bps  
up to 28800 bps  
up to 14400 bps  
up to 14400 bps  
up to 14400 bps  
up to 28800 bps  
up to 14400 bps  
up to 14400 bps  
up to 28800 bps  
up to 28800 bps  
France  
Germany  
Hong Kong  
Italy  
Japan  
Mexico  
P.R. of China  
Taiwan, R.O.C.  
U.K.  
86 10 684 92351  
886 2 377 5840  
44 1442 438278  
1 408 980 8204  
U.S.A.  
Access by Digital Modem  
ISDN users can dial in to 3ComBBS using a digital modem  
for fast access up to 56 Kbps. To access 3ComBBS using  
ISDN, use the following number:  
1 408 654 2703  
3ComFacts Automated Fax Service  
3Com Corporations interactive fax service, 3ComFacts,  
provides data sheets, technical articles, diagrams, and  
troubleshooting instructions on 3Com products 24 hours  
a day, 7 days a week.  
Call 3ComFacts using your Touch-Tone telephone using  
one of these international access numbers:  
Country  
U.K.  
Telephone Number  
44 1442 438279  
1 408 727 7021  
U.S.A.  
Support from Your Network Supplier  
B-3  
Local access numbers are available within the following  
countries:  
Telephone  
Number  
Telephone  
Number  
Country  
Australia  
Belgium  
Denmark  
Finland  
France  
Country  
Netherlands  
Norway  
1800 123 853  
0800 71279  
800 17319  
0800 0228049  
800 11062  
Portugal  
0505 442 607  
956 0815  
98 001 4444  
0800 908158  
0130 81 80 63  
1678 99085  
Russia (Moscow only)  
Spain  
900 964 445  
020 792954  
0800 626403  
Germany  
Italy  
Sweden  
U.K.  
3ComForum on CompuServe Online Service  
3ComForum contains patches, software, drivers, and  
technical articles about all 3Com products, as well as a  
messaging section for peer support. To use 3ComForum,  
you need a CompuServe account.  
To use 3ComForum:  
1
2
Log on to your CompuServe account.  
Type:  
go threecom  
3
Press [Return] to see the 3ComForum main menu.  
Support from Your Netw ork Supplier  
If additional assistance is required, contact your network  
supplier. Many suppliers are authorized 3Com service  
partners who are qualified to provide a variety of services,  
including network planning, installation, hardware  
maintenance, application training, and support services.  
When you contact your network supplier for assistance,  
have the following information ready:  
A list of system hardware and software, including  
revision levels  
Diagnostic error messages  
Details about recent configuration changes, if applicable  
B-4  
APPENDIX B: TECHNICAL SUPPORT  
If you are unable to contact your network supplier, see the  
following section on how to contact 3Com.  
Support from 3Com  
If you are unable to receive support from your network  
supplier, technical support contracts are available from 3Com.  
Contact your local 3Com sales office to find your  
authorized service provider using one of these numbers:  
Regional Sales Office  
Telephone Number  
3Com Corporation  
P.O. Box 58145  
5400 Bayfront Plaza  
Santa Clara, California  
95052-8145  
800 NET 3Com  
U.S.A.  
3Com Asia Limited  
Australia  
61 2 9937 5000 (Sydney)  
61 3 9866 8022 (Melbourne)  
852 2501 1111  
Hong Kong  
India  
91 11 644 3974  
Indonesia  
Japan  
62 21 572 2088  
81 6 536 3303 (Osaka)  
81 3 3345 7251 (Tokyo)  
82 2 3455 6300  
Korea  
Malaysia  
60 3 732 7910  
New Zealand  
Philippines  
P.R. of China  
64 9 366 9138  
632 892 4476  
8610 68492568 (Beijing)  
86 21 63501581 (Shanghai)  
65 538 9368  
Singapore  
Taiwan, R.O.C.  
Thailand  
886 2 377 5850  
662 231 8151 5  
3Com Austria  
43 1 580 17 0  
3Com Benelux B.V.  
Belgium  
32 2 725 0202  
Netherlands  
31 0346 586211  
3Com Canada  
Calgary  
Edmonton  
Montreal  
Ottawa  
403 265 3266  
403 423 3266  
514 683 3266  
613 566 7055  
416 498 3266  
604 434 3266  
Toronto  
Vancouver  
3Com France  
33 1 69 86 68 00  
(continued)  
Support from 3Com  
B-5  
Regional Sales Office  
3Com GmbH  
Telephone Number  
Czech Republic/Slovak Republic 420 2 21845 800  
Germany  
49 30 34 98790 (Berlin)  
(Central European HQ)  
Hungary  
49 89 627320 (Munich)  
36 1 250 83 41  
Poland  
48 22 6451351  
3Com Iberia  
Portugal  
Spain  
351 1 3404505  
34 1 5096900  
3Com Latin America  
U.S. Headquarters  
Northern Latin America  
Argentina  
408 326 2093  
305 261 3266 (Miami, Florida)  
541 312 3266  
Brazil  
Chile  
55 11 5181 0869  
562 633 9242  
Colombia  
57 1 629 4847  
Mexico  
Peru  
52 5 520 7841/7847  
51 1 221 5399  
Venezuela  
58 2 953 8122  
3Com Mediterraneo  
Italy  
39 2 253011 (Milan)  
39 6 5279941 (Rome)  
3Com Middle East  
971 4 349049  
3Com Nordic AB  
Denmark  
Finland  
Norway  
Sweden  
45 39 27 85 00  
358 0 435 420 67  
47 22 58 47 00  
46 8 632 56 00  
3Com Russia  
007 095 258 09 40  
27 11 807 4397  
41 31 996 14 14  
3Com Southern Africa  
3Com Sw itzerland  
3Com Technologies  
Ireland  
353 1 820 7077  
3Com U.K. Ltd.  
44 131 240 2900 (Edinburgh)  
44 161 873 7717 (Manchester)  
44 1628 897000 (Marlow)  
B-6  
APPENDIX B: TECHNICAL SUPPORT  
Returning Products for Repair  
Before you send a product directly to 3Com for repair, you  
must first obtain a Return Materials Authorization (RMA)  
number. Products sent to 3Com without RMA numbers will  
be returned to the sender unopened, at the senders expense.  
To obtain an RMA number, call or fax:  
Country  
Telephone Number Fax Number  
U.S.A. and Canada  
1 800 876 3266,  
option 2  
408 764 7120  
Latin America  
1 408 326 2927  
408 764 7120  
Europe, South Africa, 44 1442 435860  
and Middle East  
44 1442 435822  
Elsewhere  
1 408 326 2926  
1 408 764 7120  
GLOSSARY  
10BASE-T  
The IEEE 802.3 standard for a 10 Mbps baseband network  
on twisted-pair cable.  
100BASE-T  
The IEEE 802.3 standard for a 100 Mbps baseband  
network over twisted-pair cable.  
100BASE-TX  
The IEEE 802.3 standard for a 100 Mbps baseband  
network over two-pair Category 5 UTP or STP wire.  
dRMON  
Distributed RMON. The 3C905B-TX NIC SmartAgent  
intelligent agents collect remote management information  
and send it to the Transcend Edge Monitor System to  
provide full RMON network management in switched and  
Fast Ethernet networks.  
DynamicAccess softw are  
3Com proprietary technology that optimizes network  
performance. DynamicAccess features include PACE  
Interactive Access technology, dRMON (distributed RMON)  
support, Efficient Multicast Control, and support for  
PACE real-time and multimedia class of service  
applications.  
full scatter gather  
Technique that reduces CPU utilization by coordinating  
multiple storage locations for received data with no CPU  
utilization and then collecting it from multiple memory  
locations for transmission.  
2
GLOSSARY  
infinite bursting  
Technology that enables the 3C905B-TX NIC to move data  
continuously across the PCI bus without breaks in the data  
transfer previously caused by cache size limitations.  
Previously, cache limitations caused the NIC to release and  
reacquire the PCI bus after every 64-byte burst. Infinite  
bursting increases throughput and reduces CPU utilization  
for better performance.  
NDIS  
Network Driver Interface Specification. Defines the network  
driver architecture and interfaces that let a PC support  
NICs. This architecture provides a standardized way to write  
drivers for network NICs.  
netw ork interface card (NIC)  
Network interface card. Also called adapter.  
10/100 auto-negotiation (NWay)  
Signaling scheme that allows the NIC and the hub to  
negotiate between 10BASE-T and 100BASE-T, and  
automatically select the highest performance level  
supported by both devices.  
PACE technology  
Technology that enhances both real-time, interactive  
applications and multimedia (data, voice, and video)  
applications by enhancing network bandwidth utilization,  
reducing latency, controlling jitter, and supporting multiple  
traffic priority levels.  
Parallel Tasking II architecture  
3Coms third-generation Ethernet NIC architecture.  
Parallel Tasking technology accelerates data transfer by  
processing data packets simultaneously instead of  
sequentially.  
PCI  
Peripheral Component Interconnect. An advanced  
high-performance local bus that supports multiple peripheral  
devices. At 33 MHz, the PCI bus transfers data at up to  
1056 Mbps.  
INDEX  
crossover cable  
cable pinouts 4-13  
troubleshooting tips 4-13  
Numbers  
10/100 auto-negotiation (NWay) 1-3,  
5-1  
3C90X.LAN file 3-10  
3Com Bulletin Board Service  
(3ComBBS) B-1  
3Com NIC Diagnostics program  
echo test 4-6  
NIC self test 4-4  
3Com sales offices B-4  
3Com URL B-1  
D
DEC PATHWORKS 3-12  
diagnostic tests  
NIC echo test 4-6  
NIC self-test 4-4  
DOS 3-9  
drivers, installing 3-1  
DynamicAccess features 1-2  
3ComFacts B-2  
3ComForum B-3  
E
A
echo test 4-6  
Artisoft LANtastic 3-12  
AUTOEXEC.BAT le 3-9  
AUTOEXEC.NCF file 3-11  
AutoLink auto installation  
software 1-3, 3-9  
F
Fast IP 5-6  
fax service. See 3ComFacts  
Frequently Asked Questions 4-15  
full duplex 5-1  
AUTOLINK.LOG file 3-10  
auto-negotiation 1-3, 5-1  
full-duplex 5-1  
B
Banyan VINES 3-12  
bulletin board service B-1  
H
Help system  
accessing 4-3  
Frequently Asked Questions 4-3  
KnowledgeBase 4-3  
Release Notes 4-3  
C
changing configuration settings 5-2  
checking Remote Wake-Up 4-11  
CompuServe B-3  
CONFIG.SYS le 3-9  
configuration settings 5-1  
confirming NIC installation in  
Windows 95 3-4  
connecting to the network 2-3  
conventions  
I
IBM LAN Server 3-12  
installing drivers  
Artisoft LANtastic 3-12  
AutoLink 3-12  
Banyan VINES 3-12  
DEC PATHWORKS 3-12  
IBM LAN Server 3-12  
LAN Manager 3-12  
notice icons, About This Guide  
2
text, About This Guide  
CPU utilization 5-1  
2
2
INDEX  
NetWare Client 32 3-12  
NetWare for DOS, Windows 3.1x,  
and Windows for  
P
PACE technology 5-4  
advanced options 5-6  
PC and server requirements 1-3  
physical dimensions A-1  
pin assignments 4-14, A-2  
power requirements A-1  
problem report, generating 4-8  
Workgroups 3-9  
NetWare server driver 3-10  
supported network drivers 3-12  
WFW NDIS 2 3-12  
WFW NDIS 3 3-12  
WFW NetWare 3-12  
Windows 95 3-1  
16-bit driver 3-12  
Windows NT 3-5  
R
Release Notes 4-3  
installing the NIC 2-1  
Remote Wake-Up, checking 4-11  
removing the 3C905B-TX NIC PACE and  
3NICDIAGS software 4-11  
returning products for repair B-6  
RJ-45 connector pin assignments A-2  
K
KnowledgeBase 4-3  
L
S
LAN Manager 3-12  
LAN Server 3-12  
LANtastic 3-12  
LEDs 2-3, 4-1  
server driver, Novell NetWare 3-10  
support services 4-7  
switch port, setting full-duplex 5-1  
T
M
technical support  
3Com URL B-1  
Media Type option description 5-1  
Microsoft LAN Manager 3-12  
bulletin board service B-1  
CompuServe service B-3  
fax service B-2  
N
network suppliers B-3  
product repair B-6  
troubleshooting 4-1, 5-1  
crossover cable 4-13  
LEDs 4-1  
NDIS 2 network driver 3-12  
NetWare 3-9  
Client 32 3-12  
OS/2 3-12  
version 4.10 3-10  
network driver optimization 5-1  
network supplier support B-3  
NIC  
U
updating the network driver  
Windows NT 3.51 3-7  
Windows NT 4.0 3-5  
URL B-1  
connecting to the network 2-3  
installing drivers 3-1  
LEDs 4-1  
network interface A-1  
V
O
VINES 3-12  
online technical services B-1  
operating voltage requirements A-1  
INDEX  
3
W
Windows 3.1x 3-9  
Windows 95 1-3, 3-1  
confirming NIC installation 3-4  
installing network driver 3-1, 3-12  
Windows for Workgroups 3-9, 3-12  
Windows NT 3-5, 3-12  
version 3.51 3-7  
version 4.0 3-5  
World Wide Web (WWW) 4-19, B-1  
3Com Corporation LIMITED WARRANTY  
HARDWARE  
3Com warrants its hardware products to be free from defects in workmanship and materials, under  
normal use and service, for the following lengths of time from the date of purchase from 3Com or its  
Authorized Reseller:  
Network interface cards  
Lifetime  
1 year  
Other hardware products (unless otherwise specified in the warranty statement above)  
Spare parts and spares kits  
90 days  
If a product does not operate as warranted above during the applicable warranty period, 3Com shall,  
at its option and expense, repair the defective product or part, deliver to Customer an equivalent  
product or part to replace the defective item, or refund to Customer the purchase price paid for the  
defective product. All products that are replaced will become the property of 3Com. Replacement  
products may be new or reconditioned. Any replaced or repaired product or part has a ninety (90) day  
warranty or the remainder of the initial warranty period, whichever is longer.  
3Com shall not be responsible for any software, firmware, information, or memory data of Customer  
contained in, stored on, or integrated with any products returned to 3Com for repair, whether under  
warranty or not.  
SOFTWARE  
3Com warrants that the software programs licensed from it will perform in substantial conformance to  
the program specifications therefor for a period of ninety (90) days from the date of purchase from  
3Com or its Authorized Reseller. 3Com warrants the media containing software against failure during  
the warranty period. No updates are provided. The sole obligation of 3Com with respect to this express  
warranty shall be (at the discretion of 3Com) to refund the purchase price paid by Customer for any  
defective software products, or to replace any defective media with software which substantially  
conforms to applicable 3Com published specifications. Customer assumes responsibility for the  
selection of the appropriate applications program and associated reference materials. 3Com makes no  
warranty or representation that its software products will work in combination with any hardware or  
applications software products provided by third parties, that the operation of the software products  
will be uninterrupted or error-free, or that all defects in the software products will be corrected. For any  
third-party products listed in the 3Com software product documentation or specifications as being  
compatible, 3Com will make reasonable efforts to provide compatibility, except where the  
noncompatibility is caused by a “bug” or defect in the third party’s product.  
STANDARD WARRANTY SERVICE  
Standard warranty service for hardware products may be obtained by delivering the defective product,  
accompanied by a copy of the dated proof of purchase, to the 3Com Corporate Service Center or to an  
Authorized 3Com Service Center during the applicable warranty period. Standard warranty service for  
software products may be obtained by telephoning the 3Com Corporate Service Center or an  
Authorized 3Com Service Center, within the warranty period. Products returned to the 3Com  
Corporate Service Center must be preauthorized by 3Com with a Return Material Authorization (RMA)  
number marked on the outside of the package, and sent prepaid, insured, and packaged appropriately  
for safe shipment. The repaired or replaced item will be shipped to Customer, at the expense of 3Com,  
not later than thirty (30) days after receipt of the defective product by 3Com.  
WARRANTIES EXCLUSIVE  
IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, CUSTOMER’S SOLE REMEDY FOR  
BREACH OF THAT WARRANTY SHALL BE REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE  
PAID, AT THE OPTION OF 3COM. TO THE FULL EXTENT ALLOWED BY LAW, THE FOREGOING  
WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES, TERMS,  
OR CONDITIONS, EXPRESS OR IMPLIED, EITHER IN FACT OR BY OPERATION OF LAW, STATUTORY OR  
OTHERWISE, INCLUDING WARRANTIES, TERMS, OR CONDITIONS OF MERCHANTABILITY, FITNESS FOR A  
PARTICULAR PURPOSE, AND SATISFACTORY QUALITY. 3COM NEITHER ASSUMES NOR AUTHORIZES  
ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE,  
INSTALLATION, MAINTENANCE, OR USE OF ITS PRODUCTS.  
3COM SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE  
THAT THE ALLEGED DEFECT IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY CUSTOMER’S OR  
ANY THIRD PERSON’S MISUSE, NEGLECT, IMPROPER INSTALLATION OR TESTING, UNAUTHORIZED  
ATTEMPTS TO REPAIR OR MODIFY, OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED  
USE, OR BY ACCIDENT, FIRE, LIGHTNING, OR OTHER HAZARD.  
LIMITATION OF LIABILITY  
TO THE FULL EXTENT ALLOWED BY LAW, 3COM ALSO EXCLUDES FOR ITSELF AND ITS SUPPLIERS ANY  
LIABILITY, WHETHER BASED IN CONTRACT OR TORT (INCLUDING NEGLIGENCE), FOR INCIDENTAL,  
CONSEQUENTIAL, INDIRECT, SPECIAL, OR PUNITIVE DAMAGES OF ANY KIND, OR FOR LOSS OF  
REVENUE OR PROFITS, LOSS OF BUSINESS, LOSS OF INFORMATION OR DATA, OR OTHER FINANCIAL  
LOSS ARISING OUT OF OR IN CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE, USE,  
PERFORMANCE, FAILURE, OR INTERRUPTION OF ITS PRODUCTS, EVEN IF 3COM OR ITS AUTHORIZED  
RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, AND LIMITS ITS LIABILITY TO  
REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE PAID, AT THE OPTION OF 3COM. THIS  
DISCLAIMER OF LIABILITY FOR DAMAGES WILL NOT BE AFFECTED IF ANY REMEDY PROVIDED HEREIN  
SHALL FAIL OF ITS ESSENTIAL PURPOSE.  
DISCLAIMER  
Some countries, states, or provinces do not allow the exclusion or limitation of implied warranties or  
the limitation of incidental or consequential damages for certain products supplied to consumers or the  
limitation of liability for personal injury, so the above limitations and exclusions may be limited in their  
application to you. When the implied warranties are not allowed to be excluded in their entirety, they  
will be limited to the duration of the applicable written warranty. This warranty gives you specific legal  
rights which may vary depending on local law.  
GOVERNING LAW  
This Limited Warranty shall be governed by the laws of the State of California, U.S.A., excluding its  
conflicts of laws principles and excluding the United Nations Convention on Contracts for the  
International Sale of Goods.  
3Com Corporation, 5400 Bayfront Plaza, Santa Clara, CA 95052-8145 (408) 764-5000  
FCC CLASS B STATEMENT  
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two  
conditions:  
1
2
This device may not cause harmful interference, and  
This device must accept any interference received, including interference that may cause undesired  
operation.  
WARNING: This equipment has been tested and found to comply with the limits for a Class B digital  
device, pursuant to Part 15 of the FCC Rules, and the Canadian Department of Communications  
Equipment Standards entitled, “Digital Apparatus,” ICES-003.These limits are designed to provide  
reasonable protection against harmful interference in a residential installation. This equipment  
generates, uses and can radiate radio frequency energy and, if not installed and used in accordance  
with the instructions, may cause harmful interference to radio communications. However, there is no  
guarantee that interference will not occur in a particular installation. If this equipment does cause  
harmful interference to radio or television reception, which can be determined by turning the  
equipment off and on, the user is encouraged to try to correct the interference by one or more of the  
following measures:  
Reorient or relocate the receiving antenna.  
Increase the separation between the equipment and receiver.  
Connect the equipment into an outlet on a circuit different from the one which the receiver is  
connected to.  
Consult the dealer or an experienced radio/TV technician for help.  
The user may find the following booklet prepared by the Federal Communications Commission helpful:  
The Interference Handbook  
This booklet is available from the U.S. Government Printing Office, Washington, D.C. 20402. Stock No.  
004-000-00345-4.  
NOTE: In order to maintain compliance with the limits of a Class B digital device, 3Com requires that  
you use quality interface cables when connecting to this device. Changes or modifications not expressly  
approved by 3Com could void the users authority to operate this equipment. Refer to the manual for  
specifications on cabling types.  
FCC DECLARATION OF CONFORMITY  
We declare under our sole responsibility that the  
Model:  
Description:  
3C905B-TX  
3C905B-TX-NM  
Fast EtherLink XL PCI 10/100BASE-TX  
Network Interface Card  
to which this declaration relates, is in conformity with the following standards or other normative  
documents:  
ANSI C63.4-1992 Methods of Measurement  
Federal Communications Commission 47 CFR Part 15, subpart B  
15.107 (e) Class B Conducted Limits  
15.109 (g) Class B Radiated Emissions Limits  
3Com Corporation, 5400 Bayfront Plaza, P.O. Box 58145, Santa Clara, CA 95052-8145  
3COM END USER SOFTWARE LICENSE AGREEMENT  
IMPORTANT: Read Before Using This Product  
YOU SHOULD CAREFULLY READ THE FOLLOWING TERMS AND CONDITIONS BEFORE USING  
THIS PRODUCT. IT CONTAINS SOFTWARE, THE USE OF WHICH IS LICENSED BY 3COM  
CORPORATION (“3COM”) TO ITS CUSTOMERS FOR THEIR USE ONLY AS SET FORTH BELOW. IF  
YOU DO NOT AGREE TO THE TERMS AND CONDITIONS OF THIS AGREEMENT, DO NOT USE THE  
SOFTWARE. USING ANY PART OF THE SOFTWARE INDICATES THAT YOU ACCEPT THESE TERMS.  
LICENSE: 3Com grants you a nonexclusive license to use the accompanying software program(s) (the  
Software”) subject to the terms and restrictions set forth in this License Agreement. You are not  
permitted to lease, rent, distribute or sublicense the Software or to use the Software in a time-sharing  
arrangement or in any other unauthorized manner. Further, no license is granted to you in the human  
readable code of the Software (source code). Except as provided below, this License Agreement does  
not grant you any rights to patents, copyrights, trade secrets, trademarks, or any other rights in respect  
to the Software.  
The Software is licensed to be used on any workstation or any network server owned by or leased to  
you, provided that the Software is used only in connection with a 3Com adapter. You may reproduce  
and provide one (1) copy of the Software and supporting documentation for each such workstation or  
network server on which the Software is used as permitted hereunder. Otherwise, the Software and  
supporting documentation may be copied only as essential for backup or archive purposes in support  
of your use of the Software as permitted hereunder. You must reproduce and include all copyright  
notices and any other proprietary rights notices appearing on the Software and the supporting  
documentation on any copies that you make.  
NO ASSIGNMENT; NO REVERSE ENGINEERING: You may not transfer or assign the Software and/or  
this License Agreement to another party without the prior written consent of 3Com. If such consent is  
given and you transfer or assign the Software and/or this License Agreement, then you must at the  
same time either transfer any copies of the Software as well as the supporting documentation to the  
same party or destroy any such materials not transferred. Except as set forth above, you may not  
transfer or assign the Software or your rights under this License Agreement.  
Modification, reverse engineering, reverse compiling, or disassembly of the Software is expressly  
prohibited. However, if you are a European Community (EC) resident, information necessary to  
achieve interoperability of the Software with other programs within the meaning of the EC Directive on  
the Legal Protection of Computer Programs is available to you from 3Com upon written request.  
EXPORT RESTRICTIONS: You agree that you will not export or re-export the Software or  
accompanying documentation (or any copies thereof) or any products utilizing the Software or such  
documentation in violation of any applicable laws or regulations of the United States or the country in  
which you obtained them.  
TRADE SECRETS; TITLE: You acknowledge and agree that the structure, sequence and organization  
of the Software are the valuable trade secrets of 3Com and its suppliers. You agree to hold such trade  
secrets in confidence. You further acknowledge and agree that ownership of, and title to, the Software  
and all subsequent copies thereof regardless of the form or media are held by 3Com and its suppliers.  
UNITED STATES GOVERNMENT LEGEND: All technical data and Software are commercial in nature  
and developed solely at private expense. The Software is delivered as Commercial Computer Software  
as defined in DFARS 252.227-7014 (June 1995) or as a commercial item as defined in FAR 2.101(a) and  
as such is provided with only such rights as are provided in this License Agreement, which is 3Com’s  
standard commercial license for the Software. Technical data is provided with limited rights only as  
provided in DFAR 252.227-7015 (Nov. 1995) or FAR 52.227-14 (June 1987), whichever is applicable.  
You agree not to remove or deface any portion of any legend provided on any licensed program or  
documentation delivered to you under this License Agreement.  
TERM AND TERMINATION: This license will expire fifty (50) years from the date that you first use the  
Software, if it is not earlier terminated. You may terminate it at any time by destroying the Software  
and documentation together with all copies and merged portions in any form. It will also terminate  
immediately if you fail to comply with any term or condition of this License Agreement. Upon such  
termination you agree to destroy the Software and documentation, together with all copies and  
merged portions in any form.  
GOVERNING LAW: This License Agreement shall be governed by the laws of the State of California as  
such laws are applied to agreements entered into and to be performed entirely within California  
between California residents and by the laws of the United States. You agree that the United Nations  
Convention on Contracts for the International Sale of Goods (1980) is hereby excluded in its entirety  
from application to this License Agreement.  
LIMITED WARRANTY; LIMITATION OF LIABILITY: All warranties and limitations of liability applicable  
to the Software are as stated on the Limited Warranty Card or in the product manual accompanying  
the Software. Such warranties and limitations of liability are incorporated herein in their entirety by this  
reference.  
SEVERABILITY: In the event any provision of this License Agreement is found to be invalid, illegal or  
unenforceable, the validity, legality and enforceability of any of the remaining provisions shall not in  
any way be affected or impaired and a valid, legal and enforceable provision of similar intent and  
economic impact shall be substituted therefor.  
ENTIRE AGREEMENT: This License Agreement sets forth the entire understanding and agreement  
between you and 3Com, supersedes all prior agreements, whether written or oral, with respect to the  
Software, and may be amended only in a writing signed by both parties.  
3Com is a registered trademark of 3Com Corporation.  
3Com Corporation, 5400 Bayfront Plaza, P.O. Box 58145, Santa Clara, CA 95052-8145.  
(408) 764-5000  
NOTES  

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