DOS LAN SERVICES TROUBLESHOOTING

If you have trouble while setting up or using DOS LAN Services,
the solutions presented in this document should help.

If you do not find the problem you are having addressed in this file,
contact your IBM support representative.

This document contains the following sections:

1. You Have Problems Setting Up a Network Card
2. Your Computer Stops Running during DOS LAN Services Setup
3. DOS LAN Services Will Not Start After a Successful Setup
4. No Computers Are Listed
5. The Computer You Want to Connect to Is Not Listed
6. Additional Notes about DOS LAN Services

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1. YOU HAVE PROBLEMS SETTING UP A NETWORK CARD
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If you encounter problems while installing and configuring a network
card, try the following:

o   Review the instructions in the documentation that came with your
    network card.

o   If a diagnostics software program is included with your network
    card, try running the program. For details, see the
    documentation that came with your network card.

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2. YOUR COMPUTER STOPS RUNNING DURING DOS LAN SERVICES SETUP
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If DOS LAN Services Setup stops running, it may be caused by one
of the following problems:

o   Setup was unable to correctly identify your hardware. Run Setup
    again without hardware detection by inserting the DOS LAN
    Services diskette in drive A or drive B, and then typing the
    following at the DOS command prompt:

      a:setup /i

    or

      b:setup /i

    The /I option causes Setup to skip hardware detection. When
    Setup displays the list of hardware and software settings, make
    sure the settings match the hardware you are using.

o   You are running a memory-resident program (also known as a
    terminate-and-stay-resident program, or TSR) that conflicts with
    Setup. Disable any commands in your CONFIG.SYS and AUTOEXEC.BAT
    files that start memory-resident programs. To do this, carry out
    the following procedure.

To disable memory-resident programs:

    1.  Use any text editor to open your AUTOEXEC.BAT   file.

    2.  Insert the REM command in front of every command line
         in your AUTOEXEC.BAT file, except the @ECHO OFF,
         PROMPT, and PATH commands.

    3.  Save the file, and then exit the text editor.

    4.  Restart your computer.

    5.  Try running DOS LAN Services Setup again.

If Setup runs, remove the REM commands you added to your
AUTOEXEC.BAT file after Setup is complete.

If Setup still does not run, repeat the preceding procedure for your
CONFIG.SYS file. In your CONFIG.SYS file, disable every command
line, except lines that load device drivers that are needed to run
hardware (such as a disk drive, monitor, or keyboard) and lines that
begin with FILES or BUFFERS commands. If Setup runs, remove the REM
commands you added to your CONFIG.SYS file after Setup is complete.

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3. DOS LAN SERVICES WILL NOT START AFTER A SUCCESSFUL SETUP
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This section describes what to do if DOS LAN Services will not
start after you complete Setup.

The following list is an overview of steps you can take to solve
this problem:

o   Make sure that all connections (cables and connectors) are
    securely fastened and that the network card is securely in its
    slot.

o   If a diagnostics program is included with your network card, try
    running the program. See the documentation that came with your
    network card for details.

o   Make sure the correct base memory address and interrupt (IRQ)
    are specified for your network card. For more information, see
    "Checking Your Network-Card Settings" later in this section.

o   If you are loading the DOS LAN Services device drivers into
    the upper memory area, try loading them in conventional memory
    instead. For more information, see "Loading DOS LAN Services
    Device Drivers into Conventional Memory" later in this section.

o   Make sure the device command for EMM386 in your CONFIG.SYS file
    excludes the memory address used by your network card. For more
    information, see "Making Sure EMM386 Does not Conflict with Your
    Network Card" later in this section.

o   Make sure that your network card is assigned to a different
    interrupt (IRQ) than your mouse. For more information about
    determining what interrupt to assign to your network card, see
    the documentation that came with your network card.

o   You may need to change the configuration settings you assigned
    to your network card. If you have an ISA card that is configured
    by using jumpers and switches, you may need to change some of
    these settings. If you have a software-configured card, use the
    configuration program that came with your network card to change
    your configuration settings. See the documentation that came
    with your network card for details.

3.1 CHECKING YOUR NETWORK-CARD SETTINGS

The DOS LAN Services Setup program examines your computer's
configuration and attempts to determine your network card's base
memory address and interrupt (IRQ). If Setup incorrectly identifies
these, DOS LAN Services will not start.

For information about determining the correct settings yourself, see
your network-card documentation.

After you determine the correct base memory address and interrupt,
you can specify them by running Setup again.

To change the base memory address or interrupt setting:

1.  Change to the directory that contains your DOS LAN Services
    files. For example, if the files are in the C:\NET directory,
    type the following commands at the DOS command prompt:

      c:

      cd \net

2.  At the command prompt, type the following:

      setup

    The DOS LAN Services Setup program starts. After Setup
    examines your computer's configuration, it displays a list of
    settings.

3.  Select the Network Card field by pressing the UP ARROW key, and
    then press ENTER. A list of options for modifying your
    network-card settings appears.

4.  Select the "Edit settings for network card driver" option by
    pressing the UP ARROW key, and then press ENTER. A list of your
    network-card settings appears.

5.  If you want to change the setting for your network card's
    interrupt, proceed to step 6. If you want to change the setting
    for your network card's base memory address, do the following:

    o  Select the setting for the base memory address by pressing
       the UP ARROW key, and then press ENTER. This setting is
       called Memory Window, RAM Address, or something similar.
       You may have to press PAGE UP or PAGE DOWN to find this
       setting.

       A list of values appears.

    o  Select the base memory address you want by pressing the
       UP ARROW or DOWN ARROW key, and then press ENTER.

       The new value appears on the base memory address line in
       the list of network card settings.

6.  If you do not want to change your network card's interrupt
    setting, proceed to step 7. If you want to change the setting
    for your network card's interrupt, do the following:

    o  Select the interrupt setting by pressing the UP ARROW key,
       and then press ENTER. This setting is named IRQ_Level,
       Interrupt, or something similar. You may have to press
       PAGE UP or PAGE DOWN to find this setting. A list of values
       appears.

    o  Select the interrupt you want by pressing the UP ARROW or
       DOWN ARROW key, and then press ENTER. The new value appears
       on the interrupt line in the list of network card settings.

7.  Choose "The listed options are correct" by pressing ENTER. Then
    follow the instructions on your screen to complete Setup.

8.  When Setup is complete, restart your computer by pressing ENTER.

    If DOS LAN Services still does not start, proceed to the
    following section.

3.2 MAKING SURE EMM386 DOES NOT CONFLICT WITH YOUR NETWORK CARD

If you use the EMM386 memory manager, make sure that it does not use
the same memory that your network card uses.

To ensure that EMM386 does not conflict with your network card:

1.  Use any text editor to open your CONFIG.SYS file.

2.  Look for the device command line for the EMM386 memory manager.
    It should look similar to the following:

      device=c:\dos\emm386.exe

    If your CONFIG.SYS file does not contain a device command for
    EMM386, you are not using it. Proceed to the following section,
    "Loading DOS LAN Services Device Drivers into Conventional
    Memory."

3.  If your CONFIG.SYS file contains a device command for EMM386,
    add the following to that command line:

      x=mmmm-nnnn

    For mmmm, specify the base memory address of your network card.
    For nnnn, specify a value that is 32KB greater than mmmm by using the
    following method:

    If the second character in mmmm is 8, the last three characters
    you specify for nnnn should be FFF. For example, if the base
    memory address is D800, your device command line should look
    similar to the following:

      device=c:\dos\emm386.exe x=d800-dfff

    If the second character in mmmm is 0, the last three characters
    you specify for nnnn should be 7FF. For example, if the base
    memory address is c000, your device command line should look
    similar to the following:

      device=c:\dos\emm386.exe x=c000-c7ff

    Note: This method for determining the value for nnnn is based
    on a network card device driver that uses 32KB of memory. The
    values for mmmm and nnnn are hexadecimal numbers. Check your
    network card documentation to see if your card uses more or less
    than 32K of memory. If it does, adjust the value for nnnn
    accordingly. For example, if your card uses only 16KB of memory,
    the characters to specify for nnnn in the preceding two examples
    would be DBFF and C3FF, respectively.

4.  Save your CONFIG.SYS file, and then exit the text editor.

5.  Restart your computer. If DOS LAN Services still does not
    start, proceed to the following section.

3.3 LOADING DOS LAN SERVICES DEVICE DRIVERS INTO CONVENTIONAL
    MEMORY

If you used the DEVICEHIGH command in your CONFIG.SYS file to load
any DOS LAN Services device drivers into the upper memory area,
try loading these device drivers into conventional memory instead.
It is possible that a device driver loaded into the upper memory
area is conflicting with another device driver or program.

To load device drivers into conventional memory:

1.  Use any text editor to open your CONFIG.SYS file.

2.  In your CONFIG.SYS file, look for the DEVICE or DEVICEHIGH
    command lines that load the following:

    o   PROTMAN.DOS

    o   Your network-card device driver

    o   DLSHELP.SYS

    These command lines should appear consecutively.

3.  If any of these command lines contain a DEVICEHIGH command,
    change it to DEVICE.

4.  Save your CONFIG.SYS file, and then exit the text editor.

5.  Restart your computer.

    If DOS LAN Services still does not start, call your IBM
    support representative.


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4. NO COMPUTERS ARE LISTED
--------------------------

If you do not see any computers listed when you display the Browse
screen using the pop-up interface or type NET VIEW at the DOS
command prompt, try the following:

o   Make sure your network-card settings are correct.

    For more information, see "Checking Your Network-Card Settings"
    earlier in this document.

o   Sometimes, when a computer in your domain is turned off or
    restarted, you will not be able to see other computers on the
    network for a few minutes. Wait 15 minutes and then check again.

o   If you know the name of the shared directory or printer you want
    to connect to, try connecting to it even if it is not listed. Do
    this by typing the path of the shared directory or printer in
    the Path field of the Disk Connections or Printer Connections
    screen. Or specify the path with the NET USE command at the
    DOS command prompt.

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5. THE COMPUTER YOU WANT TO CONNECT TO IS NOT LISTED
----------------------------------------------------

If a particular computer on the network is not listed when you
display the Browse screen using the pop-up interface or when you type
NET VIEW at the DOS command prompt, one of the
following might be the cause:

o   The computer might have been recently restarted. Wait a couple
    minutes, and then try again.

o   If a computer is part of domain (other than your own), you
    cannot use the Browse screen in the pop-up interface to display
    it. To see a list of computers in another domain, you must
    use the NET VIEW command with the /DOMAIN option at the
    DOS command prompt. For more information, type the following
    at the command prompt:

      net help view

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6. ADDITIONAL NOTES ABOUT DOS LAN SERVICES
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6.1 IF YOU HAVE AN 8088 PROCESSOR

You must use the basic redirector if your computer has an 8088
processor. The basic redirector is the default.

6.2 SETUP IS SLOW ON SOME COMPUTERS

On some computers, particularly those with 8088 processors,
DOS LAN Services Setup may appear to pause for as long as
5 minutes. Do not restart your computer.

6.3 USING QUALITAS MAXIMIZE OR QUARTERDECK OPTIMIZE

In some rare situations, Qualitas Maximize and Quarterdeck Optimize
may attempt to load some DOS LAN Services commands into the upper
memory area. If this causes problems, use Maximize or Optimize
in manual mode and do not use it to load DOS LAN Services commands
into the upper memory area. DOS LAN Services automatically loads
its commands into the upper memory area, if there is enough space.
For details on using manual mode, see your Maximize or Optimize
documentation.

6.4 DOS LAN SERVICES CANNOT BE INSATALLED ON A DOUBLEDISK DRIVE

You cannot use DOS LAN Services on a Vertisoft Systems
DoubleDisk drive. You must install DOS LAN Services on another
type of drive.

6.5 MAKING THE POP-UP INTERFACE VISIBLE ON A MONOCHROME MONITOR

To force the DOS LAN Services pop-up interface to appear in
monochrome mode, type MODE MONO at the DOS command prompt before
you display the pop-up interface, or include MODE MONO in your
AUTOEXEC.BAT file.

6.6 USING QEMM LASTDRIVE

If you add drive letters using QEMM Lastdrive and then use DOS LAN
Services to connect to one of them, the connection will work but
no information about the shared resources on it will be displayed.

6.7 IF YOUR COMMAND.COM FILE IS NOT IN THE ROOT DIRECTORY

DOS LAN Services will not start if your COMMAND.COM file is not in
the root directory of your startup drive unless you have a SHELL
command in your CONFIG.SYS file that specifies the location of
COMMAND.COM. For information about the COMMAND and SHELL commands,
see your DOS documentation.

6.8 ENABLING VALIDATED LOGONS TO LAN SERVER DOMAINS

You must run the DOS LAN Services full redirector to have your
user name and password validated by a IBM LAN Server server.
