The information in this article applies to:
- Microsoft SNA Server for Windows NT, versions 2.0, 2.1, 2.11,
and 2.11.sp1
SUMMARY
SNA Server does not provide a direct way of assigning LUs to a specific
workstation using the SNA Server Admin program. The only way to assign LUs
to a workstation is by setting the LocalLUs parameter.
MORE INFORMATION
SNA Server version 2.x does not provide a centralized method of assigning
LUs to workstations. The SNA Server Admin does allow the assignment of LUs
to a particular user or group. The local LU feature implemented in SNA
Server client software can be used to limit which LUs can be used on the
client computer, and it can be used to implement LU assignment to a
workstation.
The following procedure can be implemented on an MS-DOS, Microsoft Windows
3.x, Microsoft Windows NT, and Microsoft Windows 95 client.
NOTE: The steps that are platform dependent will identify the procedure to
follow for each component.
- Determine what LUs will belong to which workstations, and what users
will be using each workstation.
- Using SNA Admin, assign specific LUs to the users or groups that they
will be accessing from these workstations. The assignment of LU pools
is not supported when you implement this specific procedure.
- In the SNA client configuration, specify the specific LUs that the
workstation will be limited to, using the LocalLU parameter:
MS-DOS clients
--------------
- Open the Sna.ini file on each MS-DOS workstation using Edit.com or
similar text editor.
- Add the following entry in the [SnaBase] section of the Sna.ini file:
LocalLUS=<LocalLUName1> <LocalLUName2> ... <LocalLUNamex>
where <LocalLUNamex> are LU names separated by spaces.
- Close and save the Sna.ini file.
Windows 3.X/Windows for Workgroups clients
------------------------------------------
- Make a backup of the Win.ini file. Open the Win.ini file from
the Windows root directory using Notepad.
- Add the following entry in the [Wnap] section of Win.ini:
LocalLUS=<LocalLUName1> <LocalLUName2> ... <LocalLUNamex>
where <LocalLUNamex> are LU names separated by spaces.
- Close and save the Win.ini file.
Windows NT clients
------------------
WARNING: Using Registry Editor incorrectly can cause serious, system-
wide problems that may require you to reinstall Windows NT to correct
them. Microsoft cannot guarantee that any problems resulting from the
use of Registry Editor can be solved. Use this tool at your own risk.
- Run the Registry Editor (Regedt32), and locate the following key:
HKEY_LOCAL_MACHINE
SYSTEM
CurrentControlSet
Services
SnaBase
Parameters
- Add the following value to the Registry key:
Value Name: LocalLUS
Data Type: REG_MULTI_SZ
Data: <LocalLUName1> <LocalLUName2> ... <LocalLUNamex>
where <LocalLUNamex> are LU names separated by spaces.
- Close the Registry Editor.
Windows 95 clients
------------------
WARNING: Using Registry Editor incorrectly can cause serious, system-
wide problems that may require you to reinstall Windows NT to correct
them. Microsoft cannot guarantee that any problems resulting from the
use of Registry Editor can be solved. Use this tool at your own risk.
- Run the Registry Editor (REGEDIT), and locate the following key:
HKEY_LOCAL_MACHINE
SOFTWARE
Microsoft
SnaBase
Parameters
- Add the following string value to the Registry key:
String Value Name: LocalLUS
Data: <LocalLUName1> <LocalLUName2> ...<LocalLUNamex>
where <LocalLUNamex> are LU names separated by spaces.
- Close the Registry Editor.
After you follow these steps, run the 3270 application. The list of
available LUs for that workstation should match those entered in the
LocalLUS parameter. If you do not have access to the LU chosen, the
emulator should report an error. To correct this problem, add the LU to the
user (or group) record in SNA Admin.
This procedure should affect all emulators that use the SNA Server client.
The problems of assigning LUs to workstations with this method are the
following:
- Station is limited to the LUs listed; no matter what user is signed on.
- Security for a broad range of LUs must be assigned to all users.
- The administrator is responsible for securing the Win.ini file
(Windows 3.x), SNA.INI (MS-DOS), or the Registry (Windows 95, Windows
NT) against users wishing to broaden their LU selection.
NOTE: There is currently a problem assigning Printer LUs. At present,
Printer LUs are mapped to Display LUs by mistake.
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