DOCUMENT:Q279335 08-MAY-2002 [sna] TITLE :Cannot Add the Same Workstation Restrictions to Multiple TN3270 PRODUCT :Microsoft SNA Server PROD/VER:: OPER/SYS: KEYWORDS:kbDSupport kbhis2000 ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Host Integration Server 2000 ------------------------------------------------------------------------------- SYMPTOMS ======== If you add the same workstation name or TCP/IP (Transfer Control Protocol/Internet Protocol) address to multiple TN3270 LUs in SNA Manager on Host Integration Server (HIS) 2000, you may receive the following error message: The name or alias has already been used. This problem does not occur with SNA Server 4.0. CAUSE ===== The HIS 2000 management interface incorrectly checks the validity of TN3270 LU restrictions to make sure there are no duplicate entries. RESOLUTION ========== A supported fix is now available from Microsoft, but it is only intended to correct the problem described in this article and should be applied only to systems experiencing this specific problem. This fix may receive additional testing at a later time, to further ensure product quality. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Host Integration Server 2000 service pack that contains this fix. To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, please go to the following address on the World Wide Web: http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS NOTE: In special cases, charges that are normally incurred for support calls may be canceled, if a Microsoft Support Professional determines that a specific update will resolve your problem. Normal support costs will apply to additional support questions and issues that do not qualify for the specific update in question. The English version of this fix should have the following file attributes or later: File name Date Time ------------------------------------------------------------------ snacfg.dll 12/05/2000 12:00PM NOTE: Because of file dependencies, the most recent fix that contains the above files may also contain additional files. WORKAROUND ========== If you need to allow a user to have access to a specific set of TN3270 display LUs, the following configuration may resolve the problem: 1. Create an LUA (Logical Unit Application) pool. 2. Assign the LUA LUs to the LUA pool instead of assigning them to the TN3270 server. 3. Assign the LUA pool to the TN3270 server. 4. Add the workstation name or TCP/IP address restriction to the LUA pool from the previous step. If you need to allow multiple users to have access to a specific set of TN3270 display LUs, then a unique LUA pool must be created for each user and the steps outlined here must be repeated for each pool. STATUS ====== Microsoft has confirmed this to be a problem in Microsoft Host Integration Server 2000. MORE INFORMATION ================ The following steps can be used to reproduce the problem: 1. Assign two (or more) LUs to the TN3270 server in SNA Manager. 2. Configure one of the TN3270 LUs such that it is restricted for access by a workstation called "Client1". 3. Configure the other TN3270 LU and add Client1 as the workstation name. When the changes to the second TN3270 LU are applied, the result is the error message described in the "Symptoms" section. The same problem occurs if a TCP/IP address is used instead of a workstation name. You can assign the same workstation name or TCP/IP address to multiple TN3270 LUs if you want to allow a user to have access to multiple TN3270 sessions in an environment that does not tend to allow users access to all of the available TN3270 LUs. For additional information about restricting access to TN3270 LUs, click the article number below to view the article in the Microsoft Knowledge Base: Q190446 Restricting Access to TN3270 LUs Additional query words: ====================================================================== Keywords : kbDSupport kbhis2000 Technology : kbAudDeveloper kbHostIntegServ2000 Version : : Issue type : kbbug Solution Type : kbfix ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2002.