Microsoft KB Archive/148966

= The TN3270 Server Does Not Check for a Best LU to IP Match =

Article ID: 148966

Article Last Modified on 11/19/2003

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APPLIES TO


 * Microsoft SNA Server 3.0, when used with:
 * Microsoft Windows NT 4.0
 * Microsoft SNA Server 2.11 Service Pack 1, when used with:
 * Microsoft Windows NT 4.0

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This article was previously published under Q148966





SYMPTOMS
The TN3270E server does not do any checking of which LU to IP matches are better than others.



WORKAROUND
One possible workaround is to reorder the pools in the configuration. Place the pool with the pool you want the user to use first last in the list.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Microsoft is researching this problem and will post more information in this article when the information becomes available.



MORE INFORMATION
The following example shows where the TN3270 Server Service may allocate an user's session to a pool that the administrator did not expect:

Pool Configuration

 * Pool_A is configured to allow any workstation access. To do this, assign the IP Address to 0.0.0.0 and the subnet mask to 255.255.255.255 in the Edit Configuration for  dialog box.
 * Pool_B is configured to only allow users on subnet 130.1.x.x. To do this, assign the IP Address to 130.1.x.x and the subnet mask to 255.255.0.0 in the Edit Configuration for  dialog box.

The Administrator's Preference
The Administrator's preference is for users to get a session through Pool_B first, and then Pool_A second.

The Result
If a workstation from the 130.1.x.x subnet tries to make a connection to the TN3270E Server, the TN3270E Server will not check for the best LU to IP match causing the workstation to potentially get an LU from Pool_A.

Additional query words: 2.11 prodsna sp1 service pack 1

Keywords: kbbug kbpending KB148966

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