H166168:  NETFINITY ESCON: PROBLEMS WITH SERVICE PACK 4


 TEXT:

 If a Netfinity ESCON adapter, Type 9086, Model 001, is
 installed in your server, and you are using Communication
 Server for NT (CS/NT) or Microsoft SNA (Systems Network
 Architecture) Server (with Encryption enabled) as your
 Gateway Communication Server, be aware of the following:

 IBM Communications Servers V5.0, V5.01, V6.0 and V6.01 for
 Windows NT currently does not support Service Pack 4 for Windows
 NT 4.0. A change in the Windows NT kernel is causing various
 components to fail. Do not install Windows NT Service Pack 4.

 Microsoft has been alerted to the problem and we are waiting
 for an official response.

 Note: Microsoft SNA Server also has problems with Service Pack
 4 when Encryption is enabled.

 SYMPTOM:

 When using a Netfinity ESCON Adapter, Type 9086, Model 001, and
 running Communication Server for NT, or Microsoft SNA Server
 version 4.0 with encryption "Enabled", various components may
 fail if Service Pack 4 is applied to Windows NT 4.0.

 PROBLEM ISOLATION AIDS:

 - The system is one of the following IBM Netfinity servers that
   supports the Netfinity ESCON Adapter:

       a Netfinity 5000 server, Type 8659, any Model.
       a Netfinity 5500 server, Type 8660, any Model.
       a Netfinity 5500-M10 server, Type 8661, any Model.
       a Netfinity 7000 server, Type 8651, any Model.
       a Netfinity 7000-M10 server, Type 8680, any Model.

 - The system is configured with a Netfinity ESCON Adapter
   Type 9086, Model 001.

 NOTE - The current list of products that have been tested with
 current models of IBM Netfinity and PC Servers is available at
 the following URL:

      http://www.pc.ibm.com/us/compat/
      click on "Host Attach/Mainframe Adapters"

 - The system is running one of the following with
   Service Pack 4 applied to Windows NT 4.0:

     - Microsoft SNA Server, ver. 4.0.
     - Communication Server for NT (CS/NT).

 FIX:

 1) If running with CS/NT -- DO NOT USE SP4.
 2) If running SNA Server with Encryption -- DO NOT USE SP4.

 Note: All other cases - SP4 should be installed.

 TRADEMARKS:

 Microsoft, Windows, Windows NT, and the Windows logo are
 trademarks of Microsoft Corporation in the United States and/or
 other countries.



DATE: March 29, 1999