DOCUMENT:Q147625  13-JUN-2001  [sna]
TITLE   :Configuring Connections Using Eicon SDLC Link Services
PRODUCT :Microsoft SNA Server
PROD/VER:WINDOWS:2.0,2.1,2.11,3.0
OPER/SYS:
KEYWORDS:kb3rdparty

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The information in this article applies to:

 - Microsoft SNA Server, versions 2.0, 2.1, 2.11, 3.0, on platform(s):
    - the operating system: Microsoft Windows NT 
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SUMMARY
=======

When you configure a connection using an Eicon Technologies V3R3 SDLC Link
Service, make sure that all parameters are set up correctly in the WAN Services
Configuration software. The parameters are also available in Connection
Properties of the SNA Server Admin, but they do not over-ride the parameters set
in the WAN Services Configuration software.

MORE INFORMATION
================

The following Advanced Connection Properties parameters of SNA Server Admin on
SNA Server 2.x, or the SDLC and Address tab in the Connection Properties in SNA
Server manager on SNA Server 3.0 are ignored by the Eicon WAN Services SDLC Link
Service:

 - Encoding (NRZ/NRZI)

 - Duplex (Half/Full)

 - Idle Timeout

 - Idle Retries

 - Data Rate (Low/High)

The following parameters are not ignored. However, the configuration in the WAN
Services takes precedence.

 - Max BTU Length (Frame Size N1)

 - Timers

 - Retry Counters

Any Discrepancies between the values displayed in SNA Server and the values in
the Eicon SDLC card generally result in unreliable connections. For example, if
the Max BTU Length (Frame Size N1) is set to a small value in the WAN Services
Configuration software, the connection becomes active, but you are unable to
connect to the LUs. This is due to problems with the BTU size for the LU.

If connecting to a host using the Microsoft 3270 emulator, you will receive the
following error at the bottom of the applet after trying to start a session:

Host Communications Link Error. Session Lost.

The following error will also be displayed in the application log of the event
viewer:

Event ID 23:

Connection <connection_name> using Link Service <link_service_name>
failed.

Qualifier = 0015

SUBCODE INFORMATION: X'1152'

The Eicon WAN Services Configuration program is in the WAN Services Configuration
Program group. In addition, if you use the link service included in SNA Server
Service 2.11 Service Pack 1, click Advanced in the link service configuration
window to the run the WAN Services Configuration program. After you make any
changes in the program, reboot the computer.

For more information, look at Chapter 5 of the Eicon WAN Services for NT System
Guide or WANNT.HLP included in the Eicon V3R3 Drivers and Link Service
software.

The Eicon products discussed here are manufactured by Eicon Technology
Corporation, a vendor independent of Microsoft; we make no warranty, implied or
otherwise, regarding these products' performance or reliability.

Additional query words: prodsna

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Keywords          : kb3rdparty 
Technology        : kbAudDeveloper kbSNAServSearch
Version           : WINDOWS:2.0,2.1,2.11,3.0

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