MS DLC Fails to Respond to TEST Frames. (119399)


The information in this article applies to:

  • Microsoft LAN Manager 2.2
This article was previously published under Q119399

SYMPTOMS

Applications fail if they are based on the real mode Microsoft Data Link Control (MSDLC) stack and use TEST frames to initiate a connection.

CAUSE

As the default, MSDLC does not pre-allocate SAP transmit buffers, and does not respond to TEST frames sent to any SAP except SAP 0 (Global SAP, reserved).

RESOLUTION

Make this entry to force MSDLC to pre-allocate transmit buffers on SAPs: 
    PROTOCOL.INI
   [msdlc_xif]
        trxbuffers = x
where x is the number of buffers to allocate, typically 2.
Modification Type:MajorLast Reviewed:9/30/2003
Keywords:KB119399
©2003 Microsoft Corporation. All rights reserved.