Knowledge Base

MS DLC Fails to Respond to TEST Frames.

Article ID: 119399

Article Last Modified on 9/30/2003

Microsoft LAN Manager 2.2 Standard Edition

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.

Additional query words: 2.20

Keywords: KB119399