Microsoft KB Archive/137804

= SNA Server DFT Link Service Outage 0x11 (DSR Failure) =

Article ID: 137804

Article Last Modified on 10/23/2003

-

APPLIES TO


 * Microsoft SNA Server 2.0
 * Microsoft SNA Server 2.1
 * Microsoft SNA Server 3.0

-



This article was previously published under Q137804





SYMPTOMS
When you use the IBMDFT.DLL driver with the Microsoft SNA Server, the receipt of a large amount of data (such as a screen dump) causes the DFT connection to disconnect with an Outage 0x11 message (that is a DSR failure).



CAUSE
The DFT link service is erroneously informing the node that it supports a maximum frame size of 256 bytes. As a result, the node uses a maximum frame size of 256 bytes. When the node has an RU larger than 256 bytes to send to the link service, it segments the RU to stay at or below 256 bytes and sends it in multiple parts. The link service cannot cope with this (expecting to receive only whole RUs), and disconnects the connection.



RESOLUTION
Microsoft has updated the file IBMDFT.DLL to correct this problem.



STATUS
Microsoft has confirmed this to be a problem in SNA Server for Windows NT. This problem was corrected in the latest SNA Server for Windows NT, 2.11 U.S. Service Pack. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Additional query words: prodsna 2.00 2.10

Keywords: KB137804

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.