Ibmsync.sys May Cause Connection Loss (161704)


The information in this article applies to:

  • Microsoft SNA Server 2.11
  • Microsoft SNA Server 2.11 SP1
This article was previously published under Q161704

SYMPTOMS

When using a Synchronous Data Link Control (SDLC) card that uses Ibmsync.sys on a multi-drop line, excessive traffic may result in a connection loss. It is possible that this problem could occur with any SDLC card that uses Ibmsync.sys (IBM and Microgate dumb cards). This problem is extremely rare as it has only been observed at one customer site.

RESOLUTION

To work around this problem:
  • Use the 2.1 or 3.0 version of Ibmsync.sys. The problem was only observed in SNA Server versions 2.11 and 2.11 sp1.

STATUS

Microsoft has confirmed this to be a problem in SNA Server version 2.11 and SNA Server 2.11 Service Pack 1 (SP1). This problem was corrected in the latest SNA Server version 2.11 U.S. Service Pack. For information on obtaining this Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

A supported fix to this problem is in development, but has not been fully regression-tested and should be applied only to systems experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft recommends that you wait for the next Service Pack that contains this fix. Contact Microsoft Technical Support for more information on the availability of this fix.
Modification Type:MajorLast Reviewed:10/29/2003
Keywords:kbnetwork KB161704
©2003 Microsoft Corporation. All rights reserved.