Microsoft KB Archive/908747

= The Data Link Control stack does not retransmit a lost I-frame packet on a computer that is running Windows 2000 with Service Pack 4 =

Article ID: 908747

Article Last Modified on 10/26/2006

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APPLIES TO


 * Microsoft Windows 2000 Datacenter Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Service Pack 4
 * Microsoft Windows 2000 Professional Edition

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SYMPTOMS
On a computer that is running Microsoft Windows 2000 with Service Pack 4 (SP4), the Data Link Control (DLC) stack does not retransmit a lost I-frame packet.



CAUSE
This problem may occur when the DLC server program on the Windows 2000-based computer communicates with a proprietary IBM computer that acts as a dump terminal. A user on the IBM computer uses the DLC program to perform transactions. If there is any problem during these transactions, the user clicks Dump. Then, the IBM computer sends a Set Asynchronous Balanced Mode Extended (SABME) packet to the Windows-based computer. When the Windows-based computer receives this request, a new DLC session starts. After this, the DLC server program sends an I-frame packet to the IBM computer. The I-frame packet reaches the IBM computer but is then lost. The I-frame packet is not retransmitted by the Windows 2000 DLC stack.



Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
To apply this hotfix, you must have Windows 2000 Service Pack 4 (SP4) installed.

Restart requirement
You must restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For more information about how software update packages are named, click the following article number to view the article in the Microsoft Knowledge Base:

816915 New file naming schema for Microsoft Windows software update packages

For more information about the terminology that is used in this article, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbbug kbfix kbwin2000presp5fix kbpubtypekc kbhotfixserver kbqfe KB908747

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