Quality of Service (QoS) Parameter Ignored in ATM Multipoint Connections (318374)

The information in this article applies to:

Microsoft Windows 2000 Server SP1
Microsoft Windows 2000 Server SP2
Microsoft Windows 2000 Advanced Server SP1
Microsoft Windows 2000 Advanced Server SP2

This article was previously published under Q318374

SYMPTOMS

If you try to configure a Constant Bit Rate (CBR) or Variable Bit Rate (VBR) Asynchronous Transfer Mode (ATM) multipoint link, all outgoing multipoint communications from the Windows 2000 Server computer ignore the Quality of Service (QoS) parameters, and instead connect with a best effort configuration.

CAUSE

This behavior occurs because of an error in the Windows code, which causes the Windows outgoing multipoint calls (the WSAJoinLeaf function) to ignore the configured QoS parameters.

RESOLUTION

To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack

The English-language version of this fix should have the following file attributes or later:

   Date         Time   Version        Size    File name
   -----------------------------------------------------
   22-Mar-2002  03:02  5.0.2195.5201  10,000  Wshatm.dll

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows 2000 Service Pack 3.

Modification Type:	Minor	Last Reviewed:	9/30/2005
Keywords:	kbHotfixServer kbQFE kbbug kbfix kbnetwork kbWin2000PreSP3Fix kbWin2000sp3fix KB318374