Packets May Be Dropped When A Very Large Number of Fragmented UDP Packets Are in Use

This article was previously published under Q255593
This article has been archived. It is offered "as is" and will no longer be updated.
When fragmented frames are in use on your network, you may experience intermittent network connectivity problems, and this may include complete loss of connectivity to network resources.
This problem can occur because the TCP/IP driver has a limited number of reassembly queues. After these queues are filled, the driver drops new incoming fragments until the queues recover.
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 theMicrosoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack

Microsoft has confirmed that this is a problem in Windows NT 4.0.

This problem was first corrected in Windows 2000 Service Pack 1.
More information
The conditions that can create this problem are very uncommon because the host would have to be receiving great numbers of large fragments in a high-bandwidth network. Because of this, this problem has only been noted to occur in 100 megabyte (MB) or greater environments.

Article ID: 255593 - Last Review: 10/26/2013 06:22:00 - Revision: 4.0

Microsoft Windows 2000 Server, Microsoft Windows 2000 Professional Edition

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