Microsoft KB Archive/258100

= Performance Problems May Occur If a Process Uses the Same Endpoint for Both TCP and UDP =

Article ID: 258100

Article Last Modified on 2/20/2007

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Professional Edition

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This article was previously published under Q258100





SYMPTOMS
When a program uses both User Datagram Protocol (UDP) and Transmission Control Protocol (TCP) to bind to the same endpoint (the same port and TCP/IP address), performance problems can occur under load. Note that this problem usually occurs with servers that are receiving thousands of items per minute.

This problem has not been reported in a production environment.



CAUSE
This problem can occur if a TCP socket is listening on the same port as a UDP socket.



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



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 2.

Keywords: kbbug kbfix kbwin2000presp2fix KB258100

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