Microsoft KB Archive/840164

= A Windows XP-based computer sends many ARP broadcast requests when the ARP cache entry for the peer expires during a large file transfer =

Article ID: 840164

Article Last Modified on 8/29/2007

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APPLIES TO


 * Microsoft Windows XP Professional
 * Microsoft Windows XP Home Edition

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SYMPTOMS
A Microsoft Windows XP-based computer may send many Address Resolution Protocol (ARP) broadcast requests when the ARP cache entry for the peer expires during a large file transfer.



CAUSE
This problem typically occurs when the Windows XP-based computer has a firewall program installed that blocks ARP replies. For example, if you communicate or if you copy files between a Windows XP-based computer and a destination computer and you turn on the ARP blocking feature, the Windows XP-based computer submits an ARP request to the destination computer when the ARP cache expires on the Windows XP-based computer. In this scenario, the ARP reply from the destination computer is blocked by the firewall. Therefore, Windows XP begins to broadcast many ARP requests.



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

322389 How to obtain the latest Windows XP service pack

Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

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

File information
The English version of this hotfix has the file attributes (or later) 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.

Windows XP 32-bit version
  Date         Time   Version            Size    File name 25-May-2004 00:48  5.1.2600.1535     323,072  Tcpip.sys

Windows XP 64-bit version
  Date         Time   Version            Size    File name 25-May-2004 00:52  5.1.2600.1535   1,106,688  Tcpip.sys



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section. This problem was first corrected in Microsoft Windows XP Service Pack 2.



MORE INFORMATION
This problem may also occur on Microsoft Windows 2000-based computers and on Microsoft Windows Server 2003-based computers.

