Symptoms

Consider the following scenario:

  • You establish an L2TP over IPSec connection. The connection is from a Windows Embedded CE 6.0 R3-based device to a server.

  • The Internet Key Exchange (IKE) port of the device receives lots of packets per second. For example, the IKE port receives hundreds of packets per second.

In this scenario, the CPU usage of the device increases, and the device experiences performance issues.

Cause

This issue occurs because the IPSec module is resumed when each packet arrives. Therefore, the device's CPU usage increases, and the performance issues occurs. 

Resolution

Software update information

A supported software update is now available from Microsoft as Windows Embedded CE 6.0 Platform Builder Monthly Update (November 2010). You can confirm this by scrolling to the "File information" section. The package file name contains the product version, date, Knowledge Base article number, and processor type. The package file name format is as follows:

Product version-yymmdd-kbnnnnnn-processor type For example: Wincepb50-060503-kb917590-armv4i.msi is the ARMV4i Windows CE 5.0 Platform Builder fix that is documented in KB article 917590 and that is contained in the May 2006 monthly update. To resolve this problem immediately, click the following article number for information about how to obtain Windows CE Platform Builder and core operating system software updates:

837392 How to locate core operating system fixes for Microsoft Windows CE Platform Builder products

Prerequisites

This software update is supported only if all previously issued software updates for this product have also been applied.

Restart requirement

After you install this software update, you must perform a clean build of the whole platform. To do this, use one of the following methods:

  • On the Build menu, click Clean Solution, and then click Build Solution.

  • On the Build menu, click Rebuild Solution.

You do not have to restart the computer after you apply this software update.

Update replacement information

This update does not replace any updates.

File information

The English version of this software update package 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 item in Control Panel.

Installer files

File name

File size

Date

Time

Wincepb60-101130-kb2467615-armv4i.msi

1,212,416

30-Nov-2010

22:51

Wincepb60-101130-kb2467615-mipsii.msi

1,190,400

30-Nov-2010

22:51

Wincepb60-101130-kb2467615-mipsii_fp.msi

1,190,912

30-Nov-2010

22:51

Wincepb60-101130-kb2467615-mipsiv.msi

1,190,912

30-Nov-2010

22:51

Wincepb60-101130-kb2467615-mipsiv_fp.msi

1,190,912

30-Nov-2010

22:51

Wincepb60-101130-kb2467615-sh4.msi

1,185,792

30-Nov-2010

22:51

Wincepb60-101130-kb2467615-x86.msi

1,143,296

30-Nov-2010

22:51

Files that are included in this hotfix package

File name

File size

Date

Time

Path

Windows embedded ce 6.0_update_kb2467615.htm

7,637

30-Nov-2010

22:16

101130_kb2467615

Ipsec.lib

861,156

23-Nov-2010

16:53

Public\Common\Oak\Lib\Armv4i\Debug

Ipsec.lib

529,152

23-Nov-2010

16:53

Public\Common\Oak\Lib\Armv4i\Retail

Ipsec.lib

818,146

23-Nov-2010

16:53

Public\Common\Oak\Lib\Mipsii\Debug

Ipsec.lib

507,860

23-Nov-2010

16:53

Public\Common\Oak\Lib\Mipsii\Retail

Ipsec.lib

818,400

23-Nov-2010

16:54

Public\Common\Oak\Lib\Mipsii_fp\Debug

Ipsec.lib

508,056

23-Nov-2010

16:53

Public\Common\Oak\Lib\Mipsii_fp\Retail

Ipsec.lib

824,754

23-Nov-2010

16:54

Public\Common\Oak\Lib\Mipsiv\Debug

Ipsec.lib

511,758

23-Nov-2010

16:54

Public\Common\Oak\Lib\Mipsiv\Retail

Ipsec.lib

825,008

23-Nov-2010

16:54

Public\Common\Oak\Lib\Mipsiv_fp\Debug

Ipsec.lib

511,960

23-Nov-2010

16:54

Public\Common\Oak\Lib\Mipsiv_fp\Retail

Ipsec.lib

714,200

23-Nov-2010

16:54

Public\Common\Oak\Lib\Sh4\Debug

Ipsec.lib

476,094

23-Nov-2010

16:54

Public\Common\Oak\Lib\Sh4\Retail

Ipsec.lib

696,730

23-Nov-2010

16:53

Public\Common\Oak\Lib\X86\Debug

Ipsec.lib

479,546

23-Nov-2010

16:53

Public\Common\Oak\Lib\X86\Retail

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

For more information about software update terminology, 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

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