RSVP does not allocate bandwidth correctly on your Windows 2000-based computer when you use QoS (811424)

CAUSE

This problem occurs when the following conditions are true:

You configure your network adapter with three Internet Protocol (IP) addresses.
You configure the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Qossp registry subkey with the REG_DWORD EnablePriorityBoost entry set to a value of 1.
You run a QoS program with the SERVICE_NO_QOS_SIGNALLING service type.

In this case, the SERVICE_NO_QOS_SIGNALING flag may be set per flow. This may prevent RSVP signaling.

RESOLUTION

Service pack information

This problem was first corrected in Windows 2000 Service Pack 4.

Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows 2000 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

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

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question. 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.

   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   16-Jan-2003  20:26  5.0.2195.6655     176,912  Rsvp.exe

MORE INFORMATION

For more information about the Rsvptrace tool, visit the following Microsoft Web site:

http://www.microsoft.com/windows2000/techinfo/reskit/en-us/default.asp?url=/windows2000/techinfo/reskit/en-us/regentry/93229.asp

For more information about QoS in a Windows 2000 environment, visit the following Microsoft Web site:

http://www.microsoft.com/resources/documentation/Windows/2000/server/reskit/en-us/cnet/cndc_qos_psbp.asp

For additional information about RSVP, click the following article number to view the article in the Microsoft Knowledge Base:

227261 Description of the Resource Reservation Protocol (RSVP)

For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the following article number to view the article in the Microsoft Knowledge Base:

265173 The Datacenter Program and Windows 2000 Datacenter Server product

For additional information about Microsoft software updates, 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