DOCUMENT:Q262479  08-MAY-2002  [winnt]
TITLE   :Tcpip.sys Does Not Free Unwanted Broadcast Packets
PRODUCT :Microsoft Windows NT
PROD/VER::2000,4.0
OPER/SYS:
KEYWORDS:kbWinNT400PreSP7Fix kbWin2000PreSP2Fix kbWin2000SP2Fix

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft Windows NT Server version 4.0 
 - Microsoft Windows 2000 Server 
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SYMPTOMS
========

A Perfmon analysis of pool nonpaged bytes shows a slow, steady increase that can
result in a system hang after several days. Also, an analysis of the nonpaged
pool tags shows NDPt as the largest consumer of nonpaged pool.

CAUSE
=====

Tcpip.sys does not free broadcast packets that the IP traffic filter driver does
not want to forward.

RESOLUTION
==========

To resolve this problem, obtain the latest service pack for Windows 2000. For
additional information, please see the following article in the Microsoft
Knowledge Base:

   Q260910 How to Obtain the Latest Windows 2000 Service Pack

Windows 2000
------------

The English version of this fix should have the following file attributes or
later:

   Date        Time    Version         Size    File name 
   -----------------------------------------------------
   05/12/2000  06:31p  5.0.2195.2096  308,720  Tcpip.sys
   05/12/2000  06:30p  5.0.2195.2096   16,208  Tdi.sys


Windows NT 4.0
--------------

A supported fix is now available from Microsoft, but it is only intended to
correct the problem described in this article and should be applied only to
systems experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the
fix. For a complete list of Microsoft Product Support Services phone numbers and
information on support costs, please go to the following address on the World
Wide Web:

   http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are normally incurred for support calls may
be canceled, if a Microsoft Support Professional determines that a specific
update will resolve your problem. Normal 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 fix should have the following file attributes or
later:

   Date        Time    Size     File name  Platform
   ------------------------------------------------
   04/06/2000  09:44p  174,448  Tcpip.sys  Intel
   04/06/2000  09:44p  310,704  Tcpip.sys  Alpha



STATUS
======

Windows 2000
------------

Microsoft has confirmed this to be a problem in Windows 2000. This problem was
first corrected in Windows 2000 Service Pack 2.

Windows NT 4.0
--------------

Microsoft has confirmed this to be a problem in Windows NT 4.0.

MORE INFORMATION
================

To enable pool tagging, use Gflags.exe. Click to select the "Enable pool
tagging" check box, and then restart the computer. After you restart the
computer, use Poolmon.exe or "!poolused 2" in the kernel debugger to determine
the high-consumption pool tags.

Additional query words:

======================================================================
Keywords          : kbWinNT400PreSP7Fix kbWin2000PreSP2Fix kbWin2000SP2Fix 
Technology        : kbWinNTsearch kbWinNT400search kbwin2000Serv kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbwin2000ServSearch kbwin2000Search
Version           : :2000,4.0
Issue type        : kbbug
Solution Type     : kbfix

=============================================================================

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