KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q162834: RRAS Stops Routing After Encountering Zero Checksum

Article: Q162834
Product(s): Microsoft Windows NT
Version(s): WinNT:4.0
Operating System(s): 
Keyword(s): kb3rdparty kbinterop kbnetwork
Last Modified: 09-AUG-2001

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

- Microsoft Windows NT Server version 4.0 
- Microsoft Routing and Remote Access Service Update for Windows NT Server version 4.0 
-------------------------------------------------------------------------------


SYMPTOMS
========

Your Routing and Remote Access Service (RRAS) Server may stop routing network
between segments and you may receive some event log messages regarding checksum
errors from neighbors.

CAUSE
=====

One of your neighboring routers has sent a packet containing something other
than ffff. When the checksum of a packet equals zero, which is illegal, RRAS
expects to receive ffff.

STATUS
======

Microsoft has confirmed this to be a problem in Routing and Remote Access Update
for Windows NT Server version 4.0. This problem was corrected in the Routing
& Remote Access Service Hotfix Update. You can obtain this update from
Microsoft's World Wide Web Site on the Internet at the following location:

  http://www.microsoft.com/ntserver/commserv/exec/feature/routing.asp

NOTE: Because the Microsoft Web site is constantly updated, the site address may
change without notice. If this occurs, link to the Microsoft home page at the
following address:

  http://www.microsoft.com/


Additional query words: protocol
======================================================================
Keywords          : kb3rdparty kbinterop kbnetwork 
Technology        : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbAudDeveloper kbRRASNTSearch kbRRASNT400
Version           : WinNT:4.0
Issue type        : kbbug

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

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.