DOCUMENT:Q199288  03-APR-2002  [winnt]
TITLE   :H-Node Multihomed Host May Send Broadcasts Immediately
PRODUCT :Microsoft Windows NT
PROD/VER::3.51,4.0
OPER/SYS:
KEYWORDS:kbnetwork

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

 - Microsoft Windows NT Workstation versions 3.51, 4.0 
 - Microsoft Windows NT Server versions 3.51, 4.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

When you configure a network adapter on a multihomed h-node host to query
Windows Internet Name Service (WINS), another network adapter without this
configuration may appear to follow the h-node type name resolution method
correctly.

NetBT sends a name query to WINS from the network adapter that is configured to
query WINS, but almost immediately sends a name query broadcast from the network
adapter that is not configured to query WINS. The nonconfigured network adapter
does not wait for WINS name resolution to be unsuccessful.

CAUSE
=====

This behavior occurs because a multihomed computer places calls on all adapters
to which NetBT is bound, and each adapter works independently to resolve the
name and to make a connection.

RESOLUTION
==========

To resolve this problem, use an Lmhosts file to preload entries in the NetBIOS
cache table. This cache is checked first before the host queries WINS or sends a
broadcast.

You can also configure the host to use p-node so that it uses only WINS and never
broadcasts.

STATUS
======

This behavior is by design.

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

The NetBT node type determines what method NetBT uses to register and resolve
names. An h-node system queries the name server first, and then broadcasts.

Typically, all adapters in an h-node type host are configured to use WINS.

REFERENCES
==========

For additional information, please see the following articles in the Microsoft
Knowledge Base:

   Q120642 TCP/IP and NBT Configuration Parameters for Windows 2000 or Windows
   NT

   Q119493 NetBIOS over TCP/IP Name Resolution and WINS

   Q105997 Differences Between the HOSTS and LMHOSTS Files in Windows NT

Additional query words:

======================================================================
Keywords          : kbnetwork 
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT351search kbWinNT400search kbWinNTW351search kbWinNTW351 kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbWinNTS351 kbWinNTS351search
Version           : :3.51,4.0
Issue type        : kbprb

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

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.

Copyright Microsoft Corporation 2002.