DOCUMENT:Q197863  10-AUG-2001  [winnt]
TITLE   :WLBS Cluster Servers Show Multiple Default Hosts
PRODUCT :Microsoft Windows NT
PROD/VER:winnt:4.0
OPER/SYS:
KEYWORDS:

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The information in this article applies to:

 - Microsoft Windows NT Server version 4.0 
 - Microsoft Windows NT Server, Enterprise Edition 
 - Microsoft Windows NT Load Balancing Service 
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SYMPTOMS
========

After you start the cluster hosts, the hosts report that convergence has
completed, but more than one host is a default.

CAUSE
=====

Probably causes are as follows:

1. The cluster hosts have become subnetted so that all hosts are not reachable
   on the same network.

2. Different network addresses are being used across the cluster, and the
   cluster's primary IP address was not entered into the TCP/IP configuration
   for the Windows NT Load Balancing Service (WLBS) Virtual NIC.

3. Different clusters are running on the same subnet.

RESOLUTION
==========

To resolve these issues, use the corresponding resolutions below:

1. Be sure that all cluster hosts can communicate with each other.

2. In the case of different network addresses being used, TCP/IP will not detect
   an address conflict, and multiple clusters will exist. Be sure to use one
   cluster primary IP address and a corresponding network address on all hosts
   within the same cluster, and be sure to enter the primary IP address in the
   TCP/IP configuration for the WLBS Virtual NIC.

3. If you use different primary IP addresses, each with unique corresponding
   network addresses, on various cluster hosts, you can create multiple clusters
   on the same subnet. This is a not a problem unless this behavior was not
   intended.

Additional query words: Convoy

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Keywords          :  
Technology        : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTSEntSearch kbWinNTS400search kbWinNTS400 kbWinNTLBSSearch
Version           : winnt:4.0
Issue type        : kbprb

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