KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q193601: Registry Parameters for Windows NT Load Balancing Service

Article: Q193601
Product(s): Microsoft Windows NT
Version(s): winnt:1.0,4.0
Operating System(s): 
Keyword(s): 
Last Modified: 11-JUN-2002

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

- Microsoft Windows NT Server version 4.0 
- Microsoft Windows NT Load Balancing Service 1.0 
-------------------------------------------------------------------------------

IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

  Q256986 Description of the Microsoft Windows Registry

SUMMARY
=======

The following registry parameters can be modified to change the behavior of
Windows NT Load Balancing Service (WLBS).

WARNING: If you use Registry Editor incorrectly, you may cause serious problems
that may require you to reinstall your operating system. Microsoft cannot
guarantee that you can solve problems that result from using Registry Editor
incorrectly. Use Registry Editor at your own risk.

The registry parameters for WLBS are specified under the following key:

  
  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WLBS\Parameters

  AliveMsgPeriod
  Data type = REG_DWORD
  Range = 100 - 10000
  Default = 1000
  Specifies the period in milliseconds between "I am alive" status messages
  broadcast by each host.

  AliveMsgTolerance
  Data type = REG_DWORD
  Range = 5 - 100
  Default = 5
  Specifies the number of periods to wait after the last message from a host
  before it is declared dead.

  ClusterIPAddress
  Data type = REG_SZ
  Specifies the IP address of the WLBS cluster (also configurable through the
  GUI).

  ClusterName
  Data type = REG_SZ
  Specifies the name used of the WLBS cluster (also configurable through the
  GUI).

  ClusterNetworkAddress
  Data type = REG_SZ
  Specifies the media access control address used by the WLBS cluster (also
  configurable through the GUI).

  ClusterNetworkMask
  Data type = REG_SZ
  Specifies the network mask used by the WLBS cluster (also configurable through
  the GUI).

  ClusterModeOnStart
  Data type = REG_DWORD
  Range = 0 or 1
  Default = 0
  Specifies whether WLBS should start on boot up (also configurable through the
  GUI).

  ConnectionCleanupDelay
  Data type = REG_DWORD
  Range = 0 - 3600000
  Default = 300000
  Specifies TCP connection cleanup delay between cluster mode restarts in
  milliseconds.

  DedicatedIPAddress
  Data type = REG_SZ
  Specifies the dedicated IP address of the WLBS host's NIC (also configurable
  through the GUI).

  DedicatedNetworkMask
  Data type = REG_SZ
  Specifies the dedicated network mask of the WLBS host's NIC (also configurable
  through the GUI).

  DescriptorsPerAlloc
  Data type = REG_DWORD
  Range = 16 - 1024
  Default = 512 Specifies the number of connection descriptors allocated at a
  time.

  HostPriority
  Data type = REG_DWORD
  Range = 1 - 32
  Default = 1
  Specifies the value for the Host Priority (also configurable through the GUI).

  IPToMACEnable
  Data type = REG_DWORD
  Range = 0 or 1
  Default = 0
  Enables automatic network address derivation from primary cluster IP address.

  LicenseKey
  Data type = REG_SZ
  Specifies the license key used by the WLBS cluster (also configurable through
  the GUI).

  MaxDescriptorsAlloc
  Data type = REG_DWORD
  Range = 1 - 512
  Default = 512
  Specifies the maximum number of times connection descriptors can be allocated.

  MaskSourceMAC
  Data type = REG_DWORD
  Range = 0 or 1
  Default = 1
  Set to 1 masks source media access control address in outbound packets,
  preventing switches from learning and forcing them to broadcast packets for
  unknown addresses to all ports. Set to 0 disables masking of the media access
  control address.

  MulticastSupportEnable
  Data type = REG_DWORD
  Range = 0 or 1
  Default = 0
  Enables multicast mode.

  MulticastARPEnable
  Data type = REG_DWORD
  Range = 0 or 1
  Default = 0
  Enables ARPing from cluster IP to multicast media access control in multicast
  mode.

  NBTSupportEnable
  Data type = REG_DWORD
  Range = 0 or 1
  Default = 1
  Enables NBT cluster computer name support.

  RemoteControlEnabled
  Data type = REG_DWORD
  Range = 0 or 1
  Default = 1
  Enables remote control.

  RemoteControlUDPPort
  Data type = REG_DWORD
  Range = 1 - 65535
  Default = 2504
  Specifies remote control UDP port for WLBS to use.

Additional query words: Convoy WLBS

======================================================================
Keywords          :  
Technology        : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbWinNTLBS100 kbWinNTLBSSearch
Version           : winnt:1.0,4.0
Issue type        : kbinfo

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

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.