Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2


Using Network Load Balancing Manager, you can configure and manage your Network Load Balancing clusters and all cluster hosts from a single computer, and you can also replicate the cluster configuration to other hosts. You can start Network Load Balancing Manager from the command-line using the command nlbmgr.exe, which is installed in the systemroot\System32 folder in the Windows Server 2003 family of products.


nlbmgr [/help] [/noping] [/hostlist FileName] [/autorefresh [Interval]]

  • /help
    Displays help at the command prompt.
  • /noping
    Network Load Balancing Manager will not ping the hosts prior to trying to contact them through Windows Management Instrumentation (WMI). Use this option if you have disabled ICMP on all available network adapters. If you use this option, you will experience a delay if Network Load Balancing Manager attempts to contact a host that is not available.
  • /hostlist FileName
    After Network Load Balancing Manager starts, the hosts specified in FileName will be loaded into Network Load Balancing Manager.
  • /autorefresh [Interval]
    Causes Network Load Balancing Manager to refresh its host and cluster information every [Interval] seconds. If no interval is specified, the information is refreshed every 60 seconds.
  • As part of the Windows Server 2003  Administration Tools Pack, Network Load Balancing Manager can also be installed and used on Windows XP Professional. You can use Network Load Balancing Manager on Windows XP Professional only to manage Network Load Balancing clusters on remote computers running the Windows Server 2003 family of products. You can not install the Network Load Balancing service itself on Windows XP Professional.

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Format Meaning


Information that the user must supply


Elements that the user must type exactly as shown

Ellipsis (...)

Parameter that can be repeated several times in a command line

Between brackets ([])

Optional items

Between braces ({}); choices separated by pipe (|). Example: {even|odd}

Set of choices from which the user must choose only one

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Code or program output

See Also


Network Load Balancing Clusters
Managing Network Load Balancing from the command line
Command-line reference A-Z
Command shell overview