Components of the Network Load Balancing Architecture

Search for	Example	Results
A single word	`cat`	Topics that contain the word "cat". You will also find its grammatical variations, such as "cats".
A phrase. You can specify that the search results contain a specific phrase.	`"cat food"` (quotation marks)	Topics that contain the literal phrase "cat food" and all its grammatical variations. Without the quotation marks, the query is equivalent to specifying an OR operator, which finds topics with one of the individual words instead of the phrase.

Search for	Operator	Example
Two or more words in the same topic	`AND` `and` `+` (plus symbol) `&` (ampersand)	`cat AND dog` `"cat food"+milk` `"cat food"&"dog food"`
Either word in a topic	`OR` `or` `\|` (pipe)	`cat OR dog` `cat \| dog`
Topics that do not contain a specific word or phrase	`NOT` `not` `!` (exclamation point)	`NOT cat` `! dog`
Topics that contain one string and do not contain another	`^` (caret)	`cat ^ mouse`
A combination of search types	`( )` parentheses	`cat + (dog \| mouse)` `cat \| dog + (! mouse)`

Component	Description
Nlb.exe	The Network Load Balancing control program. You use Nlb.exe from the command line to start, stop, and administer Network Load Balancing, as well as to enable and disable ports and to query cluster status.
Nlbmgr.exe	The Network Load Balancing Manager control program. Use this command to start Network Load Balancing Manager.
Wlbs.exe	The former Network Load Balancing control program. This has been replaced by Nlb.exe. However, you can still use Wlbs.exe rather than Nlb.exe if necessary, for example, if you have existing scripts that reference Wlbs.exe.
Wlbsprov.dll	The Network Load Balancing WMI provider.
Nlbmprov.dll	The Network Load Balancing Manager WMI provider.
Wlbsctrl.dll	The Network Load Balancing API DLL.
Wlbs.sys	The Network Load Balancing device driver. Wlbs.sys is loaded onto each host in the cluster and includes the statistical mapping algorithm that the cluster hosts collectively use to determine which host handles each incoming request.

Component

Description

Nlb.exe

The Network Load Balancing control program. You use Nlb.exe from the command line to start, stop, and administer Network Load Balancing, as well as to enable and disable ports and to query cluster status.

Nlbmgr.exe

The Network Load Balancing Manager control program. Use this command to start Network Load Balancing Manager.

Wlbs.exe

The former Network Load Balancing control program. This has been replaced by Nlb.exe. However, you can still use Wlbs.exe rather than Nlb.exe if necessary, for example, if you have existing scripts that reference Wlbs.exe.

Wlbsprov.dll

The Network Load Balancing WMI provider.

Nlbmprov.dll

The Network Load Balancing Manager WMI provider.

Wlbsctrl.dll

The Network Load Balancing API DLL.

Wlbs.sys

The Network Load Balancing device driver. Wlbs.sys is loaded onto each host in the cluster and includes the statistical mapping algorithm that the cluster hosts collectively use to determine which host handles each incoming request.