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Network Load Balancing or NLB is a feature of Windows 2000 as well as Windows Server 2003 that can be used when you require supplying increased levels of accessibility for TCP/IP application. Each and every version of Windows 2003 Server has NLB. NLB is by default installed, but by default is not enabled.

Network Load Balancing is characteristically used to supply high accessibility for Internet application. This is because of NLB being a tremendous technology that works very well in case of traffic based application. A Network Load Balancing cluster is able to host up to thirty two servers.

The NLB servers make use of a statistical mapping which determines host precedence for an inward packet, to recognize the NLB server what should knob the call. Just the once the NLB server is recognized, the rest of the servers in the Network Load Balancing cluster castoffs the packet. One can configure an IP address for network traffic which should be trafficked to an identical cluster server. Every server in the Network Load Balancing cluster uses and transmits heartbeat signals to recognize the state. The heartbeat signals holds data.
Protocol parameters are used to identify protocols should be hold in the specific port range. Signals for the protocol identified in the protocol parameters which are hold by the port rul. Then all other signals are managed by the default filtering method determined in the Host precedence setting.

A big benefit of clustering is it does not need very higher technical efficiency to apply. One with a fundamental level of knowledge will be capable of setting it up. These Clustering applications typically come as element of a server activity package and due to this, they are significantly less expensive. Most clustering applications as well use different hardware for cluster controlling.