NetScaler is used in Siebel to provide the requests to be transferred from CLIENT browser to the server using the load balancing features that are PROVIDED by the Siebel servers. The servers in this case don’t require any configuration CHANGES and it can be deployed EASILY without any delay. The server in the load balancing is directly communicating with the application server. 

• The load balancing on the server can be done only after installing the database server. This server allows the instances to be used in round-robin fashion. That allows the configuration file to be only handled by the Server manager by generating the “generate lbconfig” command. 
• The other way to do the load balancing is to get the request from the client browser and balance the load using different servers that are interconnected with each other. Netscalar in this case request the server to TRANSFER the load to handle it in a more convenient manner.

NetScaler is used in Siebel to provide the requests to be transferred from client browser to the server using the load balancing features that are provided by the Siebel servers. The servers in this case don’t require any configuration changes and it can be deployed easily without any delay. The server in the load balancing is directly communicating with the application server.