How to two web servers to cognos 7 server

[aslam123]

My setup is :
Machine A (Web server) - IIS Server, Upfront Gateway, IWR Gateway, Power Play Gateway
Machine B (Web server) - IIS Server, Upfront Gateway, IWR Gateway, Power Play Gateway
Machine C (without Web server) - Cognos 7 server for IWR,PowerPlay, Upfront.

I have configure Machine A and C to work. Its working fine.
My question is, what and where to change in Machine C configuration of Cognos 7, so that it takes request from Webserver A and B both.

Please help me to resolve this.
Thanks
Aslam

 

[Draoued]

See

http://support.cognos.com/supported/docs/en/powerplay/7.0/inst_pln.pdf

Pages 53-55

Here is an extract of this document :
If one Web server cannot provide the level of service you require, you can use multiple Web
servers to manage your Web requests. You can either
• manage the load yourself by installing the gateways on multiple Web servers and directing
users to a specific Web site
Some additional configuration work is required to create and manage the Web servers and
multiple server groups. You must also monitor traffic. If the split between the Web sites
becomes unbalanced, or if one Web site becomes unavailable, you may need to make
changes.
• use router technology to balance the processing load across the Web servers (IP spraying)
Direct all users to the same Web site. The router determines which Web site to direct the
request to. The management of the server group is simple because the gateway entry is
mapped to the router. All load balancing is done by the router.