J2EE and EP on cluster environment

Hi,

We have Portal (EP6 SP15) installed and we are planning to cluster the j2ee engine on our current environment.

Current Environment:

1. Central and Database instance on one box.

2. Dialog Instance on one box

3. We are using Hardware load balancer.

What are the steps we need to follow for clustering j2ee and then portal? Can any one brief me the process, as I am facing the problem understanding the help document for clustering the j2ee engine?

In configuring cluster Element it says to specify the name of the cluster element and specify the port on which the server process listens for connection ( element.name and element.jointPort). Should the values be same on all the dispatchers and servers?

Thanks,

Sandeep