How to connect two Openfire Server???

I just want to ask, how can I possibly connect my Openfire Server v. 3.8.2 to my other Openfire Server 3.7.0???

Could you please provide me a detailed configuration or settings?

Here are the details of my setup:

a.) both server are using a Public IP Address

b.) both servers are already defined on our DNS Server

c.) No firewall are configured to both

Your immediate assistance is very much appreciated.

Thanks in advance.

jabongskie