1 Server connects to the other server?

Hello Guys,
So basically I'm trying to get 1 server connect to my other server.

I'm trying to do what pitforge is doing in the 2 pictures below.
Look:
http://gyazo.com/a038360f153d9919f5e611fc65982128 <--- Server 1

http://gyazo.com/3506e9d8e123bdaa2a471952d9d94e4d <--- Server 2

But, you CANNOT post 2 servers that lead to the ip just from changing it in cloudfare.....

So, how do they do it?

For example, if I have mc.impactedpvp.net , and mc1.impactedpvp.net on PMC. It'll remove 1 of the posts right away.

So If I have a PMC post on mc.impactedpvp.net, and then make another mc1.impactedpvp.net <-- It'll remove "mc.impactedpvp.net" and keep the mc1.impactedpvp.net

 

This is not a bukkit question post on the PMC forum.

 

Well my main question is if I can connect 1 server ip to the other..

 

Anyone