Edge server act as core server !

Hi,

I have one core and two edge fms servers. Problem here is,

Figure 1 :

Core FMS server    < -------  Edge server 1     < -------- Edge server 2

Figure 2:

Core FMS server  <-------  Edge server 1

Core FMS server < ------- Edge server 2

I need the setup should be work only as Figure 2. But , Figure 1 setup also working. I mean, Edge server1 configured as edge fms for Core fms. and Edge server2 configured as edge server for Edge server2. How is this possible ?. Somewhere I need to enable the block list.

Please someone help on this.