Round Robin load balancing method only selects 2 nodes at once.

All,

 

I have a load balancer pool with 3 nodes in it (a, b, c) set at ratio 1 and priority group 2.

 

The load balancing method is round robin, however sometimes it’s only a & b processing data, sometimes b & c, and sometimes a & c. This means that all machines are in fact capable of receiving data; but The problem is we can never get all 3 machines processing data simultaneously - a &b & c

 

 

What other configuration may be affecting the actual 'balancing'? or am I just misunderstanding Round Robin?

 

 

Thanks in advance for the help.

 

 

-jp