Good Day every one! 

We have a situation and we are looking for a solution (the
client is specific to implement this way):

We are using FreeBSD FW cluster (2 units) for our DMZ zone.
We are using CARP for VIP and round robin load balance. The
result is not always balance, most of the times it is 80/20.
We are looking at the following solution:
Implement a solution that provides LB based on the
following factors:

1.    CPU
2.    Memory
3.    Ethernet traffic utilization

Theoretically I can think when a packet comes to FW1, if it is busy (say CPU is 
80%) then we need to implement a solution to send the packet to FW2 and vice 
I heard that some tools exist to complement CARP for this purpose, but could 
not find at Google. 

I would highly appreciate any suggestions on this (or alternate solutions – we 
know we can use LB appliances, but we will have to many of them for several 
other servers too). 

I would appreciate your help or any alternate suggestions on how we can achieve 
this solution (apart from CARP). 

Have lots of fun,


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