How to configure HA active/active ?

OK. The 2 LB are on the same sub-network. I want WEB A to point to VS A on LB A, and WEB B to point to VS B on LB B.

 

If one fails, all WEB will go to VS A + B on the active LB.

 

 

I configure both Virtual Server on LB A and sync. But how WEB A will know to go to LB A or B ? Since both LB has the 2 VS...

 

 

 

Also, I configured the fail over network, they are both showing Active. When I unplugged one of them, the other show : common.status.ACTIVE (1 and 2).

 

It's not telling me that the other unit is off, neither in the logs, just tells me "Unit 1 and 2"

 

 

What should I do ?