Director can’t work with more than one Controller without a router between them. why do we need two controllers? Because of redundancy. Also, Director does not support dynamic routing. We can only write a static route on Director. When we add two static routes towards the controller for overlay network such as 10.0.0.0/8 and because the health of the route is not checked, sometimes some requests hang. We use the service vnf router for Director to communicate with each contro