The Control Center performs a rules check before the farm is submitted for activation. If errors exist in your design, you are prompted to correct the errors.
The following rules are checked:
Every element must be configured according to the element's rules
Every hardware element must have the required wiring connections
A valid hardware device is configured for each element.
No element configuration can contain a reference to deleted elements
Every server must have a boot disk
No circular loops can exist in the default gateway configuration
The number of externally visible IP addresses that is needed cannot exceed the requested maximum
The Control Center does not validate that your resources are within any limits set by your contract or available within the I-Fabric at that point in time.
Every VIP must be connected or a warning appears
Every server receiving traffic from a load balancer must have an interface on the data VLAN or a warning appears