A. Implement the SAP cluster solution by using a secondary private IP address. Reassign the secondary private IP address from one network interface to another network interface in the event of any failure that affects the primary instance.
B. Implement the SAP cluster solution by using an Elastic IP address. Mask the failure of an instance or software by rapidly remapping the address to another instance in the account.
C. Implement the SAP cluster solution by using a public IP address. Use this public IP address for communication between the instances and the internet.
D. Implement the SAP cluster solution by using an overlay IP address that is outside the CIDR block of the VPC. Use overlay IP address routing to dynamically update the route table to point to the active node and provide external access by using a Network Load Balancer or AWS Transit Gateway.