Public,Private and Elastic IP addresses

• Public IP Address:

  • Lost when the instance is stopped.
  • Used in public subnets.
  • No Charge
  • Associated with private IP address on the instance.
  • Cannot be moved between instances.

• Private IP Address:

  • Retained when the instance is stopped.
  • Used in public and private subnets.

• Elastic IP Address:

  • Static Public IP Address.
  • You are charged if not used.
  • Associated with a private IP address on the instance.
  • Note: Elastic Fabric Adapter is a network device that you can attach to reduce latency and increase throughput for distributed HPC(High Performance Computing)