Amazon AWS
There are some amazon instances that can be launched only in an EC2-VPC. If you want to attach one of your new EC2-VPC instances to an elastic IP that has already been attached to an EC2-classic instance, you will have to move the Elastic IP from EC2-Classic to EC2-VPC.
Instance Types Available Only in a VPC
There are some instances that are only available in a VPC
- C4
- M4
- T2
Elastic IPs are different for EC2-Classic and EC2-VPC
You can’t associate directly an Elastic IP address that you allocated for use with a VPC with an instance in EC2-Classic, and vice-versa.
Moving elastic IPs from EC2-Classic to EC2-VPC
- Only in the same region
- You can’t migrate an Elastic IP initially reserved for EC2-VPC
- The Elastic IP must be detached from any instance
- This migration has to be carried out from the CLI
move-address-to-vpc command
aws ec2 move-address-to-vpc --public-ip 54.123.4.56
Output:
{
"Status": "MoveInProgress"
}