Features of Elastic IP
- It is static, indicating it does not change over time.
- It is region-specific, which means it can be used only in the region in which it is present and cannot be moved to another region.
- An elastic IP address originates from either a custom IPv4 address pool that you have added to your AWS account or from the pool of IPv4 addresses offered by Amazon.
- To use an elastic IP, one has to first allocate it to the account, then proceed and associate it with the instance or the network interface.
- If you disassociate Elastic IP from any resources, it will remain present in the account until you explicitly release it.
- If you associate Elastic IP with the instance, it also gets associated with the instance’s primary network interface.
- If you associate an elastic IP address with a network interface that is attached to an instance, it also gets associated with the instance.
- If an Elastic IP address is associated with an instance or its primary network interface, the instance’s public IPv4 address (if it was there initially) will get released back into Amazon’s pool of public IPv4 addresses. One cannot regain the public IPv4 address, and one cannot convert a public IPv4 address to an elastic IP address.
How To Associate Elastic IP Addresses With Resources In Your VPC ?
It is a public IPv4 address that may be accessed over the internet. One can assign an elastic IP address to the instance to facilitate internet connectivity if it doesn’t have a public IPv4 address.
In other words, a static IPv4 address intended for dynamic cloud computing is called an elastic IP address. The AWS account is assigned an elastic IP address, which is owned by the account until one releases it. One can quickly remap an Elastic IP address to another instance in the account to hide the failure of the software or instance.