An Elastic IP (ElP) is a regional static IP designed for dynamic cloud computing. With EIP, you can quickly map an address to another instance (or NAT gateway instance) in your account for failure isolation.
The lifecycle of a public IP is bound with a CVM, which means that the public IP is released when the associated CVM is terminated. However, the lifecycle of an EIP is independent of the CVM. An EIP is always available under your account unless you release it. If you want to retain a public IP after the termination of the associated CVM, convert it to an EIP.
Both public IPs and EIPs are used of internet access.
For more details about EIPs, see IP Addresses.Note：
Only general BGP IP lines are applicable for the current common public IP addresses.
|Public network access||✓||✓|
EIPs can be decoupled from the lifecycle of the cloud resource and operate independently. For example, if you need to keep a certain public IP that is strongly associated with your business, you can change it to an EIP and keep it in your account.
|Daily purchase (times)||Regional EIP quota * 2|
|Public IPs assigned due to disassociation of EIPs/day||10|
- If you do need to adjust the quota, submit a ticket or contact your sales rep.
For CVM instances purchased before 00:00, September 18, 2019, the number of public IPs can be bound to each instance is equal to the number of supported private IPs.
|CPU cores||Public IPs + EIPs|