If you do not select a public IP address when you subscribe to an ECS and subsequently the ECS needs to access the Internet due to the change of business requirements, you can subscribe to an EIP separately and bind it to the ECS.

Precondition

The cloud resource should not be bound to other EIPs;
The bound EIP should not be bound to other cloud resources.

Operating Instructions

Binding an EIP does not require powering off the virtual machine and the EIP takes effect in real time after it is bound successfully.

Operation Steps

Enter the Console and click EIP in the service list.
Find the EIP to bind from the EIP list and click Bind in the operation column.
In the window that is displayed, if you need to bind an ECS, select One-to-One Mapping . If you need to bind an ELB, select ELB ; then click OK .
In the resource list displayed in the pop-up window, select the ECS or ELB to bind and click OK .
After an EIP is bound to the ECS or ELB, the EIP will show Boundstatus in the list on the Console.

Note: If the billing modes and expiration dates of EIPs bound later differ from those of cloud resources, the overall business may be affected after one resource expires earlier. You need to pay special attention to the expiration dates of resources that are purchased by annual or monthly package and renew the resources before expiration. Pay attention to the account balance of resources that are charged as per use and top up in time before the balance is exhausted.

Elastic IP

Bind an EIP