Elastic IP Address:Quick start for EIP

Configuration flow

Step 1: Request an EIP

An EIP is a standalone public IP address that you can purchase. Before you can use an EIP, you must request an EIP.

1. Log on to the Elastic IP Address console .

2. On the Elastic IP Addresses page, click Create EIP.

3. On the purchase page, configure the EIP, and then click Buy Now and complete the payment.

   Configuration	Description
   Billing Method	Select a billing method for the EIP. In this topic, Pay-As-You-Go is selected.
   Region	Select the region for the EIP. Make sure that the EIP is in the same region as the ECS instance that you want to associate it with.
   Line Type	Select a line type for the EIP. In this topic, BGP (Multi-ISP) is selected.
   Network Type	Select a network type for the EIP. Currently, only the Internet network type is supported.
   Security Protection	Select a security protection level. In this topic, Default is selected.
   Address Pool	Select an IP address pool. If you do not select a specific address pool, an EIP is allocated to you from the public IP address pool of Alibaba Cloud by default.
   Traffic	Select a metering method for the EIP traffic. In this topic, Pay-by-bandwidth is selected.
   Peak Bandwidth	Select a peak bandwidth for the EIP. In this topic, this parameter is set to 1 Mbps.
   Name	Enter a name for the EIP.
   Resource Group	Select the resource group to which the EIP belongs.
   Billing Cycle	Select a billing cycle for the EIP. Currently, EIP that use the pay-by-bandwidth billing method support only the Daily billing cycle.
   Quantity	Select the number of EIP to purchase.

Step 2: Associate the EIP with an ECS instance

Associate the EIP with an ECS instance in a virtual private cloud (VPC). After the ECS instance is associated with the EIP, the ECS instance can communicate with the Internet.

1. Log on to the Elastic IP Address console .

2. In the top navigation bar, select the region where the EIP is located.

3. On the Elastic IP Addresses page, find the target EIP and click Associate with Resource in the Actions column.

4. In the Associate EIP with Resource dialog box, set the following parameters and click OK.

   Configuration	Description
   Instance Type	Select ECS Instance.
   Select an instance to associate	Select the ECS instance that you want to associate. The ECS instance to be associated must meet the following conditions: The ECS instance is deployed in a VPC. The ECS instance is in the Running or Stopped state. The ECS instance is in the same region as the EIP to be associated. The ECS instance is not assigned a static public IP address and is not associated with an EIP. Note Each ECS instance can be associated with only one EIP. To associate multiple EIPs with an ECS instance, associate a secondary elastic network interface (ENI) with the ECS instance and associate EIPs with the secondary ENI. For more information, see Associate an EIP with an ECS instance.

Step 3: Test the connection

After you associate the EIP with the ECS instance, verify that the ECS instance can connect to the Internet.

1. Log on to the ECS instance that is associated with the EIP.

   For more information about how to log on to an ECS instance, see Overview of connection methods.

2. Run the following command to verify the Internet connection.

   ping <public domain name>

   The test result shows that the ECS instance can communicate with the Internet.

References

• Release a pay-as-you-go EIP

• AllocateEipAddress: Requests an EIP instance.

• AssociateEipAddress: Associates an EIP instance with a cloud resource in the same region.

• ReleaseEipAddress: Releases a specified EIP instance.