Apply for an EIP - Elastic IP Address - Alibaba Cloud Documentation Center

Elastic IP Address (EIP) is a type of public IP address that you can purchase and hold as an independent resource. After EIPs are associated with cloud resources, the cloud resources can use the EIPs to communicate with the Internet. This topic describes how to apply for a new EIP, recover a released EIP, and apply for a contiguous EIP group.

Go to the section that you are interested in:

Apply for a new EIP
Recover a released EIP
Apply for a contiguous EIP group

Apply for a new EIP

Log on to the Elastic IP Address console .
On the Elastic IP Addresses page, click Create EIP.

On the EIP buy page, set the following parameters, click Buy Now, and then complete the payment.

Parameter	Description
Billing Method	Select a billing method for the EIP. EIPs support the subscription and pay-as-you-go billing methods. Subscription: You are charged a subscription fee based on the maximum bandwidth value specified for the EIP. For more information, see Subscription. Pay-as-you-go: You are charged for the resources that you use. The pay-by-data-transfer and pay-by-bandwidth metering methods are supported. For more information, see Pay-as-you-go.
Subscription
Region	Select the region where you want to create the EIP. Make sure that the EIP and the resource to be associated with the EIP are in the same region. EIPs can be associated with Elastic Compute Service (ECS) instances in virtual private clouds (VPCs), NAT gateways, Classic Load Balancer (CLB) instances, High-availability virtual IP addresses (HAVIPs), and secondary elastic network interfaces (ENIs).
Line Type	Select a line type for the EIP. BGP (Multi-ISP): provides premium BGP lines across the world. BGP lines from different ISPs are used at the same time and the optimal BGP line is automatically selected to ensure network stability. Supported ISPs are China Telecom, China Unicom, China Mobile, China Mobile Tietong, China Netcom, CERNET, NRTA, Dr. Peng Group, and Founder Broadband. BGP (Multi-ISP) Pro: BGP (Multi-ISP) Pro improves the efficiency of data transmission from regions outside the Chinese mainland to the Chinese mainland. Compared with BGP (Multi-ISP), BGP (Multi-ISP) Pro establishes cross-border connections by using Chinese mainland ISP services to provide services to users in the Chinese mainland, excluding data centers. This reduces network latency. Note EIP BGP (Multi-ISP) Pro is supported only in the China (Hong Kong) region.
Network Type	Select a network type for the EIP. You can select only Public.
Bandwidth	Select a maximum bandwidth value for the EIP. Unit: Mbit/s.
Name	Enter a name for the EIP.
Resource Group	Select a resource group for the EIP.
Quantity	Select the number of EIPs that you want to purchase.
Duration	Select a subscription duration for the EIP based on your business requirements, and select whether you want to enable auto-renewal.
Pay-as-you-go
Region	Select the region where you want to create the EIP. Make sure that the EIP and the resource to be associated with the EIP are in the same region. EIPs can be associated with ECS instances in VPCs, NAT gateways, Server Load Balancer (SLB) instances, HAVIPs, and secondary ENIs.
Line Type	Select a line type for the EIP. BGP (Multi-ISP): provides premium BGP lines across the world. BGP lines from different ISPs are used at the same time and the optimal BGP line is automatically selected to ensure network stability. Supported ISPs are China Telecom, China Unicom, China Mobile, China Mobile Tietong, China Netcom, CERNET, NRTA, Dr. Peng Group, and Founder Broadband. BGP (Multi-ISP) Pro: BGP (Multi-ISP) Pro improves the efficiency of data transmission from regions outside the Chinese mainland to the Chinese mainland. Compared with BGP (Multi-ISP), BGP (Multi-ISP) Pro establishes cross-border connections by using Chinese mainland ISP services to provide services to users in the Chinese mainland, excluding data centers. This reduces network latency. Note EIP BGP (Multi-ISP) Pro is supported in the following regions: China (Hong Kong), Japan (Tokyo), Singapore, Malaysia (Kuala Lumpur), Philippines (Manila), Indonesia (Jakarta), and Thailand (Bangkok).
Network Mode	Select a network type for the EIP. You can select only Internet.
Security Protection	Select an edition of Anti-DDoS based on your business requirements. Default: specifies Anti-DDoS Origin Basic, which can mitigate DDoS attacks at 5 Gbit/s or lower. For more information, see What is Anti-DDoS Origin? Anti-DDoS (Enhanced): specifies Anti-DDoS Pro/Premium, which can mitigate DDoS attacks at the Tbit/s level. Important If you use Anti-DDoS Pro/Premium to protect your EIP, take note of the following items: The first time you use Anti-DDoS Pro/Premium for your EIP, click Anti-DDoS Origin (pay-as-you-go) to activate Anti-DDoS Pro/Premium on a pay-as-you-go basis. If you use Anti-DDoS Pro/Premium to protect your EIP, you are charged a protection fee, which is managed by Anti-DDoS. For more information, see Pay-as-you-go. Anti-DDoS Pro/Premium is supported only in some regions. For more information, see Anti-DDoS editions.
IP Address Pool	Select an IP address pool based on your business requirements. Default is selected by default. Alibaba Cloud assigns an EIP from the public IP address pool. You can also select an IP address pool from the drop-down list. Then, an EIP is allocated from the selected IP address pool. For more information, see Create and manage an IP address pool. To use the IP address pool feature, apply for the privilege in the Quota Center console. For more information, see Request a quota increase.
Data Transfer	Select a metering method for data transfer over the EIP. Pay-By-Bandwidth: You are charged based on the specified maximum bandwidth on a daily basis, regardless of the actual usage. Pay-By-Data-Transfer: You are charged based on the amount of data transfer over the Internet on an hourly basis.
Maximum Bandwidth	Enter a bandwidth value or adjust the slider to specify a bandwidth value based on your business requirements.
Name	Enter a name for the EIP.
Resource Group	Select a resource group for the EIP.
Billing Cycle	Select a billing cycle for the EIP. Pay-by-bandwidth EIPs support only the Day option. Pay-by-data-transfer EIPs support only the Hour option.
Quantity	Select the number of EIPs that you want to purchase.

Recover a released EIP

You can recover EIPs that are released within the last seven days by specifying the IP address or EIP ID.

If the EIP or ECS static IP address is already assigned to another Alibaba Cloud account, or is locked or recycled due to security reasons, the EIP cannot be recovered. You cannot recover the public IP addresses of ECS instances or CLB instances that are deployed in classic networks.

Log on to the Elastic IP Address console .
In the top navigation bar, select the region where the EIP is created.
On the Elastic IP Addresses page, click Apply for Specific EIP.

In the Apply for Specific EIP dialog box, set the following parameters and click OK.

Parameter	Description
Request Type	Select Apply for Specific EIP. You can specify the IP address or ID of the EIP. By default, a recovered EIP uses the pay-as-you-go billing method and the pay-by-data-transfer metering method. The maximum bandwidth of the EIP is 5 Mbit/s.
Request Method	Select a request method: Request by IP Address: Specify the IP address of the EIP or the static public IP address of the ECS instance. Request by EIP ID: Specify the ID of the EIP.
IP Address	If you set Request Method to Request by IP Address, enter the IP address of the EIP that you want to apply for.
EIP ID	If you set Request By to Request by EIP ID, enter the ID of the EIP that you want to apply for. Note You can recover only EIPs that were used by you.
IP Address Pool	Select an IP address pool from the drop-down list based on your business requirements. For more information, see Create and manage an IP address pool. To use the IP address pool feature, apply for the privilege in the Quota Center console. For more information, see Request a quota increase.

Apply for a contiguous EIP group.

You can apply for a contiguous EIP group to facilitate network management. A contiguous EIP group consists of multiple contiguous EIPs. Contiguous EIP groups are similar to standard EIPs which are allocated from Alibaba Cloud IP address pools. You can associate contiguous EIP groups with cloud resources in VPCs, such as ECS instances, internal-facing CLB instances, internal-facing Application Load Balancer (ALB) instances, secondary ENIs, NAT gateways, and HAVIPs. After you associate a contiguous EIP group with a cloud resource, the cloud resource can use the EIPs in the contiguous EIP group for network communication.

Before you apply for a contiguous EIP group, take note of the following rules:

You cannot release only one EIP in a contiguous EIP group. If you want to release an EIP in a contiguous EIP group, you must release all EIPs in the contiguous EIP group.

The following table describes the differences between contiguous EIP groups and standard EIPs.

Item	Contiguous EIP group	Standard EIP
Billing methods	Only the pay-as-you-go billing method is supported.	The subscription and pay-as-you-go billing methods are supported.
Switch between billing methods	You cannot switch the billing method from pay-as-you-go to subscription.	You can switch the billing method from pay-as-you-go to subscription.
Billable items	EIPs in contiguous EIP groups and standard EIPs support the same billable items. For more information, see Billable items.

Log on to the Elastic IP Address console .
In the top navigation bar, select the region where you want to apply for a contiguous EIP group.
On the Elastic IP Addresses page, click Apply for Specific EIP.

In the Apply for Specific EIP dialog box, set the following parameters for the contiguous EIP group and click OK.

Parameter	Description
Request Type	Select Request Contiguous EIP Group.
Mask for Contiguous EIP Group	Select a subnet mask length for the contiguous EIP group, and select I have read and understand that: N EIPs are allocated by default. One, three, or four EIPs may be reserved by the system. Valid values: 24 to 28. The number of contiguous EIPs varies based on the subnet mask length selected for the contiguous EIP group. /28: allocates 16 contiguous EIPs by default. /27: allocates 32 contiguous EIPs by default. /26: allocates 64 contiguous EIPs by default. /25: allocates 128 contiguous EIPs by default. /24: allocates 256 contiguous EIPs by default. Note In some scenarios, the actual number of EIPs that are allocated may be less than the expected number because one, three, or four EIPs may be reserved.
Network Type	Select a network type for the contiguous EIP group. You can select only Internet.
Metering Method	Select a metering method for the contiguous EIP group. Pay-By-Bandwidth: You are charged based on the specified maximum bandwidth on a daily basis, regardless of the actual usage. Pay-By-Data-Transfer: You are charged based on the amount of data transfer over the Internet on an hourly basis.
Bandwidth	Specify a bandwidth value for the contiguous EIP group. Valid values: 1 to 200. Unit: Mbit/s.

References

AllocateEipAddress: applies for an EIP.
AllocateEipAddressPro: applies for a specific EIP.
AllocateEipSegmentAddress: applies for a contiguous EIP group.