Assigning an EIP

1. Go to the Buy EIP page.
2. Set the parameters as prompted.
   Figure 1 Assigning an EIP
   

   Table 1 Parameter descriptions

   Item	Parameter	Description	Example Value
   Basic Configuration	Billing Mode	You can select: Yearly/Monthly Pay-per-use	Pay-per-use
   Basic Configuration	Region	The desired region. Resources in different regions cannot communicate with each other over internal networks. For lower network latency and faster access to your resources, select the region nearest you. The region selected for the EIP is its geographical location. NOTE: The geographical location of an EIP purchased in CN North-Ulanqab1 or CN East-Qingdao is Beijing. The geographical location of an EIP purchased in CN East2 is Shanghai.	CN-Hong Kong
   Bandwidth Details	EIP Type	Dynamic BGP: Dynamic BGP provides automatic failover and chooses the optimal path when a network connection fails. Static BGP: Static BGP offers more routing control and protects against route flapping, but an optimal path cannot be selected in real time when a network connection fails. Premium BGP: Premium BGP chooses the optimal path and ensures low-latency and high-quality networks. BGP is used to interconnect with lines of multiple mainstream carriers. Public network connections that feature low latency and high quality are directly established between the Chinese mainland and Hong Kong (China). (Premium BGP is available only in CN-Hong Kong.) EIP Pool: This parameter is available only when you set Billing Mode to Pay-per-use. An EIP pool helps you manage a large number of EIPs and assigns EIPs with dynamic BGP routing, ensuring network stability and optimal user experience. For details about the EIP pool, see EIP Pool Overview. For details, see What Are the Differences Between Static BGP and Dynamic BGP?	Dynamic BGP
   Bandwidth Details	EIP Pool	Select your purchased EIP pool. This parameter is available only when Billing Mode is set to Pay-per-use and EIP Type set to EIP Pool.	eipPool-test
   Bandwidth Details	Billed By	This parameter is available only when you set Billing Mode to Pay-per-use. Bandwidth: You specify a maximum bandwidth and pay for the amount of time you use the bandwidth. This is suitable for scenarios with heavy or stable traffic. Traffic: You specify a maximum bandwidth and pay for the total traffic you use. This is suitable for scenarios with light or sharply fluctuating traffic. Shared Bandwidth: The bandwidth can be shared by multiple EIPs. This is suitable for scenarios with staggered traffic.	Bandwidth
   Bandwidth Details	Bandwidth (Mbit/s)	The bandwidth size in Mbit/s.	100
   Bandwidth Details	Bandwidth Name	The name of the bandwidth.	bandwidth
   DDoS Protection	DDoS Protection	Cloud Native Anti-DDoS Basic Cloud Native Anti-DDoS Basic provides up to 5 Gbit/s of DDoS mitigation capacity. If the attack to an EIP exceeds 5 Gbit/s, the EIP will be blocked.	-
   EIP Details	EIP Name (Optional)	The EIP name.	eip-test
   EIP Details	Enterprise Project	The enterprise project that the EIP belongs to. An enterprise project facilitates project-level management and grouping of cloud resources and users. The default project is default. For details about creating and managing enterprise projects, see the Enterprise Management User Guide.	default
   EIP Details	Tag	The EIP tags. Each tag contains a key and value pair. The tag key and value must meet the requirements listed in Table 2. NOTE: If your organization has created a tag policy for EIP, you need to add tags for EIP based on the tag policy. If a tag does not comply with the tagging rules, the creation may fail. Contact the organization administrator to learn details about the tag policy.	Key: Ipv4_key1 Value: 3005eip
   Monitoring	Monitoring	Used to monitor the EIP and enabled by default. You can use the management console or APIs provided by Cloud Eye to query the metrics and alarms generated for the EIP and bandwidth.	-
   Purchase Details	Required Duration	The duration for which the purchased EIP will use. The duration must be specified if the Billing Mode is set to Yearly/Monthly.	1 month
   Purchase Details	Auto-renew	Whether to select Auto-renew. You can select it if the Billing Mode is set to Yearly/Monthly. The auto-renewal period is determined by the required duration. Monthly subscription: The subscription is renewed every month. Yearly subscription: The subscription is renewed each year.	-
   Purchase Details	Quantity	The number of EIPs you want to assign. You can set the number of EIPs to be assigned only when Billing Mode is set to Pay-per-use.	1

   Table 2 EIP tag requirements

   Parameter	Requirement	Example Value
   Key	Cannot be left blank. Must be unique for each EIP. Can contain a maximum of 36 characters. Can contain letters, digits, underscores (_), and hyphens (-).	Ipv4_key1
   Value	Can contain a maximum of 43 characters. Can contain letters, digits, underscores (_), periods (.), and hyphens (-).	eip-01

   

   • If you are buying an EIP billed on a pay-per-use basis and you want to use a shared bandwidth, you can only select an existing shared bandwidth from the Bandwidth Name drop-down list. If there are no shared bandwidths to select, purchase a shared bandwidth first.
   • A dedicated bandwidth cannot be changed to a shared bandwidth and vice versa. However, you can purchase a shared bandwidth for pay-per-use EIPs.
     • Add an EIP to a shared bandwidth and then the EIP will use the shared bandwidth.
     • Remove the EIP from the shared bandwidth and then the EIP will use the dedicated bandwidth.
3. Click Next.
4. Click Submit.

If you click Buy Shared Bandwidth when you buy an EIP, you also need to purchase the bandwidth.

If you want to retrieve an EIP that you have released within seven days (including seven days) or assign a specific EIP, you can use APIs.

You can set the value of ip_address to the one that you want to assign. For details, see Elastic IP API Reference.

• If the EIP has been assigned to another user, you will fail to assign your required EIP.
• You cannot use APIs to assign a yearly/monthly EIP that you have released or assign a specific yearly/monthly EIP.
• The management console does not support assigning a specific EIP.

1. Log in to the management console.
2. Use either of the following methods to find an EIP:
   • Method 1:
     1. In the upper left corner of the console, select the region to which the EIP to be queried belongs.
     2. Under Networking, click Elastic IP.
     3. In the EIP list, view your EIPs.
   • Method 2:
     1. In the upper right corner of the console, choose Resources > My Resources.
     2. On the My Resources page, set search criteria to quickly find the target EIP.
        • Service: Virtual Private Cloud (VPC)
        • Resource Type: EIPs
        • Region: Retain the default value All or select the region to which the EIP to be queried belongs.

          For example, if you select All for Region, all of your EIPs will be displayed.

     3. In the EIP list, view your EIPs.