Assigning an EIP

Scenarios

You can assign an EIP and bind it to cloud resources to allow them to access the Internet. This section describes how to assign a new or specific EIP.

• By default, new EIPs are assigned at random.
  • If you assign a new EIP within 24 hours after releasing an EIP, the released EIP will be assigned first.
  • Other users can call APIs to assign the released EIP 24 hours after it is released.
• You can call APIs to assign a specific EIP.

Assigning a New EIP

1. Log in to the management console.
2. Click in the upper left corner and choose Network > Elastic IP.
3. On the displayed page, click Assign EIP.
4. Configure parameters as prompted.

   Table 1 Parameter descriptions

   Parameter	Description	Example Value
   Region	The desired region. Resources in different regions cannot communicate with each other over internal networks. For low network latency and quick resource access, select the region nearest to where your services will be accessed. The region selected for the EIP is its geographical location.	-
   EIP Type	Dynamic BGP: Dynamic BGP provides automatic failover and chooses the optimal path when a network connection fails. The selected EIP type cannot be changed after the EIP is assigned.	Dynamic BGP
   Billed By	The following options are available: 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 outbound traffic you use. This is suitable for scenarios with light or sharply fluctuating traffic. Shared Bandwidth: A shared bandwidth can be shared by multiple EIPs. It controls the data transfer rate on these EIPs in a centralized manner. This is suitable for scenarios with staggered traffic.	Bandwidth
   Bandwidth	The bandwidth size in Mbit/s.	100
   EIP Name	The EIP name.	eip-test
   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.	default
   Advanced Settings	Click the drop-down arrow to configure parameters, including the bandwidth name.	-
   Bandwidth Name	The name of the bandwidth.	bandwidth
   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.	Key: Ipv4_key1 Value: 3005eip
   Quantity	The number of EIPs to be assigned.	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

5. Click Create Now.
6. Click Submit.

Assigning a Specific EIP

If you want to retrieve an EIP that you have released within seven days (inclusive) 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.

• If the EIP has been assigned to another user, you will fail to assign your required EIP.
• The management console does not support assigning a specific EIP.