Assigning an EIP and Binding It to an ECS
Scenarios
You can assign an EIP and bind it to an ECS so that the ECS can access the Internet.
Notes and Constraints
- Each EIP can only be bound to one cloud resource and they must be in the same region.
- An EIP and its bound cloud resource can use different billing modes.
For example, a yearly/monthly EIP can be bound to a pay-per-use ECS.
- If an EIP is frozen due to account arrears or security reasons, it cannot be bound or unbound.
Assigning an EIP
- Log in to the management console.
- Click in the upper left corner and select the desired region and project.
- Click in the upper left corner and choose Networking > Elastic IP.
- On the displayed page, click Buy EIP.
- Set the parameters as prompted.
Table 1 Parameter descriptions Parameter
Description
Example Value
Billing Mode
The following billing modes are available:
- Yearly/Monthly
- Pay-per-use
Pay-per-use
Region
Regions are geographic areas that are physically isolated from each other. The networks inside different regions are not connected to each other, so resources cannot be shared across different regions. 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 is Beijing.
CN-Hong Kong
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 Chinese mainland and Hong Kong (China). (This parameter is available only in CN-Hong Kong.)
For details, see What Are the Differences Between Static BGP and Dynamic BGP?
Dynamic BGP
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
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 name of the default project is default.
For details about creating and managing enterprise projects, see the Enterprise Management User Guide.
default
Advanced Settings
Click the drop-down arrow to configure parameters, including the bandwidth name and tag.
-
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.
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
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.
-
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
Quantity
The number of EIPs you want to purchase.
The quantity must be specified if the 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 (-).
3005eip
- 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.
- After an EIP is added to a shared bandwidth, the EIP will use the shared bandwidth.
- After an EIP is removed from the shared bandwidth, the EIP will use the dedicated bandwidth.
- Click Next.
- Click Submit.
Binding an EIP
- On the EIPs page, locate the row that contains the target EIP, and click Bind.
- Select the instance that you want to bind the EIP to.
Instances that can be bound with EIPs include ECSs, BMSs, virtual IP addresses, and supplementary network interfaces.
- Click OK.
An EIP and its bound cloud resource can use different billing modes.
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