What Is an Elastic Network Interface?
Elastic Network Interface (ENI) is an elastic network interface bound to CVMs in a VPC, which can be freely migrated among multiple CVMs. ENI is very helpful in configuring and managing networks and building highly reliable network solutions.
An ENI combines VPC, availability zone, and subnet attributes and can only be bound to CVMs in the same availability zone. A CVM can bind multiple ENIs, and the specific number of bindings will depend on the host specifications.
What are the Restrictions on Using ENIs in CVM?
See the Elastic Network Interface Related Limits section in the Overview of Usage Limits.
What is the Basic Information of ENI?
See the Related Concepts section of Introduction to ENI.
How to Create an ENI?
See Creating an ENI.
How to view an ENI?
See Viewing an ENI.
How to Bind an ENI to a CVM Instance?
See Binding and Configuring CVM.
How to Configure an ENI in a CVM Instance?
See Binding and Configuring CVM.
How to Modify or Customize the Private IP Address of an ENI?
The CVM in a VPC supports modification and customization of the ENI's private IP. The console directions are as follows:
- Log in to the VPC console.
- In the left sidebar, Click IP and Network Interface > ENI to open the Elastic Network Interface list page.
- Click the ID/Name of the ENI to go to the ENI details page and check the ENI information.
- Select the IPv4 Address Management tab and click Assign Private IP.
- In the pop-up window, select the IP allocation method as Manually Fill in , and enter the IP address you want to modify.
- Click Confirm to complete the operation.
After modifying the console, you also need to modify the network interface configuration file synchronously. See Binding and Configuring CVM.