An Elastic Network Interface (ENI) is a virtual network interface that can be attached to a VPC-type ECS instance. You can use ENIs to deploy high-availability clusters and perform low-cost failovers and fine-grained network management. This topic describes how to add the primary and secondary private IP addresses of ENIs to backend servers when you add backend servers to a guaranteed-performance Server Load Balancer (SLB) instance.
For more information about how to attach an EIP to an ECS instance, see Bind an ENI.
- Log on to the Server Load Balancer console.
- In the left-side navigation pane, choose .
- On the Instances page, click the ID of the SLB instance for which you want to create a backend server group.
- Click the VServer Groups, Default Server Group, or Primary/Secondary Server Groups tab.Note You can add the primary and secondary private IP addresses of ENIs to default server groups, VServer groups, and primary/secondary server groups. A VServer group is created in the example.
- On the VServer Groups tab, click Create VServer Group.
- On the Create VServer Group page, click Add.
- In the My Servers panel, turn on Advanced Mode and select Elastic Compute Service (ECS)/Elastic Network Interface (ENI) from the Select Backend Server Type drop-down list.
- Select the ECS instances that you want to add to the server group and click Next to configure the ports and weights for the instances.
- Click Add.
If the default server group is added for a listener, you can view the backend server group that is added with ENIs and secondary private IP addresses on the Instances page.
- indicates an ECS instance.
- indicates an ENI and its secondary private IP address.