You can associate an Elastic IP Address (EIP) with a Server Load Balancer (SLB) instance of the VPC network. After you associate an EIP with an SLB instance, the SLB instance can forward requests from the Internet.

Background information

An EIP is a public IP address that can be purchased and owned independently. You can associate an EIP with an ECS instance of a VPC network, a private network SLB instance of a VPC network, or a NAT gateway. For more information, see What is an EIP?.


  1. Log on to the SLB console.
  2. In the left-side navigation pane, choose Instances > Instances.
  3. Select a region and find the SLB instance with which you want to associate an EIP.
    Note The SLB instance to be associated with an EIP must meet the following requirements:
    • The network type of the SLB instance must be VPC.
    • The SLB instance and the EIP must belong to the same region.
    • Only one EIP can be associated with an SLB instance.
  4. Choose More, and then click Bind EIP in the corresponding Actions column.
  5. In the panel that appears, select an EIP from Available EIPs.
    Note If you associate a private network SLB instance with an EIP, the VPC network traffic that passes through the SLB instance may be disrupted for a short period of time. We recommend that you associate the SLB instance during off-peak hours or switch the workloads to other instances first.
  6. Click OK.