This topic describes how to associate a high-availability virtual IP address (HAVIP) with secondary ENIs that are attached to Elastic Compute Service (ECS) instances. Then, the ECS instances can send Address Resolution Protocol (ARP) messages to advertise the HAVIP. This way, the ECS instances can use more than one private IP address.


Secondary ENIs are created. For more information, see Create an ENI.

Background information

You can associate each HAVIP with two ECS instances or two secondary ENIs. However, you cannot associate an HAVIP with an ECS instance and a secondary ENI.


  1. Log on to the VPC console.
  2. In the left-side navigation pane, click HaVip Addresses.
  3. In the top navigation bar, select the region where the HAVIP is created.
  4. On the HaVip Details page, find the HAVIP that you want to manage and click Manage in the Actions column.