Help Center/ Anti-DDoS Service/ Best Practices/ Best Practices of Advanced Anti-DDoS/ Migrating Website Services Between Two AAD Instances
Updated on 2026-06-08 GMT+08:00

Migrating Website Services Between Two AAD Instances

Application Scenarios

Once a website service is connected to AAD, you can switch its origin server IP address or origin server domain name to another AAD instance for protection by changing the corresponding high-defense IP resolution line.

The modified resolution lines take effect in about five minutes. To ensure normal service access, you are advised to perform this operation during off-peak hours.

Resource and Cost Planning

Resource

Description

Quantity

Cost

AAD instance

Protects origin server domain names or IP addresses.

2

For details about AAD billing modes and standards, see Billing Items.

Procedure

  1. Log in to the AAD console.
  2. In the navigation pane on the left, choose Advanced Anti-DDoS > Domain Name Access.
  3. Locate the target domain name, and click View Details in the Instance and Line column.

    Figure 1 Viewing task details

  4. In the upper right corner of the instance line list, click Add Instance Line.

    Figure 2 Adding an instance line

  5. In the displayed dialog box, click Add Instance Line, and click OK.

    Figure 3 Adding a line

  6. Set the Line Resolution Switch of the newly added line to .

    Figure 4 Line resolution

  7. Set Line Resolution Switch of the old line to to disable DNS resolution for the high-defense IP address of the old AAD instance and line.
  8. Click Delete Line. In the displayed dialog box, click OK to delete the AAD instance and the high-defense IP address of the line.

    You are not advised to delete the line until 24 hours after disabling the domain name resolution function of the high-defense IP address in the old AAD instance and line.