An Anti-DDoS Premium instance of the Insurance mitigation plan or of the Secure Mainland China Acceleration (Sec-MCA) mitigation plan provides two advanced mitigation sessions free of charge per month. If the two advanced mitigation sessions that are provided each month cannot meet your business requirements, we recommend that you purchase global advanced mitigation sessions to improve mitigation capabilities.

Types of global advanced mitigation sessions

Global advanced mitigation sessions are categorized into the following types:
  • Global advanced mitigation session for the Insurance mitigation plan: This type is available only for Anti-DDoS Premium instances of the Insurance mitigation plan.
  • Global advanced mitigation session for the Sec-MCA mitigation plan: This type is available only for Anti-DDoS Premium instances of the Sec-MCA mitigation plan.

Method to use global advanced mitigation sessions

If the two advanced mitigation sessions that are provided free of charge are exhausted within a month and a volumetric attack whose traffic exceeds the clean bandwidth of your Anti-DDoS Premium instance occurs, Anti-DDoS Premium starts to consume the global advanced mitigation sessions that you purchase to protect your service.

The global advanced mitigation sessions are shared by all valid Anti-DDoS Premium instances of the Insurance mitigation plan and of the Sec-MCA mitigation plan within your Alibaba Cloud account. You are not required to bind the global advanced mitigation sessions to the instances.

The validity period of global advanced mitigation sessions is one year. After you purchase global advanced mitigation sessions, you must use the global advanced mitigation sessions within one year. If you do not use the global advanced mitigation sessions within one year, the global advanced mitigation sessions expire and cannot be used.
Notice After you purchase global advanced mitigation sessions, you cannot request a refund of the fees that you paid.
For more information about the billing methods of global advanced mitigation sessions, see Billing methods of global advanced mitigation sessions.

Limits on the use of advanced mitigation sessions

Each Alibaba Cloud account can use advanced mitigation sessions up to 20 times per calendar month. The advanced mitigation sessions include the advanced mitigation sessions that are provided free of charge and the global advanced mitigation sessions that you purchase. After your Alibaba Cloud account uses advanced mitigation sessions for 20 times within a calendar month, the advanced mitigation feature is disabled.

In this case, you cannot use the advanced mitigation feature for the current calendar month. You can only continue to use the feature in the following calendar month.

Note If your business frequently experiences volumetric DDoS attacks, we recommend that you purchase an Anti-DDoS Premium instance of the Ultimate mitigation plan. The instance provides unlimited advanced mitigation sessions.

Procedure

  1. Log on to the Anti-DDoS Pro console.
  2. In the top navigation bar, select Outside Mainland China.
    If you select this region, the Anti-DDoS Premium console appears.
  3. In the left-side navigation pane, choose Assets > Instances.
  4. In the upper-right corner of the Instances page, click Purchase.
  5. On the Global Advanced Mitigation page, select Insurance or Sec-MCA for Product, and set Quantity to the number of global advanced mitigation sessions that you want to purchase. Global advanced mitigation
  6. Click Buy Now and complete the payment.
    After you purchase global advanced mitigation sessions, you can view the numbers of available advanced mitigation sessions for the Anti-DDoS Premium instances of the Insurance mitigation plan and of the Sec-MCA mitigation plan above the instance list. Number of available global advanced mitigation sessions

    To view the global advanced mitigation sessions that you purchase and the validity period of the global advanced mitigation sessions, log on to the Billing Management console and choose Resource Packages > Overview.