To connect network instances in different regions, you must purchase a Cloud Enterprise Network (CEN) bandwidth plan and allocate bandwidth for cross-region communication. Network instances in the same region can communicate with each other after they are attached to the same CEN instance. You do not need to purchase a bandwidth plan.

Background information

When you purchase a bandwidth plan, you must specify the areas to be connected. An area consists of one or more Alibaba Cloud regions. You can select areas to be connected based on the regions that you want to connect. The following table describes the relationship between regions and areas.

Area Region
Mainland China China (Qingdao), China (Beijing), China (Zhangjiakou), China (Hohhot), China (Ulanqab), China (Shenzhen), China (Heyuan), China (Guangzhou), China (Hangzhou), China (Shanghai), China (Nanjing), and China (Chengdu).
North America US (Silicon Valley) and US (Virginia)
Asia Pacific China (Hong Kong), Singapore (Singapore), Malaysia (Kuala Lumpur), Japan (Tokyo), Indonesia (Jakarta), and India (Mumbai)
Europe Germany (Frankfurt) and UK (London)
Australia Australia (Sydney)

Limits

  • You can associate multiple bandwidth plans with a Cloud Enterprise Network (CEN) instance. However, the connected areas specified by each bandwidth plan must be different.

    For example, if a CEN instance is associated with a bandwidth plan that connects Chinese mainland to Chinese mainland, you cannot associate another bandwidth plan that also connects Chinese mainland to Chinese mainland with the CEN instance. However, you can associate a bandwidth plan that connects Chinese mainland to North America with the CEN instance.

  • After you purchase a bandwidth plan, you cannot modify the connected areas.

Purchase a bandwidth plan

  1. Log on to the CEN console.
  2. On the Instances page, find the CEN instance that you want to manage and click Manage in the Actions column.
  3. On the details page of the CEN instance, click the Bandwidth Plans tab, and then click Purchase Bandwidth Plan(Subscription).
  4. Set the following parameters, click Buy Now, and then complete the payment.
    Parameter Description
    CEN ID Select the CEN instance for which you want to purchase a bandwidth plan.

    After you purchase the bandwidth plan, it is automatically associated with the CEN instance.

    Area A Select one of the areas where you want to enable cross-region communication.
    Note You cannot change the area after the bandwidth plan is purchased.
    Area B Select the other area where you want to enable cross-region communication.
    Billing Method Displays the billing method of the bandwidth plan. Default value: By bandwidth.
    Bandwidth Select a bandwidth value. Unit: Mbit/s.
    Name Enter a name for the bandwidth plan.
    Duration Select a duration for the bandwidth plan.

    You can select Auto-renewal to enable auto-renewal for the bandwidth plan.

    Resource Group Select the resource group to which the bandwidth plan belongs.

Disassociate a bandwidth plan from a CEN instance

After you purchase a bandwidth plan, the system automatically associates it with the CEN instance. You can disassociate a bandwidth plan from a CEN instance and associate the bandwidth plan with another CEN instance.

Before you disassociate a bandwidth plan, make sure that the cross-region connections that are associated with the bandwidth plan are deleted. For more information, see Delete bandwidth for cross-region connections.

  1. Log on to the CEN console.
  2. On the Instances page, find the CEN instance that you want to manage and click Manage in the Actions column.
  3. On the details page of the CEN instance, click the Bandwidth Plans tab, find the bandwidth plan that you want to disassociate, and then click Unbind in the Actions column.
  4. In the Disassociate from Bandwidth Plan message, confirm the bandwidth plan that you want to disassociate and click OK.
    You are still charged for disassociated bandwidth plans. The billing of a bandwidth plan stops only after you delete the bandwidth plan. For more information, see Delete a bandwidth plan.

Associate a bandwidth plan with a CEN instance

After you disassociate a bandwidth plan from a CEN instance, you can associate the bandwidth plan with another CEN instance.

  1. Log on to the CEN console.
  2. On the Instances page, find the CEN instance that you want to manage and click Manage in the Actions column.
  3. On the details page of the CEN instance, click the Bandwidth Plans tab, find the bandwidth plan that you want to associate, and then click Bind in the Actions column.
  4. In the Associate with Bandwidth Plan message, confirm the bandwidth plan that you want to associate and click OK.

Delete a bandwidth plan

You cannot manually delete a bandwidth plan. To delete a bandwidth plan, Submit a ticket.

References