To connect network instances in different regions, you must purchase a Cloud Enterprise Network (CEN) bandwidth plan and allocate bandwidth for cross-region communication. If the network instances to be connected are deployed in the same region, you do not need to purchase a CEN bandwidth plan.

Background information

Configurations of a Cloud Enterprise Network (CEN) bandwidth plan include the bandwidth limit and areas to be connected. You must specify the areas to be connected when you purchase a bandwidth plan. An area is a collection of regions. Each area contains one or more Alibaba Cloud regions.
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 (Hangzhou), China (Shanghai), 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)

Procedure

  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 CEN page, click the Bandwidth Plans tab, and click Purchase Bandwidth Plan(Subscription).
  4. Set the following parameters, click Buy Now, and complete the payment.
    Parameter Description
    CEN ID Select the CEN instance for which you want to purchase a bandwidth plan.
    Area A Select an area 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.
    Note You cannot change the area after the bandwidth plan is purchased.
    Billing Method Displays the billing method of the bandwidth plan.
    Bandwidth Specify the bandwidth limit of the bandwidth plan based on your business requirements.
    Name Enter a name for the bandwidth plan.
    Duration Specify the subscription duration.
    Note By default, you cannot delete bandwidth plans that you purchased. To delete a bandwidth plan, submit a ticket.