This topic describes how to set a cross-region connection bandwidth to connect network instances across different regions. By doing so, you can achieve internal network communication.

Prerequisites

You have attached the networks to be connected to the same CEN instance. For more information, see Step 3: Attach networks.

Background information

Establishing connection between networks in the same region doesn't require a bandwidth package or incur any costs. However, you must purchase a bandwidth package if you want to connect network instances across different regions. When you purchase a bandwidth package, you need to specify the areas to be interconnected. An area is a collection of multiple regions. After you purchase a bandwidth package, you need to set a connection bandwidth for the regions to interconnect through the internal network.

Purchase a bandwidth package

To purchase a bandwidth package, follow these steps:

  1. Log on to the CEN console.
  2. On the Instances page, find the target CEN instance and click the instance ID.
  3. On the CEN page, click Bandwidth Packages.
    购买带宽包
  4. Click Buy Bandwidth Package (Subscription).
  5. CEN ID: Select the CEN instance for which you want to purchase a bandwidth packet.
  6. Select the areas to be interconnected.
    An area is a collection of regions. Each area contains one or more Alibaba Cloud regions. After you purchase a bandwidth package and set a cross-region interconnection bandwidth for two areas, network instances in the regions of these two areas can communicate with each other.
    Notice After you purchase the bandwidth package, the interconnected areas cannot be modified.
    Area Included regions
    Mainland China China (Qingdao), China (Beijing), China (Zhangjiakou), China (Shenzhen), China (Hangzhou), China (Shanghai), China (Hohhot), China (Chengdu)
    North America US (Silicon Valley), US (Virginia)
    Asia Pacific China (Hong Kong), Singapore, Malaysia (Kuala Lumpur), Japan (Tokyo), Indonesia (Jakarta), India (Mumbai)
    Europe Germany (Frankfurt), UK (London)
    Australia Australia (Sydney)
  7. Set the bandwidth of the bandwidth package.
  8. Enter a name for the bandwidth package.
  9. Select a duration, and then select Auto Renew or not.
  10. Click Buy Now and complete the payment.

Set a cross-region connection bandwidth

After purchasing a bandwidth package, complete these steps to set the cross-region connection bandwidth:

  1. Log on to the CEN console.
  2. On the Instances page, find the target CEN instance and click the instance ID.
  3. On the CEN page, click Region Connections, and then click Set Region Connection.
    region connection
  4. Bandwidth Packages: Select the bandwidth package that you purchased.
  5. Connected Regions: Select two regions to be interconnected.
  6. Bandwidth: Set a bandwidth for the selected regions
    Note A default bandwidth of 1 kbps is provided for you to conduct connectivity tests. We recommend that you set the bandwidth value according to your specific needs. The sum of all the connection bandwidth values cannot exceed the bandwidth value of the bandwidth package.
  7. Click OK.