This topic describes how to use Cloud Enterprise Network (CEN) to connect the networks that belong to the same account but different regions.

Prerequisites

  • VPCs or Virtual Border Routers (VBRs) are created.

  • The VPCs and VBRs to be connected do not use Express Connect.

Step 1 Create a CEN instance

  1. Log on to the CEN console.
  2. On the Instances page, click Create CEN instance.
  3. Configure the CEN instance.
    • Name: Enter a name for the CEN instance to be created. The name must be 2 to 128 characters in length and can contain letters, numbers, hyphens (-), and underscores (_). The name must start with a letter or a Chinese character. In this example, enter SameAccountDifferentRegions.
    • Description: Enter a description for the CEN instance. The description must be 2 to 256 characters in length and cannot start with http:// or https://.
    • Attach Network:

      • Network Type: Select the type of the network to attach. You can attach a VPC, a VBR, or a Cloud Connect Network (CCN). In this example, select VPC.
      • Region: Select the region of the network. In this example, select China (Qingdao).
      • Networks: Select the instance to attach. In this example, select a VPC.

Step 2 Attach networks

  1. On the Instances page, find the created CEN instance, and click Manage in the Actions column.
  2. On the Networks tab, click Attach Network and attach the network as follows:
    • Account: Click the Your Account tab.
    • Network Type: Select the type of the network to attach. You can attach a VPC, a VBR, or a Cloud Connect Network (CCN). In this example, select VPC.
    • Region: Select the region of the network. In this example, select China (Beijing).
    • Networks: Select the instance to attach. In this example, select a VPC.


Step 3 Buy a bandwidth package

To buy a bandwidth package, follow these steps:
  1. On the Instances page, click the ID of the created CEN instance, and then click the Bandwidth Packages tab.
  2. Click Buy Bandwidth Package (Subscription).
  3. Configure the bandwidth package as follows:
    • CEN ID: Select the CEN instance for which you want to purchase a bandwidth packet.
    • Area: Select the areas to be connected.

      In this example, the networks to be connected belong to the China (Qingdao) and China (Beijing) regions. Therefore, the areas are Mainland China and Mainland China. If the networks to be connected belong to China (Qingdao) and US (Virginia), the connection areas are Mainland China and North America.

    • Bandwidth: Set the bandwidth of the bandwidth package. In this example, set the bandwidth to 8 Mbps.
    • Name: Enter a name for the bandwidth package. In this example, enter MainlandBandwidthPackage.
    • Duration: Select the purchase period. In this example, select 1 month.

Step 4 Set the cross-region bandwidth

  1. On the Instances page, click the ID of the created CEN instance, and then click the Region Connections tab.
  2. Click Set Region Connection.
  3. Configure the cross-region bandwidth:
    • Bandwidth Packages: Select a bandwidth package. In this example, select Mainland China ⇋ Mainland China.
    • Connected Regions: Select the regions to connect. The selected regions must belong to the selected connected areas. In this example, select China (Qingdao) and China (Beijing).
    • Bandwidth: Set a bandwidth value for the connected regions. In this example, set the bandwidth to 5 Mbps.

Step 5 Test the connectivity

Log on to any ECS instance in an attached network and ping the private IP address of another ECS instance in another attached network to test the connectivity.

Note Make sure that corresponding authorization rules are configured in the security groups of the ECS instances.