After you create a Cloud Enterprise Network (CEN) instance, you can attach network instances to the CEN instance. Supported network instances are virtual private clouds (VPCs), virtual border routers (VBRs), and Cloud Connect Network (CCN) instances. After you attach network instances to a CEN instance, the CEN instance automatically learns routes from the attached network instances. Then, the network instances can communicate with each other.

Prerequisites

Before you attach network instances, make sure that the following requirements are met:

Background information

cen-abc123 is a CEN instance created by account 87654321, as shown in the preceding figure. The network instance vpc-b123 is created by the same account and the network instance vpc-a321 is created by a different account. You can attach both network instances to the CEN instance to enable them to communicate with each other.

Attach a network instance that is created by the same account

To attach vpc-b123 to cen-abc123, perform the following operations:

  1. Log on to the CEN console.
  2. On the Instances page, find the CEN instance that you want to manage and click its ID.
  3. Click the Networks tab and click Attach Network.
  4. Click the Your Account tab.
  5. Network Type: Select the type of the network instance to attach.
    Supported network instances are VPCs, VBRs, and CCN instances.
  6. Region: Select the region where the network instance is created.
  7. Networks: Select the network instance that you want to attach. In this example, vpc-b123 is selected.
    Attach a network instance that is created by the same account
  8. Click OK.

Attach a network instance that is created by a different account

Notice Before you attach a network instance created by another account, you must acquire the required permissions on the network instance. After you acquire the permissions, make sure that the ID of the account and the ID of the network instance that you want to attach are obtained.

For more information, see the following topics:

To attach vpc-a321 that is created by another account to cen-abc123, perform the following operations:

  1. Log on to the CEN console.
  2. On the Instances page, find the CEN instance that you want to manage and click its ID.
  3. Click the Networks tab and click Attach Network.
  4. Click the Different Account tab.
  5. Owner Account: Enter the ID of the account to which the network instance belongs. In this example, 12345678 is entered.
  6. Network Type: Select the type of the network instance to attach.
    Supported network instances are VPCs, VBRs, and CCN instances.
  7. Region: Select the region where the network instance is created.
  8. Network Type: Enter the ID of the network instance that you want to attach. In this example, vpc-a321 is entered.
    Attach a network instance that is created by a different account
  9. Click OK.