You can attach the networks that need to communicate with each other to a Cloud Enterprise Network (CEN) instance. The networks could be Virtual Private Cloud instances (VPCs), Virtual Border Routers (VBRs), and Cloud Connect Networks (CCNs). CEN automatically learns the routes of the attached networks to achieve internal network communication.

Prerequisites

Before you attach networks, make sure the following conditions are met:
  • You have created a CEN instance. For more information, see Step 2: Create a CEN instance.
  • The networks to be attached are not attached to other CEN instances.

Background information

As shown in the figure, a CEN cen-abc123 is created under the account that is identified by the UID 87654321. You can attach network vpc-b123, which is under the same account, and network vpc-a321, which is under a different account, to cen-abc123, and thus interconnect vpc-b123 and vpc-a321.

Attach a network under the same account

To attach vpc-b123, a network under the same account, to the CEN instance cen-abc123, 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. Click the Networks tab and then click Attach Network.
  4. Click the Your Account tab.
  5. Network Type: Select the type of the network to be attached.
    You can attach VPCs, VBRs, and CCNs.
  6. Region: Select the region of the network.
  7. Networks: Select the instance to be attached. In this example, select vpc-b123.
  8. Click OK.

Attach a network under a different account

Notice Before you attach a network under a different account, you must obtain permissions from this account. After obtaining permissions, you must obtain the ID of this account and the instance ID of the network to be attached.

For more information, see:

To attach vpc-a321, a network under a different account, to the CEN instance cen-abc123, 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. Click the Networks tab and then click Attach Network.
  4. Click the Different Account tab.
  5. Owner Account: Enter the ID of the account to which the network to be attached belongs. In this example, enter 12345678.
  6. Network Type: Select the type of the network to be attached.
    You can attach VPCs, VBRs, and CCNs.
  7. Region: Select the region of the network.
  8. Networks: Enter the instance ID of the network to be attached. In this example, enter vpc-a321.
  9. Click OK.