Associate a CCN instance with a transit router - Cloud Enterprise Network

This topic describes how to associate a Cloud Connect Network (CCN) instance with a transit router of Cloud Enterprise Network (CEN) in the same region. After you associate a CCN instance with a transit router, you can use the transit router to establish private network connections.

Background information

Transit routers provide Basic Edition and Enterprise Edition. Transit routers of Enterprise Edition provide a wider range of features to manage routes. For more information about transit routers of Basic Edition and Enterprise Edition, see How transit routers work.

Before you associate a CCN instance, take note of the following information:

CCN regions support only transit routers of Basic Edition.
You can associate a transit router of Basic Edition with a CCN instance that belongs to the same or another Alibaba Cloud account. If you want to associate a transit router with a CCN instance that belongs to another Alibaba Cloud account, you must first obtain authorization. For more information, see Grant permissions on a network instance that belongs to another account.

Procedure

Log on to the CEN console.
On the Instances page, click the ID of the CEN instance that you want to manage.
On the CEN details page, you can use one of the following methods to navigate to the Connection with Peer Network Instance page and create a network instance connection.
- On the Basic Settings tab, click next to CCN.
  Note
  If no transit router is created for the CEN instance, you can use this method to create the first network instance connection.
- On the Basic Settings>Transit Router tab, find a transit router and click Create Connection in the Actions column.

On the Connection with Peer Network Instance page, set the following parameters and click OK.

Parameter	Description
Network Type	Select Cloud Connect Network (CCN).
Region	Select the region where the network instance is created.
Transit Router	Displays transit routers that are created in the selected region. If no transit router is found in the selected region, the system automatically creates a transit router.
Resource Owner ID	Select the type of account to which the network instance that you want to connect belongs. If the network instance and the transit router that you want to connect belong to the same Alibaba Cloud account, select Current Account. If the network instance and the transit router that you want to connect belong to different Alibaba Cloud accounts, select Different Account, and enter the ID of the Alibaba Cloud account to which the network instance belongs.
Network Instance	Select the ID of the CCN instance to be associated. After you associate a CCN instance with a transit router, the CCN instance automatically advertises routes to the route table of the transit router.