This tutorial guides you how to use CEN to connect the networks in the same region of different accounts.

It takes Account A and Account B as an example to introduce how to attach a network under Account B to a CEN instance under Account A.

Prerequisite

  • You have created VPCs or VBRs.

  • The VPCs and VBRs are not connected using Express Connect.

Step 1 Account A creates 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: The name of the CEN instance. The name can contain 2-128 English letters, numbers, hyphens, or underlines, and must start with English letters. In this tutorial, enter SameRegionDifferentAccount.

    • Attach a network:

      • Account: Select Your Account.
      • Network Type: Select the network to connect. You can attach a VPC or a VBR. In this tutorial, select VPC.
      • Region: Select the region of the network. In this tutorial, select China North 1.
      • Networks: Select the instance to attach. In this tutorial, select a VPC instance.
  4. Step 2 Attach networks

    In this tutorial, the ID of the CEN instance is cbn-xxxxxxxxxx4l7.

Step 2 Account B authorizes Account A to attach a network under Account B

Cross-account network instance loading requires authorization on the VPC or VBR detail page to be loaded, this operation takes VPC as an example.

  1. Use Account B to log on to the VPC Console.
  2. In the left-side navigation pane, click VPC.
  3. Click the ID of the target VPC.
  4. On the VPC Details page, click CEN Cross Account Authorization.
  5. In the displayed dialog box, enter the ID of the account and the CEN instance to authorize, and then click OK.


Step 3 Account A attaches the network

After the authorization is completed, Account A can attach the network of Account B:

  1. Use Account A to log on to the CEN console.
  2. On the Instances page, click the Manage option in the Column action of the created CEN instance.
  3. In the Networks tab, click Attach Network and configure the network as follows:
    • Account: Select Different Account.
    • Owner Account: Enter the ID of the account that owns the network to attach. In this tutorial, enter the account ID of Account B.
    • Network Type: Select the network to connect. You can attach a VPC or a VBR. In this tutorial, select VPC.
    • Region: Select the region of the network. In this tutorial, select China North 1.
    • Networks: Select the instance to attach. In this tutorial, select a VPC instance.


Step 4 Test the connectivity

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

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