Connecting VPCs in the Same Region But in Different Accounts over a Cloud Connection

Process Description

If you want to connect the VPCs in your account to those in another account, you can create a cloud connection, request permission from the other account to use their VPCs, and load all the VPCs to your cloud connection.

For details about the regions where cloud connections are available, see Region Availability.

Figure 1 How a cloud connection enables VPCs in the same region but different accounts to communicate with each other

Figure 2 illustrates how you can enable VPCs in the same region but in different accounts to communicate with each other using a cloud connection.

Figure 2 Process of enabling communication between VPCs

Preparations

Before creating a cloud connection, you need to sign up for a HUAWEI ID, enable Huawei Cloud services, complete real-name authentication, and top up your account. Ensure that your account has sufficient balance.

1. Sign up for a HUAWEI ID, enable Huawei Cloud services, and complete real-name authentication.
   If you already have a HUAWEI ID, skip this part. If you do not have a HUAWEI ID, perform the following operations to create one:

   1. Sign up for a HUAWEI ID and enable Huawei Cloud services.
   2. Complete real-name authentication.
2. Top up your account.

   Ensure that your account has sufficient balance. For details about how to top up an account, see Topping up an Account.

Step 1: Create a Cloud Connection

1. Go to the Cloud Connections page.
2. In the upper right corner of the page, click Create Cloud Connection.
3. Configure the parameters based on Table 1.

   Table 1 Parameters for creating a cloud connection

   Parameter	Description
   Name	Specifies the cloud connection name. The name can contain 1 to 64 characters. Only letters, digits, underscores (_), hyphens (-), and periods (.) are allowed.
   Enterprise Project	Provides a cloud resource management mode, in which cloud resources and members are centrally managed by project.
   Scenario	VPC: VPCs or virtual gateways can use this cloud connection.
   Tag	Identifies the cloud connection. A tag consists of a key and a value. You can add 20 tags to a cloud connection. NOTE: If a predefined tag has been created on Tag Management Service (TMS), you can directly select the corresponding tag key and value. For details about predefined tags, see Predefined Tags.
   Description	Provides supplementary information about the cloud connection. The description can contain no more than 255 characters.

4. Click OK.

Step 2: Request Permission to Use the VPC in the Other Account

In this example, the two VPCs are in different accounts. If the VPC in your account (account A) needs to communicate with that in the other account (account B), ask this other account to grant you the permission to load their VPC to your cloud connection. This other account can take the following steps to grant you the permission to load their VPC:

1. Go to the Cross-Account Authorization page.
2. On the Network Instances Authorized by Me tab, click Authorize Network Instance.
3. Configure the parameters based on Table 2.
   Figure 3 Cross-account authorization
   

   Table 2 Parameters for the other account to grant you the permission to load their VPC to your cloud connection

   Parameter	Description
   Region	Specifies the region where the VPC is located.
   VPC	Specifies the VPC to be loaded to your cloud connection.
   Peer Account ID	Specifies the ID of your account.
   Peer Cloud Connection ID	Specifies the ID of your cloud connection that the VPC is to be loaded to.
   Remarks	Provides supplementary information about cross-account authorization.

4. Click OK.

Step 3: Load Network Instances

Load the VPCs that need to communicate with each other to the cloud connection you have created. To load the VPC in the other account, take the following steps:

1. Go to the Cloud Connections page.
2. Click the name of the cloud connection to go to the Basic Information page.
3. Click the Network Instances tab.
4. Click Load Network Instance. In the displayed dialog, select Peer account.

   Configure other parameters based on Table 3 and click OK.

   Table 3 Parameters for loading network instances across accounts

   Parameter	Description
   Account	Specifies the account that provides the network instance. Select Peer account.
   Peer Account ID	Specifies the ID of the other account.
   Region	Specifies the region where the VPC you want to connect is located.
   Peer Project ID	Specifies the project ID of the VPC in the other account.
   Instance Type	VPC Specifies the type of the network instance that needs to be loaded to the cloud connection.
   Peer VPC	Specifies the VPC to be loaded.
   VPC CIDR Block	Specifies the subnets in the VPC you want to load and custom CIDR blocks.
   Remarks	Provides supplementary information about the network instance.

   

   • A network instance can only be loaded to one cloud connection.
   • If a VPC is loaded, the associated virtual gateway cannot be loaded.

5. Click Continue Loading if you need to load another network instance. If you do not need to load another network instance now, close the dialog box and view the loaded network instance on the Network Instances tab.