A company’s Beijing Branch has two VPCs in isolated Intranets. The network segment of VPC A is 10.0.0.0/8, including subnet a 10.0.0.0/24, while ECS a is created under subnet a; the network segment of VPC B is 192.168. 0.0/16, including subnet b 192.168.0.0/24, while ECS b is created under subnet b. The two VPCs can be connected through Peering, and subnet a and subnet b at both ends of the Peering can access each other. The configuration process is as follows:

Step 1: Creating a Peering Instance

Log in to the [VPC] Management Console, and click Peering.
Enter the [Peering] homepage, and clickCreate Peering.
The [Create Peering] pop-up window appears. Fill in the corresponding parameters according to the prompts on the page, input the name of the Peering, and select the local VPC A and peer VPC B that need to communicate under the current account.
Click OK to complete the creation of the Peering under the same account.

Step 2: Configuring Routes

When two VPCs under the same account establish a Peering, the connection request of the other party is accepted by default. Configure the local route ( 192.168.0.0/24) and the peer route (10.0.0.0/24 ) respectively on the Peering route page under the account.

Step 3: Verification Test

After completing the above configuration, you can perform a ping testing from ECS a to ECS b to test the connectivity.

VPC Peering Connection