VPC Peering Connection

A VPC peering connection connects two VPCs to enable them to communicate using private IP addresses. The VPCs to be peered can be in from same account or different accounts, but must be in the same region.

Figure 1 shows an application scenario of VPC peering connections.

• There are two VPCs (VPC-A and VPC-B) in region A that are not connected.
• Service servers (ECS-A01 and ECS-A02) are in VPC-A, and database servers (RDS-B01 and RDS-B02) are in VPC-B. The service servers and database servers cannot communicate with each other.

• You need to create a VPC peering connection (peering-AB) between VPC-A and VPC-B so the service servers and database servers can communicate with each other.

Figure 1 Two VPCs connected by a VPC peering connection