Configuring networking connections between two VPCs (VPC peering)

In this recipe, we will configure VPC peering. VPC peering helps you connect instances in two different VPCs using their private IP addresses. VPC peering is limited to within a region. However, you can create a VPC peering connection between VPCs that belong to different AWS accounts. The two VPCs that participate in VPC peering must not have matching or overlapping CIDR addresses. To create a VPC connection, the owner of the local VPC has to send the request to the owner of the peer VPC located in the same account or a different account. Once the owner of peer VPC accepts the request, the VPC peering connection is activated. You will need to update the routes in your route table to send traffic to the peer VPC and vice versa. You will also need to update your instance security groups to allow traffic from-to the peer VPC.

How to do it…

In this section, we present the commands to creating a VPC peering connection, accepting...