Configuring Route Table in AWS

In the AWS, a route table is a collection of rules, known as routes, that defines how network traffic is directed. Each AWS Virtual Private Cloud (VPC) subnet is associated with a route table, which governs traffic flow between subnets. A route table includes details such as the Route Table ID and the ID of the associated VPC.

For example, a VPC route table specifies how packets are routed within your Amazon VPC. Depending on your network architecture, you can route traffic using transit gateways, VPC peering connections, or egress-only internet gateways.

In our previous article, we configured VPN from AWS to Azure; click here to learn more about VPN configuration.

Step 1. Navigate to the Route tables under the Virtual Private Cloud and select the Route.

Step 2. Once the Route Table is selected, Click the Action down arrow and choose Edit routes.

Step 3. Click Add Routes, enter the Remote Network Address (Azure Virtual Networks Address space), and choose the target as Virtual Private Gateway.

If the AWS instances need to access the Azure instances, this address space should be added to the route table.

Step 4. Once the Virtual Private Gateway is selected, we must choose the Gateway; once we select the Gateway, click Save Changes.

Step 5. Navigate to the Route tables under the Virtual Private Cloud to verify the routes.

Summary

VPC route tables are essential for networking within a VPC, as they manage traffic flow between subnets and gateways.