AWS - VPC Peering

VPC Peering : Block Diagram

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Steps to configure the above diagram :

1. Create two VPCs , & assign the subnets, internet gateways , Route tables accordingly

2. Launch the EC2 instances on each of the VPCs created

3. Create the VPC peering connection on the VPC dashboard & assign the "FROM" & "TO" connections on the peering connection

4. Create the record on the route tables to pass the connection through the CIDR of the VPCs

5. Modify & configure the security groups accordingly

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Here we have sucessfully configured the VPC peering on AWS

Problem with the VPC Peering

The VPC peering feature is used to connect only two instance at a time but VPC peering cannot work if there are more than two VPCs to connect with, So for this scenario the VPC Transit Gateway is used.