Multiple Site-to-Site VPN Connections in AWS Hub and Spoke Topology
When setting up an IPSec VPN connection between your AWS network and your corporate data center, the fully-managed AWS Site-to-Site VPN service is a popular choice that often comes to mind. AWS Site-to-Site VPN offers a highly-available, scalable, and secure way to connect your on-premises users and workloads to AWS. In this blog post, I would like to show you how you can go beyond a simple, static AWS Site-to-Site VPN connection by leveraging dynamically routed Site-to-Site VPNs in combination with a Transit Gateway. This hub and spoke network setup will allow us to employ the Border Gateway Protocol (BGP) as well as equal-cost multi-path routing (ECMP) and AWS Global Accelerator to not only exchange routing information between AWS and the corporate data center automatically but also increases the overall VPN throughput and reliability.
