Migrate from Static Routing to Dynamic BGP Routing on AWS Site-to-Site VPN

This article provides a comprehensive guide to migrating AWS Site-to-Site VPN connections from static routing to dynamic BGP routing, explaining when each approach is appropriate and providing step-by-step migration procedures.

• BGP routing enables automatic failover, route propagation, and higher bandwidth via ECMP on Transit Gateway
• Static routing suits small stable networks; BGP required for dynamic multi-site environments
• BGP requires BGP expertise, active monitoring, and MD5 authentication for production use
• Transit Gateway migrations allow parallel connections; VGW migrations require downtime and connection deletion
• Migration steps include documenting current config, creating new BGP connection, verifying BGP sessions, then removing static routes
• Route propagation must be enabled on VGW; Transit Gateway handles propagation at attachment level
• Cloud WAN migration follows Transit Gateway approach with segment attachment considerations

The guide enables organizations to transition to dynamic routing while minimizing network disruption through careful planning and parallel testing where possible.