When setting up secure connections to multiple on-premises locations in OCI, which method is recommended?

Creating multiple IPSec connections to a single Dynamic Routing Gateway (DRG) is the recommended method for establishing secure connections to multiple on-premises locations in Oracle Cloud Infrastructure (OCI). This approach allows for efficient management and maintains scalability as each on-premises site can have its own dedicated IPSec tunnel, enabling secure and reliable communication.

Using a single DRG to which multiple IPSec connections are established allows the OCI environment to effectively route traffic to and from various on-premises networks while minimizing complexity. Additionally, it enables redundancy and failover capabilities, as individual connections can be monitored and managed without requiring changes to other connections.

In contrast, creating multiple internet gateways would not facilitate optimized and secure connections to multiple on-premises networks since internet gateways are generally designed for public internet access rather than secure VPN configurations.

Establishing a single IPSec connection for all locations can pose challenges regarding traffic management and redundancy, as it might not handle failure of the tunnel effectively, and can lead to bottlenecks. Creating separate DRGs for each location would increase management overhead and complexity, which can lead to higher operational costs and potential routing issues between multiple DRGs that could complicate the architecture unnecessarily.

Overall, option B is the best practice for securely linking multiple on