BGP Support: DRGs support Border Gateway Protocol (BGP) for dynamic routing exchange between attached networks. This allows for automatic path selection and traffic redirection based on network conditions, improving efficiency and scalability.
Centralized Management: DRGs act as centralized hubs, enabling you to manage BGP routing for multiple VCNs and on-premises connections from a single location.
Security: DRGs support private peering, ensuring secure communication between your on-premises network and VCNs without traversing the public internet.
Flexibility: DRGs offer various peering options, including local peering for intra-region connections and remote peering for cross-region connections.
Comparison with other options:
Service Gateway (A): Primarily for managing outbound internet traffic within a VCN, doesn,t support BGP or on-premises connections.
Internet Gateway (B): Provides public internet access within a VCN, not intended for secure, dynamic routing with an on-premises network.
Virtual Router (D): While virtual routers can perform routing within a VCN, they don,t support BGP peering with external networks like your on-premises environment.