About This Architecture

Hub-and-spoke VCN topology with Dynamic Routing Gateway (DRG) centralizing connectivity across production, non-production, DR, and SDDC environments on Oracle Cloud. Multiple VCN attachments (PROD-OCI-VCP, NPROD-OCI-VCP, PROD-SDDC-VCP, DR-REALIZE-VCP) connect to a central DRG hub, enabling transitive routing and simplified network management. Dual FastConnect circuits (RT07 active, RT08 standby) provide redundant on-premises and multicloud connectivity with failover capability. This architecture reduces operational complexity, improves blast radius isolation, and supports hybrid cloud scenarios across 10.207.0.0/16 and 10.0.0.0/8 address spaces. Fork this diagram on Diagrams.so to customize attachment policies, add route tables, or model failover scenarios for your OCI environment.

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How do I design a scalable multi-VCN network on Oracle Cloud with redundant on-premises connectivity?

This diagram shows a hub-and-spoke pattern using OCI's Dynamic Routing Gateway (DRG) as the central hub, with multiple VCN attachments (production, non-production, DR, SDDC) connecting through it. Dual FastConnect circuits (RT07 active, RT08 standby) provide redundant hybrid connectivity to on-premises and multicloud environments, enabling transitive routing and simplified network management acros