This image shows how Subnet 1 and Subnet 2 can communicate with each other and the VCN is still able to access the systems in Subnet 1 if the CPE 1 router in the preceding diagram goes down.

The image shows an On Premises Network containing two Geographical Areas (GA), (A 10.20.0.0/16 and B 10.40.0.0/16). Each GA contains a subnet, GA A contains Subnet 1, GA B contains Subnet 2. A large, unidirectional arrow connects GA B to GA A.

Each GA is connected to a CPE router: GA A connects to CPE 1 142.34.145.37; GA B connects to CPE 2 137.15.129.4. CPE1 has a large "X" though it, indicating that it is not functional and the lines indicating the connection are dotted, indicating that traffic is not flowing along this connection.

The CPE routers connect over separate static routes to a VCN (VCN 17.2.16.0.0./16) via a Dynamic Routing Gateway, labeled Dynamic Routing headend. The VCN itself connects to a Default Routing Table wherein traffic is routed based on the GA. A large arrow points along the static route to from the DRG to CPE 2