Customers can define VCNs according their specific workload IP address requirements. A VCN can be divided into smaller ranges by using private or public subnets, or assigned multiple IP addresses to one VCN. Virtual routers and gateways can be used to extend existing on-premises networks or interconnects. Peering gateways are used by customers to connect to other VCNs within a tenant or to connect securely with other tenancies. Customers can connect directly to their OCI virtual clouds network using FastConnect via dedicated, private, high bandwidth connections. Customers simply choose the appropriate port speed based on how much data they have and pay a consistent, low monthly price. Other providers charge for the amount of data moved, which can be expensive and unpredictable.Prevent attacks on customer tenancies with isolated network virtualization. OCI's security-first architecture includes a SmartNIC, which is a custom-designed SmartNIC that isolates and virtualizes the network.