Which function is performed by vSmart in the Cisco SD-WAN architecture?

The vSmart controller in Cisco SD-WAN is primarily responsible for distributing centralized control plane policies, including routing, security, and quality of service (QoS) policies, to the vEdge routers, ensuring consistent policy enforcement across the entire SD-WAN fabric.

Localized policies, often specific to a site or device, are executed by the vEdge routers themselves, based on the broader centralized policies received from the vSmart controller.

Redistribution between OMP (Overlay Management Protocol) and other routing protocols (such as OSPF or BGP) on the local network is a function performed by the vEdge routers at the branch or data center sites.

Facilitation of NAT detection and traversal is primarily handled by the vBond orchestrator and the vEdge routers to establish and maintain connectivity across various network topologies.