Which element of the Cisco SD-WAN architecture facilitates the functions of controller discovery and NAT traversal?

The vSmart controller is responsible for establishing and maintaining the network topology, disseminating routing information, and enforcing policy across the SD-WAN fabric, not for initial controller discovery or NAT traversal.

The vBond orchestrator is the first point of contact for all SD-WAN components (vManage, vSmart, vEdge), handling initial authentication, establishing secure tunnels, and assisting vEdge routers behind NAT to discover and communicate with other controllers.

vManage is the centralized network management system for Cisco SD-WAN, providing a single pane of glass for configuration, monitoring, and troubleshooting, but it doesn't handle initial controller discovery or NAT traversal.

vEdge routers are the data plane elements of the SD-WAN, responsible for forwarding traffic and applying policies, but they rely on vBond for initial discovery and assistance with NAT traversal.