For data plane resiliency, what does the Cisco SD-WAN software implement?

Cisco SD-WAN utilizes Bidirectional Forwarding Detection (BFD) for rapid detection of data plane path failures between WAN Edge devices. BFD continuously monitors the liveness of tunnels, enabling quick failover to an alternate path and maintaining data plane resiliency.

Establishing affinity between vSmart controllers and WAN Edge routers is related to control plane stability and load distribution, not direct data plane resiliency.

Multiple vBond orchestrators provide redundancy for the orchestration plane, ensuring continuous device onboarding and initial setup, not ongoing data plane traffic forwarding resiliency.

OMP (Overlay Management Protocol) is a control plane protocol responsible for exchanging routing, service, and TLOC information, but it does not actively monitor data plane link failures.