SD-WAN CPE
Application-aware WAN path selection with BFD-driven automatic failover.
SD-WAN CPE devices running VPP steer traffic by application class across multiple WAN uplinks. Voice and video go to the low-latency MPLS link. Bulk downloads go to the cheap internet uplink.
Policy
vppctl sdwan policy add category VoIP uplink mpls0 failover inet0
vppctl sdwan policy add category VideoConferencing uplink mpls0 failover inet0
vppctl sdwan policy add category P2P uplink lte0
After classification (3–8 packets), the steering decision is cached — subsequent packets skip the steering node entirely. Zero overhead after the first flow decision.