Which SD-WAN component selects a TVC (Tunnel Virtual Connection) over which to forward each ingress packet?

• A. SD-WAN Edge function
• B. Ingress IP Packet
• C. Egress IP Packet
• D. Internet Breakout / Local Internet Breakout

Answer: (A)

In SD-WAN, the decision of which Tunnel Virtual Connection to use for forwarding a given packet is made at the SD-WAN Edge. The edge examines each ingress packet, applies the configured policies and metrics (such as application type, QoS requirements, and link health), and then selects the appropriate TVC to carry that packet across the underlying transports. The ingress packet is the data unit being evaluated, while the egress side simply transmits it over the chosen tunnel after encapsulation. Internet Breakout describes where traffic exits to the Internet, not the per-packet tunnel selection itself. Therefore, the SD-WAN Edge function is the component responsible for selecting the TVC.