Which benefit does packet duplication provide?

Packet data policy protection relates to security policies that define how traffic is handled or secured, not to the mechanism of sending duplicate packets.

Session security is typically achieved through encryption and authentication protocols like IPsec or TLS, which is distinct from simply duplicating packets.

Packet duplication, a feature in Cisco SD-WAN, sends duplicate copies of packets over multiple WAN transport tunnels simultaneously, significantly enhancing resilience by ensuring that if one path experiences packet loss, another copy can still reach the destination successfully.

Frame loss refers to data link layer (Layer 2) issues, whereas packet duplication in SD-WAN operates at the network layer (Layer 3) to protect against packet loss across different WAN paths.