Information about Packet Duplication
Cisco vEdge devices use packet duplication to overcome packet loss.
Packet duplication sends copies of packets on alternate available paths to reach Cisco vEdge devices. If one of the packets is lost, a copy of the packet is forwarded to the server. Receiving Cisco vEdge devices discard copies of the packet and forward one packet to the server.
Packet duplication is suitable for edges with multiple access links. Once packet duplication is configured and pushed to your device, you can see the tunnel packet duplication statistics.