What does packet duplication do in Cisco SD-WAN?
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Correct answer: Copies of packets are sent over multiple WAN circuits to overcome packet loss..
Why this is the answer
Packet duplication in Cisco SD-WAN is a feature designed to improve application experience over unreliable WAN links. It works by sending identical copies of selected data packets over two or more different WAN circuits simultaneously. The first packet to arrive at the destination is accepted, and the duplicates are discarded. This mechanism effectively mitigates packet loss, which can significantly degrade the performance of real-time applications like voice and video. It does not add custom routing headers, compress traffic, or analyze application patterns for detection rules.
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