Overcoming Packet Loss With Forward Error Correction (FEC)

Enterprises rely on a variety of different technologies to build Wide Area Networks (WANs), such as Time Division Multiplexing, Frame Relay, and Virtual Private Networks. These technologies use well established, link-layer techniques to deliver error-free, well-formed Protocol Data Units (PDUs) to upper layers. However, different network-layer characteristics result in unique packet delivery behavior across these technologies. 

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