The evolution of Wide Area Networks (WANs) has brought about significant changes in how organizations manage network performance and Quality of Service (QoS). Nowadays, numerous applications run over these networks, each demanding specific QoS criteria such as packet loss, latency, and jitter. Some of these new applications require exceptionally high performance, making it difficult to manage traffic accurately and meet Service Level Agreements (SLAs). Traditional WANs are finding it increasingly difficult to meet these evolving SLA demands. In this context, SD-WAN presents a promising solution to address these challenges. One of the key areas where SD-WAN shows significant improvement over traditional WANs is in packet loss recovery mechanisms. The experimental results of the analysis using the feature Forward Error Correction (FEC) as a packet loss recovery mechanism presented in this paper demonstrate that Cisco SD-WAN significantly improves overall network performance and QoS compared to traditional WAN systems. The network emulation software EVE-NG is used as a primary tool for this research experiment.
EVE-NG, Forward Error Correction (FEC), Packet loss, SD-WAN
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