Line Quality Evaluation and Service Scheduling Scheme Based on SD-WAN Network

SD-WAN is a flexible enterprise wide area network access technology. The key technology in SD-WAN is the creation of multiple high-performance connections across WAN links, such as the Internet or MSTP, where enterprises can dynamically select reliable paths for different traffic flows. In response to the degradation of network quality for Internet link connections over SD-WAN networks, this paper proposes a transmission line quality evaluation scheme and traffic scheduling scheme based on service priority evaluation under SD-WAN network. It is a kind of line quality evaluation based on network delay, packet loss, jitter and other parameters. In the case of line quality decline, the service scheduling scheme or strategic resending is proposed to ensure that the service is carried out without difference, which can save the network cost for users.