# Analysis of SD-WAN Architectures and Techniques for Efficient Traffic Control Under Transmission Constraints—Overview of Solutions

## TL;DR

This paper reviews SD-WAN technologies and their effectiveness in managing network traffic efficiently in resource-limited environments.

## Contribution

The paper provides a comprehensive overview of SD-WAN solutions and techniques tailored for constrained transmission environments.

## Key findings

- SD-WAN improves performance and reduces latency compared to traditional WAN architectures.
- AI is increasingly used to optimize path selection and enhance threat detection in SD-WAN.
- Commercial and research-based SD-WAN solutions offer diverse approaches to traffic control and security.

## Abstract

Software-Defined Wide Area Networks (SD-WAN) have emerged as a rapidly evolving technology designed to meet the growing demand for flexible, secure, and scalable network infrastructures. This paper provides a review of SD-WAN techniques, focusing on their principles of operation, mechanisms, and evolution, with particular attention to applications in resource-constrained environments such as mobile, satellite, and radio networks. The analysis highlights key architectural elements, including security mechanisms, monitoring methods and metrics, and management protocols. A classification of both commercial (e.g., Cisco SD-WAN, Fortinet Secure SD-WAN, VMware SD-WAN, Palo Alto Prisma SD-WAN, HPE Aruba EdgeConnect) and research-based solutions is presented. The overview covers overlay protocols such as Overlay Management Protocol (OMP), Dynamic Multipath Optimization (DMPO), App-ID, OpenFlow, and NETCONF, as well as tunneling mechanisms such as IPsec and WireGuard. The discussion further covers control plane architectures (centralized, distributed, and hybrid) and network monitoring methods, including latency, jitter, and packet loss measurement. The growing importance of Artificial Intelligence (AI) in optimizing path selection and improving threat detection in SD-WAN environments, especially in resource-constrained networks, is emphasized. Analysis of solutions indicates that SD-WAN improves performance, reduces latency, and lowers operating costs compared to traditional WAN architectures. The paper concludes with guidelines and recommendations for using SD-WAN in resource-constrained environments.