Troubleshooting SD-WAN by understanding how to identify, analyze, and resolve common issues in software-defined wide area network environments. This training covers systematic approaches to diagnosing problems related to connectivity, routing, performance, security, and application delivery across distributed networks. It explains how SD-WAN troubleshooting tools and logs help detect faults such as link failures, misconfigurations, latency issues, and packet loss. You will learn how to isolate root causes, validate network paths, and restore optimal network performance efficiently. The course also covers monitoring techniques, diagnostic commands, failover testing, and best practices for maintaining stable SD-WAN operations. It focuses on building practical skills to ensure reliable and efficient enterprise network troubleshooting.