What types of performance metrics should be monitored after SD-WAN tunnel deployment?

• A. Monitor path quality scores, latency, jitter, packet loss, and VPN tunnel status to validate performance
• B. Only monitor uptime date
• C. Only monitor bandwidth usage
• D. Monitor user login counts

Answer: (A)

After deploying an SD-WAN tunnel, you want visibility into how well the path handles traffic and whether the tunnel itself remains healthy. The most informative approach combines several metrics that reflect end-to-end performance and tunnel reliability. Monitoring path quality scores from the SD-WAN controller helps you understand how favorable each path is for traffic. Tracking latency tells you how long packets take to reach their destination, while jitter shows the variability in that delay, both of which directly impact applications, especially real-time ones like voice and video. Packet loss reveals how much data is being discarded, which degrades throughput and user experience. VPN tunnel status is essential to detect whether the tunnel is up, down, or experiencing instability or rekey events that could interrupt service. Together, these measures confirm that performance meets expectations and enable timely actions like rerouting or troubleshooting when issues arise. Relying on uptime alone misses degradation in quality, monitoring only bandwidth usage ignores delay and loss, and tracking user login counts provides no direct insight into network performance.