SD-WAN (software-defined wide area network) is a system that is currently popular and is the most successful business adoption of SDN (software defined network). As technology advances, there are also challenges that DevOps must face. To face these challenges, you need to monitor SD-WAN. If in the previous article, the definition of SD-WAN has been explained, this article will discuss SD-WAN monitoring. Here are 3 strategies for successful SD-WAN monitoring quoted from an article written by Kumar.
Packet loss, Jitter, and Latency
According to Kumar, the first point of these 3 metrics is a practical choice for monitoring VPN Tunnels. So it is not surprising that most SD-WAN vendors have built-in support for collecting and reporting for this metric. Modern network monitoring solutions must put context on this metric by combining it with application path analysis. Not only that, strengthen the overall monitoring strategy by adding predictive capacity analysis by informing the operations team, which applications may experience decreased performance due to network congestion.
Topology
The second point, Kumar said in his article that network monitoring solutions should include end-to-end topology visualization of all network components. There are two types of topologies. The first type of topology is the traditional physical topology that outlines connected servers, switches, routers, SD-WAN devices. The second type of topology is the flow topology above the physical layer which will be very useful for operations teams. This topology can also show path changes or link aggregation for more detailed monitoring.
Active Path Testing
This third point is a proactive measure to detect bottlenecks and mitigate performance issues on SD-WAN. If your SD-WAN vendor has built-in support for this feature, then your network monitoring solution should take advantage of it and correlate the test results with the first two recommendations above. The advantage is that this active path testing can detect issues outside of normal business hours when there is no application traffic and has the ability to emulate real application traffic.
Source:
https://www.ca.com/en/blog-itom/top-3-strategies-for-successful-sd-wan-monitoring.html
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