Administrators monitor key network connections to detect issues (e.g., congestion) at an early stage. The Simple Network Management Protocol (SNMP) is often used for this purpose to query the metrics of the network interfaces. The measured values can be visualized as time series diagrams, and the user can define threshold values that trigger notifications if exceeded.
What happens, though, when the admin is notified? A quick look at the time series chart reveals that the network connection is busy, but this doesn’t tell you which conversations and which applications are using the connection. Information from flows can fill this gap. Today, many network devices let you export this kind of information, but the opportunity often remains unused.
In this article, we look into the use of OpenNMS Horizon and monitoring…
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ADMIN Network & Security (Digital) - 1 Issue, September/October 2023