If you need to monitor very large networks, you need powerful software. OpenNMS offers serious monitoring capabilities in a truly open source package.
Introduction OpenNMS is a free, Open Source, and world’s first enterprise grade network monitoring system that can be used to monitor tens of thousands of unlimited devices with a single...
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I'm having a lot of issues getting an Opennms instance to monitor and graph data via snmp for a Java instance on a different server. All the snmp stuff is configured correctly on the server, but importing the config into Opennms is a problem.