Smart Polling in Guardian

Active sensor

Smart Polling on Guardian selects the sensor or sensors for execution based on the capture_devices field of the polled node. Smart Polling will engage the corresponding sensors. When at least one successful execution occurs from a sensor, Smart Polling remembers to use that sensor in future executions. If a future execution fails, or Smart Polling records no executions for more than a week, it reverts to the sensors in the capture_devices field.

To add a sensor to the applicable sensors for a node, you can use the Guardian command-line interface (CLI) to modify the capture_devices field. For example, to add an Arc to the applicable sensors for a node, use vi node 192.168.1.1 capture_device arc[1e6a174c], where 192.168.1.1 is the node identifier (ID) and the value in brackets is the first eight characters of the Arc sensor's ID. The manually added sensor is then added to the node's capture_devices list, and may be chosen according to the algorithm described above. If a node is only visible to Arc sensors but you want to use Guardian instead, use vi node 192.168.1.1 capture_device guardian.

The operating system (OS) of the sensor that polls the node decides which network interface to use based on the routing table. All Smart Polling strategies are based on the internet protocol (IP), which means that all routing decisions are delegated to the OS.