SNMP Monitoring
Iotellect Network Manager provides monitoring for virtually any kind of SNMP-compliant network devices. Polling- and event-based monitoring approaches are supported using SNMP get operations and traps respectively. Complementing each other, these monitoring technologies are essential for a reliable monitoring strategy.
SNMP polling lets you obtain all the metrics you need from the managed item. In periodic polling, information is obtained with a lag caused by the polling interval. This may reduce monitoring accuracy and response rates. Events can help to fix that: as soon as manager gets a notification about a certain event, it can request a fresh information needed to handle the event. On the other hand, event gives only a limited information about certain aspect of managed item's life. Furthermore, events implemented as SNMP traps are not guaranteed to be delivered to manager. Thus, the best strategy is to poll the values related to a certain event when a manager receives notification, and perform 'full' poll periodically. By using periodical polling and events together you can gain the needed combination of accuracy, speed, reliability and efficient utilization of network and computational resources.
This chapter covers the utilization of SNMP polling and traps in context of Iotellect Network Manager, followed by a section describing how this information can be further processed and analysed.
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