SNMP works on the assumption that a network management system submits a query, and a managed device returns an answer. There are four possibilities for this exchange: Get, GetNext, Set, and Trap. With Trap, SNMP traps are automatically sent from a device to a compatible receiver – without the receiver requesting them. This is not the case with Get and GetNext. With these commands, queries are performed manually. Set is not a traditional monitoring function. Read more