Most network devices are capable of sending out SNMP traps when certain events occur (this is not restricted to network equipment though).
Using the SNMP trap receiver in Opsview allows you to catch these events and process them in Opsview.
Please note that setting up and using SNMP traps is a complex task, and being familiar with the command line and SNMP tools in general is highly recommended.
Traps received by Opsview are evaluated based on the originating host, and if this host has an SNMP trap service check assigned to it, it will be evaluated based on the rules of the service check (a host can have multiple SNMP trap service checks, and each service check can have multiple rules).
To use SNMP traps in Opsview, we will need to configure ...