Event: An event is an occurrence or detection of some condition in or around the network. An event is a distinct incident that occurs at a specific point in time. Examples of events include: · Port status change · Device reset · Device becomes unreachable by the management station An event can also result from: · A fault that is an error, failure, or exceptional condition in the network. For example, when a device becomes unreachable, an unreachable event is triggered. · A fault clearing. For example, when a device state changes from unreachable to reachable, a reachable event is triggered. Alarm generated by NE and NMS: · By receiving notification events and analyzing them; for example, syslog and traps. · By automatically polling devices and discovering changes; for example, device unreachable. Alarm: An alarm is a NMS response to one or more related events. If an event is considered of high en