320CHAPTER 8: THE EVENT LOG

Events may be viewed from within the Events List window. This provides you with a powerful mechanism for interpreting the events on your network, allowing you to:

■Filter and sort the list of events, to enable you to focus on events of particular interest.

■Obtain more information on events that, for events that indicate abnormal network occurrences, includes possible causes and suggested resolutions to prevent the event from occurring in future.

■View recent and long-term history for the monitors that led to events that indicate abnormal network occurrences being generated.

■Control how events are generated and consolidated.

■Enable automatic notification of new events, via e-mail, pager, or various other means.

Event Types

There are three basic types of event that may be generated, depending upon the source that was used to generate the event. These are:

■monitor-based events

■SNMP trap-based events

■3Com Network Director internal events

Monitor-Based Events

Monitor-based events are generated as a result of an active monitor for a device or link entering a state that indicates an abnormal network condition.

When a monitor-based event is generated 3Com Network Director logs details of the state of the monitor in the time immediately before and after the event. You may view this historical state from within the More Details dialog box. See “Graphs Tab” on page 346.

For general information on configuring monitoring on your network see “Monitoring the Network” on page 273 and for more information on active monitoring in particular see “Monitoring Techniques” on

page 276.