User's Manual

320 CHAPTER 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
.