3Com 3C15500 - Network Director - PC, Руководство пользователя

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Key Considerations 383
Figure 191 Events List Window - Bottom Status Bar
To refresh the Events list fully, select View > Refresh and do not stop the
update.
Filter Has Excluded All Events
The currently configured filter may be filtering out all events in the events
database.
This situation is indicated in an identical manner to when the Events list
update was stopped, with the status bar at the bottom of the Events
window indicating that there are events in the database, but that you are
viewing none of them.
To change the filter, select Edit > Filter to launch the Filter dialog box. You
will need to use a less restrictive filter in order to view the events.
For example, if you are currently filtering for events logged in the last day
and no events are visible in the
Events list then changing this to filter for
events logged in the last 5 days will extend the scope of the filter and so
is more likely to match one or more events in the database. See
“Filter
Dialog Box” on page 339 .
No Graph Available
for an Event
In order for graphs to be generated for monitor-based events, 3Com
Network Director must be configured to both maintain monitor histories
and store historical monitor state before and after events.
If you disable either of these options then graphs will be unavailable for
any events generated while this feature is disabled, and the
Graph tab in
the More Detail dialog box for such events will show an error message.
To check the state of these two options, and to re-enable them if they are
disabled, launch the
Tools > Options dialog box and open the Logging
tab: