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

Страница: 329 / 924

Key Concepts 325
Event Suppression
Some networking technologies, such as Ethernet, are typically “bursty”.
In other words data rates can suddenly increase to very high levels for
very short periods of time before settling down again. Such spikes in data
rates are not problematic; they are the normal behavior that arises from
such technologies’ implementations.
The event suppressor prevents monitor-based events from being
generated by these spikes by only generating an event for a monitor that
enters an abnormal state and remains in that state for a certain period of
time or a specific number of polls.See
“Monitoring Techniques” on
page 276 for more information on active monitoring.
SNMP Trap Filtering
The SNMP trap filtering feature prevents events from being generated
from SNMP traps received from devices that have not been discovered in
the map. This allows the events system to be focused on only those
devices you are interested in.
Alerts The events system incorporates an alert system that allows actions to be
performed when a warning or higher severity event is generated for a
device or link. Alerts can be used to keep you up-to-date with the state of
your network when you are not at the PC running 3Com Network
Director, to automatically perform operations when events occur, or
simply to inform you of a new event if you are not currently viewing the
Events window.
There are various types of alert available:
Sound: Provides an audio notification of event generation on the PC
running 3Com Network Director.
Pop-up: Pops up a window providing details of an event that has been
generated.
Application: Launches any application or batch file, passing details of
an event that has been generated as command line parameters.
E-mail: Sends an e-mail containing details of a generated event.
Pager: Sends a pager message via a pager gateway containing details
of a generated event.