| MONITORING EDACS FAULT CONDITIONS |
8. MONITORING EDACS FAULT CONDITIONS
Fault Management is responsible for detecting, isolating, and reporting alarm or fault conditions affecting the various Managed Elements (ME) in the EDACS network.
8.1 DETECTING AND ISOLATING FAULTS (ALARMS)
Fault (alarm) or event status notification results from the Network Manager either receiving information from the EDACS platforms or as a response to polling. When an event is received the user is notified of the event through the Event Notification Interface or by changing the color of the appropriate icon on the hierarchical maps.
EDACS Fault Management tracks five
∙Normal An application sets the status to “normal” when the object is in a normal operational state.
∙Warning An application sets the status to “warning” when an object may face a potential problem.
∙Minor An application sets the status to “minor/marginal” when an object has a minor problem; this status should not, however, impede the normal use of the device.
∙Major An application sets the status to “major” when an object has serious problems; these problems are likely to impede normal use of the device.
∙Critical An application sets the status to “critical” when a device is not functioning or is not accessible by the EDACS Network Manager.
Table 1 lists the severity levels, descriptions, and associated colors. The severity levels and colors are configured according to HP OpenView Network Node Manager conventions. Each alarm received is tracked internally. The color of the icon does not change until all alarms received at that severity level have cleared, or an alarm at a higher severity level is received. For the EDACS Network Manager application, green icons indicate there are no known managed faults against the device represented by the icon.
Fault Management can periodically poll remote elements for missed traps. Elements on unlicensed nodes or sites will have Restricted status, and any corresponding traps will be ignored. Refer to FCAPS section in
8.1.1 Notification through the Event Notification Interface
Once an alarm is generated, it is logged into the Event Logs. After the event is logged, the alarm specifics are available through the Event Notification Interface. The Event Notification Interface includes the Event Categories window and the multiple Event Browser windows.
The Event Categories Window acts as an event notification window. The push buttons in this window light up to indicate when events have been received and have not been deleted from the Events Browser. The color of the push button reflects the most severe event in the category, or background color if no events are present. The “All Events” category contains all the events which are present in the other categories. The “EDACS Events” category is added by the Network Manager application software.
8.1.2 Notification Through Icon Color
After the Network Manager logs the event, it will change the appropriate map icon(s) color if necessary, and if enabled, display a popup window reporting the event and its severity.
Figure 8 - Event Category Window
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