Principles; Alarm Severity - Huawei AR150 Series Configuration Manual

Huawei AR150&200&1200&2200&3200 Series Enterprise
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Configuration Guide - Device Management
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4.2.2 Principles

When receiving alarms or events generated on the device, the fault management module stores
them based on the default severities, records the generation time.
After the fault management function is configured, you can:
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4.2.3 Alarm Severity

As defined in X.733, alarms are classified into six severities, as described in
value indicates a higher severity.
Table 4-1 Descriptions of alarm severities
Value
1
2
3
4
Issue 05 (2014-01-16)
Intermittent alarm:
If the interval between the generation time and clearance time of an alarm is shorter than
a specified value (called intermittent threshold that is specified based on the products and
alarms), the alarm is called an intermittent alarm. An intermittent alarm lasts a short time
of period from generation to clearance.
Flapping alarm:
If the number of times that an alarm on an object is generated in a specified period is larger
than the flapping threshold that is specified based on the product and alarm, the generated
alarms are called flapping alarms.
Event:
An event is anything that occurs on a managed object. For example, an object is added,
deleted, modified, or its status is changed.
Change the alarm severities on the device and configure filtering rules on the NMS to filter
out unnecessary alarms.
Enable the alarm or events reporting delay function to prevent alarms or events from being
reported repeatedly. When the alarm or event reporting delay period expires, only the last
alarm or events is reported.
Alarm correlation can identify root-cause and non-root-cause alarms. Non-root-cause
alarms are filtered out. The system reports only root-cause alarms to the NMS, improving
the efficiency for locating faults.
Severity
Critical
Major
Minor
Warning
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Description
Indicates that a fault affecting services has occurred and it
must be rectified immediately.
Indicates that services are being affected and related
measures need to be taken urgently.
Indicates that a fault occurs but does not affect services. To
avoid a minor alarm from getting severer, related measures
must be immediately taken.
Indicates that a potential or impending service-affecting fault
is detected before any significant effects have been felt. Take
corrective actions to diagnose and rectify the fault.
4 Fault Management Configuration
Table 4-1. A small
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