Default Configuration; Configuring Fault Management; Configuring Alarm Management - 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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4.3 Default Configuration

This section describes default parameter settings of the device.
Table 4-2 Default configuration of fault management
Parameter
Alarm reporting delay function
Alarm correlation analysis
Event reporting delay function

4.4 Configuring Fault Management

This section describes how to configure fault management.

4.4.1 Configuring Alarm Management

Alarm management includes setting alarm severities, alarm correlation suppression, and
enabling alarm reporting delay.
Issue 05 (2014-01-16)
1. If an alarm is considered as a root-cause alarm, it is suppressed for a period specified
by the fault time window.
2. If an alarm is considered as a non-root-cause alarm, it is suppressed for a period
specified by the fault time window of its parent alarm.
3. When the duration specified by the fault time window of the root-cause alarm expires,
the system sends both the root-cause and non-root-cause alarms.
4. If the clear alarm of a non-root-cause alarm is generated within the duration specified
by the fault time window, the system deletes them both.
5. If the clear alarm of a root-cause alarm is generated within the duration specified by
the fault time window, the system deletes them both.
6. If the root-cause alarm of an alarm is not generated within the duration specified by
the fault time window, the system considers this alarm as a root-cause alarm.
7. If the root-cause alarm of an alarm is generated within the duration specified by the
fault time window, the system considers this alarm as a non-root-cause alarm.
Alarm correlation suppression
When alarm correlation analysis is complete, an alarm carries an identifier indicating a
root-cause alarm or a non-root-cause alarm. Before sending an alarm to the SNMP agent,
the system checks whether NMS-based alarm suppression has been configured for non-
root-cause alarms.
– If so, the system filters out non-root-cause alarms and sends only root-cause alarms to
the NMS.
– If not, the system sends both root-cause alarms and non-root-cause alarms to the NMS.
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4 Fault Management Configuration
Default Setting
Enabled
Disabled
Enabled
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