Alarm management on
Huawei MA5800 includes the following functions: alarm record, and alarm setting. These functions help you to maintain the device and ensure that the device works efficiently.
Context
An alarm refers to the notification of the system after a fault is detected. After an alarm is
generated, the system broadcasts the alarm to the terminals, mainly including the NMS and
command line interface (CLI) terminals.
Alarms are classified into fault alarm and recovery alarm. After a fault alarm is generated at a
certain time, the fault alarm lasts till the fault is rectified to clear the alarm.
You can modify the alarm settings according to your requirements. The settings are alarm
severity, alarm output mode through the CLI.
When managing alarms on the GUI through the NMS, you can set filtering criteria to mask
unimportant alarms and events. Such filtering function facilitates the focus of the important
alarms and eliminates the load of the NMS.
Procedure
Clear alarms.
You can run the alarm active clear command to clear the alarms that are not recovered
in the system.
– When an active alarm lasts a long time, you can run this command to clear the
alarm.
– Before clearing an alarm, you can run the display alarm active command to query
the currently active alarms.
l Configure alarm level.
Run the alarm alarmlevel command to configure the alarm level.
– Alarm levels are critical, major, minor, and warning.
– Parameter default indicates restoring the alarm level to the default setting.
– You can run the display alarm list command to query the alarm level.
– The system specifies the default (also recommended) alarm level for each alarm.
Use the default alarm level unless otherwise required.
Configure alarm jitter-proof.
Run the alarm jitter-proof command to configure the alarm jitter-proof function and the
jitter-proof period.
– To prevent a fault alarm and its recovery alarm from being displayed frequently,
you can enable the alarm jitter-proof function to filter alarms in the system.
– After the alarm jitter-proof function is enabled, the alarm in the system is not
reported to the NMS immediately but is reported to the NMS after an alarm jitterproof
period.
– If an alarm is recovered in an alarm jitter-proof period, the alarm is not reported to
the NMS.
– You can run the display alarm jitter-proof command to check whether the alarm
jitter-proof function is enabled and whether the alarm jitter-proof period is set.
– By default, the alarm jitter-proof function is disabled. You can determine whether to
enable the function according to the running of the device.
l Set or shield the output of alarms.
Run the (undo) alarm output command to set or shield the output of alarms to the CLI
terminal.
– Setting the output mode of alarms does not affect the generating of alarms. The
alarms generated by the system are still recorded. You can run the display alarm
history command to query the alarms that are shielded.
– When the new output mode of an alarm conflicts with the previous mode, the new
output mode takes effect.
– The output mode of the recovery alarm is the same as the output mode of the fault
alarm. When the output mode of the fault alarm is set, the system automatically
synchronizes the output mode of its recovery alarm. The reverse is also applicable.
Filter alarms reporting to NMS.
Run the trap filter alarm condition command to filter alarms that the device reports to
the NMS through traps.
The filtering criteria can be alarm ID, alarm severity, alarm type, subrack ID, subrack ID/
slot ID, subrack ID/slot ID/port ID, VLAN interface, and NE.
To reduce alarms and avoid alarm storms, the system does not send alarms of some
Huawei ONT to the NMS. To query the filtering criteria of alarms and events in the system, run
the display trap filter command.
l Query alarm configuration.
Run the display alarm configuration command to query the alarm configuration
according to the alarm ID. The alarm configuration that you can query includes the alarm
ID, alarm name, alarm class, alarm type, alarm level, default alarm level, number of
parameters, CLI output flag, conversion flag, and detailed alarm description.
(Optional) Configure alarm policy for ONT.
In
Huawei FTTH scenarios, you can configure the ONT alarm policy profile to configure alarms
for different service policies.
