Diagnostics
ROS™ v3.5 238 RS400
12.1.1 Active Alarms Active alarms are ongoing. They signify states of operation that are not in accordance with
normal operation. Examples of active alarms include links that should be up but are not or error
rates that are continuously exceeding a certain threshold.
Active alarms are removed (cleared) either by solving the original cause of the alarm or by
explicitly clearing the alarm itself.
12.1.2 Passive Alarms Passive alarms are historic in nature. They signify events that represented abnormal conditions
in the past, and do not affect the current operational status. Examples of passive alarms include
authentication failures or error rates that temporarily exceeded a certain threshold.
Passive alarms are cleared through Clear Alarms option under diagnostics menu. RMON
generated alarms are passive.
12.1.3 Alarms and the Critical Failure Relay All active alarms will immediately de-energize the critical fail relay (thus signifying a problem).
The relay will be re-energized when the last outstanding active alarm is cleared.
Note: Alarms are volatile in nature. All alarms (active and passive) are cleared at startup.
12.1.4 Viewing and Clearing Alarms Alarms are displayed in the order in which they occurred, even if the real time clock was
incorrect at the time of the alarm.
Figure 166: Alarm Table
Level
Synopsis: { EMRG, ALRT, CRIT, ERRO, WARN, NOTE, INFO, DEBG }
Severity level of alarm:
EMERG - Device has had a serious failure that caused a system reboot
ALERT - Device has had a serious failure that however didn't cause a system reboot
CRITICAL - Device has a serious unrecoverable problem