RuggedCom RS400 用户手册

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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