Datasheet

14-14
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 14 Alarm Monitoring and Management
14.6 Alarm Suppression
Figure 14-3 Alarm Profile for an STM-1 Card
14.6 Alarm Suppression
The following sections explain alarm suppression features for the ONS 15454 SDH.
14.6.1 Alarms Suppressed for Maintenance
When you place a port in Locked,maintenance administrative state, this raises the alarm suppressed for
maintenance (AS-MT) alarm in the Conditions and History windows
1
and causes subsequently raised
alarms for that port to be suppressed.
While the facility is in the Locked,maintenance state, any alarms or conditions that are raised and
suppressed on it (for example, a transmit failure [TRMT] alarm) are reported in the Conditions window
and show their normal severity in the Sev column. The suppressed alarms are not shown in the Alarms
and History windows. (These windows only show AS-MT). When you place the port back into
Unlocked,automaticInService administrative state, the AS-MT alarm is resolved in all three windows.
Suppressed alarms remain raised in the Conditions window until they are cleared.
1. AS-MT can be seen in the Alarms window as well if you have set the Filter dialog box to show NA severity
events.