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14.6.2 Alarms Suppressed by User Command
While the facility is in the OOS,MT 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 IS,AINS
administrative state, the AS-MT alarm is resolved in all three windows. Suppressed alarms remain raised
in the Conditions window until they are cleared.
14.6.2 Alarms Suppressed by User Command
In the Provisioning > Alarm Profiles > Alarm Behavior tabs, the ONS 15454 has an alarm suppression
option that clears raised alarm messages for the node, chassis, one or more slots (cards), or one or more
ports. Using this option raises the alarms suppressed by user command, or AS-CMD alarm. The
AS-CMD alarm, like the AS-MT alarm, appears in the Conditions, and History
conditions (including alarms) appear only in the Conditions window--showing their normal severity in
the Sev column. When the Suppress Alarms check box is unchecked, the AS-CMD alarm is cleared from
all three windows.
A suppression command applied at a higher level does not supersede a command applied at a lower level.
For example, applying a node-level alarm suppression command makes all raised alarms for the node
appear to be cleared, but it does not cancel out card-level or port-level suppression. Each of these
conditions can exist independently and must be cleared independently.
Use alarm suppression with caution. If multiple CTC or TL1 sessions are open, suppressing the alarms
Caution
in one session suppresses the alarms in all other open sessions.
14.7 External Alarms and Controls
External alarm inputs can be provisioned on the Alarm Interface Controller-International (AIC-I) card
for external sensors such as an open door and flood sensors, temperature sensors, and other
environmental conditions. External control outputs on these two cards allow you to drive external visual
or audible devices such as bells and lights. They can control other devices such as generators, heaters,
and fans.
You provision external alarms in the AIC-I card view Provisioning > External Alarms tab and controls
in the AIC-I card view Provisioning > External Controls tab. Up to 12 external alarm inputs and four
external controls are available. If you also provision the alarm extension panel (AEP), there are 32 inputs
and 16 outputs.
14.7.1 External Alarms
You can provision each alarm input separately. Provisionable characteristics of external alarm inputs
include:
•
•
•
•
Cisco ONS 15454 Reference Manual, R8.5
14-14
Alarm Type—List of alarm types.
User Defined Alarm Types
Severity—CR, MJ, MN, NA, and NR.
Virtual Wire—The virtual wire associated with the alarm.
Chapter 14
Alarm Monitoring and Management
1
windows. Suppressed
78-18106-01
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