Cisco Systems 15454 14.7 External Alarms and Controls

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Cisco ONS 15454 Reference Manual, R7.0

78-17191-01

Chapter 14 Alarm Monitoring and Management

14.7 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.

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 History1 windows. Suppressed

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.

Caution Use alarm suppression with caution. If multiple CTC or TL1 sessions are open, suppressing the alarms

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.

You can provision each alarm input separately. Provisionable characteristics of external alarm inputs

include:

• Alarm Type—List of alarm types.

• Severity—CR, MJ, MN, NA, and NR.

• Virtual Wire—The virtual wire associated with the alarm.