Datasheet

14-15
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 14 Alarm Monitoring and Management
14.6.2 Alarms Suppressed by User Command
14.6.2 Alarms Suppressed by User Command
In the Provisioning > Alarm Profiles > Alarm Behavior tabs, the ONS 15454 SDH 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
1
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 this card 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 > Card > External Alarms tab.
Provision controls in the AIC-I card view Provisioning > Card > External Controls tab. Up to 16 external
alarm inputs and 4 external controls are available with the AIC-I card.
14.7.1 External Alarm Input
You can provision each alarm input separately. Provisionable characteristics of external alarm inputs
include:
• Alarm type, from a list of possibilities in a drop-down list
• Alarm severity (CR, MJ, MN, NA, and NR)
• Alarm-trigger setting (open or closed): Open means that the normal condition is no current flowing
through the contact, and the alarm is generated when current does flow; closed means that normal
condition is to have current flowing through the contact, and the alarm is generated with current
stops flowing.
• Virtual wire associated with the alarm
• CTC alarm log description (up to 63 characters)
Note If you provision an external alarm to raise when a contact is open, and you have not attached the
alarm cable, the alarm will remain raised until the alarm cable is connected.