System Components
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SmartEdge 1200 Router Hardware Guide
• Redundant controller cards and redundant file systems
• Redundant external timing sources, such as building integrated timing supply (BITS) or
synchronization supply unit (SSU), with internal timing if both sources should fail
Alarms
The SmartEdge 1200 router supports three levels of alarms—critical, major, and minor:
• A critical alarm alerts the operator to a severe, service-affecting condition. It requires immediate
corrective action, regardless of time; for example, a fire.
• A major alarm alerts the operator to a service-affecting hardware or software condition, such as a
serious disruption of service, or the malfunction or failure of important circuits. It requires immediate
corrective attention and the response of a service engineer; for example, a link failure.
• A minor alarm alerts the operator to a condition that does not have a serious affect on service or on
circuits that are not essential to network operation; for example, a carrier line problem for which
transmission has been switched to another line.
System Status
The system LEDs are located on the fan tray. These LEDs include status indicators for each of the chassis
power sources (A1, A2, B1, and B2), alarms (critical, major, and minor), fan status and ACO status, and an
alarm cutoff (ACO) button. The ACO button provides one means of silencing an audible alarm; pressing
the ACO button silences an audible alarm and lights the ACO LED; pressing the button again turns off the
ACO LED and, if the alarm condition has not been corrected, sounds the alarm.
System Components
This section describes the following system components:
Note
Protection for cards and ports is configurable on a per-port basis; a mix of protected and
unprotected ports is supported. Protection features and the types of ports that support APS
depend on the release of the software.
Note
Support for the ACO button depends on the release of the SmartEdge OS.
