Symmetricom SSU-2000 User Manual page 33

All Alarm indications clear when the condition(s) that caused them no longer exist.
In a case where a module in alarm is unplugged from the system, a command must
be issued to clear the module's active alarms. In addition, normal operating status is
indicated by green LEDs on the modules.
Events are conditions within the unit, or at the interfaces of the unit, which may
indicate abnormal operation or a change in the unit's operational status. Recurring
events may be escalated to alarm status and may require action by the user.
Conversely, alarms may be de-escalated and corrected automatically. See the
SSU-2000 Technical Reference for details.
Although every alarm is considered to be an event, not every event is an alarm. For
example, a login is recorded as an event but is not considered to be an alarm. In
this case, no action is required by the user.
Ignore Mode
IGNORE means that appropriate information on the event is transmitted on all of the
communications ports when the event occurs, and on demand, but no alarm is
generated. For example, the status of the SSM at each input port and at the output
ports is reported when it changes and when the user sends an inquiry but no alarm
is generated.
Report Mode
The REPORT mode option is used to report alarm indications only.
An ALARM command is available in the SSU-2000 that allows a user to view the
current status of alarm indications on the unit and set alarm delay intervals and
activation levels. Only active alarm indications are displayed unless an option is
specified.
The DELAY option sets the length of time in seconds an alarm must be active
before generating a hardware indication. This option also allows the user to set the
level of any alarms:
IGNORE – ignore any alarm indication
REPORT – report only alarm indications
MINOR – sets alarm level to MINOR
MAJOR – sets alarm level to MAJOR
CRITICAL – sets alarm level to CRITICAL
See the SSU-2000 Technical Reference for information on the DELAY option.
Alarm Mode
The user sets an alarm to one of three levels of alarm severity: MINOR, MAJOR or
CRITICAL. In general, events which are classified as ALARMS are those for which
user intervention is required. MINOR and MAJOR alarms can be elevated
automatically to the next higher level after a user-set time period.
12713020-002-2 Revision F.01 – January 2007
Chapter 1 Product Overview
System Architecture
SSU-2000 User's Guide 33