Extreme Networks EPICenter 6.0, Reference Manual

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The Alarm Definition Window
EPICenter Reference Guide
117
Defining the Basic Alarm Properties
On the Basic page, you define the event-related parameters of the alarm: its name, severity, the event
that triggers it, and so on. The fields in this window are defined as follows:
Name The name of the alarm as it will appear in the alarm log and (optionally) elsewhere. This
defines the variable alarmName.
Enabled Indicates whether the alarm is “turned on” or not. If you uncheck this box, the alarm
remains defined but is not operational.
Category The category assigned to this alarm. Select the category using the pull-down menu at the
end of the field (see
“Creating a New Alarm Category” on page 126 for more information).
This defines the variable alarmCategory.
Severity The severity of the alarm. Select one of the five severity levels from the pull-down menu
(normal, warning, minor, major, critical). This defines the variable alarmSeverity. The
severity level also determines the sound that is played as an audible alert.
Event Type The type of event (SNMP trap, RMON Trap Rising Alarm, RMON Trap Falling Alarm,
EPICenter, or Syslog message). This determines the list of events you can select in the
Event Name field. The event type is concatenated with the event name to define the
variable eventTypeName.
Event Name The specific event (trap) that should trigger this alarm. Select the event from the pull-down
list provided. The event name is concatenated with the event type to define the variable
eventTypeName.
For RMON Rising or RMON Falling trap types, pull-down list includes the configured
RMON rule names. RMON events (rules) must be configured under the Threshold
Configuration tab before they appear in the Event Name list. See
“Threshold Configuration”
on page 127 for information on defining RMON events.
See Appendix A , “Event Types for Alarms” for a description of the
EPICenter
and SNMP
events from which you can choose.
Pattern Matching on
Event Data You can specify that the alarm should be triggered only if the data provided with the event
matches a specific pattern. If you leave this unchecked, the default is “Don’t Care.”
Pattern matching is done on the contents of the eventData variable.
The pattern matching syntax uses regular expressions.
• You can use “*” or “%” (asterisk or percent) to match any sequence of zero or more
characters.
• “?” or “_” (question mark or underscore) can be used to match any one character.
• To match one of a set of characters, enclose the characters in brackets. For example,
[abcd] matches one of a, b, c, or d.
Message A message you specify that will be transmitted whenever the alarm occurs. By default, this
field contains the variable eventTypeName. You can delete this variable, add other variables
as provided in the variable pop-up list, and add your own text. For Syslog messages, use
the eventData variable to display the Syslog message.
Variables... A pop-up list that provides a list of variables you can select to include in the Message
field. See
Table 10 “EPICenter Alarm Variables” on page 118 for a definition of the Alarm
System variables you can use in the message field.
Repetitive occurrence
specification
(If event happens...) The required number of times an event must occur before an alarm is generated. You can
specify both the number of times the event must occur, and the time frame within which
these events must occur. This lets you filter out short-lived or non-repeatable events, and
define an alarm that will take action only if the triggering event occurs repeatedly within a
defined time frame.