User guide

5-22 ExtremeWare EPICenter Software Installation and User Guide
The EPICenter Alarm System
Deleting a category also deletes all the alarm definitions that are assigned to that
category. If you do not want to delete those alarm definitions, you must first modify
the alarm definitions to use a different alarm category before you delete the
category.
A warning message appears to let confirm that you want to delete the category and the
alarm definitions that are assigned to it. Click OK to delete the category and the alarms
from the EPICenter database.
The Default category cannot be deleted.
Event Configuration
TheEventConfigurationpageletsyoudefinetheconditionsorrulesthatwillcausecertain
trapevents tooccur, and specify the devices onwhich these rules should beconfigured.In
EPICenter 3.1, you can use this page to define how RMON and CPU utilization events
should be generated.
In the case of both RMON utilization and CPU utilization, events (traps) can be generated
basedoncomparingasamplevaluetoathresholdvalue.Therulesyousetupspecifywhat
these threshold values should be. Once these rules are in place, you can use them in your
EPICenteralarmdefinitionstocreatealarmsthatwilltakeactionswhenasamplevalue
crosses one of the thresholds you’ve defined.
There are several other SNMP traps supported by the EPICenter Alarm System that also
requireconditionstobesetontheswitchtodefinewhenatrapshouldoccur.See
“Configuring Other SNMP Trap Events” on page 5-38 for additional information.
In additionto specifying theconditionsunder whichtrapeventsshould begenerated,you
alsousethispagetodefinethetargetdevicesonwhichtheeventrulesshouldbe
configured.
Creating the rules that control trap (event) generation is only the first of the two
steps required to create EPICenter alarms for these events. Even though you have
set up these rules, the trap events generated as a result will be ignored by the Alarm
System until you define alarms that take actions on those events. See “Defining Alarms” on
page 5-8 for more information.
To view the current RMON and CPU Utilization rules, and to create new rules or modify
existing rules, click the Configuration tab at the top ofthe page. The Alarm System: