Extreme Networks EPICenter 6.0, Reference Manual

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Threshold Configuration
EPICenter Reference Guide
127
Modifying an Alarm Category
A small pop-up window appears and displays the current name of the category. Modify the name and
click
OK to enter the revised category into the Category List.
When an alarm category is renamed, all alarms assigned to that category are updated to use the new
category name.
Deleting an Alarm Category
CAUTION
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.
Threshold Configuration
Creating alarm definitions based on threshold events such as RMON utilization is a two-step process.
First you must define the rules that control trap (event) generation. Then, you use these rules to define
alarms for Rising or Falling threshold conditions.
The Threshold Configuration page lets you define the conditions or rules that will cause certain trap
events to occur, and specify the devices on which these rules should be configured. You can use this
page to define thresholds for RMON utilization or CPU utilization. You can configure RMON threshold
traps for a wide range of variables, but several (specifically port utilization, temperature, and STP
topology change) have been partially predefined to make the rule definition process easier.
In these types of events, traps are generated based on comparing the value of the sample variable with
a threshold value. The rules you set up specify the threshold values. Once these rules are in place, you
can use them in your EPICenter alarm definitions for alarms that respond when a sample value crosses
one of the thresholds you’ve defined. You must defined EPICenter alarms based on the threshold rules
you create; the trap events generated by threshold conditions will be ignored by the Alarm System until
you define alarms that take actions on those events. See
“Defining Alarms” on page 114 for more
information on creating alarms (known as RMON Trap Rising Alarms and RMON Trap Falling Alarms)
using threshold event rules.
To rename an alarm category, click the Modify button at the top of the window.
To delete an alarm category, select the category from the Category List, then click the Delete
button at the top of the window.