Use this window to set advanced alarm settings. You can access the window from the Alarm Configuration view in the Suite options (Tools > Options > Suite).
Click areas in the window for more information.
Persistence Options
Use these options to prevent or troubleshoot Extreme Management Center performance problems caused by the number of current alarms being maintained. If you increase the maximum number of current alarms to maintain, you should be sure the server system can handle the increased load. The number of alarms to remove should be increased only if the maximum current alarms number is being exceeded too frequently.
Alarm Tracker Options
When you define an alarm with a limit, Extreme Management Center has to track whether the limit is exceeded, and when to reset the count. This option sets the maximum number of alarms that Extreme Management Center tracks. (An alarm limit specifies the number of times the alarm action is performed for an alarm.)
You can increase the number if you are sure the system can handle the increased load.
Alarm Dispatcher Options
Use these options to limit resources used by Extreme Management Center Alarm handling.
When alarms are triggered, they are moved into the Alarm queue for processing by the Alarm dispatcher. A specified number of alarms are taken from the queue and processed once each service period, according to the option values specified below.
- Alarm Queue Service Period (seconds)
- This controls how often the queue is checked for alarms to process. The dispatcher runs once every service period. So by default, the dispatcher processes alarms every 5 seconds.
- Max Alarms Serviced each Period
- The maximum number of alarms pulled from the queue for processing each service period. By default, the dispatcher processes 100 alarms every service period.
- Max Alarm Queue Size
- The maximum number of alarms that can be queued. By default, the dispatcher drops alarms after 5000 alarms are queued.
- Max Alarm Queuable in Service Period (per second)
- This limits the rate that alarms can be added to the queue (not processed from the queue) and protects the alarm engine against a large amount of alarms arriving too quickly. If alarms arrive at a rate that exceeds this amount, they are discarded.
Action Dispatcher Options
Use these options to limit resources used by Extreme Management Center Action handling.
After alarms are processed by the Alarm dispatcher, they are checked for an action. If an action is found, the alarm is moved into the Action queue for processing by the Action dispatcher. A specified number of actions are taken from the queue and processed once each service period, according to the option values specified below.
- Action Queue Service Period (seconds)
- This controls how often the queue is checked for alarms/actions to process. The dispatcher runs once every service period. So by default, the dispatcher processes alarms/actions every 5 seconds.
- Max Actions Serviced each Period
- The maximum number of actions pulled from the queue for processing each service period. By default, the dispatcher processes 100 actions every service period.
- Max Action Queue Size
- The maximum number of actions that can be queued. By default, the dispatcher drops actions after 1000 actions are queued.
- Max Actions Queuable in Service Period (per second)
- This limits the rate that actions can be added to the queue (not processed from the queue) and protects the alarm engine against a large amount of actions arriving too quickly. If actions arrive at a rate that exceeds this amount, they are discarded.
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