Customize polling

For more or clear information, I would like to use the attachment for asking the question for the alert threshold part.

If anyone have experiences on this, please share with me, thank you very much.

As shown in the attachment, the icmpOutMsgs value will vary from 2 to 6 from time to time. I would like to know how can I set alert threshold for trigger alert when it is less than 3 and reset alert when it is greater than 2?

I cannot choose this item in the tab of "Property To Monitor" in the "Configure Alerts" inside "System Manager", how can I make a threshold for this polling?

Or is it not possible to make threshold for this item which is added by using "Universal Device Poller" and is selected during the "Browse MIB Tree".

Hi Jasonyau,

You can use the advanced alerts to trigger UnDP.

This thread details how to setup a such alert.

As per what you detailed I would configure the trigger condition that way:

Trigger Alert when all of the following apply

Poller Name is equal to UnDP_Name

Poller Status is less than 3

And the reset condition like this:

Trigger Alert when all of the following apply

Poller Name is equal to UnDP_Name

Poller Status is greater than 2

HTH,

Yann

Hi Yann,

Thanks a lot.
But since I am new to Network Performance Monitoring, I have a question that what is UnDP_Name? Is it the "freeMem" in first attachment and the "icmpOutMsgs" in second attachment?

Or can I use the method mentioned in the link you given? I mean using

Trigger Alert when all of the following apply

OID is equal to 1.3.6.1.4.X.X.X

Poller Status is less than 3

Thank you very much.

Best regards,
Jason

Hi,

Is it the "freeMem" in first attachment and the "icmpOutMsgs" in second attachment?

Yes, exactly.

OID is equal to 1.3.6.1.4.X.X.X

I do not use the OID itself when I need to configure a custom Poller alert, I simply use the UnDP's name.

Here is how I would configure it for the icmpOutMsgs:

Dear Yann

Thanks a lot~

I will try it tomorrow for setting the condition without OID, thanks.

May I know the reason not using OID?
Is it not good because it may affect other property or else??

Thanks for sharing your valuable experience.

Best regards,
Jason

May I know the reason not using OID?

That just make it easier to read the alert when you need to troubleshoot it. You can compare that way of setting up alerts to DNS/IP addresses mapping.

Both values are from the CustomPollers table in the database. Using the OID or the name just affects the way the Adv. Alert wizard translates what you setup into the SQL Query that will run on the database.

Adv. Alerts are defined into the AlertDefinitions table if you wish to better understand the cogwheels.

HTH,

Yann

Dear Yann,

I see. It will certainly easier to read the alert when it is showing the name but not the OID, haha.
Thank you very much, I now know much more about that.

And I am now trying on configuration of the advanced alerts.
Thanks for your help. Thanks.

Best regards,
Jason