2 Replies Latest reply on Jan 25, 2011 8:38 PM by chito

    Polling Interval Setting to Receive Node Down Event within 2 minutes

    chito

      I would like some advice about Polling Interval and Node Warning Level settings.

      Now, we try the following parameters:

      • Default Node Poll Interval : 60 seconds
      • ICMP Timeout : 1000 ms
      • Node Warning Level : 30 seconds

      The above setting takes about 4 minutes until the node status is changed from Up to Down.

      We would like to receive the notice within 2 minutes after the devices stop responding.

      To achieve the goal, do we have to set the shorter parameter as "Default Node Poll Interval "?

        • Re: Polling Interval Setting to Receive Node Down Event within 2 minutes
          Andy McBride

          Take a look at your poller completion. Depending on how many nodes you have you may be overtaxing the status poller. Take a look at Settings -> Details -> Polling Engines. If those are OK yau can reduce the warning time some. One problem is that you may start to get false positives for devices which become unreachable from PM for a short period of time. Ypu'll have to adjust the numbers and look for false positives or overloaded pollers.

            • Re: Polling Interval Setting to Receive Node Down Event within 2 minutes
              chito

              Hi Andy-san,

              Thank you for your advice.

              • Default Node Poll Interval : 60 seconds
              • Node Warning Level : 30 seconds

              In this case, it seems Orion NPM v10.0 handles as follows (in our environment):

              (Devices stop responding) --> ICMP Ping -- (60 seconds) --> ICMP Ping -- (60 seconds) --> Start Fast Polling (Node Status is Warning) -- (30 seconds = 10 seconds * 3 or 4 times) --> Node Status is Down.

              *It takes 2 minutes for Orion NPM  to change the node status from UP to Warning.

              If it were not for the second ICMP Ping, it would be easier for us to configure the  polling interval and the node warning level.