Network Management

How to check if the node is really down in Orion

Deep dive on the node is down the issue and what do the poller really collect during that time

First published date

12/4/2020 4:36 PM

Last published date

12/21/2022 2:45 PM

Overview

The alert regarding Node is down always trigger to the node
Understanding where to check it first and what cause the issue
Understanding the alert and there condition
Understand the polling of the status response time for the Node status

Product section

Orion Platform

Cause

N/A

Resolution

If you received an alert regarding Node is down, check your target server/device and see if it is Up, pingable, and able to remote
  • Go to the polling engine where the Node has been polled and try to do an ICMP ping if it is reachable or not most of the time; the Node is not reachable on the polling engine that is why it was marked as down. You have to check on your network team what happens or try to do a tracert from the polling engine going to the Node; on this process, you can see where the network stops reaching a specific subnet of your network report on your network team.
Understanding the alert condition must exist,
  • The alert has an enable condition that must exist for a specific time. Check the number of minutes and divide it on the status response time polling, and you will get how many times the polling engine poll the Node before sending an email or triggering an alert. Then go to the database manager and check the table "Response Time (View)" to find the Node ID. You will see how many times the poller attempts to do an ICMP on your device and how many times it failed. It should be equal to the poll number or more significant than that.
further information can be found here, 
Orion Node Statuses and Fast Polling Explained