Troubleshoot an SNMP Node/SNMP Test Failed result in Orion Platform

Updated February 18, 2019

Overview

This article discusses how to troubleshoot an SNMP Node/SNMP Test Failed result in Orion.

Environment

All NPM versions

Steps

Pre-requisites

It may be that the user has done everything on the node to configure SNMP and still get the TEST FAILED result in Orion.

• Verify that you have restarted the SNMP service on the node after changing the community string (IF Required / Applied).
• Verify that you have disabled the Windows firewall on both the Orion and the Windows node you are trying to add (a Target Node).
• Verify you are able to ping the node from the Orion Server.
• Add a remote site node and make sure that the firewall rules/NAT are configured to allow SNMP traffic. This could be an issue when the firewall could block the SNMP traffic over the VPN for the remote site or not allow even pass through.
• Some firewall is required to enable ICMP/SNMP on an interface level. Even if you have configured SNMP, it should still be allowed on the interface level. (Below is an example from SonicWall Firewall )

  Do not use the @ sign in the SNMP community string. (© 2013-2015 Lindsay Hill, available at lkhill.com, obtained on April 11, 2017.)

  

Verify and isolate the issue for SNMP (communication) using SNMP Test Orion with Wireshark:

1. Install Wireshark on the Orion server.
2. Start capturing data with the required filter according to your Node IP.
   ip.addr == 192.XXX.XXX.XXX && udp.port == 161 (Click Apply) (Please Change the IP address according to your Node).
3. Go to the Orion page and try to add the node. You will get the Test Failed message:
   
4. Check Wireshark and verify the response from the node.
   Orion sends 3 requests and if no response is received from the node, you will get the Test Failed message.
   This is to confirm that Orion has not received any response back from the node and the Result is TRUE as Failure.
   

The requirement to pass the test

Orion Sent get-request 1.3.6.1.2.1.1.2.0 to determine the SNMP connectivity which responded by the Node with valid Information:

In the Response packet, the value should be returned in packet.

This should not be NULL. If there is no value returned in packet, the test will fail.

Make sure that the device setup has read access permit to the SNMP and interface features.

To run SNMPWALK for the node, see Run SolarWinds SNMPWalk.