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Home > Success Center > ipMonitor > ipMonitor - Knowledgebase Articles > Troubleshoot SNMP communication from ipMonitor

Troubleshoot SNMP communication from ipMonitor

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Created by Chris Foley, last modified by Karen Valdellon_ret on Apr 27, 2017

Views: 1,022 Votes: 0 Revisions: 8


This article provides steps to verify if SNMP communication is successfully established between ipMonitor and the target system when you encounter the following:

  • ipMonitor discovery is finding very little to no resources.
  • You lost authentication or communication with half of the monitors.
  • You are getting false alerts.


  • All ipMonitor versions
  • All Windows versions


You can test SNMP connectivity from ipMonitor by requesting SysUptime from the remote system as this is supported by all SNMP-enabled systems. 

  1. On the ipMonitor web interface, click Devices > All Managed Devices.
  2. Click any device.
  3. Click Add > Add New Monitor.
  4. In the left-hand pane, click SNMP.
  5. In the right-hand pane, click Custom SNMP (Wizard), and check if the address and the SNMP community name of the system you want to monitor are correct.
  6. Click Next.

If this fails to provide SysUptime from the system, look at the following information:

  • Verify if the SNMP service is installed and running on the target system.
  • Verify that the SNMP community name you specified within the monitor matches the SNMP community name accepted by the target SNMP agent. The SNMP community is case-sensitive.
  • The SNMP agent on the target system has a list of systems that it will accept SNMP packets from. Verify that the ipMonitor system is on this list.
    Note: See Install and configure SNMP services for more information.
  • If something is blocking communication on port 161 over UDP, verify the configurations of any firewall which may exist between the ipMonitor system and the target system, including any firewall applications installed on these systems.



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