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Home > Success Center > User Device Tracker (UDT) > UDT - Knowledgebase Articles > Verify Layer 3 polling in UDT

Verify Layer 3 polling in UDT

Created by Eric Bryant, last modified by Brian O'Donovan on Oct 06, 2017

Views: 1,734 Votes: 3 Revisions: 6


This article describes how to check for Layer 3 polling and whether devices are added to UDT. 

Case use is if IP information missing from endpoints in UDT.


All UDT versions


Check to see if Layer 3 devices are added into UDT

  1. Go to Settings > UDT Settings > Manage Ports.
  2. Select Nodes from the menu. 
  3. If nodes do not appear, add them to UDT. Refer to Adding Orion Nodes to UDT.

Check for if Layer 3 polling is enabled

  1. Go to Settings > Manage Nodes.
  2. Select required node.
  3. Click Edit Properties.
  4. Verify that Layer 3 polling is selected.

Troubleshoot Layer 3 data

If Layer 3 data (IP Addresses) are not displayed in UDT, verify the following:

  • The device supports all OIDs.
  • The Layer 3 job exists for the node (UDT Job Status page).
  • The output of UDT Compatibility Checker (Layer 3 target), try all versions of SNMP protocol – if one of them succeeds, consider changing device' configuration.
  • Verify in UDT.Jobs log that the job completes successfully, and verify the job's duration and adjust timeout if necessary in UDT Advanced Settings page.
  • Verify in UDT.BusinessLayer log that the job's results are processed successfully
  • Connect to the device and verify the ARP table.


If you are finding that the Layer 3 polling option itself is being unchecked, you can read this article for more information.


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