How does OpenNMS determine that multiple IP addresses belong to the same device?

Problem:
How does OpenNMS determine that multiple IP addresses belong to the same device?

Expected outcome:

OpenNMS version:

Other relevant data:

There are two ways to do the same.

1.Manually you can assign multiple IP addresses to the same node.
2.You are fetching the device details using SNMP. If so then Opennms will collect all the interfaces details of the node through SNMP.

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