Documentation forNetFlow Traffic Analyzer
Analyzing network traffic and bandwidth is a key capability of Hybrid Cloud Observability Advanced and is also available in a standalone module, NetFlow Traffic Analyzer (NTA). Hybrid Cloud Observability Advanced and NTA are built on the self-hosted SolarWinds Platform. 
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NetFlow event: interface index mapping used for a node

NTA informs you that a new device using interface index mapping has been added for monitoring in NTA.

Interface index mapping is being used for node [node name].

SNMP index is a value identifying a specific interface. Flows coming from this device are using different values than SNMP interface indexes and NTA thus needs to establish a relation between the interface index and the values included in these flows.