The VMware vDefend (NSX) architecture is strictly divided into distinct planes.
The Management Plane (hosted on the NSX Manager cluster) acts as the single point of entry for user interaction. It provides the graphical user interface (UI) and hosts the advanced REST API endpoint. Any automation script, orchestration tool (like Aria Automation or Terraform), or administrator configuring security policies must communicate directly with the Management Plane via API. The Management Plane then passes the intent to the Control Plane (which calculates the state) and ultimately down to the Data Plane (which actually drops or forwards the network packets).
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