What does a customer need to configure to create GENEVE backed segments using NSX-T Data Center?

Question

Options

• AVLAN Transport Zone
• BVirtual Distributed Switch
• CVirtual Standard Switch
• DOverlay Transport Zone

• A
  6% (2)
• B
  3% (1)
• C
  3% (1)
• D
  88% (28)

Explanation

Overlay Transport Zones (D) are required because NSX-T uses GENEVE encapsulation specifically for overlay networking - logical segments that tunnel traffic across physical infrastructure, decoupling virtual networks from the underlying hardware. Without an Overlay Transport Zone attached to your host transport nodes, NSX-T has no mechanism to establish the GENEVE tunnels (TEPs) needed to carry overlay segment traffic.

VLAN Transport Zones (A) are for VLAN-backed segments, which rely on physical VLAN tagging rather than GENEVE encapsulation - the opposite use case. Virtual Distributed Switch (B) and Virtual Standard Switch (C) are vSphere constructs for managing port groups and uplinks; while VDS is a prerequisite for NSX-T host preparation, neither switch type is what you configure to create GENEVE segments - that responsibility belongs to the Transport Zone.

Memory tip: Think "Overlay = Over the wire via GENEVE." If the segment floats over the physical network using tunneling, you need an Overlay Transport Zone. VLAN = physical tagging stays on the wire; Overlay = GENEVE lifts traffic above it.

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