In a Cisco VXLAN based network, which of the following best describes the main function of a VXLAN Tunnel Endpoint (VTEP)?

Question

Options

• AA device that performs VXLAN encapsulation and decapsulation.
• BIt is a 24 bit segment ID that defines the broadcast domain.
• CIt is the Logical interface where the encapsulation and de-encapsulation occurs.
• DIt is a device that performs tunneling using GRE.

• A
  89% (24)
• C
  7% (2)
• D
  4% (1)

Explanation

VXLAN Tunnel Endpoint (VTEP) Explained

A VTEP (VXLAN Tunnel Endpoint) is the network device (physical or virtual) responsible for encapsulating outgoing Ethernet frames into VXLAN/UDP packets and decapsulating incoming VXLAN packets back into Ethernet frames - making Option A correct. Option B describes the VNI (VXLAN Network Identifier), which is the 24-bit segment ID defining the Layer 2 broadcast domain, not the VTEP itself. Option C confuses the VTEP with the NVE (Network Virtualization Edge) interface, which is the logical interface on the VTEP where encapsulation occurs - the VTEP is the device, not the interface. Option D is incorrect because VXLAN uses UDP encapsulation (port 4789), not GRE tunneling, which belongs to a different overlay technology.

Memory Tip: Think of a VTEP as a "VXLAN translator" - it sits at the edge of the VXLAN fabric and translates between regular Ethernet traffic and VXLAN-encapsulated traffic. If you remember "T = Translator/Terminator", you'll associate VTEP with the encapsulation/decapsulation function every time.

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