Which VXLAN component is used to encapsulate and decapsulate Ethernet frames?

Question

Options

• AVNI
• BGRE
• CVTEP
• DEVPN

• A
  6% (1)
• B
  6% (1)
• C
  88% (15)

Explanation

VTEP (VXLAN Tunnel Endpoint) is the component responsible for encapsulating outgoing Ethernet frames into VXLAN packets (adding the UDP/IP/VXLAN headers) and decapsulating incoming VXLAN packets back into standard Ethernet frames - making it the "gateway" between the overlay and underlay networks.

Why the distractors are wrong:

• A. VNI (VXLAN Network Identifier) is simply a 24-bit segment ID used to identify and isolate individual VXLAN segments, not a mechanism for encapsulation.
• B. GRE (Generic Routing Encapsulation) is a completely separate tunneling protocol unrelated to VXLAN's encapsulation process.
• D. EVPN (Ethernet VPN) is a control-plane protocol often used with VXLAN for MAC/IP advertisement and VTEP discovery, but it does not perform encapsulation itself.

Memory Tip: Think of VTEP as a "tunnel post office" - just as a post office packages and unpackages mail for transport, the VTEP packages (encapsulates) Ethernet frames for VXLAN transport and unpackages (decapsulates) them at the destination. The "EP" in VTEP stands for Endpoint, reminding you it sits at each end of the tunnel doing the wrapping and unwrapping.

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