350-401 · Question #1266
What is a characteristic of VXLAN?
The correct answer is A. It uses VTEPs to encapsulate and de-encapsulate frames.. VXLAN is a network virtualization technology that uses VXLAN Tunnel Endpoints (VTEPs) to encapsulate and de-encapsulate Layer 2 Ethernet frames into UDP packets for transport over an IP network.
Question
What is a characteristic of VXLAN?
Options
- AIt uses VTEPs to encapsulate and de-encapsulate frames.
- BIt has a 12-bit network identifier.
- CIt uses TCP for transport.
- DIt extends Layer 2 and Layer 3 overlay networks over a Layer 2 underlay.
How the community answered
(28 responses)- A93% (26)
- B4% (1)
- D4% (1)
Why each option
VXLAN is a network virtualization technology that uses VXLAN Tunnel Endpoints (VTEPs) to encapsulate and de-encapsulate Layer 2 Ethernet frames into UDP packets for transport over an IP network.
VXLAN relies on VTEPs, which are devices that perform the encapsulation of Layer 2 Ethernet frames into VXLAN headers and UDP, and then de-encapsulation at the destination, allowing Layer 2 networks to be extended over Layer 3 infrastructure.
VXLAN uses a 24-bit network identifier (VNI), not a 12-bit identifier, allowing for a much larger number of virtual networks.
VXLAN uses UDP for transport, specifically UDP port 4789, not TCP.
VXLAN extends Layer 2 overlay networks over a Layer 3 underlay, not Layer 3 overlay networks.
Concept tested: VXLAN architecture and components
Source: https://www.cisco.com/c/en/us/products/collateral/switches/nexus-9000-series-switches/white-paper-c11-739721.html
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