300-320 · Question #545
An engineer is implementing VXLAN to extend layer 2 traffic at three geographically diverse data centers. Which feature is required at each data center to extend traffic?
The correct answer is A. VTEP. VXLAN (Virtual Extensible LAN) extends Layer 2 segments over an underlying Layer 3 IP network by encapsulating original Ethernet frames in UDP packets (destination port 4789). A VTEP (VXLAN Tunnel Endpoint) is the device or logical entity that performs this encapsulation and…
Question
An engineer is implementing VXLAN to extend layer 2 traffic at three geographically diverse data centers. Which feature is required at each data center to extend traffic?
Options
- AVTEP
- BVRRP
- CVLSM
- DVPLS
- EVRF
How the community answered
(26 responses)- A92% (24)
- B4% (1)
- C4% (1)
Explanation
VXLAN (Virtual Extensible LAN) extends Layer 2 segments over an underlying Layer 3 IP network by encapsulating original Ethernet frames in UDP packets (destination port 4789). A VTEP (VXLAN Tunnel Endpoint) is the device or logical entity that performs this encapsulation and decapsulation. Each data center requires at least one VTEP, which can be implemented on a physical switch, router, or hypervisor. VTEPs identify VXLAN segments using a 24-bit VNI (VXLAN Network Identifier), allowing up to 16 million isolated segments. VRRP is a gateway redundancy protocol, VLSM is an IP addressing technique, VPLS is a different L2 VPN technology, and VRF provides Layer 3 routing segmentation-none of these provide VXLAN encapsulation.
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