Which two statements about VXLAN are true? (Choose two.)
Click on the arrows to vote for the correct answerA. B. C. D.
VXLAN (Virtual Extensible LAN) is a Layer 2 overlay technology that encapsulates Layer 2 Ethernet frames within Layer 3 UDP packets. VXLAN is used to extend Layer 2 networks over Layer 3 networks, allowing network administrators to create virtualized, multi-tenant networks that span physical data centers or cloud environments.
A. VXLAN uses a UDP destination port of 4987. This statement is false. The default UDP destination port for VXLAN is 4789. However, it's worth noting that VXLAN can be configured to use any UDP destination port.
B. A VTEP is a virtual or physical device that maps end devices to VXLAN segments. This statement is true. A VTEP (VXLAN Tunnel Endpoint) is a virtual or physical device that connects the physical network to the VXLAN overlay network. VTEPs perform VXLAN encapsulation and de-encapsulation and map end devices to VXLAN segments.
C. Devices that terminate VXLAN tunnels are known as VTEPs. This statement is true. VTEPs are responsible for terminating VXLAN tunnels and mapping end devices to VXLAN segments.
D. VXLAN adds an additional 32 bytes worth of headers. This statement is true. VXLAN adds an additional 50 bytes worth of headers to the original Ethernet frame, including a 24-byte VXLAN header, an 8-byte UDP header, and an 18-byte IP header. However, it's worth noting that VXLAN headers can be optimized to reduce the overhead of VXLAN encapsulation.
In summary, the correct answers to the question are B and C.