Which statement about VXLAN is true?

A. VXLAN encapsulates a Layer 2 frame in an IP-UDP header, which allows Layer 2 adjacency across router boundaries.
B. VXLAN uses the Spanning Tree Protocol for loop prevention.
C. VXLAN extends the Layer 2 Segment ID field to 24-bits, which allows up to 4094 unique Layer 2 segments over the same network.
D. VXLAN uses TCP as the transport protocol over the physical data center network.

Which statement about VXLAN is true?

A. VXLAN encapsulates a Layer 2 frame in an IP-UDP header, which allows Layer 2 adjacency across router boundaries.
B. VXLAN uses the Spanning Tree Protocol for loop prevention.
C. VXLAN extends the Layer 2 Segment ID field to 24-bits, which allows up to 4094 unique Layer 2 segments over the same network.
D. VXLAN uses TCP as the transport protocol over the physical data center network.

Correct Answer: A

VXLAN stands for Virtual Extensible LAN, which is a technology based on either MAC-in-IP or IP-in-IP encapsulation. It utilizes UDP/4789 as the transport protocol. In VXLAN, the Virtual Network Identifier (VNID) has been expanded to support 16.7 million identifiers, corresponding to a 24-bit field. VXLAN no longer relies on the Spanning Tree Protocol (STP) for loop avoidance.