Which technology extends Layer 2 LANs over any network that supports IP?

The correct answer is A. OTV. OTV (Overlay Transport Virtualization) extends Layer 2 Ethernet LANs across any IP-based transport network, including WANs and the Internet. It works by encapsulating Layer 2 Ethernet frames inside IP packets, allowing geographically separated data centers to share the same…

Advanced Data Center Networks

Question

Options

AOTV
BVSS
CvPC
DVLAN

How the community answered

(52 responses)

A
88% (46)
B
6% (3)
C
2% (1)
D
4% (2)

Explanation

OTV (Overlay Transport Virtualization) extends Layer 2 Ethernet LANs across any IP-based transport network, including WANs and the Internet. It works by encapsulating Layer 2 Ethernet frames inside IP packets, allowing geographically separated data centers to share the same VLANs without requiring a dedicated Layer 2 transport. This is commonly used for data center interconnect (DCI). VSS (B) combines two physical Cisco switches into one logical switch on the same site. vPC (C) allows dual-homed port channels to two switches. VLAN (D) is a logical segmentation technology within a local network, not a WAN extension mechanism.

Topics

#OTV#Layer 2 extension#overlay transport#data center interconnect

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