300-320 · Question #479
Which technology you will use to connect 2x Data Centres and extend Layer 2 VLANs? (Choose two)
The correct answer is A. OTV B. VXLAN. Both OTV and VXLAN are technologies designed to extend Layer 2 VLANs across Layer 3 boundaries between data centers. OTV (Overlay Transport Virtualization) is a Cisco proprietary technology that creates a MAC-address-routing overlay across any IP transport to extend VLANs…
Question
Which technology you will use to connect 2x Data Centres and extend Layer 2 VLANs? (Choose two)
Options
- AOTV
- BVXLAN
- CFabric Path
- DIS-IS
How the community answered
(18 responses)- A89% (16)
- C6% (1)
- D6% (1)
Explanation
Both OTV and VXLAN are technologies designed to extend Layer 2 VLANs across Layer 3 boundaries between data centers. OTV (Overlay Transport Virtualization) is a Cisco proprietary technology that creates a MAC-address-routing overlay across any IP transport to extend VLANs between data centers while keeping failure domains isolated. VXLAN (Virtual Extensible LAN) is an IETF-standard encapsulation protocol that tunnels Layer 2 Ethernet frames inside UDP/IP packets, enabling VLAN extension across routed networks at massive scale. Fabric Path is a Layer 2 routing technology for within a single data center fabric. IS-IS is a Layer 3 routing protocol and does not extend Layer 2.
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