300-320 · Question #528
Multipath to two datacenter by L2 networks overlap addresses and must be work (2 answers)
The correct answer is A. vxlan B. OTV. Both VXLAN and OTV (Overlay Transport Virtualization) provide Layer 2 extension over a Layer 3 IP network between data centers, supporting overlapping IP address spaces because they operate at the MAC (Layer 2) level. VXLAN encapsulates full Ethernet frames inside UDP/IP…
Question
Multipath to two datacenter by L2 networks overlap addresses and must be work (2 answers)
Options
- Avxlan
- BOTV
- CVRF
- Dvpn
- EHSRP
How the community answered
(37 responses)- A54% (20)
- C24% (9)
- D14% (5)
- E8% (3)
Explanation
Both VXLAN and OTV (Overlay Transport Virtualization) provide Layer 2 extension over a Layer 3 IP network between data centers, supporting overlapping IP address spaces because they operate at the MAC (Layer 2) level. VXLAN encapsulates full Ethernet frames inside UDP/IP packets. OTV encapsulates L2 frames in an IP overlay to interconnect geographically distributed DCs. VRF provides Layer 3 network segmentation/isolation but does not extend L2. HSRP is a first-hop redundancy protocol for default gateway failover, not a DC interconnect solution.
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