L2 extention through IP in the data center (MAC-in-IP)

The correct answer is D. Vxlan. VXLAN (Virtual Extensible LAN) is the MAC-in-IP technology: it encapsulates full Ethernet frames (including MAC addresses) inside UDP/IP packets on port 4789, enabling Layer 2 network extension across Layer 3 IP infrastructure. TRILL (Transparent Interconnection of Lots of…

Advanced Data Center Networks

Question

Options

Afiberpath
BTRILL
COTV
DVxlan

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(58 responses)

A
3% (2)
B
2% (1)
C
5% (3)
D
90% (52)

Explanation

VXLAN (Virtual Extensible LAN) is the MAC-in-IP technology: it encapsulates full Ethernet frames (including MAC addresses) inside UDP/IP packets on port 4789, enabling Layer 2 network extension across Layer 3 IP infrastructure. TRILL (Transparent Interconnection of Lots of Links) is an IS-IS-based L2 routing protocol that runs on the same physical network. FabricPath is Cisco's proprietary TRILL implementation. OTV also extends L2 over IP but uses its own overlay encapsulation format; 'MAC-in-IP' as a descriptor maps most precisely to VXLAN in Cisco exam contexts.

Topics

#VXLAN#MAC-in-IP#L2 extension#data center overlay

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