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Overlay transport virtualization

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Overlay transport virtualization (OTV) is a Cisco proprietary protocol for relaying layer 2 communications between layer 3 computer networks.

See also

Distributed Overlay Virtual Ethernet (DOVE)
Generic Routing Encapsulation (GRE)
IEEE 802.1ad, an Ethernet networking standard, also known as provider bridging, Stacked VLANs, or simply QinQ.
NVGRE, a similar competing specification
Shortest Path Bridging (SPB)
Virtual Extensible LAN (VXLAN)
Virtual LAN (VLAN)

External links

Cisco Overlay Transport Virtualization overview

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