OTV : Overlay Transport Virtualization
Overlay means you can apply one technology to an existing technology. OTV works with IP Address . Transport means Layer 2 traffic. Virtualization means Layer 2 clouds think they are in same domain but in reality they are far away geographically In short the term OTV means (Mac Address inside IP Address )
Why we use : Protecting your Data center from Disasters and move your all apps and data resources to different location without any interruptions. One Defected Data Center can damage other data center so to Avoid this action we use OTV.
How we Use :
Note: EOMPLS – VPLS – Dark Fiber