VTN Overview

OpenDaylight Virtual Tenant Network (VTN) is an application that provides multi-tenant virtual network on an SDN controller.

Conventionally, huge investment in the network systems and operating expenses are needed because the network is configured as a silo for each department and system. So, various network appliances must be installed for each tenant and those boxes cannot be shared with others. It is a heavy work to design, implement and operate the entire complex network.

The uniqueness of VTN is a logical abstraction plane. This enables the complete separation of logical plane from physical plane. Users can design and deploy any desired network without knowing the physical network topology or bandwidth restrictions.

VTN allows the users to define the network with a look and feel of conventional L2/L3 network. Once the network is designed on VTN, it will automatically be mapped into underlying physical network, and then configured on the individual switch leveraging SDN control protocol. The definition of logical plane makes it possible not only to hide the complexity of the underlying network but also to better manage network resources. It achieves reducing reconfiguration time of network services and minimizing network configuration errors.

 

Figure 13.1. VTN Overview

VTN Overview


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