Abstract:
Software Defined Networks (SDNs) provide a centralized
view and allow extensive programmability of the network.
They separate the control and data planes opening up immense
scope in developing low cost control and management applications
to operate the network. Yet, network administrators are
ambivalent to revamp their entire network hardware to bring in
SDN-compatible switches. This leads to the need for developing
models for gradual adaptation of SDN technology. In this paper,
we present a framework which allows for policy implementations
based on all OpenFlow version 1.4 specified match fields, over
legacy Layer 3 devices. This would enable the legacy networks
to reap the benefits of SDN in an incremental, controlled and
consistent manner.