A Framework for OpenFlow-like Policy-based Routing in Hybrid Software Defined Networks

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.