The deployment of hybrid wide-area OpenFlow networks is essential for the gradual integration of OpenFlow technology into existing wide-area networks. Integration is necessary because it is impractical to replace such wide-area networks with OpenFlow-enabled ones at once. On the other hand, the design, deployment, and operation of such hybrid OpenFlow networks are often conducted intuitively wi...

Stanford University proposed a new network switch model named OpenFlow for the research of network innovation. OpenFlow enables researchers to control the behavior of the network by managing flow table. NetMagic is an open network switching platform for the innovative research of next generation Internet architecture. This paper introduces OpenFlow and NetMagic briefly, and implements a customi...

As the most competitive solution for next-generation network, software-defined network (SDN) and its dominant implementation OpenFlow, are attracting more and more interests. But besides convenience and flexibility, SDN/OpenFlow also introduces new kinds of limitations and security issues. Of these limitations, the most obvious and maybe the most neglected one, is the flow table capacity of SDN...

The Internet has made great success and big progress. However, the network-layer of Internet and the network devices in Internet have been relatively stagnant. Few changes or improvements have been made in last forty years, which is a stark contrast to the prosperity of the application-layer of the Internet. OpenFlow aims to enable innovation for the network-layer and network devices, which dec...

In this demo we will demonstrate the possibility of using OpenFlow traffic measurements for link dimensioning purposes. Our solution runs on top of the Ryu OpenFlow controller and retrieves per-flow statistics metered at the OpenFlow switch. The statistics are obtained by using messages defined by the OpenFlow protocol. These statistics are then applied to a flowbased link dimensioning approach...

Recent efforts in software-defined networks, such as OpenFlow, give unprecedented access into the forwarding plane of networking equipment. When building a network based on OpenFlow however, one must take into account the performance characteristics of particular OpenFlow switch implementations. In this paper, we present OFLOPS, an open and generic software framework that permits the developmen...

Openflow provides a standard interface for separating a network into a data plane and a programmatic control plane. This enables easy network reconfiguration, but introduces the potential for programming bugs to cause network effects. To study OpenFlow switch behavior, we used Alloy to create a software abstraction describing the internal state of a network and its OpenFlow switches. This work ...