This paper describes the architecture of a prototype for an OpenFlow based multi-domain VPN service, which is built in the Community Connection (CoCo) project. The prototype that is being developed will let end-users set up CoCo instances (VPNs) via an easy to use web portal, without needing the help of network administrators to do manual configurations of the network switches. The CoCo prototy...

Migration is an important feature for network virtualization because it allows the reallocation of virtual resources over the physical resources. In this paper, we investigate the characteristics of different migration models, according to their virtualization platforms. We show the main advantages and limitations of using the migration mechanisms provided by Xen and OpenFlow platforms. We also...

The growth of bandwidth in computer networks fuels the constant adoption of measurement equipment and methodologies. Networking equipment offers processing capacity in the Terabit/s range nowadays. However, test equipment in academia lags behind. We propose FLOWer, a novel and cost effective approach capable of testing such high-speed devices. FLOWer combines an inexpensive software packet gene...

We present the design and implementation of a transparent and selective offload architecture, accelerating a mature software OpenFlow implementation (Open vSwitch) using a programmable network processor. Our design combines the flexibility offered by software OpenFlow implementations with the performance of specialised switch hardware. It is targeted at accelerating the emerging class of edge/g...

This seminar paper describes OpenFlow, a specification developed by a research group at Stanford University that is proposed to be implemented by commercial switches and routers and would allow remote control of their forwarding behavior. It is aimed at providing researchers with an inexpensive and flexible platform to experiment with new network protocols on productionscale traffic. OpenFlow i...

Information-centric Networking (ICN) has gained popularity lately due to increase in importance for content/information in current days. It is thus easier and cost effective to route based on information than on location as it is done in IP-based network. The advantages of ICN network can be combined with software defined network, which separates the control plane from the data plane, thus redu...

We describe a language-centric approach to solving the complex, low-level, and error-prone nature of network control. Specifically, we have designed a domain-specific language called Nettle, embedded in Haskell, that allows programming OpenFlow networks in an elegant, declarative style. Nettle is designed in layers to accommodate a family of DSLs targeted for specific network applications. The ...

Software-defined networking (SDN), and in particular networks based on an OpenFlow control plane, are expected to take significant share in upcoming deployments. Network programmability has emerged as a particularly desirable property for such new deployments, in which logically centralized software will be able to both control and manage operation. This paper focuses on one aspect of network m...

SDN deployments rely on switches that come from various vendors and differ in terms of performance and available features. Understanding these differences and performance characteristics is essential for ensuring successful deployments. In this paper we measure, report, and explain the performance characteristics of flow table updates in three hardware OpenFlow switches. Our results can help co...