A Web Service- and ForCES-based Programmable Router Architecture

Abstract. Programmable networks have accentuated the need for a clear separation of the control and forwarding planes. The IETF ForCES protocol allows control elements to be connected to logically separated forwarding elements. The FlexiNET IST project relies on dynamic service deployment, which requires router programmability in the control and/or forwarding planes. Moreover, to shorten the implementation and deployment time of control elements, there is a need for simple higher-level APIs that shield such elements from ForCES protocol and model details. This paper proposes a ForCES CE Gateway (ForCEG) architecture that fulfills these requirements and maps Web Service interfaces to ForCES messages while checking the validity of commands to ensure consistency of the router state. 1

Impact of Virtualization and SDN on Emerging Network Coding

IETF/IRTF draftInternet DraftNetwork Coding is a technique used to code packets and be able to recover coded packets from loses. It requires at least two participating nodes in the path of the packet, one to encode and another to decode. This document discusses the impact of virtualization and Software-Defined Networking (SDN) on the emerging network coding. This document also discusses the integration of network coding in various layers of the network stack and the APIs required from the network coding entity to program it from a controller

A Web-Services Based Architecture for Dynamic- Service Deployment

Abstract. Due to the increase in both heterogeneity and complexity in today’s networking systems, there arises a demand for an architecture for networkbased services, that gives flexibility and efficiency in the definition, deployment and execution of the services and at the same time, takes care of the adaptability and evolution of such services. In this paper we present an approach that applies a component model to GT4, a Web-service based Grid environment, which enables the provision of parallel applications as QoS-aware (Grid) services, whose performance characteristics may be dynamically negotiated between a client application and service providers. Our component model allows context dependencies to be explicitly expressed and dynamically managed with respect to the hosting environment, computational resources, as well as dependencies on other components. Our work can be seen as a first step towards a component-based programming-model for service–oriented infrastructures utilizing standard Web services technologies.