Managing NFV using SDN and control theory

Control theory and SDN (Software Defined Networking) are key components for NFV (Network Function Virtualization) deployment. However little has been done to use a control-theoretic approach for SDN and NFV management. In this paper, we describe a use case for NFV management using control theory and SDN. We use the management architecture of RINA (a clean-slate Recursive InterNetwork Architecture) to manage Virtual Network Function (VNF) instances over the GENI testbed. We deploy Snort, an Intrusion Detection System (IDS) as the VNF. Our network topology has source and destination hosts, multiple IDSes, an Open vSwitch (OVS) and an OpenFlow controller. A distributed management application running on RINA measures the state of the VNF instances and communicates this information to a Proportional Integral (PI) controller, which then provides load balancing information to the OpenFlow controller. The latter controller in turn updates traffic flow forwarding rules on the OVS switch, thus balancing load across the VNF instances. This paper demonstrates the benefits of using such a control-theoretic load balancing approach and the RINA management architecture in virtualized environments for NFV management. It also illustrates that GENI can easily support a wide range of SDN and NFV related experiments

Adaptive Routing Using SDN and NFV

Title from PDF of title page viewed January 31, 2018Thesis advisor: Deepankar MedhiVitaIncludes bibliographical references (pages 35-37)Thesis (M.S.)--School of Computing and Engineering. University of Missouri--Kansas City, 2017In recent times, the primary focus of every ISP is to deliver high quality of service for multimedia applications. Due to ever-increasing network traffic, it is challenging for ISPs to accomplish optimal network conditions. To achieve high-quality services implementation of network monitoring and QoS routing algorithm is inevitable. Also, several modifications occur while network planning especially in managing physical devices to host network services required to achieve QoS routing. Dynamic routing in physical network hardware is not suitable for cost effective business models. Therefore, to lower operational and capital expenditure, we propose a technique called adaptive routing managed with the support of SDN (Software Defined Networking and NFV (Network Function Virtualization). We introduce an economical routing model which will assist in meeting the demands of the consumers and at the same time provide significant savings in product cost and usability. To perform adaptive routing, we designed a topology in a virtualized environment. We programmed RINA (Recursive InterNetwork Architecture) for SDN management which acts as a steady northbound API. To implement NFV, we hosted Intrusion detection service(IDS) as a Virtual Network Function (VNF). We created two scenarios where we execute shortest path routing and adaptive routing. To compare these different routing scenarios, we ran a client-server DASH (Dynamic Adaptive Streaming over HTTP) application. Furthermore, we injected Iperf traffic into the network categorized as unwanted traffic. Lastly, we performed adaptive routing applying control theoretic technique with the help of SDN and NFV. By comparing two routing scenarios, we observed a notable difference in throughput for DASH application.Introduction -- Literature survey -- Methodology -- Experimental setup -- Results -- Conclusio

Multi-layer virtual transport network design and management

Nowadays there is an increasing need for a general paradigm that can simplify network management and further enable network innovations. Software Defined Networking (SDN) is an efficient way to make the network programmable and reduce management complexity, however it is plagued with limitations inherited from the legacy Internet (TCP/IP) architecture. On the other hand, service overlay networks and virtual networks are widely used to overcome deficiencies of the Internet. However, most overlay/virtual networks are single-layered and lack dynamic scope management. Furthermore, how to solve the joint problem of designing and mapping the overlay/virtual network requests for better application and network performance remains an understudied area. In this thesis, in response to limitations of current SDN management solutions and of the traditional single-layer overlay/virtual network design, we propose a recursive approach to enterprise network management, where network management is done through managing various Virtual Transport Networks (VTNs) over different scopes (i.e., regions of operation). Different from the traditional overlay/virtual network model which mainly focuses on routing/tunneling, our VTN approach provides communication service with explicit Quality-of-Service (QoS) support for applications via transport flows, i.e., it involves all mechanisms (e.g., addressing, routing, error and flow control, resource allocation) needed to meet application requirements. Our approach inherently provides a multi-layer solution for overlay/virtual network design. The contributions of this thesis are threefold: (1) we propose a novel VTN-based management approach to enterprise network management; (2) we develop a framework for multi-layer VTN design and instantiate it to meet specific application and network goals; and (3) we design and prototype a VTN-based management architecture. Our simulation and experimental results demonstrate the flexibility of our VTN-based management approach and its performance advantages

Testbed para el estudio de la virtualización de las funciones de red NFV

Diseñar y desplegar un testbed donde permita estudiar el comportamiento de NFV, generando una topología que evidencie el desempeño de las funciones de red virtualizadas.El presente trabajo de titulación presenta un Testbed para tecnología NFV con Open Source MANO (OSM), que es una plataforma de gestión y orquestación (MANO) de código abierto para redes virtualizadas. Esta plataforma proporciona los medios para gestionar y controlar funciones de red virtualizadas (VNFs) y servicios de red en un entorno virtual. Es así como, para este proyecto se utiliza OSM en combinación con las plataformas OpenStack y OpenDaylight, que permite crear un entorno de red más centralizado, el cual despliega y gestiona configuraciones de red complejas propias para la virtualización de las funciones de red. Por lo tanto, en este apartado se detalla una descripción general de alto nivel de cómo OSM, OpenStack y OpenDaylight pueden utilizarse para virtualizar funciones de red. Es decir, en primer lugar, se crea una VNF utilizando OSM. La creación de esta VNF es simple a través de plantillas predefinidas o cargando un paquete VNF existente. Seguidamente, la VNF se despliega sobre OpenDaylight, que proporciona la infraestructura y los recursos necesarios para ejecutar la VNF. Con OpenStack se logra gestionar la infraestructura de red y controlar el flujo de tráfico dentro de la red virtualizada, es decir, crear, gestionar y eliminar VNFs. Y por último con OSM se supervisa y gestiona la red virtualizada en su conjunto creada por VNFs. Por lo tanto, el testbed desplegado proporciona herramientas para proveer, supervisar y escalar funciones de red virtualizadas (VNFs) con los recursos de red, según sea necesario.Ingenierí