Leading state-of-the-art research facilities at the Universities of Edinburgh (UoE), Bristol (UoB), Lancaster (UoLan), King's College London (KCL) and Digital Catapult (DCAT) are interconnected through a dedicated...
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Leading state-of-the-art research facilities at the Universities of Edinburgh (UoE), Bristol (UoB), Lancaster (UoLan), King's College London (KCL) and Digital Catapult (DCAT) are interconnected through a dedicated JISC/JANET network infrastructure. Using Software Defined networking (SDN) and network function virtualisation (NFV) technologies, these distributed test-beds are integrated using a multi-domain NFV Orchestrator. This paper introduces a novel specialist distributed test-bed developed for facilitating the increasingly large and complex experimentation of future Internet system architectures, technologies, services and applications between the geographically dispersed laboratories across the UK. The aim is to enable students, researchers and enterprises to interconnect with and carry out remote experiments using these test-beds. Each one contributes a range of key capabilities for Internet research including optical networks, optical wireless and radio frequency communications, Internet of Things (IoT), SDN, NFV, as well as cloud computing technologies and services.
The ever increasing demand for computing resources has led to the creation of hyperscale datacentres with tens of thousands of servers. As demand continues to rise, new technologies must be incorporated to ensure high...
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ISBN:
(纸本)9781728169293
The ever increasing demand for computing resources has led to the creation of hyperscale datacentres with tens of thousands of servers. As demand continues to rise, new technologies must be incorporated to ensure high quality services can be provided without the damaging environmental impact of high energy consumption. virtualisation technology such as network function virtualisation (NFV) allows for the creation of services by connecting component parts known as virtual networkfunctions (VNFs). By optimising the placement and routing of VNFs this technique can be used to maximally utilise available datacentre resources, to maintain a high quality of service whilst minimising energy consumption. Current research on this problem has focussed on placing VNFs and considered routing as a secondary concern. In this work we argue that the opposite approach, a routing-led approach is preferable. We propose a novel routing-led algorithm and analyse each of the component parts over a range of different topologies on problems with up to 16000 variables and compare its performance against a traditional placement based algorithm. Empirical results show that our routing-led algorithm can produce significantly better solutions to large problem instances on a range of datacentre topologies.
The paper provides a framework for the definition and provision of performance in virtualised communication systems. For doing this, basic concepts and elements used in the performance provision in non-SDN/NFV network...
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ISBN:
(纸本)9781728156118
The paper provides a framework for the definition and provision of performance in virtualised communication systems. For doing this, basic concepts and elements used in the performance provision in non-SDN/NFV networking environments are used. Based on that, adequate performance frameworks can be defined, including relevant metrics and models, to be used in the development, deployment and operation of future Software Defined networking and network function virtualisation (SDN/NFV) environments.
In the world of service-oriented businesses the deployment of services is of utmost importance. On the Web, the service-oriented business has a major impact through Web Application Program Interfaces (APIs). In the fi...
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In the world of service-oriented businesses the deployment of services is of utmost importance. On the Web, the service-oriented business has a major impact through Web Application Program Interfaces (APIs). In the field of Web applications, majority of the applications run on the Web/Internet APIs. These APIs are dependent on architecture styles such as Representational State Transfer (REST) and Remote Procedure Call (RPC). Over a decade, REST is widely used for architectural style in API design followed by RPC. These styles are used extensively in various domains. This paper presents the survey of such APIs in the world of Software-Defined networks (SDN) and networkfunction Virtualization (NFV). The main contributions of the paper is to provide a ready reference for developing effective and efficient orchestration approaches towards micro services in SDN and NFV domains. The survey aims to help practitioners and researchers in this field to follow guidelines and standards for designing higher quality services.
Integrating joint networkfunction virtualization (NFV) and software-defined networks (SDNs) with digital televisions (TVs) into home environments, has the potential to provide smart TV services to users, and improve ...
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Integrating joint networkfunction virtualization (NFV) and software-defined networks (SDNs) with digital televisions (TVs) into home environments, has the potential to provide smart TV services to users, and improve their quality of experience (QoE). In this regard, this paper focuses on one of the next generation services so-called follow me service (FMS). FMS is a service offered by 5gNB to user equipments (UEs) in indoor environments (e.g., home), it enables its clients to use their smart phones to select media content from content servers, then cast it on the nearest TV set (e.g., living room) and continue watching on the next TV set (e.g., kitchen) while moving around the indoor coverage area. FMS can be provisioned by utilizing UEs geolocation information and robust mechanisms for switching between multiple 5G radio access technologies (RATs), based on the intelligence of the SDN/NFV intelligent home IP gateway of the Internet of Radio Light (IoRL) project paradigm. In view that the actual IoRL system is at its early development stage, we step forward by using Mininet platform to integrate SDN/NFV virtualization into 5G multi-RAT scenario and provide performance monitoring with measurements for the identified service. Simulation results show the effectiveness of our proposal under various use case scenarios by means of minimizing the packet loss rate and improving QoE of the home users.
network virtualization is envisioned to support flexible, cost effective and on-demand deployment of multiple Virtual networks (VNs) on a shared underlying infrastructure. A key challenge under the virtualization para...
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network virtualization is envisioned to support flexible, cost effective and on-demand deployment of multiple Virtual networks (VNs) on a shared underlying infrastructure. A key challenge under the virtualization paradigm is how to effectively and efficiently map the divergent VNs onto the shared infrastructure characterized by exhaustible resources. Given that the future services will be characterized by heterogeneity in terms of topology and QoS requirements, existing algorithms can not be flexibly adapted to deal with such requests with differing constraints and mapping objectives. In this regard, this paper proposes a Dynamic Programming Inspired Algorithm (DyPI-Algo), a generic algorithm for mapping virtual networks on a shared infrastructure. Simulation results reveal that the proposed algorithm is able to maximize acceptance ratio and load balancing. Additionally, the algorithm is able to maximise revenue by admitting requests of large size compared to the benchmark algorithms. Moreover, the algorithm is found to be scalable in terms of time complexity when increasing the size of the substrate network and requests. In addition, the paper proposes an Adjacency List based heuristic and a Brute-force algorithm as additional benchmark algorithms. Simulation results show that the proposed algorithms result into up to more than a 10% improvement in terms of acceptance ratio compared to the state of the art algorithms in some scenarios.
Among main targets of fifth generation and beyond networks, there are perceived availability of 99.999% and 'anytime anywhere' connectivity. That would allow future generation networks to fully support very se...
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ISBN:
(纸本)9781728136271
Among main targets of fifth generation and beyond networks, there are perceived availability of 99.999% and 'anytime anywhere' connectivity. That would allow future generation networks to fully support very sensitive governmental services such as military and emergency ones. However, verticals like complex border monitoring would require connectivity in places where there is no available access network. Thus, the deployment of mobile base stations and the design of a system, based on virtualisation (e.g. cloud radio access network) and satellite-based network function virtualisation, can promise to achieve the desired goals for the mentioned verticals. This paper investigates the possibility to implement cloud radio access network in a system based on mobile base stations and CubeSats (pico satellites), which host the virtual networkfunctions and the baseband processing. In particular, the investigation takes into account baseband functional split to study the feasibility of satellite-based cloud radio access network.
To provide an emergency communication infrastructure for rescue helpers and victims in the event of a disaster, the research project Virt04WMN proposes to utilise a Wireless Mesh network (WMN)-based disaster network. ...
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ISBN:
(纸本)9781728149202
To provide an emergency communication infrastructure for rescue helpers and victims in the event of a disaster, the research project Virt04WMN proposes to utilise a Wireless Mesh network (WMN)-based disaster network. The network is constructed from battery-supplied wireless outdoor routers. By integrating the concept of network function virtualisation (NFV), the network and service availability as well as their reliability are improved. For eliminating the singlepoint-of-failure of a centralised NFV orchestration the functionality of the NFV orchestration shall be distributed among the nodes in the WMN. For providing the best possible solution for a distributed NFV orchestration in a WMN-based disaster network, various requirements the orchestration must meet are defined and presented in this paper. The requirements are directly derived from the requirements of a WMN-based disaster network, which are also defined in this paper.
networkfunctions virtualisation (NFV) is a novel paradigm for softwarisation of networkfunctions that allows an operator to leverage large scale virtualisation to enhance availability and flexibility of typical netw...
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ISBN:
(纸本)9781538693766
networkfunctions virtualisation (NFV) is a novel paradigm for softwarisation of networkfunctions that allows an operator to leverage large scale virtualisation to enhance availability and flexibility of typical network and security services offered to end users. Virtual networkfunctions are proposed as an alternative to traditional hardware appliances, with the aim of reducing maintenance and upgrade costs and enhance the provisioning and on-demand placement of networkfunctions. Although promising, this paradigm introduces relevant challenges in the field of security, as the attack surface of a virtualised architecture is larger than a traditional hardware -based network platform. In fact, not only it is affected by both generic threats of virtualisation and networking domains, it also introduces new threats due to the combination of these domains. In this work, we propose the design of a centralized monitoring and reporting solution to assess the trustworthiness of a NFV infrastructure, named Trust Monitor. Moreover, we present an open-source prototype for the proposed solution, which is tailored for the Security-as-a-Service use case and integrated with a reference NFV framework.
Software Defined networking (SDN) and network function virtualisation (NFV) are transforming modern networks towards a service-oriented architecture. At the same time, the cybersecurity industry is rapidly adopting Ma...
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ISBN:
(纸本)9781450364485
Software Defined networking (SDN) and network function virtualisation (NFV) are transforming modern networks towards a service-oriented architecture. At the same time, the cybersecurity industry is rapidly adopting Machine Learning (ML) algorithms to improve detection and mitigation of complex attacks. Traditional intrusion detection systems perform signature-based detection, based on well-known malicious traffic patterns that signify potential attacks. The main drawback of this method is that attack patterns need to be known in advance and signatures must be preconfigured. Hence, typical systems fail to detect a zero-day attack or an attack with unknown signature. This work considers the use of machine learning for advanced anomaly detection, and specifically deploys the Apache Spot ML framework on an SDN/NFV-enabled testbed running cybersecurity services as Virtual networkfunctions (VNFs). VNFs are used to capture traffic for ingestion by the ML algorithm and apply mitigation measures in case of a detected anomaly. Apache Spot utilises Latent Dirichlet Allocation to identify anomalous traffic patterns in Netfiow, DNS and proxy data. The overall performance of Apache Spot is evaluated by deploying Denial of Service (Slowloris, BoNeSi) and a Data Exfiltration attack (iodine).
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