2,175 research outputs found

    Case Study - IPv6 based building automation solution integration into an IPv4 Network Service Provider infrastructure

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    The case study presents a case study describing an Internet Protocol (IP) version 6 (v6) introduction to an IPv4 Internet Service Provider (ISP) network infrastructure. The case study driver is an ISP willing to introduce a new “killer” service related to Internet of Things (IoT) style building automation. The provider and cooperation of third party companies specialized in building automation will provide the service. The ISP has to deliver the network access layer and to accommodate the building automation solution traffic throughout its network infrastructure. The third party companies are system integrators and building automation solution vendors. IPv6 is suitable for such solutions due to the following reasons. The operator can’t accommodate large number of IPv4 embedded devices in its current network due to the lack of address space and the fact that many of those will need clear 2 way IP communication channel. The Authors propose a strategy for IPv6 introduction into operator infrastructure based on the current network architecture present service portfolio and several transition mechanisms. The strategy has been applied in laboratory with setup close enough to the current operator’s network. The criterion for a successful experiment is full two-way IPv6 application layer connectivity between the IPv6 server and the IPv6 Internet of Things (IoT) cloud

    Topology monitoring implementation of network management system in TWAREN hybrid network

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    TWAREN (TaiWan Advanced Research and Education Network)is a hybrid network composed of several types of networkservices including Layer1 (Light-path), Layer2 (VLAN, MPLSVPNand VPLS-VPN), Layer3 (research networks peering andtransit) and Layer7 (SSL VPN). To develop a networkmanagement system for such kind of hybrid networks, we mustfirstly be able to construct the physical network topology,therefore the logical network services can then be mapped and anaccurate monitoring and alarming system can be possible.However the automatic physical topology discovery is extremelyhard and complicated in the hybrid network. In this paper, wepropose our preliminary design on automatically detecting thehybrid network physical topology in TWAREN

    Automatic Intent-Based Secure Service Creation Through a Multilayer SDN Network Orchestration

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    Growing traffic demands and increasing security awareness are driving the need for secure services. Current solutions require manual configuration and deployment based on the customer's requirements. In this work, we present an architecture for an automatic intent-based provisioning of a secure service in a multilayer - IP, Ethernet, and optical - network while choosing the appropriate encryption layer using an open-source software-defined networking (SDN) orchestrator. The approach is experimentally evaluated in a testbed with commercial equipment. Results indicate that the processing impact of secure channel creation on a controller is negligible. As the time for setting up services over WDM varies between technologies, it needs to be taken into account in the decision-making process.Comment: Parts of the presented work has received funding from the European Commission within the H2020 Research and Innovation Programme, under grant agreeement n.645127, project ACIN

    SimulCity: Planning Communications in Smart Cities

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    [EN] Communication networks have become a critical element in the development of smart cities. The information flows generated by thousands of sensors and systems must be managed to assure the adequate guarantees of quality, availability, and security. This paper introduces the SimulCity tool, which assists in the design of a smart city's communications convergent network. SimulCity allows a flexible simulation of different scenarios where multiple heterogeneous sources of human type communications (HTCs) and machine type communications (MTCs) compete for limited bandwidth resources. SimulCity evaluates the impact of new services on the performance of a municipal communications network and, consequently, assists the modification of network values to optimize bandwidth and reduce costs. Several network characteristics can be easily configured in SimulCity, such as the definition of traffic sources, the parametrization of different network mechanisms, access admission control, quality of service (QoS), and traffic in the multiprotocol label switching (MPLS) network. SimulCity was used to simulate different projects in the smart city of Valencia (Spain). Specifically, SimulCity was used to study the impact on the Valencia City Council's communications network of several new services: the solid waste collection supervision, the street lighting management, the control of regulated parking areas, and the upgrade of voice and video communications systems of the city government buildings. The results obtained have allowed the analysis of the impact that these new services have on the existing network and to perform an adequate dimensioning of the future municipal communications network.This work was supported in part by the Spanish Government under Project TIN2013-47272-C2-1-R and Project TEC2015-71932-REDT, and in part by the ITACA Institute Ayudas 2019Rodríguez-Hernåndez, MA.; Gomez-Sacristan, Á.; Gomez-Cuadrado, D. (2019). SimulCity: Planning Communications in Smart Cities. IEEE Access. 7:46870-46884. https://doi.org/10.1109/ACCESS.2019.2909322S4687046884
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