Journal articles: 'ONOS'

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Romanov, O. I., I. V. Svyd, N. I. Korniienko, and A. O. Romanov. "Optical Network Management by ONOS-Based SDN Controller." Radiotekhnika, no. 210 (September 28, 2022): 188–96. http://dx.doi.org/10.30837/rt.2022.3.210.16.

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The possibilities to manage the optical network with a logically centralized SDN control plane based on the Open Network Operating System (ONOS) are investigated. The structure of the controller and its main functional blocks are considered ensuring the collection of information about the state of network elements, the solution of the main control tasks, interaction of control systems built on different technological bases, are considered. The role and place of the open network operating system in the controller structure are shown, the description of the ONOS multilevel architecture in the form of a set of functional modules is given, the purpose and functions of the ONOS subsystems are analyzed, protocols and interfaces making it possible to present the SDN network as a model are described. The peculiarity of the model is that the managed network can be represented as a set of virtual network functions. Therefore, the control process becomes independent of which vendor's equipment was used to build the network, as well as whether the network is built on real physical elements or virtual ones. Using the ONOS allows you to build a logical centralized control plane in the SDN networks. The existing set of functional modules, services and interfaces in the ONOS allows you to perform optical network management tasks. For the further development of the ONOS, it is necessary to develop mathematical models and methods for the optimal solution of control problems in various operating conditions, which will become application-level software modules in the future.

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Kartadie, Rikie, and Vertika Panggayuh. "FLOODLIGHT VS ONOS DALAM UNJUK KERJA." JIPI (Jurnal Ilmiah Penelitian dan Pembelajaran Informatika) 4, no. 2 (December 2, 2019): 111. http://dx.doi.org/10.29100/jipi.v4i2.1409.

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Kontroler yang secara langsung melakukan kontrol terhadap data path dari perangkat adalahÂ komponen utama dari Software-Defined Network (SDN). Kontroler bertanggung jawab untukÂ menentukan bagaimana menangani paket dan mengelola flow table (tabel flow) denganÂ menambahkan dan menghapus isi flow table melalui secure channel. Kontroler pada dasarnyaÂ memusatkan dan menjadi pusat kecerdasan jaringan, sedangkan jaringan mempertahankan dataÂ plane forwarding yang didistribusikan melalui Switch OpenFlow. Untuk alasan ini kontrolerÂ menyediakan antarmuka untuk mengelola, mengendalikan dan administrasi flow table SwitchÂ ini.Â PengujianÂ dilakukan untuk mengetahui tingkat throughput dan latency dari kontroler dan diujiÂ menggunakan cbance tool yang akan menguji pada protokol TCP dan UDP. PengujianÂ dilaksanakan dengan memaksa kontroler pada titik maksimal kemampuannyaÂ tanpa melakukan setingan tambahan (Setingan standar), sehinggaÂ diperoleh informasi yang tepat kemampuan dari kontroler yang akan digunakan. KarenaÂ kebutuhan ini, perlu di uji unjuk kerja dari kontroler yang digunakan. pada penelitian iniÂ pengujian dilakukan padaÂ kontroler floodlight dan ONOS.Â Dari hasil pengujian dapat dilihat bahwa kontroler floodlight lebih stabil dalam mengatasi beban switch dan host lebih baik dibandingkan dengan kontroler ONOS.

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Monika, Putri, Ridha Muldina Negara, and Danu Dwi Sanjoyo. "Performance analysis of software defined network using intent monitor and reroute method on ONOS controller." Bulletin of Electrical Engineering and Informatics 9, no. 5 (October 1, 2020): 2065–73. http://dx.doi.org/10.11591/eei.v9i5.2413.

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Software Defined Network (SDN) provides high service flexibility to optimize network configuration based on network traffic. Traffic management able to solve traffic density in SDN. However, it will misuse the network bandwidth and links. One variant of the SDN controller, namely Open Network Operating System (ONOS), provides an Intent Monitor and Reroute (IMR) method that can optimize traffic management based on the description of an object in the ONOS application. This method can optimize the network bandwidth and links of SDN. The IMR can monitor the network and reconfigure the network to restore network connectivity by maximizing the use of each link when transmitting data. This study examines the impact of using IMR with a custom topology on ONOS to find the best scenario by performing traffic management on a data plane consisting of switches totaling 8-12 switches. The parameters measured in this study are bandwidth usage and quality of service (QoS). The results obtained in this study are IMR able to optimize the use of each link and maximize bandwidth usage in a network when distributing data and following TIPHON standards

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Amiri, Esmaeil, Emad Alizadeh, and Mohammad Hossein Rezvani. "Controller selection in software defined networks using best-worst multi-criteria decision-making." Bulletin of Electrical Engineering and Informatics 9, no. 4 (August 1, 2020): 1506–17. http://dx.doi.org/10.11591/eei.v9i4.2393.

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Controllers are the key component of Software-defined Network (SDN) architecture. Given the diversity of open SDN controllers, the following question arises for the network administrators: How can we choose the appropriate SDN controller? Different characteristics of the controllers have greatly increased the complexity of the right decision. Multi-Criteria Decision-making Methods (MCDMs) is a family of robust mathematical tools to address complex problems regarding multiple objectives. In this paper, we study the most important features of SDN controllers. To this end, we compare the well-known SDN controllers including NOX, POX, Beacon, Floodlight, Ryu, ODL, and ONOS. Leveraging a novel MCDM technique called the Best–Worst Multi-criteria (BWM), we find the most appropriate SDN controller. We solve an optimization problem and evaluate its performance in terms of significant criteria such as throughput and latency. Initial evaluation revealed that the ONOS and ODL have the highest throughput, while the lowest throughputs belong to the NOX, POX, and Ryu. However, final evaluation concerning all criteria confirmed the robustness of the ONOS and the ODL compared to other controllers.

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Muqaddas, Abubakar Siddique, Paolo Giaccone, Andrea Bianco, and Guido Maier. "Inter-Controller Traffic to Support Consistency in ONOS Clusters." IEEE Transactions on Network and Service Management 14, no. 4 (December 2017): 1018–31. http://dx.doi.org/10.1109/tnsm.2017.2723477.

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Qin, Hua, and Na Wang. "A Data-origin Authentication Protocol Based on ONOS Cluster." MATEC Web of Conferences 56 (2016): 01006. http://dx.doi.org/10.1051/matecconf/20165601006.

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Bianco, Andrea, Paolo Giaccone, Reza Mashayekhi, Mario Ullio, and Vinicio Vercellone. "Scalability of ONOS reactive forwarding applications in ISP networks." Computer Communications 102 (April 2017): 130–38. http://dx.doi.org/10.1016/j.comcom.2016.09.007.

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Zhou, Zhijun, Yuan Huang, Fuming Shi, and Haiyan Ye. "The complete mitochondrial genome of Deracantha onos (Orthoptera: Bradyporidae)." Molecular Biology Reports 36, no. 1 (September 23, 2007): 7–12. http://dx.doi.org/10.1007/s11033-007-9145-8.

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Bouras, Christos, Anastasia Kollia, and Andreas Papazois. "Exploring SDN & NFV in 5G Using ONOS & POX Controllers." International Journal of Interdisciplinary Telecommunications and Networking 10, no. 4 (October 2018): 46–60. http://dx.doi.org/10.4018/ijitn.2018100103.

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This article describes how novel functionalities will take advantage of the cloud networking and will gradually replace the existing infrastructure of mobile networks with a virtualized one. Two technologies, namely software defined networking (SDN) and network function virtualization (NFV), offer their important benefits and a combination of them is an answer to the demands raised, such as central office re-architected as a data center (CORD). Open network operating system (ONOS) and POX are SDN controllers and offer an option to combine SDN and NFV addressing many ongoing problems in the field of mobile networks. In this paper, technologies and both controllers are compared and contrasted. Indicative cases of topologies are simulated and help evaluating both controllers. According to the experimental findings, ONOS is one of the most important controllers for practical, theoretical, research and educational purposes, while POX is a useful and simpler controller for other educative applications.

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Nuraeni, Mega Safira, Eka Wahyudi, and Nanda Iryani. "Perbandingan Kontroler POX, Ryu dan ONOS Pada Arsitektur Software Defined Network (SDN) Menggunakan Topologi Linear." Journal of Telecommunication, Electronics, and Control Engineering (JTECE) 4, no. 2 (July 4, 2022): 66–79. http://dx.doi.org/10.20895/jtece.v4i2.360.

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Abstrak Software defined network merupakan konsep baru yang memisahkan data plane dengan control plane. Kontroler menjadi suatu hal yang penting dalam membangun arsitektur software defined network, sehingga dibutuhkan informasi terkait performansi kontroler untuk mengetahui tingkat kemampuan suatu kontroler, bebarapa kontroler yang ada diantaranya POX, Ryu dan ONOS. Pada penenelitan ini menggunakan topologi jaringan linear yang menggunakan 10 switch dan 10 host, 12 switch dan 12 host, 14 switch dan 14 host dan 16 Switch 16 host pada background traffic 50 Mbps hingga 200 Mbps. Dari pengujian ini diperoleh hasil bahwa kenaikan nilai troughput, delay dan jitter berbanding lurus dengan meningkatnya jumlah switch, kontroler POX memiliki performa terbaik dibandingkan dengan kontroler Ryu dan ONOS dengan nilai troughput yang didapatkan sebesar 5.139,456 Kbits/sec hingga 5.142,139 Kbits/sec, untuk nilai delay yang didapatkan sebesar 0,078 ms hingga 0,110 ms sedangkan untuk nilai jitter diperoleh 0,037 ms hingga 0,070 ms. Abstract Software defined network is a new concept that separates the data plane from the control plane. The controller is an important thing in building a software defined network architecture, so information regarding controller performance is needed to determine the level of capability of a controller, some of the existing controllers include POX, Ryu and ONOS. This research uses a linear network topology that uses 10 switches and 10 host, 12 switches and 12 host, 14 switches and 14 host and 16 switches and 16 host on 50 Mbps to 200 Mbps background traffic. From this test, the results show that the increase in throughput, delay and jitter values is directly proportional to the increase in the number of switches, the POX controller has the best performance compared to the Ryu and ONOS controllers with the throughput value obtained from 5,139,456 Kbits/sec to 5,142,139 Kbits/sec. , for the delay value obtained is 0.078 ms to 0.110 ms while the jitter value is obtained from 0.037 ms to 0.070 ms.

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Pratama, I. Putu Agus Eka. "Design and Implementation of SDN IP Based on Open Network Operating System and Border Gateway Protocol." Bulletin of Computer Science and Electrical Engineering 2, no. 2 (December 30, 2021): 56–66. http://dx.doi.org/10.25008/bcsee.v2i2.1145.

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The development of computer network technology in the form of Software Defined Networking (SDN), provides many facilities for users to be able to develop network control applications, which can separate the data plane function from the control plane. The existence of this separation on routers and switches makes it easy for developers to centrally develop software and devices according to what is needed by users. However, there were obstacles to implementing SDN on IP networks in a short time. For this reason, it is necessary to implement SDN in stages by adding SDN to the existing IP network in the form of SDN IP, so that SDN can be connected and exchange routing information autonomously. This study focuses on the design and implementation of SDN IP using the Open Network Operating System (ONOS) on the Border Gateway Protocol (BGP). The results show that the design and implementation of SDN IP based on ONOS and BGP can be done well, where SDN can connect and exchange routing information with the Autonomous System (AS) native BGP-based network. Key word(s): Autonomous System (AS) Border Gateway Protocol (BGP) Open Network Operating System (ONOS) Software-Defined Networking (SDN) SDN IP

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Būgienė, Lina. "About Grandma and Other Things." Tautosakos darbai 64 (December 30, 2022): 189–94. http://dx.doi.org/10.51554/td.22.64.10.

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Živilė Kropaitė-Basiulė, # fainiausia pasauly močiutė. Anūkė klausia apie karus ir sąžinę. Partizanų ryšininkės ir politinės kalinės Onos Butrimaitės-Laurinienės istorija. Vilnius: Balto, 2022, 336 p.

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Risdianto, Aris Cahyadi, JunSik Shin, Teck Chaw Ling, and JongWon Kim. "Leveraging ONOS SDN Controllers for OF@TEIN SD-WAN Experiments." Proceedings of the Asia-Pacific Advanced Network 40 (October 21, 2015): 1. http://dx.doi.org/10.7125/40.1.

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Bleizgienė, Ramunė. "Moteriškoji tapatybė Onos Pleirytės-Puidienės-Vaidilutės kultūrinėje laikysenoje ir kūryboje." Literatūra 48, no. 6 (January 1, 2015): 81–104. http://dx.doi.org/10.15388/litera.2006.6.8018.

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Yu, Haisheng, Zhixian Liu, Sai Zou, and Wenyong Wang. "CPACK: An Intelligent Cyber-Physical Access Control Kit for Protecting Network." Sensors 22, no. 20 (October 20, 2022): 8014. http://dx.doi.org/10.3390/s22208014.

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Access Control Lists (ACL) are critical to protecting network and cyber-physical systems. Traditional firewalls mostly use reactive methods to enforce ACLs, so that new ACL updates cannot take effect immediately. In this paper, based on our previous work, we propose CPACK, an intelligent cyber-physical access control kit, which uses a smart algorithm to upgrade the ACL list. CPACK adopts a proactive way to enforce ACL and reacts to a new ACL update and network view update in real time. We implement CPACK on both Floodlight and ONOS controller. We then conduct a large number of experiments to compare CPACK with the Floodlight firewall application. The experimental results show that CPACK has a better performance than the existing Floodlight firewall application. CPACK is also integrated into the new version of Floodlight and ONOS controller.

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Warchalowska-Sliwa, Elzbieta, and Alexander G. Bugrov. "C-heterochromatin Variation in Deracantha onos (Pall.) (Deracanthini, Bradyporinae, Tettigoniidae, Orthoptera)." CYTOLOGIA 62, no. 1 (1997): 7–12. http://dx.doi.org/10.1508/cytologia.62.7.

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Lam, JunHuy, Sang-Gon Lee, Hoon-Jae Lee, and Yustus Eko Oktian. "Design, implementation, and performance evaluation of identity-based cryptography in ONOS." International Journal of Network Management 28, no. 1 (August 14, 2017): e1990. http://dx.doi.org/10.1002/nem.1990.

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Ilham, Muhammad, and Nur Rohman Rosyid. "Pengembangan Aplikasi Pemantauan Jaringan Berbasis Web pada Software-Defined Networking dengan Protokol SFLOW." Jurnal Teknologi Informasi dan Ilmu Komputer 8, no. 6 (November 24, 2021): 1117. http://dx.doi.org/10.25126/jtiik.2021863367.

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Software-defined networking (SDN) merupakan salah satu arsitektur jaringan yang dapat diprogram untuk memudahkan manajemen jaringan menggunakan aplikasi pengontrol.. SDN controller seperti ONOS hanya berfungsi untuk manajemen flow table dan tidak memiliki fitur pemantauan traffic jaringan yang cukup untuk mendukung proses manajemen jaringan. Oleh karena itu, untuk melakukan pemantauan traffic SDN maka diperlukan protokol lain seperti sFlow. Pada penelitian ini dikembangkan aplikasi sistem pemantauan traffic SDN berbasis web dengan menggunakan ONOS sebagai SDN controller, sFlow-RT sebagai sFlow collector, dan Node.js sebagai web server. Hasil pengembangan aplikasi menghasilkan tiga buah fitur utama yaitu topologi, grafik traffic, dan laporan. Visualisasi topologi dibuat berdasarkan data topologi dari API ONOS dan ditampilkan menggunakan pustaka vis.js. Kemudian untuk grafik throughput dibuat berdasarkan data traffic dari API sFlow-RT dan ditampilkan menggunakan pustaka dygraph. Data topologi dan traffic yang tertampil pada aplikasi diperbarui setiap 10 detik. Pengujian aplikasi dilakukan dengan black-box testing menunjukkan bahwa semua fungsi pada aplikasi berhasil dilakukan. Hasil survei menunjukkan bahwa aplikasi memiliki tampilan informatif dan ramah pengguna, serta dapat memudahkan pemantauan traffic SDN. AbstractSoftware-defined networking (SDN) is one of the network architectures which programmable to ease network management using the controller application. SDN controllers such as ONOS only function for flow table management and do not have enough network traffic monitoring features to support network management processes. Therefore, to monitor SDN traffic other protocols such as sFlow are needed. In this research, the web-based SDN traffic monitoring system application was developed by using ONOS as SDN controller, sFlow-RT as sFlow collector, and Node.js as a web server. The results of application development produce three main features namely topology, traffic graphs, and reports. The topology visualization is based on topology data from the ONOS API and is displayed using the vis.js library. Then the throughput graph is made based on data traffic from the sFlow-RT API and displayed using the dygraph library. Topology and traffic data displayed on the application are updated every 10 seconds. Application testing is done with black-box testing showing that all functions and features of the application can function properly. The survey conducted shows that the application has an informative and user-friendly display, and can facilitate monitoring of SDN traffic.

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Kozlowski, Jan M. "God’s Name ὁ Ὤν (Exod 3:14) as a Source of Accusing Jews of Onolatry." Journal for the Study of Judaism 49, no. 3 (April 5, 2018): 350–55. http://dx.doi.org/10.1163/15700631-12492223.

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AbstractThe author of this article presents arguments in favor of the new hypothesis, according to which the misunderstanding by non-Jews of God’s nameho ōn(Exod 3:14), and its subsequent association with the Greek wordho onos(“the ass”), stands as a source for accusing Jews of onolatry.

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Zaher, Maiass, and Sándor Molnár. "A Comparative and Analytical Study for Choosing the Best Suited SDN Network Operating System for Cloud Data Center." Annals of Emerging Technologies in Computing 6, no. 1 (January 1, 2022): 43–59. http://dx.doi.org/10.33166/aetic.2022.01.003.

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The growing deployment of Software Defined Network (SDN) paradigm in the academic and commercial sectors resulted in many different Network Operating Systems (NOS). As a result, adopting the right NOS requires an analytical study of the available alternatives according to the target use case. This study aims to determine the best NOS according to the requirements of Cloud Data Center (CDC). This paper evaluates the specifications of the most common open-source NOSs. The studied features have been classified into two groups, i.e., non-functional features such as availability, scalability, ease of use, maturity, security and interoperability, and functional features, such as virtualization, fault verification and troubleshooting, packet forwarding techniques and traffic protection solutions. A Decision support system, Analytical Hierarchy Process (AHP) has been applied for assessing specifications of the inspected NOSs, namely, ONOS, Opendaylight (ODL), Floodlight, Ryu, POX and Tungsten. Our investigation revealed that ODL is the most suitable NOS for CDC compared to the rest studied NOSs. However, ODL and ONOS have almost similar scores compared to the rest NOSs.

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Pratama, I. Putu Agus Eka, and I. Made Adhiarta Wikantyasa. "Implementasi dan Analisis Simulasi QOS dan Perfomance Device dengan Menggunakan ONOS dan Iperf3." Jurnal Informatika Universitas Pamulang 4, no. 2 (June 30, 2019): 57. http://dx.doi.org/10.32493/informatika.v4i2.2730.

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Internet have evolved so rapidly in this day and age from where user only can access to internet service through cable UTP(LAN) and now user can access it from every where through nirkable (Wireless Network) and from this improvement it caused lots of device connected and heavy traffic coming in and out from a network. Because of this situation the network industry come with a new idea using a new network architecture that known as Software Defined Network (SDN). Software Defined Network (SDN) is a new way to manage, design and implementing network architecture where data flow from the control plane separated from the hardware. Network industry believe that SDN can change the network architecture that people using now that known as Traditonal Network because SDN can overcome the weakness of Tradional network that tend to be closed and distributed can be changed by SDN to be open source, can be programmed and can be controlled centrally. In this research will be implementing and analys simulation Quality Of Service (QOS) and Perfomance device openflow switch using ONOS as controller to monitor the device perfomance and iperf3 as a Quality Of Service testing.

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Arif Kamarudin, Fathul, Megat Norulazmi Megat Mohamed Noor, and Fuead Ali. "A comparative study for bandwidth on demand using ONOS reactive and intent forwarding." Indonesian Journal of Electrical Engineering and Computer Science 17, no. 3 (March 1, 2020): 1410. http://dx.doi.org/10.11591/ijeecs.v17.i3.pp1410-1421.

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Telco operators need to tailor their networks to be agile, efficient and able manage the operational cost at moderate level. Furthermore, the norm of network volatility practiced by many enterprises open to a new challenge in managing an increasing traffic over the same WAN. For an enterprise, turning toward Bandwidth-on-Demand (BoD) approach promises to deliver extra network capacity when in demand without the complexity of running separate network. However, they need to manually transform these high-level policies into low-level configuration command and thus error-prone. This study was to address the effects of SDN (software-defined network) on the BoD performance towards the differences between the reactive and intent forwarding based on the assessment matrix. The testbed was performed under Mininet simulator which interacted with ONOS (Open Network Operating System). Mesh type topology with a predetermine parameter matrix was used using random topology generator. The expected outcome from this research was to show the effect on the BoD performance under two type of forwarding; reactive and intent based on the assessment matrix. This report contributed towards determining the effectiveness of SDN architecture on BoD performance and to improve future benchmarking on SDN-BoD testbed.

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Han, Yoonseon, Thomas Vachuska, Ali Al-Shabibi, Jian Li, Huibai Huang, William Snow, and James Won-Ki Hong. "ONVisor: Towards a scalable and flexible SDN-based network virtualization platform on ONOS." International Journal of Network Management 28, no. 2 (November 12, 2017): e2012. http://dx.doi.org/10.1002/nem.2012.

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Abdullah Mohammed, Ghazwan, and Omar Abdulmonem Ibrahim Aldabbagh. "A Comparative Evaluation of the Performance of SDN Controllers (ONOS) using DOCKER Container." Technium: Romanian Journal of Applied Sciences and Technology 8 (March 8, 2023): 25–31. http://dx.doi.org/10.47577/technium.v8i.8585.

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software-defined networks SDN represents a significant shift in the networking field through the ability to solve problems facing traditional networks, such as updating components for networks and integration between devices. Open-source components and protocols were used in SDN. Among its advantages are the separation of the control plane from the data plane, the use of the OpenFlow protocol, and the transition to Decentralization in network management. In SDN, there are several types of controllers. In this paper, work has been done on ONOS controllers in cluster mode from one to five controllers, and a comparison between the performance of different numbers of controllers to obtain the best performance through the use of Cbench. It was found that using one or two controllers achieves the best performance

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Čabarkapa, Danijel, Dejan Rančić, Petar Pavlović, and Miodrag Milićević. "INVESTIGATING THE IMPACT OF TREE-BASED NETWORK TOPOLOGY ON THE SDN CONTROLLER PERFORMANCE." Facta Universitatis, Series: Automatic Control and Robotics 1, no. 1 (July 14, 2022): 025. http://dx.doi.org/10.22190/fuacr211223003c.

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Software Defined Networking (SDN) is an important technology that enables a new approach to how we develop and manage networks. SDN divides the data plane and control plane and promotes logical centralization of network control so that the controller can schedule the data in the network effectively through the OpenFlow protocol. The performance and capabilities of the controller itself are important. The impact of network topology type on controller performance can be very significant. In order to have better communication in SDN, it is essential to have an analysis of the performance of specific network topologies. In this paper, we simulate ONOS and RYU controllers and compare their different network parameters under the proposed complex custom Tree-based topology. A network topology has been designed using a Mininet emulator, and the code for topology is executed in Python. From the throughput, packet transmission rate, and latency analysis, the ONOS controller displayed better results than RYU, showing that it can respond to requests more efficiently under complex SDN topologies and traffic loads. On the contrary, the RYU controller provides better results for the less complex SDN networks.

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Badotra, Sumit, Sarvesh Tanwar, Salil Bharany, Ateeq Ur Rehman, Elsayed Tag Eldin, Nivin A. Ghamry, and Muhammad Shafiq. "A DDoS Vulnerability Analysis System against Distributed SDN Controllers in a Cloud Computing Environment." Electronics 11, no. 19 (September 29, 2022): 3120. http://dx.doi.org/10.3390/electronics11193120.

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Software-Defined Networking (SDN) is now a well-established approach in 5G, Internet of Things (IoT) and Cloud Computing. The primary idea behind its immense popularity is the separation of its underlying intelligence from the data-carrying components like routers and switches. The intelligence of the SDN-based networks lies in the central point, popularly known as the SDN controller. It is the central control hub of the SDN-based network, which has full privileges and a global view over the entire network. Providing security to SDN controllers is one such important task. Whenever one wishes to implement SDN into their data center or network, they are required to provide the website to SDN controllers. Several attacks are becoming a hurdle in the exponential growth of SDN, and among all one such attack is a Distributed Denial of Service (DDoS) attack. In a couple of years, several new SDN controllers will be available. Among many, Open Networking Operating System (ONOS) and OpenDayLight (ODL) are two popular SDN controllers laying the foundation for many other controllers. These SDN controllers are now being used by numerous businesses, including Cisco, Juniper, IBM, Google, etc. In this paper, vulnerability analysis is carried out against DDoS attacks on the latest released versions of both ODL and ONOS SDN controllers in real-time cloud data centers. For this, we have considered distributed SDN controllers (located at different locations) on two different clouds (AWS and Azure). These controllers are connected through the Internet and work on different networks. DDoS attacks are bombarded on the distributed SDN controllers, and vulnerability is analyzed. It was observed with experimentation that, under five different scenarios (malicious traffic generated), ODL-3 node cluster controller had performed better than ONOS. In these five different scenarios, the amount of malicious traffic was incregradually increased. It also observed that, in terms of disk utilization, memory utilization, and CPU utilization, the ODL 3-node cluster was way ahead of the SDN controller.

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Dawadi, Babu R., Danda B. Rawat, Shashidhar R. Joshi, and Pietro Manzoni. "Legacy Network Integration with SDN-IP Implementation towards a Multi-Domain SoDIP6 Network Environment." Electronics 9, no. 9 (September 6, 2020): 1454. http://dx.doi.org/10.3390/electronics9091454.

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The logical separation of the data plane and the control plane of the network device conceptually defined by software-defined networking (SDN) creates many opportunities to create smart networking with better efficiency for network management and operation. SDN implementation over telecommunications (Telcos) and Internet service provider (ISP) networks is a challenging issue due to the lack of a high maturity level of SDN-based standards and several other critical factors that are considered during the real-time migration of existing legacy IPv4 networks. Different migration approaches have been studied; however, none of them seem to be close to realizing implementation. This paper implements the SDN-IP and Open Network Operating System (ONOS) SDN controller to migrate legacy IPv4 networks to multi-domain software-defined IPv6 (SoDIP6) networks and experimentally evaluate the viability of joint network migration in the ISP networks. We present results using extensive simulations for the suitable placement of the master ONOS controller during network migration by considering minimum control path latency using optimal path routing and the breadth first router replacement (BFR) technique. Our empirical analysis and evaluations show that the identification of the median router to attach the master controller and router migration planning using BFR give better results for carrier-grade legacy networks’ migration to SoDIP6 networks.

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Elaeva, N. F., and O. S. Korsunovskaya. "Ecology and sound signaling of relict katydid Deracantha onos (Pallas, 1772) (Orthoptera, Tettigoniidae, Bradyporinae)." Moscow University Biological Sciences Bulletin 67, no. 3-4 (July 2012): 111–16. http://dx.doi.org/10.3103/s0096392512020046.

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Risdianto, Aris Cahyadi, Pang-Wei Tsai, Teck Chaw Ling, Chu-Sing Yang, and JongWon Kim. "Enhanced Onos Sdn Controllers Deployment For Federated Multi-Domain Sdn-Cloud With Sd-Routing-Exchange." Malaysian Journal of Computer Science 30, no. 2 (June 1, 2017): 134–53. http://dx.doi.org/10.22452/mjcs.vol30no2.5.

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Giorgetti, Alessio, Andrea Sgambelluri, Ramon Casellas, Roberto Morro, Andrea Campanella, and Piero Castoldi. "Control of open and disaggregated transport networks using the Open Network Operating System (ONOS) [Invited]." Journal of Optical Communications and Networking 12, no. 2 (December 6, 2019): A171. http://dx.doi.org/10.1364/jocn.12.00a171.

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Drungilienė, Gita. "MOTERS LEKTŪRA VIDURAMŽIŲ LIETUVOJE: KUNIGAIKŠTIENĖ ONA IR DARATOS IŠ MONTAU „GYVENIMAS“." Knygotyra 66 (June 23, 2016): 21–36. http://dx.doi.org/10.15388/kn.v66i0.10015.

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Straipsnis skiriamas šaltiniuose užfiksuotai žinutei, kaip 1400 metais lankydamasi Marienverderyje Lietuvos didžiojo kunigaikščio Vytauto žmona Ona gavo dvi knygeles apie palaimintosios Daratos iš Montau gyvenimą. Remiantis Daratos kanonizacijos dokumentais ir kitais šaltiniais siekiama atskleisti, kokiomis aplinkybėmis bei kokias knygas gavo kunigaikštienė Ona ir ką tai pasako apie ją pačią. Tyrime pristatytas Daratos dvasingumas ir kultas, kurio atgarsiai pasiekė Lietuvą, aptariamos jos nuodėmklausio ir hagiografo Jono iš Marienverderio parašytos knygelės – „daratianos“ repertuaras, nagrinėjamas Daratos kanonizacijos proceso bylos liudytojų paminėtas Onos lankymasis Marienverderyje bei pamaldumas Daratai.

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Mheallaigh, Karen Ní. "Ec[H]Oing the Ass-Novel: Reading and Desire in Onos, Metamorphoses and the Name of the Rose." Ramus 38, no. 1 (2009): 109–22. http://dx.doi.org/10.1017/s0048671x00000667.

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Until then I had thought each book spoke of the things, human or divine, that lie outside books. Now I realised that not infrequently books speak of other books: it is as if they spoke among themselves. In the light of this reflection, the library seemed all the more disturbing to me. It was then a place of a long centuries-old murmuring, an imperceptible dialogue between one parchment and another, a living thing…Umberto Eco The Name of the Roseat ego tibi sermone isto Milesio uarias fabulas conseram auresque tuas beniuolas lepido susurro permulceam… (But I would join together a variety of tales for you in that Milesian mode, and I would enchant your kindly ears with a charming murmur…)The speaking book? Apuleius MetamorphosesIn the chapter called ‘Terce’ of the Second Day, the Franciscan monk William of Baskerville and his young apprentice Adso visit the scriptorium of an abbey in northern Italy, and discover, among the papers of the murdered Greek translator Venantius, a surprising text:Another Greek book was open on the lectern, the work on which Venantius had been exercising his skill as translator in the past days. At that time I knew no Greek, but my master read the title and said this was by a certain Lucian and was the story of a man turned into an ass. I recalled then a similar fable by Apuleius, which, as a rule, novices were strongly advised against reading.(Eco, The Name of the Rose, 128)

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Mitich, Larry W. "Thistles I: Cirsium and Carduus." Weed Technology 2, no. 2 (April 1988): 228–29. http://dx.doi.org/10.1017/s0890037x00030463.

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When Scotland was under an imminent Viking invasion, the Scots piled the beaches with thistles and waited. During the night of the invasion, the sandal-clad Norsemen leaped onto the thistle-strewn beach and let out cries of pain and curses. Warned of their approach, the Scots drove the Norsemen back to their ships. Small wonder that the thistle became Scotland's heraldic emblem and the source of her motto, “Touch Me Who Dares”. Since 1687, induction into Scotland's Order of the Thistle has been a great honor. Linnaeus named Scotch thistle, Onopordum acanthium L. # ONRAC, from the Greek onos, or donkey, and perdo, to consume; the species name is from the Latin acanthus, meaning spiny. Thus it is a spiny plant eaten by donkeys.

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Singh, Radheshyam, José Soler, Tidiane Sylla, Leo Mendiboure, and Marion Berbineau. "Coexistence of Railway and Road Services by Sharing Telecommunication Infrastructure Using SDN-Based Slicing: A Tutorial." Network 2, no. 4 (December 1, 2022): 670–706. http://dx.doi.org/10.3390/network2040038.

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This paper provides a detailed tutorial to develop a sandbox to emulate coexistence scenarios for road and railway services in terms of sharing telecommunication infrastructure using software-defined network (SDN) capabilities. This paper provides detailed instructions for the creation of network topology using Mininet–WiFi that can mimic real-life coexistence scenarios between railways and roads. The network elements are programmed and controlled by the ONOS SDN controller. The developed SDN application can differentiate the data traffic from railways and roads. Data traffic differentiation is carried out using a VLAN tagging mechanism. Further, it also provides comprehensive information about the different tools that are used to generate the data traffic that can emulate messaging, video streaming, and critical data transmission of railway and road domains. It also provides the steps to use SUMO to represent the selected coexistence scenarios in a graphical way.

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Muluye, Worku. "A Review on Software-Defined Networking Distributed Controllers." International Journal of Engineering and Computer Science 9, no. 2 (February 15, 2020): 24953–61. http://dx.doi.org/10.18535/ijecs/v9i2.4439.

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A computer network is a critical issue in our day to day activity; however, today it works under various problems. Since in the current network architecture the control plane and data plane are vertically bundled on the same device. To solve this problem programmable Software-Defined Network is released. OpenFlow is a protocol that vertically separates control plane and data plane of the network devices. In SDN the controllers are the brains of the network that controls the network devices. Today’s network required successful integration of distributed controllers to make the network more consistent. SDN distributed controller is a controller that we can add or remove the controllers according to the number of devices change. Distributed controller architecture has investigated and compared the 6 recent distributed controllers by using 26 criteria. Orion is the first best controller and ONOS is the second best controller.

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Chakravarthy, V. Deeban, and B. Amutha. "Path based load balancing for data center networks using SDN." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 4 (August 1, 2019): 3279. http://dx.doi.org/10.11591/ijece.v9i4.pp3279-3285.

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Due to the increase in the number of users on the internet and the number of applications that is available in the cloud makes Data Center Networking (DCN) has the backbone for computing. These data centre requires high operational cost and also experience the link failures and congestions often. Hence the solution is to use Software Defined Networking (SDN) based load balancer which improves the efficiency of the network by distributing the traffic across multiple paths to optimize the efficiency of the network. Traditional load balancers are very expensive and inflexible. These SDN load balancers do not require costly hardware and can be programmed, which it makes it easier to implement user-defined algorithms and load balancing strategies. In this paper, we have proposed an efficient load balancing technique by considering different parameters to maintain the load efficiently using Open FlowSwitches connected to ONOS controller.

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Lam, JunHuy, Sang-Gon Lee, Hoon-Jae Lee, and Yustus Eko Oktian. "Securing SDN Southbound and Data Plane Communication with IBC." Mobile Information Systems 2016 (2016): 1–12. http://dx.doi.org/10.1155/2016/1708970.

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In software-defined network (SDN), the southbound protocol defines the communication between the control plane and the data plane. The agreed protocol, OpenFlow, suggests securing the southbound communication with Transport Layer Security (TLS). However, most current SDN projects do not implement the security segment, with only a few exceptions such as OpenDayLight, HP VAN SDN, and ONOS implementing TLS in the southbound communication. From the telecommunication providers’ perspective, one of the major SDN consumers besides data centers, the data plane becomes much more complicated with the addition of wireless data plane as it involves numerous wireless technologies. Therefore, the complicated resource management along with the security of such a data plane can hinder the migration to SDN. In this paper, we propose securing the distributed SDN communication with a multidomain capable Identity-Based Cryptography (IBC) protocol, particularly for the southbound and wireless data plane communication. We also analyze the TLS-secured Message Queuing Telemetry Transport (MQTT) message exchanges to find out the possible bandwidth saved with IBC.

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Selvaraj, P., and V. Nagarajan. "Need of Algorithm Selection in Next Generation Optical Networks." International Journal of Business Data Communications and Networking 14, no. 1 (January 2018): 81–92. http://dx.doi.org/10.4018/ijbdcn.2018010105.

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The IP-based data networks and optical networks have been managed independently with layered protocol stack approach. Both of them were over-provisioned to manage any traffic anomalies and failures. The next generation optical network is expected to handle the needs of the emerging applications in a cost-effective way while satisfying the required QoT. In such scenario, the intents of the application layer must be accounted in the path computation. There is no single path computation algorithm exists which behave optimally under varying traffic conditions. Hence the need for the intent-driven automated algorithm selection was identified. The authors have phrased this intent specific lightpath provisioning problem as the path computation algorithm selection problem. An algorithm selection methodology was proposed with the study of the least congested path in ONOS based software defined controller environment. This approach is claimed as an amenable candidate for the next generation software-defined optical network.

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Hyder, M. F., Waseemullah, and M. U. Farooq. "Towards Countering the Insider Reconnaissance Using a Combination of Shuffling and Diversity Moving Target Defense Techniques." Engineering, Technology & Applied Science Research 11, no. 6 (December 11, 2021): 7745–49. http://dx.doi.org/10.48084/etasr.4417.

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Moving Target Defense (MTD) has recently emerged as a significant cybersecurity technique. Software-Defined Networking (SDN) has the capability to design efficient network architecture due to its programmability and centralized control management. In this paper, a mechanism for the protection against insider reconnaissance has been proposed using a combination of diversity and a shuffling-based approach of MTD. In order to implement the shuffling technique, IP shuffling is used in the insider network. The IP addresses of internal hosts are mapped via real to virtual IP mapping through random IP generation from a pseudo-random mechanism. For the diversity, a multiple servers’ platform is incorporated for different critical LAN services like Domain Name System (DNS), internal web services, etc. This combined diversity and shuffling approach significantly counters the insider reconnaissance targeting critical LAN services. The proposed scheme also exploited open-source IDS to block insider reconnaissance. The proposed solution was implemented using ONOS SDN controller, Mininet simulator, Snort IDS systems. The experimental results substantiate effective protection against insider network reconnaissance at a low computational cost.

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Hyder, M. F., and M. A. Ismail. "INMTD: Intent-based Moving Target Defense Framework using Software Defined Networks." Engineering, Technology & Applied Science Research 10, no. 1 (February 3, 2020): 5142–47. http://dx.doi.org/10.48084/etasr.3266.

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Intent-Based Networking (IBN) is an emerging networking paradigm while Moving Target Defense (MTD) is an active security technique. In this paper, the Intent-based Moving Target Defense (INMTD) framework using Software Defined Networks is proposed. INMTD is the first effort in exploiting IBN for the design of an efficient Moving Target Defense (MTD) framework. INMTD uses the concept of shadow servers in order to counter the first stage of cyber-attacks, i.e. reconnaissance attacks targeted against servers running in SDN networks. INMTD comprises of an MTD application running on an SDN controller. The MTD application has reconnaissance detection, MTD movement, and MTD monitoring modules. The MTD application is integrated with the intent-based northbound API of SDN controller. INMTD not only provides protection against probing attacks, but it also provides high availability due to shadow servers. The proposed framework was implemented using Mininet and ONOS SDN controller. The proposed framework was assessed in terms of defender cost, attacker’s effort, and introduced complexity in the system. The results substantiate the efficient protection against reconnaissance attacks at lower computational cost.

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Lucrezia, Francesco, Guido Marchetto, Fulvio Risso, Michele Santuari, and Matteo Gerola. "A Proposal for End-to-End QoS Provisioning in Software-Defined Networks." International Journal of Electrical and Computer Engineering (IJECE) 7, no. 4 (August 1, 2017): 2261. http://dx.doi.org/10.11591/ijece.v7i4.pp2261-2277.

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This paper describes a framework application for the control plane of a network infrastructure; the objective is to feature end-user applications with the capability of requesting at any time a customised end-to-end Quality-of-Service profile in the context of dynamic Service-Level-Agreements. Our solution targets current and future real-time applications that require tight QoS parameters, such as a guaranteed end-to-end delay bound. These applications include, but are not limited to, health-care, mobility, education, manufacturing, smart grids, gaming and much more. We discuss the issues related to the previous Integrated Service and the reason why the RSVP protocol for guaranteed QoS did not take off. Then we present a new signaling and resource reservation framework based on the cutting-edge network controller ONOS. Moreover, the presented system foresees the need of considering the edges of the network, where terminal applications are connected to, to be piloted by distinct logically centralised controllers. We discuss a possible inter-domain communication mechanism to achieve the end-to-end QoS guarantee.

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Nsafoa-Yeboah, Kenneth, Eric Tutu Tchao, Bright Yeboah-Akowuah, Benjamin Kommey, Andrew Selasi Agbemenu, Eliel Keelson, and Mohammad Monirujjaman Khan. "Software-Defined Networks for Optical Networks Using Flexible Orchestration: Advances, Challenges, and Opportunities." Journal of Computer Networks and Communications 2022 (August 4, 2022): 1–40. http://dx.doi.org/10.1155/2022/5037702.

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Optical networks offer a wide range of benefits to the telecommunication sector worldwide with their provision of higher bandwidth, which leads to faster data speed, longer transmission distance, and improved latency. Currently, the complexity associated with advancements in optical networks poses problems to network flexibility, reliability, and quality of service. Over the years, many reviews and proposals have been implemented by several literature studies to provide solutions for optical networks using software-defined networks and network service orchestrators. This study reviews the significant challenges in current optical network applications, the various solutions rendered by software-defined networks, and network service orchestration, impediments, and gaps in these software-defined networks. This study will go a step further to look into the various improvements and implementations of software-defined networks tailored to solve specific optical network problems. This study further proposes a flexible orchestration architecture for software-defined networks for solving flexibility and scalability problems in optical networks. This proposal uses an open network system (ONOS) SDN controller, leveraging on dockerisation and Kubernetes clusterisation and orchestration. This solution presents a more flexible, reliable, customable, and higher quality of service, which is an improvement upon current solutions in the literature.

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Zaw, Hnin Thiri, and AungHtein Maw. "Traffic management with elephant flow detection in software defined networks (SDN)." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 4 (August 1, 2019): 3203. http://dx.doi.org/10.11591/ijece.v9i4.pp3203-3211.

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Multipath routing is to distribute the incoming traffic load among available paths between source and destination hosts. Instead of using the single best path, multipath scheme can avoid the congested path. Equal Cost Multi-Path (ECMP) performs the static traffic splitting based on some tuples of the packet headers. The limitation of ECMP does not consider the network parameters such as bandwidth and delay. Unlike the traditional networks, Software-Defined Network (SDN) has many advantages to support dynamic multipath forwarding due to its special characteristics, such as separation of control and data planes, global centralized control, and programmability of network behavior. In this paper, we propose a new architecture design for dynamic multipath-based traffic management approach in the SDN, which comprises of five components: detecting long (elephant) flow, computing shortest paths, estimating end-to-end delay and bandwidth utilization, calculating least cost path and rerouting traffic flow from the ongoing path to the best path. The simulation environment is created through the usage of Mininet emulator and ONOS controller. The evaluation outcomes show that the proposed traffic management method outperforms the ECMP and reactive forwarding method for both TCP and UDP traffic.

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Perkins, Judith. "Animal Voices." Religion and Theology 12, no. 3-4 (2005): 385–96. http://dx.doi.org/10.1163/157430106776241204.

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AbstractThis article suggests that the presence of talking animals in the Apocryphal Acts of Paul, Peter, Thomas and Phillip, examples of Christian prose ﬁction, shows a Christian intervention in a wider cultural discussion taking place in the period about human self-understandings and identity. The hierarchical thinking of ancient culture consigned many humans to animal status. Two second-century narratives, Apuleius' Metamorphoses and the Greek Onos, through their depictions of a human suddenly transformed into an ass, suggest that authors of the period used this image of an animal-man to reﬂect on what it would be like for someone to lose his or her place and voice in society (as those reduced to slavery did) and suddenly ﬁnd oneself in the position of an animal, treated as less than fully human, as so many people in this period were. The Apocryphal Acts through their motif of talking animals worked to unsettle traditional status structures. Their representation of speaking animals ﬁgured a message of universal inclusiveness and equal participation by all species in the Christian community and worked to challenge the contemporary social hierarchy that devalued some persons in the society as too akin to animals.

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Jo, Hyeonseong, Jaehyun Nam, and Seungwon Shin. "NOSArmor: Building a Secure Network Operating System." Security and Communication Networks 2018 (2018): 1–14. http://dx.doi.org/10.1155/2018/9178425.

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Software-Defined Networking (SDN), controlling underlying network devices (i.e., data plane) in a logically centralized manner, is now actively adopted in many real world networking environments. It is clear that a network administrator can easily understand and manage his networking environments with the help of SDN. In SDN, a network operating system (NOS), also known as an SDN controller, is the most critical component because it should be involved in all transactions for controlling network devices, and thus the security of NOS cannot be highly exaggerated. However, in spite of its importance, no previous works have thoroughly investigated the security of NOS. In this work, to address this problem, we present the NOSArmor, which integrates several security mechanisms, named as security building block (SBB), into a consolidated SDN controller. NOSArmor consists of eight SBBs and each of them addresses different security principles of network assets. For example, while role-based authorization focuses on securing confidentiality of internal storage from malicious applications, OpenFlow protocol verifier protects availability of core service in the controller from malformed control messages received from switches. In addition, NOSArmor shows competitive performance compared to existing other controllers (i.e., ONOS, Floodlight) with secureness of network assets.

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Rachmadhani, Arnis. "Perkawinan Islam Wetu Telu Masyarakat Bayan Lombok Utara." Analisa 18, no. 1 (June 3, 2011): 59. http://dx.doi.org/10.18784/analisa.v18i1.124.

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This article examines the doctrine of marriage in Wetu Telu society in Bayan, North Lombok. According to the community marriage is carried out by three steps: perondongan, mepadik lamar, and selarian which is finished with some rituals, such as menjojok, memulang, sejati, pemuput selabar, akad nikah, sorong serah, nyongkolan, and balik onos nae. The marriage ritual is led in accordance with Islamic teachings by the Head of Office of Religious Affairs. In spite of referring to Islamic sharia, the Wetu Telu also strongly holds the teaching of their ancestors which is more identical with Siva-Buddhist teaching. After a long process of acculturation with Hinduism, the later takes a part in marriage process within the Wetu Telu. Therefore, the mar- riage concept carried out by the Wetu Telu is a combination of Siva-Budhist (as the religion of indigenous people) and Balinese Hinduism carried out by Balinese kingdom which had been mixed with Islamic teachings that later become local tradition. This local tradition then does create social stratification, marriage procedures and marriage procession. The local wisdom of marriage among the Wetu Telu has a potential role to strengthen religious harmony in multicultural society.

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Gupta, Neelam, Mashael S. Maashi, Sarvesh Tanwar, Sumit Badotra, Mohammed Aljebreen, and Salil Bharany. "A Comparative Study of Software Defined Networking Controllers Using Mininet." Electronics 11, no. 17 (August 29, 2022): 2715. http://dx.doi.org/10.3390/electronics11172715.

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Software Defined Networking (SDN) is a relatively new networking architecture that has become the most widely discussed networking technology in recent years and the latest development in the field of developing digital networks, which aims to break down the traditional connection in the middle of the control surface and the infrastructure surface. The goal of this separation is to make resources more manageable, secure, and controllable. As a result, many controllers such as Beacon, Floodlight, Ryu, OpenDayLight (ODL), Open Network Operating System (ONOS), NOX, as well as Pox, have been developed. The selection of the finest-fit controller has evolved into an application-specific tool operation due to the large range of SDN applications and controllers. This paper discusses SDN, a new paradigm of networking in which the architecture transitions from a completely distributed form to a more centralized form and evaluates and contrasts the effects of various SDN controllers on SDN. This report examines some SDN controllers or the network’s “brains,” shows how they differ from one another, and compares them to see which is best overall. The presentation of SDN controllers such as Ryu, ODL, and others is compared by utilizing the Mininet simulation environment. In this study, we offer a variety of controllers before introducing the tools used in the paper: Mininet. Then, we run an experiment to show how to use ODL to establish a custom network topology on a Mininet. The experimental results show that the O controller, with its larger bandwidth and reduced latency, outperforms other controllers in all topologies (both the default topology and a custom topology with ODL).

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Agnew, Dennis, Nader Aljohani, Reynold Mathieu, Sharon Boamah, Keerthiraj Nagaraj, Janise McNair, and Arturo Bretas. "Implementation Aspects of Smart Grids Cyber-Security Cross-Layered Framework for Critical Infrastructure Operation." Applied Sciences 12, no. 14 (July 7, 2022): 6868. http://dx.doi.org/10.3390/app12146868.

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Communication networks in power systems are a major part of the smart grid paradigm. It enables and facilitates the automation of power grid operation as well as self-healing in contingencies. Such dependencies on communication networks, though, create a roam for cyber-threats. An adversary can launch an attack on the communication network, which in turn reflects on power grid operation. Attacks could be in the form of false data injection into system measurements, flooding the communication channels with unnecessary data, or intercepting messages. Using machine learning-based processing on data gathered from communication networks and the power grid is a promising solution for detecting cyber threats. In this paper, a co-simulation of cyber-security for cross-layer strategy is presented. The advantage of such a framework is the augmentation of valuable data that enhances the detection as well as identification of anomalies in the operation of the power grid. The framework is implemented on the IEEE 118-bus system. The system is constructed in Mininet to simulate a communication network and obtain data for analysis. A distributed three controller software-defined networking (SDN) framework is proposed that utilizes the Open Network Operating System (ONOS) cluster. According to the findings of our suggested architecture, it outperforms a single SDN controller framework by a factor of more than ten times the throughput. This provides for a higher flow of data throughout the network while decreasing congestion caused by a single controller’s processing restrictions. Furthermore, our CECD-AS approach outperforms state-of-the-art physics and machine learning-based techniques in terms of attack classification. The performance of the framework is investigated under various types of communication attacks.

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Veichtlbauer, Armin, Alexander Heinisch, Ferdinand von von Tüllenburg, Peter Dorfinger, Oliver Langthaler, and Ulrich Pache. "Smart Grid Virtualisation for Grid-Based Routing." Electronics 9, no. 11 (November 8, 2020): 1879. http://dx.doi.org/10.3390/electronics9111879.

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Due to changed power consumption patterns, technological advance and deregulation, the appearance of the power grid in the low and medium voltage segment has changed. The spread of heating and cooling with electrical energy and an increase of electric vehicles as well as the broad rollout of photovoltaic systems has a major impact on the peak power demand of modern households and the volatility smart grids have to face. Thus, besides the load impact of the growing population of electric vehicles, modern households are not only consumers of electrical power, but also power producers, so called prosumers. The rising number of prosumers and the limitations of grid capacities lead to an increasingly distributed system of heterogeneous components, which have to be managed and operated with locality and scalability in mind. Virtualisation technologies, particularly known as state of the art in data centre computing, can lead to a paradigm shift needed to meet the growing demands of this evolution. A key issue here is to forward data to the correct data sinks, where data are required in order to keep the grid balanced. This routing process has to be able to react on grid changes in a timely manner, i.e., it must be based on the instantaneous state of the grid. In this paper, we propose a solution based on virtualising the communication infrastructure in the low and medium voltage grid. We evaluate two different approaches. The first approach is based on SDN; an ONOS SDN controller is used to change the behaviour of the communication infrastructure according to information provided by components of the power grid. The second approach uses Coaty and a Mosquitto MQTT broker to deliver messages to the desired endpoint, again based on information from the power grid.

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Pham Huy, Thong. "Các trường của tôn giáo trong đó có Công giáo tham gia góp phần lành mạnh hóa giáo dục Việt Nam." Dong Thap University Journal of Science, no. 42 (February 15, 2020): 67–72. http://dx.doi.org/10.52714/dthu.42.2.2020.769.

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Journal articles on the topic 'ONOS'

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