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SPRING: Scaling, Placement, and Routing of Heterogeneous Services with Flexible Structures. In: <i>5th IEEE International Conference on Network Softwarization (NetSoft) 2019</i>.","ieee":"S. Dräxler and H. Karl, “SPRING: Scaling, Placement, and Routing of Heterogeneous Services with Flexible Structures,” in <i>5th IEEE International Conference on Network Softwarization (NetSoft) 2019</i>, Paris.","chicago":"Dräxler, Sevil, and Holger Karl. “SPRING: Scaling, Placement, and Routing of Heterogeneous Services with Flexible Structures.” In <i>5th IEEE International Conference on Network Softwarization (NetSoft) 2019</i>, n.d.","bibtex":"@inproceedings{Dräxler_Karl, title={SPRING: Scaling, Placement, and Routing of Heterogeneous Services with Flexible Structures}, booktitle={5th IEEE International Conference on Network Softwarization (NetSoft) 2019}, author={Dräxler, Sevil and Karl, Holger} }","short":"S. Dräxler, H. Karl, in: 5th IEEE International Conference on Network Softwarization (NetSoft) 2019, n.d.","mla":"Dräxler, Sevil, and Holger Karl. “SPRING: Scaling, Placement, and Routing of Heterogeneous Services with Flexible Structures.” <i>5th IEEE International Conference on Network Softwarization (NetSoft) 2019</i>.","apa":"Dräxler, S., &#38; Karl, H. (n.d.). SPRING: Scaling, Placement, and Routing of Heterogeneous Services with Flexible Structures. In <i>5th IEEE International Conference on Network Softwarization (NetSoft) 2019</i>. Paris."}},{"status":"public","type":"dissertation","language":[{"iso":"eng"}],"project":[{"name":"SFB 901","_id":"1"},{"name":"SFB 901 - Project Area C","_id":"4"},{"name":"SFB 901 - Subproject C4","_id":"16"}],"_id":"13124","user_id":"477","department":[{"_id":"75"}],"year":"2019","citation":{"apa":"Dräxler, S. (2019). <i>Scaling, placement, and routing for pliable virtualized composed services</i>. Universität Paderborn.","mla":"Dräxler, Sevil. <i>Scaling, Placement, and Routing for Pliable Virtualized Composed Services</i>. Universität Paderborn, 2019.","bibtex":"@book{Dräxler_2019, title={Scaling, placement, and routing for pliable virtualized composed services}, publisher={Universität Paderborn}, author={Dräxler, Sevil}, year={2019} }","short":"S. Dräxler, Scaling, Placement, and Routing for Pliable Virtualized Composed Services, Universität Paderborn, 2019.","ieee":"S. Dräxler, <i>Scaling, placement, and routing for pliable virtualized composed services</i>. Universität Paderborn, 2019.","chicago":"Dräxler, Sevil. <i>Scaling, Placement, and Routing for Pliable Virtualized Composed Services</i>. Universität Paderborn, 2019.","ama":"Dräxler S. <i>Scaling, Placement, and Routing for Pliable Virtualized Composed Services</i>. Universität Paderborn; 2019."},"title":"Scaling, placement, and routing for pliable virtualized composed services","publisher":"Universität Paderborn","date_updated":"2022-01-06T06:51:28Z","supervisor":[{"full_name":"Karl, Holger","id":"126","last_name":"Karl","first_name":"Holger"}],"author":[{"last_name":"Dräxler","full_name":"Dräxler, Sevil","id":"31764","first_name":"Sevil"}],"date_created":"2019-09-03T12:16:32Z"},{"file":[{"success":1,"relation":"main_file","content_type":"application/pdf","file_size":2211450,"file_name":"08460029.pdf","access_level":"closed","file_id":"6195","date_updated":"2018-12-12T15:18:12Z","date_created":"2018-12-12T15:18:12Z","creator":"ups"},{"file_size":3445650,"file_id":"6968","file_name":"NetSoft18_RIS.pdf","access_level":"open_access","date_updated":"2019-01-24T10:17:00Z","creator":"sevilmeh","date_created":"2019-01-24T10:17:00Z","relation":"main_file","content_type":"application/pdf"}],"abstract":[{"lang":"eng","text":"Understanding the behavior of the components of service function chains (SFCs) in different load situations is important for efficient and automatic management and orches- tration of services. For this purpose and for practical research in network function virtualization in general, there is a great need for benchmarks and experimental data. In this paper, we describe our experiments for characterizing the relationship between resource demands of virtual network functions (VNFs) and the expected performance of the SFC, considering the individual performance of the VNFs as well as the interdependencies among VNFs within the SFC. We have designed our experiments focusing on video streaming, an important application in this context. We present examples of models for predicting the interdependence between resource demands and performance characteristics of SFCs using support vector regression and polynomial regression models. We also show practical evidence from our experiments that VNFs need to be benchmarked in their final chain setup, rather than individually, to capture important interdependencies that affect their performance. The data gathered from our experiments is publicly available."}],"publication":"4th IEEE International Conference on Network Softwarization (NetSoft 2018)","language":[{"iso":"eng"}],"ddc":["004"],"year":"2018","title":"Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case","date_created":"2018-04-24T12:11:36Z","publisher":"IEEE","status":"public","type":"conference","file_date_updated":"2019-01-24T10:17:00Z","user_id":"31764","department":[{"_id":"75"}],"project":[{"grant_number":"762057","name":"5G Programmable Infrastructure Converging disaggregated neTwork and compUte Resources","_id":"23"},{"_id":"1","name":"SFB 901"},{"name":"SFB 901 - Project Area C","_id":"4"},{"_id":"16","name":"SFB 901 - Subproject C4"}],"_id":"2480","citation":{"short":"S. Dräxler, M. Peuster, M. Illian, H. Karl, in: 4th IEEE International Conference on Network Softwarization (NetSoft 2018), IEEE, 2018, pp. 318--322.","bibtex":"@inproceedings{Dräxler_Peuster_Illian_Karl_2018, title={Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case}, DOI={<a href=\"https://doi.org/10.1109/NETSOFT.2018.8460029\">10.1109/NETSOFT.2018.8460029</a>}, booktitle={4th IEEE International Conference on Network Softwarization (NetSoft 2018)}, publisher={IEEE}, author={Dräxler, Sevil and Peuster, Manuel and Illian, Marvin and Karl, Holger}, year={2018}, pages={318--322} }","mla":"Dräxler, Sevil, et al. “Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case.” <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i>, IEEE, 2018, pp. 318--322, doi:<a href=\"https://doi.org/10.1109/NETSOFT.2018.8460029\">10.1109/NETSOFT.2018.8460029</a>.","apa":"Dräxler, S., Peuster, M., Illian, M., &#38; Karl, H. (2018). Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case. In <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i> (pp. 318--322). Montreal: IEEE. <a href=\"https://doi.org/10.1109/NETSOFT.2018.8460029\">https://doi.org/10.1109/NETSOFT.2018.8460029</a>","ama":"Dräxler S, Peuster M, Illian M, Karl H. Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case. In: <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i>. IEEE; 2018:318--322. doi:<a href=\"https://doi.org/10.1109/NETSOFT.2018.8460029\">10.1109/NETSOFT.2018.8460029</a>","chicago":"Dräxler, Sevil, Manuel Peuster, Marvin Illian, and Holger Karl. “Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case.” In <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i>, 318--322. IEEE, 2018. <a href=\"https://doi.org/10.1109/NETSOFT.2018.8460029\">https://doi.org/10.1109/NETSOFT.2018.8460029</a>.","ieee":"S. Dräxler, M. Peuster, M. Illian, and H. Karl, “Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case,” in <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i>, Montreal, 2018, pp. 318--322."},"page":"318--322","has_accepted_license":"1","conference":{"location":"Montreal","end_date":"2018-07-29","start_date":"2018-07-25","name":"4th IEEE International Conference on Network Softwarization (NetSoft 2018)"},"doi":"10.1109/NETSOFT.2018.8460029","author":[{"first_name":"Sevil","id":"31764","full_name":"Dräxler, Sevil","last_name":"Dräxler"},{"first_name":"Manuel","id":"13271","full_name":"Peuster, Manuel","last_name":"Peuster"},{"last_name":"Illian","full_name":"Illian, Marvin","first_name":"Marvin"},{"first_name":"Holger","last_name":"Karl","id":"126","full_name":"Karl, Holger"}],"oa":"1","date_updated":"2022-01-06T06:56:37Z"},{"publication_status":"published","has_accepted_license":"1","citation":{"ieee":"S. Dräxler, S. B. Schneider, and H. Karl, “ Scaling and Placing Bidirectional Services with Stateful Virtual and Physical Network Functions,” in <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i>, Montreal, 2018, pp. 123--131.","chicago":"Dräxler, Sevil, Stefan Balthasar Schneider, and Holger Karl. “ Scaling and Placing Bidirectional Services with Stateful Virtual and Physical Network Functions.” In <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i>, 123--131. IEEE, 2018.","ama":"Dräxler S, Schneider SB, Karl H.  Scaling and Placing Bidirectional Services with Stateful Virtual and Physical Network Functions. In: <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i>. IEEE; 2018:123--131.","apa":"Dräxler, S., Schneider, S. B., &#38; Karl, H. (2018).  Scaling and Placing Bidirectional Services with Stateful Virtual and Physical Network Functions. In <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i> (pp. 123--131). Montreal: IEEE.","mla":"Dräxler, Sevil, et al. “ Scaling and Placing Bidirectional Services with Stateful Virtual and Physical Network Functions.” <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i>, IEEE, 2018, pp. 123--131.","bibtex":"@inproceedings{Dräxler_Schneider_Karl_2018, title={ Scaling and Placing Bidirectional Services with Stateful Virtual and Physical Network Functions}, booktitle={4th IEEE International Conference on Network Softwarization (NetSoft 2018)}, publisher={IEEE}, author={Dräxler, Sevil and Schneider, Stefan Balthasar and Karl, Holger}, year={2018}, pages={123--131} }","short":"S. Dräxler, S.B. Schneider, H. Karl, in: 4th IEEE International Conference on Network Softwarization (NetSoft 2018), IEEE, 2018, pp. 123--131."},"page":"123--131","author":[{"first_name":"Sevil","id":"31764","full_name":"Dräxler, Sevil","last_name":"Dräxler"},{"id":"35343","full_name":"Schneider, Stefan Balthasar","orcid":"0000-0001-8210-4011","last_name":"Schneider","first_name":"Stefan Balthasar"},{"full_name":"Karl, Holger","id":"126","last_name":"Karl","first_name":"Holger"}],"date_updated":"2022-01-06T06:56:38Z","oa":"1","conference":{"location":"Montreal","name":"4th IEEE International Conference on Network Softwarization (NetSoft 2018)"},"type":"conference","status":"public","urn":"24814","user_id":"477","department":[{"_id":"75"}],"project":[{"_id":"28","name":"5G Development and validation platform for global industry-specific network services and Apps","grant_number":"761493"},{"name":"SFB 901","_id":"1"},{"_id":"4","name":"SFB 901 - Project Area C"},{"name":"SFB 901 - Subproject C4","_id":"16"}],"_id":"2481","file_date_updated":"2018-06-25T07:40:57Z","year":"2018","date_created":"2018-04-24T12:14:00Z","publisher":"IEEE","title":" Scaling and Placing Bidirectional Services with Stateful Virtual and Physical Network Functions","publication":"4th IEEE International Conference on Network Softwarization (NetSoft 2018)","file":[{"relation":"main_file","content_type":"application/pdf","file_size":1471937,"access_level":"open_access","file_name":"RIS.pdf","file_id":"3319","date_updated":"2018-06-25T07:40:57Z","creator":"sevilmeh","date_created":"2018-06-25T07:40:57Z"}],"abstract":[{"lang":"eng","text":"Network function virtualization requires scaling and placement, deciding the number and the location of function instances. Current approaches are limited in flexibility and practical applicability. Specifically, we study dynamic, single-step, joint scaling and placement of network services with bidirectional flows traversing Physical or Virtual Network Functions (VNFs) and returning to their sources. We develop models to support stateful components and legacy network functions with fixed locations in these network services as well as the possibility of reusing VNFs across network services. We formalize the problem of jointly scaling and placing such network services as a mixed- integer linear program (MILP). We show that this problem is NP-complete and also present a heuristic algorithm to find good solutions in short time. In an extensive evaluation with realistic scenarios, we investigate the capabilities of the two approaches."}],"language":[{"iso":"eng"}],"ddc":["040"]},{"language":[{"iso":"eng"}],"file_date_updated":"2019-01-24T10:29:12Z","ddc":["000"],"user_id":"31764","project":[{"grant_number":"762057","name":"5G Programmable Infrastructure Converging disaggregated neTwork and compUte Resources","_id":"23"}],"_id":"2482","file":[{"content_type":"application/pdf","relation":"main_file","date_updated":"2019-01-24T10:29:12Z","date_created":"2019-01-24T10:29:12Z","creator":"sevilmeh","file_size":215571,"file_id":"6969","file_name":"eucnc18_RIS.pdf","access_level":"open_access"}],"status":"public","type":"conference","publication":"27th European Conference on Networks and Communications (EUCNC 2018)","conference":{"location":"Ljubljana","end_date":"2018-07-21","start_date":"2018-07-18","name":"27th European Conference on Networks and Communications (EUCNC 2018)"},"title":"5G OS: Control and Orchestration of Services on Multi-Domain Heterogeneous 5G Infrastructures","author":[{"first_name":"Sevil","last_name":"Dräxler","full_name":"Dräxler, Sevil","id":"31764"},{"full_name":"Karl, Holger","id":"126","last_name":"Karl","first_name":"Holger"},{"last_name":"Razzaghi Kouchaksaraei","full_name":"Razzaghi Kouchaksaraei, Hadi","id":"60845","first_name":"Hadi"},{"last_name":"Machwe","full_name":"Machwe, Azahar","first_name":"Azahar"},{"full_name":"Dent-Young, Crispin","last_name":"Dent-Young","first_name":"Crispin"},{"first_name":"Kostas","last_name":"Katsalis","full_name":"Katsalis, Kostas"},{"first_name":"Konstantinos","full_name":"Samdanis, Konstantinos","last_name":"Samdanis"}],"date_created":"2018-04-24T12:17:15Z","oa":"1","date_updated":"2022-01-06T06:56:38Z","citation":{"chicago":"Dräxler, Sevil, Holger Karl, Hadi Razzaghi Kouchaksaraei, Azahar Machwe, Crispin Dent-Young, Kostas Katsalis, and Konstantinos Samdanis. “5G OS: Control and Orchestration of Services on Multi-Domain Heterogeneous 5G Infrastructures.” In <i>27th European Conference on Networks and Communications (EUCNC 2018)</i>, n.d.","ieee":"S. Dräxler <i>et al.</i>, “5G OS: Control and Orchestration of Services on Multi-Domain Heterogeneous 5G Infrastructures,” in <i>27th European Conference on Networks and Communications (EUCNC 2018)</i>, Ljubljana.","ama":"Dräxler S, Karl H, Razzaghi Kouchaksaraei H, et al. 5G OS: Control and Orchestration of Services on Multi-Domain Heterogeneous 5G Infrastructures. In: <i>27th European Conference on Networks and Communications (EUCNC 2018)</i>.","apa":"Dräxler, S., Karl, H., Razzaghi Kouchaksaraei, H., Machwe, A., Dent-Young, C., Katsalis, K., &#38; Samdanis, K. (n.d.). 5G OS: Control and Orchestration of Services on Multi-Domain Heterogeneous 5G Infrastructures. In <i>27th European Conference on Networks and Communications (EUCNC 2018)</i>. Ljubljana.","mla":"Dräxler, Sevil, et al. “5G OS: Control and Orchestration of Services on Multi-Domain Heterogeneous 5G Infrastructures.” <i>27th European Conference on Networks and Communications (EUCNC 2018)</i>.","bibtex":"@inproceedings{Dräxler_Karl_Razzaghi Kouchaksaraei_Machwe_Dent-Young_Katsalis_Samdanis, title={5G OS: Control and Orchestration of Services on Multi-Domain Heterogeneous 5G Infrastructures}, booktitle={27th European Conference on Networks and Communications (EUCNC 2018)}, author={Dräxler, Sevil and Karl, Holger and Razzaghi Kouchaksaraei, Hadi and Machwe, Azahar and Dent-Young, Crispin and Katsalis, Kostas and Samdanis, Konstantinos} }","short":"S. Dräxler, H. Karl, H. Razzaghi Kouchaksaraei, A. Machwe, C. Dent-Young, K. Katsalis, K. Samdanis, in: 27th European Conference on Networks and Communications (EUCNC 2018), n.d."},"year":"2018","publication_status":"accepted","has_accepted_license":"1"},{"date_created":"2018-04-24T12:22:40Z","author":[{"id":"31764","full_name":"Dräxler, Sevil","last_name":"Dräxler","first_name":"Sevil"},{"first_name":"Manuel","last_name":"Peuster","id":"13271","full_name":"Peuster, Manuel"},{"last_name":"Illian","full_name":"Illian, Marvin","first_name":"Marvin"},{"last_name":"Karl","id":"126","full_name":"Karl, Holger","first_name":"Holger"}],"date_updated":"2022-01-06T06:56:38Z","oa":"1","main_file_link":[{"url":"http://www.infosys.tuwien.ac.at/docs/proceedings.pdf#page=14","open_access":"1"}],"title":"Towards Predicting Resource Demands and Performance of Distributed Cloud Services","related_material":{"link":[{"relation":"confirmation","url":"http://repositum.tuwien.ac.at/obvutwoa/content/titleinfo/2514843"}]},"publication_status":"published","citation":{"apa":"Dräxler, S., Peuster, M., Illian, M., &#38; Karl, H. (2018). <i>Towards Predicting Resource Demands and Performance of Distributed Cloud Services</i>. Wien, Darmstadt.","mla":"Dräxler, Sevil, et al. <i>Towards Predicting Resource Demands and Performance of Distributed Cloud Services</i>. 2018.","short":"S. Dräxler, M. Peuster, M. Illian, H. Karl, Towards Predicting Resource Demands and Performance of Distributed Cloud Services, Wien, Darmstadt, 2018.","bibtex":"@book{Dräxler_Peuster_Illian_Karl_2018, place={Wien, Darmstadt}, series={KuVS-Fachgespräch Fog Computing 2018}, title={Towards Predicting Resource Demands and Performance of Distributed Cloud Services}, author={Dräxler, Sevil and Peuster, Manuel and Illian, Marvin and Karl, Holger}, year={2018}, collection={KuVS-Fachgespräch Fog Computing 2018} }","ama":"Dräxler S, Peuster M, Illian M, Karl H. <i>Towards Predicting Resource Demands and Performance of Distributed Cloud Services</i>. Wien, Darmstadt; 2018.","chicago":"Dräxler, Sevil, Manuel Peuster, Marvin Illian, and Holger Karl. <i>Towards Predicting Resource Demands and Performance of Distributed Cloud Services</i>. KuVS-Fachgespräch Fog Computing 2018. Wien, Darmstadt, 2018.","ieee":"S. Dräxler, M. Peuster, M. Illian, and H. Karl, <i>Towards Predicting Resource Demands and Performance of Distributed Cloud Services</i>. Wien, Darmstadt, 2018."},"place":"Wien, Darmstadt","year":"2018","department":[{"_id":"75"}],"user_id":"31764","series_title":"KuVS-Fachgespräch Fog Computing 2018","_id":"2483","project":[{"name":"5G Programmable Infrastructure Converging disaggregated neTwork and compUte Resources","_id":"23","grant_number":"762057"},{"name":"SFB 901","_id":"1"},{"name":"SFB 901 - Project Area C","_id":"4"},{"name":"SFB 901 - Subproject C4","_id":"16"}],"language":[{"iso":"eng"}],"ddc":["000"],"type":"report","status":"public","abstract":[{"lang":"eng","text":"Understanding the behavior of distributed cloud service components in different load situations is important for efficient and automatic management and orchestration of these services. For this purpose and for practical research in distributed cloud computing in general, there is need for benchmarks and experimental data. In this paper, we describe our experiments for characterizing the relationship between resource demands of application components and the expected performance of applica- tions. We present initial results for predicting the interdependence between resource demands and performance characteristics using support vector regression and polynomial regression models. The data gathered from our experiments is publicly available."}]},{"title":"Programmable and Flexible Management and Orchestration of Virtualized Network Functions","date_created":"2018-05-07T12:30:54Z","publisher":"IEEE","year":"2018","language":[{"iso":"eng"}],"ddc":["004"],"file":[{"relation":"main_file","content_type":"application/pdf","file_size":183859,"file_id":"3357","file_name":"specific_management.pdf","access_level":"open_access","date_updated":"2018-06-25T13:58:12Z","creator":"hadik3r","date_created":"2018-06-25T13:52:03Z"}],"abstract":[{"text":"Supporting the vast variety of network services’ management and orchestration requirements is one of the main challenges that Network Function Virtualization (NFV) is dealing with. While general management requirements such as Virtual Network Function (VNF) resource requirements can be specified by the service developers using service descriptors, specific management operations like VNF-specific configuration cannot be performed by these descriptors. On the other hand, it is inefficient and also very challenging for Management and Orchestration (MANO) frameworks to provide all specific-management operations for every individual network service and their constituent VNFs. To mitigate this issue, we propose the use of service-specific programs called Specific Managers (SMs) that can customize management and orchestration of network services and also extend the capability of MANO frameworks to support per-service management and orchestration. The results of our evaluation show that the higher flexibility and programmability enabled by SMs improve the performance of the service performance and also utilises the service provider resources more efficiently.","lang":"eng"}],"publication":"2018 European Conference on Networks and Communications (EuCNC)","conference":{"start_date":"2018-06-18","name":"European Conference on Networks and Communications (EUCNC)","location":"Ljubljana, Slovenia","end_date":"2018-06-21"},"main_file_link":[{"open_access":"1"}],"author":[{"last_name":"Razzaghi Kouchaksaraei","id":"60845","full_name":"Razzaghi Kouchaksaraei, Hadi","first_name":"Hadi"},{"first_name":"Sevil","last_name":"Dräxler","id":"31764","full_name":"Dräxler, Sevil"},{"first_name":"Manuel","id":"13271","full_name":"Peuster, Manuel","last_name":"Peuster"},{"first_name":"Holger","last_name":"Karl","full_name":"Karl, Holger","id":"126"}],"oa":"1","date_updated":"2022-01-06T06:57:25Z","citation":{"ieee":"H. Razzaghi Kouchaksaraei, S. Dräxler, M. Peuster, and H. Karl, “Programmable and Flexible Management and Orchestration of Virtualized Network Functions,” in <i>2018 European Conference on Networks and Communications (EuCNC)</i>, Ljubljana, Slovenia.","chicago":"Razzaghi Kouchaksaraei, Hadi, Sevil Dräxler, Manuel Peuster, and Holger Karl. “Programmable and Flexible Management and Orchestration of Virtualized Network Functions.” In <i>2018 European Conference on Networks and Communications (EuCNC)</i>. Ljubljana, Slovenia: IEEE, n.d.","ama":"Razzaghi Kouchaksaraei H, Dräxler S, Peuster M, Karl H. Programmable and Flexible Management and Orchestration of Virtualized Network Functions. In: <i>2018 European Conference on Networks and Communications (EuCNC)</i>. Ljubljana, Slovenia: IEEE.","short":"H. Razzaghi Kouchaksaraei, S. Dräxler, M. Peuster, H. Karl, in: 2018 European Conference on Networks and Communications (EuCNC), IEEE, Ljubljana, Slovenia, n.d.","bibtex":"@inproceedings{Razzaghi Kouchaksaraei_Dräxler_Peuster_Karl, place={Ljubljana, Slovenia}, title={Programmable and Flexible Management and Orchestration of Virtualized Network Functions}, booktitle={2018 European Conference on Networks and Communications (EuCNC)}, publisher={IEEE}, author={Razzaghi Kouchaksaraei, Hadi and Dräxler, Sevil and Peuster, Manuel and Karl, Holger} }","mla":"Razzaghi Kouchaksaraei, Hadi, et al. “Programmable and Flexible Management and Orchestration of Virtualized Network Functions.” <i>2018 European Conference on Networks and Communications (EuCNC)</i>, IEEE.","apa":"Razzaghi Kouchaksaraei, H., Dräxler, S., Peuster, M., &#38; Karl, H. (n.d.). Programmable and Flexible Management and Orchestration of Virtualized Network Functions. In <i>2018 European Conference on Networks and Communications (EuCNC)</i>. Ljubljana, Slovenia: IEEE."},"place":"Ljubljana, Slovenia","has_accepted_license":"1","publication_status":"accepted","file_date_updated":"2018-06-25T13:58:12Z","department":[{"_id":"34"}],"user_id":"60845","_id":"2666","project":[{"name":"5G Programmable Infrastructure Converging disaggregated neTwork and compUte Resources","_id":"23","grant_number":"762057"}],"status":"public","urn":"26669","type":"conference"},{"type":"journal_article","urn":"31522","status":"public","project":[{"grant_number":"762057","name":"5G Programmable Infrastructure Converging disaggregated neTwork and compUte Resources","_id":"23"},{"_id":"1","name":"SFB 901"},{"_id":"4","name":"SFB 901 - Project Area C"},{"name":"SFB 901 - Subproject C4","_id":"16"}],"_id":"3152","user_id":"31764","department":[{"_id":"75"}],"article_type":"original","file_date_updated":"2019-01-21T16:12:36Z","has_accepted_license":"1","citation":{"short":"S. Dräxler, H. Karl, Z.A. Mann, IEEE Transactions on Network and Service Management (2018).","mla":"Dräxler, Sevil, et al. “JASPER: Joint Optimization of Scaling, Placement, and Routing of Virtual Network Services.” <i>IEEE Transactions on Network and Service Management</i>, IEEE, 2018, doi:<a href=\"https://doi.org/10.1109/TNSM.2018.2846572\">10.1109/TNSM.2018.2846572</a>.","bibtex":"@article{Dräxler_Karl_Mann_2018, title={JASPER: Joint Optimization of Scaling, Placement, and Routing of Virtual Network Services}, DOI={<a href=\"https://doi.org/10.1109/TNSM.2018.2846572\">10.1109/TNSM.2018.2846572</a>}, journal={IEEE Transactions on Network and Service Management}, publisher={IEEE}, author={Dräxler, Sevil and Karl, Holger and Mann, Zoltan Adam}, year={2018} }","apa":"Dräxler, S., Karl, H., &#38; Mann, Z. A. (2018). JASPER: Joint Optimization of Scaling, Placement, and Routing of Virtual Network Services. <i>IEEE Transactions on Network and Service Management</i>. <a href=\"https://doi.org/10.1109/TNSM.2018.2846572\">https://doi.org/10.1109/TNSM.2018.2846572</a>","chicago":"Dräxler, Sevil, Holger Karl, and Zoltan Adam Mann. “JASPER: Joint Optimization of Scaling, Placement, and Routing of Virtual Network Services.” <i>IEEE Transactions on Network and Service Management</i>, 2018. <a href=\"https://doi.org/10.1109/TNSM.2018.2846572\">https://doi.org/10.1109/TNSM.2018.2846572</a>.","ieee":"S. Dräxler, H. Karl, and Z. A. Mann, “JASPER: Joint Optimization of Scaling, Placement, and Routing of Virtual Network Services,” <i>IEEE Transactions on Network and Service Management</i>, 2018.","ama":"Dräxler S, Karl H, Mann ZA. JASPER: Joint Optimization of Scaling, Placement, and Routing of Virtual Network Services. <i>IEEE Transactions on Network and Service Management</i>. 2018. doi:<a href=\"https://doi.org/10.1109/TNSM.2018.2846572\">10.1109/TNSM.2018.2846572</a>"},"date_updated":"2022-01-06T06:59:00Z","oa":"1","author":[{"last_name":"Dräxler","full_name":"Dräxler, Sevil","id":"31764","first_name":"Sevil"},{"first_name":"Holger","full_name":"Karl, Holger","id":"126","last_name":"Karl"},{"first_name":"Zoltan Adam","full_name":"Mann, Zoltan Adam","last_name":"Mann"}],"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1711.10839"}],"doi":"10.1109/TNSM.2018.2846572","publication":"IEEE Transactions on Network and Service Management","abstract":[{"lang":"eng","text":"To adapt to continuously changing workloads in networks, components of the running network services may need to be replicated (scaling the network service) and allocated to physical resources (placement) dynamically, also necessitating dynamic re-routing of flows between service components. In this paper, we propose JASPER, a fully automated approach to jointly optimizing scaling, placement, and routing for complex network services, consisting of multiple (virtualized) components. JASPER handles multiple network services that share the same substrate network; services can be dynamically added or removed and dynamic workload changes are handled. Our approach lets service designers specify their services on a high level of abstraction using service templates. JASPER automatically makes scaling, placement and routing decisions, enabling quick reaction to changes. We formalize the problem, analyze its complexity, and develop two algorithms to solve it. Extensive empirical results show the applicability and effectiveness of the proposed approach."}],"file":[{"content_type":"application/pdf","success":1,"relation":"main_file","date_updated":"2018-11-02T15:25:49Z","date_created":"2018-11-02T15:25:49Z","creator":"ups","file_size":1767054,"access_level":"closed","file_id":"5302","file_name":"08382313.pdf"},{"file_size":2878350,"access_level":"open_access","file_id":"6950","file_name":"TNSM2846572_RIS.pdf","date_updated":"2019-01-21T16:12:36Z","creator":"sevilmeh","date_created":"2019-01-21T16:12:36Z","relation":"main_file","content_type":"application/pdf"}],"ddc":["000"],"language":[{"iso":"eng"}],"year":"2018","publisher":"IEEE","date_created":"2018-06-11T06:55:05Z","title":"JASPER: Joint Optimization of Scaling, Placement, and Routing of Virtual Network Services"},{"user_id":"35343","department":[{"_id":"75"}],"project":[{"_id":"28","name":"5G Development and validation platform for global industry-specific network services and Apps","grant_number":"761493"},{"name":"SFB 901","_id":"1"},{"name":"SFB 901 - Project Area C","_id":"4"},{"_id":"16","name":"SFB 901 - Subproject C4"}],"_id":"6970","file_date_updated":"2019-01-24T13:53:16Z","language":[{"iso":"eng"}],"ddc":["040"],"type":"conference","publication":"IEEE Global Communications Conference (GLOBECOM 2018)","file":[{"content_type":"application/pdf","relation":"main_file","date_created":"2019-01-24T13:53:16Z","creator":"stschn","date_updated":"2019-01-24T13:53:16Z","file_id":"6971","access_level":"open_access","file_name":"preprint_ris.pdf","file_size":422196}],"status":"public","abstract":[{"lang":"eng","text":"Dynamic allocation of resources is a key feature in network function virtualization (NFV), enabling flexible adjustment of slices and contained network services to ever-changing service demands. \r\nConsidering resource allocation across the entire network, many authors have proposed approaches to optimize the placement and chaining of virtual network function (VNF) instances and the allocation of resources to these VNF instances. In doing so, various optimization objectives are conceivable, e.g., minimizing certain required resources or the end-to-end delay of the placed services.\r\n\r\nIn this paper, we investigate the relationship between four typical optimization objectives when coordinating the placement and resource allocation of chained VNF instances. We observe an interesting trade-off between minimizing the overhead of starting/stopping VNF instances and all other objectives when adapting to changed service demands."}],"date_created":"2019-01-24T13:53:22Z","author":[{"full_name":"Schneider, Stefan Balthasar","id":"35343","orcid":"0000-0001-8210-4011","last_name":"Schneider","first_name":"Stefan Balthasar"},{"first_name":"Sevil","last_name":"Dräxler","id":"31764","full_name":"Dräxler, Sevil"},{"first_name":"Holger","full_name":"Karl, Holger","id":"126","last_name":"Karl"}],"date_updated":"2022-01-06T07:03:24Z","oa":"1","publisher":"IEEE","conference":{"name":"IEEE Global Communications Conference (GLOBECOM 2018)","location":"Abu Dhabi, UAE"},"title":"Trade-offs in Dynamic Resource Allocation in Network Function Virtualization","has_accepted_license":"1","citation":{"ama":"Schneider SB, Dräxler S, Karl H. Trade-offs in Dynamic Resource Allocation in Network Function Virtualization. In: <i>IEEE Global Communications Conference (GLOBECOM 2018)</i>. IEEE; 2018.","chicago":"Schneider, Stefan Balthasar, Sevil Dräxler, and Holger Karl. “Trade-Offs in Dynamic Resource Allocation in Network Function Virtualization.” In <i>IEEE Global Communications Conference (GLOBECOM 2018)</i>. IEEE, 2018.","ieee":"S. B. Schneider, S. Dräxler, and H. Karl, “Trade-offs in Dynamic Resource Allocation in Network Function Virtualization,” in <i>IEEE Global Communications Conference (GLOBECOM 2018)</i>, Abu Dhabi, UAE, 2018.","apa":"Schneider, S. B., Dräxler, S., &#38; Karl, H. (2018). Trade-offs in Dynamic Resource Allocation in Network Function Virtualization. In <i>IEEE Global Communications Conference (GLOBECOM 2018)</i>. Abu Dhabi, UAE: IEEE.","bibtex":"@inproceedings{Schneider_Dräxler_Karl_2018, title={Trade-offs in Dynamic Resource Allocation in Network Function Virtualization}, booktitle={IEEE Global Communications Conference (GLOBECOM 2018)}, publisher={IEEE}, author={Schneider, Stefan Balthasar and Dräxler, Sevil and Karl, Holger}, year={2018} }","mla":"Schneider, Stefan Balthasar, et al. “Trade-Offs in Dynamic Resource Allocation in Network Function Virtualization.” <i>IEEE Global Communications Conference (GLOBECOM 2018)</i>, IEEE, 2018.","short":"S.B. Schneider, S. Dräxler, H. Karl, in: IEEE Global Communications Conference (GLOBECOM 2018), IEEE, 2018."},"year":"2018"},{"publication":"2018 4th IEEE Conference on Network Softwarization and Workshops (NetSoft)","type":"conference","status":"public","user_id":"44169","_id":"30858","language":[{"iso":"eng"}],"publication_status":"published","citation":{"apa":"Dräxler, S., Peuster, M., Illian, M., &#38; Karl, H. (2018). Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case. <i>2018 4th IEEE Conference on Network Softwarization and Workshops (NetSoft)</i>. <a href=\"https://doi.org/10.1109/netsoft.2018.8460029\">https://doi.org/10.1109/netsoft.2018.8460029</a>","bibtex":"@inproceedings{Dräxler_Peuster_Illian_Karl_2018, title={Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case}, DOI={<a href=\"https://doi.org/10.1109/netsoft.2018.8460029\">10.1109/netsoft.2018.8460029</a>}, booktitle={2018 4th IEEE Conference on Network Softwarization and Workshops (NetSoft)}, publisher={IEEE}, author={Dräxler, Sevil and Peuster, Manuel and Illian, Marvin and Karl, Holger}, year={2018} }","short":"S. Dräxler, M. Peuster, M. Illian, H. Karl, in: 2018 4th IEEE Conference on Network Softwarization and Workshops (NetSoft), IEEE, 2018.","mla":"Dräxler, Sevil, et al. “Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case.” <i>2018 4th IEEE Conference on Network Softwarization and Workshops (NetSoft)</i>, IEEE, 2018, doi:<a href=\"https://doi.org/10.1109/netsoft.2018.8460029\">10.1109/netsoft.2018.8460029</a>.","ieee":"S. Dräxler, M. Peuster, M. Illian, and H. Karl, “Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case,” 2018, doi: <a href=\"https://doi.org/10.1109/netsoft.2018.8460029\">10.1109/netsoft.2018.8460029</a>.","chicago":"Dräxler, Sevil, Manuel Peuster, Marvin Illian, and Holger Karl. “Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case.” In <i>2018 4th IEEE Conference on Network Softwarization and Workshops (NetSoft)</i>. IEEE, 2018. <a href=\"https://doi.org/10.1109/netsoft.2018.8460029\">https://doi.org/10.1109/netsoft.2018.8460029</a>.","ama":"Dräxler S, Peuster M, Illian M, Karl H. Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case. In: <i>2018 4th IEEE Conference on Network Softwarization and Workshops (NetSoft)</i>. IEEE; 2018. doi:<a href=\"https://doi.org/10.1109/netsoft.2018.8460029\">10.1109/netsoft.2018.8460029</a>"},"year":"2018","author":[{"id":"31764","full_name":"Dräxler, Sevil","last_name":"Dräxler","first_name":"Sevil"},{"first_name":"Manuel","last_name":"Peuster","full_name":"Peuster, Manuel","id":"13271"},{"orcid":"0009-0007-2992-8346","last_name":"Illian","id":"44169","full_name":"Illian, Marvin","first_name":"Marvin"},{"full_name":"Karl, Holger","id":"126","last_name":"Karl","first_name":"Holger"}],"date_created":"2022-04-08T06:12:20Z","publisher":"IEEE","date_updated":"2025-09-12T11:17:05Z","doi":"10.1109/netsoft.2018.8460029","title":"Generating Resource and Performance Models for Service Function Chains: The Video Streaming Case"},{"status":"public","editor":[{"full_name":"Dräxler, Sevil","id":"31764","last_name":"Dräxler","first_name":"Sevil"},{"first_name":"Manuel","full_name":"Peuster, Manuel","id":"13271","last_name":"Peuster"},{"orcid":"0009-0007-2992-8346","last_name":"Illian","id":"44169","full_name":"Illian, Marvin","first_name":"Marvin"},{"last_name":"Karl","full_name":"Karl, Holger","id":"126","first_name":"Holger"}],"type":"conference_editor","language":[{"iso":"eng"}],"user_id":"44169","_id":"61268","citation":{"ama":"Dräxler S, Peuster M, Illian M, Karl H, eds. <i>Towards Predicting Resource Demands and Performance of Distributed Cloud Services</i>.; 2018.","ieee":"S. Dräxler, M. Peuster, M. Illian, and H. Karl, Eds., <i>Towards Predicting Resource Demands and Performance of Distributed Cloud Services</i>. 2018.","chicago":"Dräxler, Sevil, Manuel Peuster, Marvin Illian, and Holger Karl, eds. <i>Towards Predicting Resource Demands and Performance of Distributed Cloud Services</i>, 2018.","apa":"Dräxler, S., Peuster, M., Illian, M., &#38; Karl, H. (Eds.). (2018). <i>Towards Predicting Resource Demands and Performance of Distributed Cloud Services</i>.","bibtex":"@book{Dräxler_Peuster_Illian_Karl_2018, title={Towards Predicting Resource Demands and Performance of Distributed Cloud Services}, year={2018} }","short":"S. Dräxler, M. Peuster, M. Illian, H. Karl, eds., Towards Predicting Resource Demands and Performance of Distributed Cloud Services, 2018.","mla":"Dräxler, Sevil, et al., editors. <i>Towards Predicting Resource Demands and Performance of Distributed Cloud Services</i>. 2018."},"year":"2018","conference":{"end_date":"2018-03-08","location":"Darmstadt, Germany","name":"KuVS-Fachgespräch Fog Computing 2018","start_date":"2018-03-08"},"main_file_link":[{"open_access":"1","url":"https://dsg.tuwien.ac.at/docs/proceedings.pdf#page=14"}],"title":"Towards Predicting Resource Demands and Performance of Distributed Cloud Services","date_created":"2025-09-12T11:46:28Z","oa":"1","date_updated":"2025-09-12T11:46:33Z"},{"ddc":["040"],"publication":"International Journal of Network Management","abstract":[{"text":"Network function virtualization and software-defined networking allow services consisting of virtual network functions to be designed and implemented with great flexibility by facilitating automatic deployments, migrations, and reconfigurations for services and their components. For extended flexibility, we go beyond seeing services as a fixed chain of functions. We define the service structure in a flexible way that enables changing the order of functions in case the functionality of the service is not influenced by this, and propose a YANG data model for expressing this flexibility. Flexible structures allow the network orchestration system to choose the optimal composition of service components that for example gives the best results for placement of services in the network. When number of flexible services and number of components in each service increase, combinatorial explosion limits the practical use of this flexibility. In this paper, we describe a selection heuristic that gives a Pareto set of the possible compositions of a service as well as possible combinations of different services, with respect to different optimization objectives. Moreover, we present a heuristic algorithm for placement of a combination of services, which aims at placing service components along shortest paths that have enough capacity for accommodating the services. By applying these solutions, we show that allowing flexibility in the service structure is feasible.","lang":"eng"}],"file":[{"date_updated":"2018-06-13T09:15:42Z","date_created":"2018-03-21T13:18:13Z","creator":"florida","file_size":2765738,"file_name":"58-preprint-ijnm.pdf","file_id":"1579","access_level":"open_access","content_type":"application/pdf","relation":"hidden"},{"access_level":"open_access","file_id":"3197","file_name":"58-accepted-ijnm.pdf","file_size":2766920,"date_created":"2018-06-13T09:22:37Z","creator":"sevilmeh","date_updated":"2018-06-13T09:22:37Z","relation":"main_file","content_type":"application/pdf"}],"publisher":"Wiley Online Library","date_created":"2017-10-17T12:41:02Z","title":"Specification, Composition, and Placement of Network Services with Flexible Structures","issue":"2","year":"2017","project":[{"name":"SFB 901","_id":"1"},{"_id":"16","name":"SFB 901 - Subprojekt C4"},{"_id":"4","name":"SFB 901 - Project Area C"},{"call_identifier":"5G PPP Phase 1","name":"SONATA NFV: Agile Service Development and Orchestration in 5G Virtualized Networks","_id":"25","grant_number":"671517"}],"_id":"58","user_id":"477","department":[{"_id":"75"}],"file_date_updated":"2018-06-13T09:22:37Z","type":"journal_article","urn":"582","status":"public","oa":"1","date_updated":"2022-01-06T07:02:42Z","author":[{"last_name":"Dräxler","full_name":"Dräxler, Sevil","id":"31764","first_name":"Sevil"},{"first_name":"Holger","last_name":"Karl","id":"126","full_name":"Karl, Holger"}],"doi":"10.1002/nem.1963","has_accepted_license":"1","citation":{"ieee":"S. Dräxler and H. Karl, “Specification, Composition, and Placement of Network Services with Flexible Structures,” <i>International Journal of Network Management</i>, no. 2, pp. 1--16, 2017.","chicago":"Dräxler, Sevil, and Holger Karl. “Specification, Composition, and Placement of Network Services with Flexible Structures.” <i>International Journal of Network Management</i>, no. 2 (2017): 1--16. <a href=\"https://doi.org/10.1002/nem.1963\">https://doi.org/10.1002/nem.1963</a>.","ama":"Dräxler S, Karl H. Specification, Composition, and Placement of Network Services with Flexible Structures. <i>International Journal of Network Management</i>. 2017;(2):1--16. doi:<a href=\"https://doi.org/10.1002/nem.1963\">10.1002/nem.1963</a>","apa":"Dräxler, S., &#38; Karl, H. (2017). Specification, Composition, and Placement of Network Services with Flexible Structures. <i>International Journal of Network Management</i>, (2), 1--16. <a href=\"https://doi.org/10.1002/nem.1963\">https://doi.org/10.1002/nem.1963</a>","bibtex":"@article{Dräxler_Karl_2017, title={Specification, Composition, and Placement of Network Services with Flexible Structures}, DOI={<a href=\"https://doi.org/10.1002/nem.1963\">10.1002/nem.1963</a>}, number={2}, journal={International Journal of Network Management}, publisher={Wiley Online Library}, author={Dräxler, Sevil and Karl, Holger}, year={2017}, pages={1--16} }","short":"S. Dräxler, H. Karl, International Journal of Network Management (2017) 1--16.","mla":"Dräxler, Sevil, and Holger Karl. “Specification, Composition, and Placement of Network Services with Flexible Structures.” <i>International Journal of Network Management</i>, no. 2, Wiley Online Library, 2017, pp. 1--16, doi:<a href=\"https://doi.org/10.1002/nem.1963\">10.1002/nem.1963</a>."},"page":"1--16"},{"abstract":[{"lang":"eng","text":"In conventional large-scale networks, creation and management of network services are costly and complex tasks that often consume a lot of resources, including time and manpower. Network softwarization and network function virtualization have been introduced to tackle these problems, aiming at decreasing costs and complexity of implementing new services, maintaining the implemented services, and managing available resources in service provisioning platforms and underlying infrastructures. To experience the full potential of these approaches, innovative development support tools and service provisioning environments are needed. To answer these needs, we introduce the architecture of the open-source SONATA system, a service programming, orchestration, and management framework. We present a development toolchain for virtualized network services, fully integrated with a service platform and orchestration system. We introduce the modular and flexible architecture of our system and discuss its main components and features, such as function- and service-specific managers that allow fine-grained service management, slicing support to facilitate multi-tenancy, recursiveness for improved scalability, and full-featured DevOps support."}],"file":[{"file_size":821211,"file_id":"5270","file_name":"07962785.pdf","access_level":"closed","date_updated":"2018-11-02T14:22:10Z","creator":"ups","date_created":"2018-11-02T14:22:10Z","success":1,"relation":"main_file","content_type":"application/pdf"}],"publication":"2017 IEEE International Conference on Communications Workshops (ICC Workshops)","ddc":["000"],"language":[{"iso":"eng"}],"year":"2017","title":"SONATA: Service programming and orchestration for virtualized software networks","publisher":"IEEE","date_created":"2017-11-22T09:42:59Z","status":"public","type":"conference","file_date_updated":"2018-11-02T14:22:10Z","project":[{"grant_number":"671517","_id":"25","name":"SONATA NFV: Agile Service Development and Orchestration in 5G Virtualized Networks","call_identifier":"5G PPP Phase 1"},{"_id":"1","name":"SFB 901"},{"_id":"4","name":"SFB 901 - Project Area C"},{"name":"SFB 901 - Subproject C4","_id":"16"}],"_id":"717","user_id":"31764","department":[{"_id":"75"}],"citation":{"bibtex":"@inproceedings{Dräxler_Karl_Peuster_Razzaghi Kouchaksaraei_Bredel_Lessmann_Soenen_Tavernier_Mendel-Brin_Xilouris_2017, title={SONATA: Service programming and orchestration for virtualized software networks}, DOI={<a href=\"https://doi.org/10.1109/iccw.2017.7962785\">10.1109/iccw.2017.7962785</a>}, booktitle={2017 IEEE International Conference on Communications Workshops (ICC Workshops)}, publisher={IEEE}, author={Dräxler, Sevil and Karl, Holger and Peuster, Manuel and Razzaghi Kouchaksaraei, Hadi and Bredel, Michael and Lessmann, Johannes and Soenen, Thomas and Tavernier, Wouter and Mendel-Brin, Sharon and Xilouris, George}, year={2017} }","short":"S. Dräxler, H. Karl, M. Peuster, H. Razzaghi Kouchaksaraei, M. Bredel, J. Lessmann, T. Soenen, W. Tavernier, S. Mendel-Brin, G. Xilouris, in: 2017 IEEE International Conference on Communications Workshops (ICC Workshops), IEEE, 2017.","mla":"Dräxler, Sevil, et al. “SONATA: Service Programming and Orchestration for Virtualized Software Networks.” <i>2017 IEEE International Conference on Communications Workshops (ICC Workshops)</i>, IEEE, 2017, doi:<a href=\"https://doi.org/10.1109/iccw.2017.7962785\">10.1109/iccw.2017.7962785</a>.","apa":"Dräxler, S., Karl, H., Peuster, M., Razzaghi Kouchaksaraei, H., Bredel, M., Lessmann, J., … Xilouris, G. (2017). SONATA: Service programming and orchestration for virtualized software networks. In <i>2017 IEEE International Conference on Communications Workshops (ICC Workshops)</i>. Paris, France: IEEE. <a href=\"https://doi.org/10.1109/iccw.2017.7962785\">https://doi.org/10.1109/iccw.2017.7962785</a>","ieee":"S. Dräxler <i>et al.</i>, “SONATA: Service programming and orchestration for virtualized software networks,” in <i>2017 IEEE International Conference on Communications Workshops (ICC Workshops)</i>, Paris, France, 2017.","chicago":"Dräxler, Sevil, Holger Karl, Manuel Peuster, Hadi Razzaghi Kouchaksaraei, Michael Bredel, Johannes Lessmann, Thomas Soenen, Wouter Tavernier, Sharon Mendel-Brin, and George Xilouris. “SONATA: Service Programming and Orchestration for Virtualized Software Networks.” In <i>2017 IEEE International Conference on Communications Workshops (ICC Workshops)</i>. IEEE, 2017. <a href=\"https://doi.org/10.1109/iccw.2017.7962785\">https://doi.org/10.1109/iccw.2017.7962785</a>.","ama":"Dräxler S, Karl H, Peuster M, et al. SONATA: Service programming and orchestration for virtualized software networks. In: <i>2017 IEEE International Conference on Communications Workshops (ICC Workshops)</i>. IEEE; 2017. doi:<a href=\"https://doi.org/10.1109/iccw.2017.7962785\">10.1109/iccw.2017.7962785</a>"},"publication_status":"published","has_accepted_license":"1","publication_identifier":{"isbn":["9781509015252"]},"main_file_link":[{"url":"https://arxiv.org/pdf/1605.05850.pdf","open_access":"1"}],"doi":"10.1109/iccw.2017.7962785","conference":{"location":"Paris, France","end_date":"2017-05-25","start_date":"2017-05-21","name":"2017 IEEE International Conference on Communications Workshops (ICC Workshops)"},"date_updated":"2022-01-06T07:03:28Z","oa":"1","author":[{"first_name":"Sevil","last_name":"Dräxler","id":"31764","full_name":"Dräxler, Sevil"},{"full_name":"Karl, Holger","id":"126","last_name":"Karl","first_name":"Holger"},{"first_name":"Manuel","id":"13271","full_name":"Peuster, Manuel","last_name":"Peuster"},{"first_name":"Hadi","last_name":"Razzaghi Kouchaksaraei","full_name":"Razzaghi Kouchaksaraei, Hadi","id":"60845"},{"first_name":"Michael","last_name":"Bredel","full_name":"Bredel, Michael"},{"full_name":"Lessmann, Johannes","last_name":"Lessmann","first_name":"Johannes"},{"full_name":"Soenen, Thomas","last_name":"Soenen","first_name":"Thomas"},{"full_name":"Tavernier, Wouter","last_name":"Tavernier","first_name":"Wouter"},{"last_name":"Mendel-Brin","full_name":"Mendel-Brin, Sharon","first_name":"Sharon"},{"last_name":"Xilouris","full_name":"Xilouris, George","first_name":"George"}]},{"date_created":"2017-11-27T10:22:25Z","title":"A flexible multi-pop infrastructure emulator for carrier-grade MANO systems","year":"2017","language":[{"iso":"eng"}],"ddc":["000"],"publication":"IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017","file":[{"file_size":963155,"access_level":"open_access","file_id":"3432","file_name":"main_ris.pdf","date_updated":"2018-07-05T11:14:37Z","creator":"peuster","date_created":"2018-07-05T11:14:37Z","relation":"main_file","content_type":"application/pdf"}],"abstract":[{"lang":"eng","text":"Developing a virtualized network service does not only involve the\r\n  implementation and configuration of the network functions it is\r\n  composed of but also its integration and test with management\r\n  solutions that will control the service in its production\r\n  environment. These integration tasks require testbeds that offer the\r\n  needed network function virtualization infrastructure~(NFVI), like OpenStack, introducing a\r\n  lot of management and maintenance overheads. Such testbed setups\r\n  become even more complicated when the multi\r\n  point-of-presence~(PoP) case, with multiple infrastructure\r\n  installations, is considered.\r\n\r\n  In this demo, we showcase an emulation platform that executes\r\n  containerized network services in user-defined multi-PoP\r\n  topologies. The platform does not only allow network service developers to\r\n  locally test their services but also to connect real-world\r\n  management and orchestration solutions to the emulated PoPs. During our\r\n  interactive demonstration we focus on the integration between\r\n  the emulated infrastructure and state-of-the-art orchestration\r\n  solutions like SONATA or OSM."}],"author":[{"first_name":"Manuel","full_name":"Peuster, Manuel","id":"13271","last_name":"Peuster"},{"first_name":"Sevil","last_name":"Dräxler","full_name":"Dräxler, Sevil","id":"31764"},{"first_name":"Hadi","id":"60845","full_name":"Razzaghi Kouchaksaraei, Hadi","last_name":"Razzaghi Kouchaksaraei"},{"last_name":"van Rossem","full_name":"van Rossem, Steven","first_name":"Steven"},{"last_name":"Tavernier","full_name":"Tavernier, Wouter","first_name":"Wouter"},{"first_name":"Holger","last_name":"Karl","full_name":"Karl, Holger","id":"126"}],"oa":"1","date_updated":"2022-01-06T07:03:30Z","doi":"10.1109/NETSOFT.2017.8004250","conference":{"location":"Bologna","name":"IEEE Conference on Network Softwarization"},"publication_status":"published","has_accepted_license":"1","citation":{"chicago":"Peuster, Manuel, Sevil Dräxler, Hadi Razzaghi Kouchaksaraei, Steven van Rossem, Wouter Tavernier, and Holger Karl. “A Flexible Multi-Pop Infrastructure Emulator for Carrier-Grade MANO Systems.” In <i>IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017</i>, 1--3, 2017. <a href=\"https://doi.org/10.1109/NETSOFT.2017.8004250\">https://doi.org/10.1109/NETSOFT.2017.8004250</a>.","ieee":"M. Peuster, S. Dräxler, H. Razzaghi Kouchaksaraei, S. van Rossem, W. Tavernier, and H. Karl, “A flexible multi-pop infrastructure emulator for carrier-grade MANO systems,” in <i>IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017</i>, Bologna, 2017, pp. 1--3.","ama":"Peuster M, Dräxler S, Razzaghi Kouchaksaraei H, van Rossem S, Tavernier W, Karl H. A flexible multi-pop infrastructure emulator for carrier-grade MANO systems. In: <i>IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017</i>. ; 2017:1--3. doi:<a href=\"https://doi.org/10.1109/NETSOFT.2017.8004250\">10.1109/NETSOFT.2017.8004250</a>","bibtex":"@inproceedings{Peuster_Dräxler_Razzaghi Kouchaksaraei_van Rossem_Tavernier_Karl_2017, title={A flexible multi-pop infrastructure emulator for carrier-grade MANO systems}, DOI={<a href=\"https://doi.org/10.1109/NETSOFT.2017.8004250\">10.1109/NETSOFT.2017.8004250</a>}, booktitle={IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017}, author={Peuster, Manuel and Dräxler, Sevil and Razzaghi Kouchaksaraei, Hadi and van Rossem, Steven and Tavernier, Wouter and Karl, Holger}, year={2017}, pages={1--3} }","short":"M. Peuster, S. Dräxler, H. Razzaghi Kouchaksaraei, S. van Rossem, W. Tavernier, H. Karl, in: IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017, 2017, pp. 1--3.","mla":"Peuster, Manuel, et al. “A Flexible Multi-Pop Infrastructure Emulator for Carrier-Grade MANO Systems.” <i>IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017</i>, 2017, pp. 1--3, doi:<a href=\"https://doi.org/10.1109/NETSOFT.2017.8004250\">10.1109/NETSOFT.2017.8004250</a>.","apa":"Peuster, M., Dräxler, S., Razzaghi Kouchaksaraei, H., van Rossem, S., Tavernier, W., &#38; Karl, H. (2017). A flexible multi-pop infrastructure emulator for carrier-grade MANO systems. In <i>IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017</i> (pp. 1--3). Bologna. <a href=\"https://doi.org/10.1109/NETSOFT.2017.8004250\">https://doi.org/10.1109/NETSOFT.2017.8004250</a>"},"page":"1--3","user_id":"13271","department":[{"_id":"75"}],"project":[{"call_identifier":"5G PPP Phase 1","_id":"25","name":"SONATA NFV: Agile Service Development and Orchestration in 5G Virtualized Networks","grant_number":"671517"}],"_id":"723","file_date_updated":"2018-07-05T11:14:37Z","type":"conference","status":"public","urn":"7236"},{"date_updated":"2022-01-06T07:03:59Z","oa":"1","author":[{"full_name":"Dräxler, Sevil","id":"31764","last_name":"Dräxler","first_name":"Sevil"},{"first_name":"Holger","full_name":"Karl, Holger","id":"126","last_name":"Karl"},{"last_name":"Mann","full_name":"Mann, Zoltan Adam","first_name":"Zoltan Adam"}],"date_created":"2017-10-17T12:41:08Z","title":"Joint Optimization of Scaling and Placement of Virtual Network Services","doi":"10.1109/CCGRID.2017.25","has_accepted_license":"1","year":"2017","citation":{"apa":"Dräxler, S., Karl, H., &#38; Mann, Z. A. (2017). Joint Optimization of Scaling and Placement of Virtual Network Services. In <i>Proceedings of the 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017)</i>. <a href=\"https://doi.org/10.1109/CCGRID.2017.25\">https://doi.org/10.1109/CCGRID.2017.25</a>","bibtex":"@inproceedings{Dräxler_Karl_Mann_2017, title={Joint Optimization of Scaling and Placement of Virtual Network Services}, DOI={<a href=\"https://doi.org/10.1109/CCGRID.2017.25\">10.1109/CCGRID.2017.25</a>}, booktitle={Proceedings of the 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017)}, author={Dräxler, Sevil and Karl, Holger and Mann, Zoltan Adam}, year={2017} }","mla":"Dräxler, Sevil, et al. “Joint Optimization of Scaling and Placement of Virtual Network Services.” <i>Proceedings of the 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017)</i>, 2017, doi:<a href=\"https://doi.org/10.1109/CCGRID.2017.25\">10.1109/CCGRID.2017.25</a>.","short":"S. Dräxler, H. Karl, Z.A. Mann, in: Proceedings of the 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017), 2017.","chicago":"Dräxler, Sevil, Holger Karl, and Zoltan Adam Mann. “Joint Optimization of Scaling and Placement of Virtual Network Services.” In <i>Proceedings of the 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017)</i>, 2017. <a href=\"https://doi.org/10.1109/CCGRID.2017.25\">https://doi.org/10.1109/CCGRID.2017.25</a>.","ieee":"S. Dräxler, H. Karl, and Z. A. Mann, “Joint Optimization of Scaling and Placement of Virtual Network Services,” in <i>Proceedings of the 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017)</i>, 2017.","ama":"Dräxler S, Karl H, Mann ZA. Joint Optimization of Scaling and Placement of Virtual Network Services. In: <i>Proceedings of the 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017)</i>. ; 2017. doi:<a href=\"https://doi.org/10.1109/CCGRID.2017.25\">10.1109/CCGRID.2017.25</a>"},"project":[{"_id":"1","name":"SFB 901"},{"_id":"16","name":"SFB 901 - Subprojekt C4"},{"name":"SFB 901 - Project Area C","_id":"4"},{"grant_number":"671517","name":"SONATA NFV: Agile Service Development and Orchestration in 5G Virtualized Networks","_id":"25","call_identifier":"5G PPP Phase 1"}],"_id":"87","user_id":"31764","department":[{"_id":"75"}],"ddc":["040"],"file_date_updated":"2018-06-25T08:07:43Z","type":"conference","publication":"Proceedings of the 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017)","urn":"873","abstract":[{"lang":"eng","text":"Management of complex network services requires flexible and efficient service provisioning as well as optimized handling of continuous changes in the workload of the service.To adapt to changes in the demand, service components need to be replicated (scaling) and allocated to physical resources (placement) dynamically. In this paper, we propose a fullyautomated approach to the joint optimization problem of scaling and placement, enabling quick reaction to changes. We formalize the problem, analyze its complexity, and develop two algorithms to solve it. Extensive empirical results show the applicability andeffectiveness of the proposed approach."}],"file":[{"relation":"main_file","content_type":"application/pdf","file_id":"3324","access_level":"open_access","file_name":"RIS.pdf","file_size":2229109,"date_created":"2018-06-25T08:07:43Z","creator":"sevilmeh","date_updated":"2018-06-25T08:07:43Z"}],"status":"public"},{"main_file_link":[{"url":"https://doi.org/10.1002/ett.3084 ","open_access":"1"}],"doi":"10.1002/ett.3084","oa":"1","date_updated":"2022-01-06T07:03:28Z","author":[{"first_name":"Holger","id":"126","full_name":"Karl, Holger","last_name":"Karl"},{"last_name":"Dräxler","full_name":"Dräxler, Sevil","id":"31764","first_name":"Sevil"},{"last_name":"Peuster","full_name":"Peuster, Manuel","first_name":"Manuel"},{"last_name":"Galis","full_name":"Galis, Alex","first_name":"Alex"},{"first_name":"Michael","full_name":"Bredel, Michael","last_name":"Bredel"},{"last_name":"Ramos","full_name":"Ramos, Aurora","first_name":"Aurora"},{"first_name":"Josep","full_name":"Martrat, Josep","last_name":"Martrat"},{"last_name":"Siddiqui","full_name":"Siddiqui, Muhammad Shuaib","first_name":"Muhammad Shuaib"},{"last_name":"van Rossem","full_name":"van Rossem, Steven","first_name":"Steven"},{"first_name":"Wouter","full_name":"Tavernier, Wouter","last_name":"Tavernier"},{"last_name":"Xilouris","full_name":"Xilouris, George","first_name":"George"}],"volume":27,"citation":{"short":"H. Karl, S. Dräxler, M. Peuster, A. Galis, M. Bredel, A. Ramos, J. Martrat, M.S. Siddiqui, S. van Rossem, W. Tavernier, G. Xilouris, Transactions on Emerging Telecommunications Technologies 27 (2016) 1206–1215.","mla":"Karl, Holger, et al. “DevOps for Network Function Virtualisation: An Architectural Approach.” <i>Transactions on Emerging Telecommunications Technologies</i>, vol. 27, no. 9, Wiley-Blackwell, 2016, pp. 1206–15, doi:<a href=\"https://doi.org/10.1002/ett.3084\">10.1002/ett.3084</a>.","bibtex":"@article{Karl_Dräxler_Peuster_Galis_Bredel_Ramos_Martrat_Siddiqui_van Rossem_Tavernier_et al._2016, title={DevOps for network function virtualisation: an architectural approach}, volume={27}, DOI={<a href=\"https://doi.org/10.1002/ett.3084\">10.1002/ett.3084</a>}, number={9}, journal={Transactions on Emerging Telecommunications Technologies}, publisher={Wiley-Blackwell}, author={Karl, Holger and Dräxler, Sevil and Peuster, Manuel and Galis, Alex and Bredel, Michael and Ramos, Aurora and Martrat, Josep and Siddiqui, Muhammad Shuaib and van Rossem, Steven and Tavernier, Wouter and et al.}, year={2016}, pages={1206–1215} }","apa":"Karl, H., Dräxler, S., Peuster, M., Galis, A., Bredel, M., Ramos, A., … Xilouris, G. (2016). DevOps for network function virtualisation: an architectural approach. <i>Transactions on Emerging Telecommunications Technologies</i>, <i>27</i>(9), 1206–1215. <a href=\"https://doi.org/10.1002/ett.3084\">https://doi.org/10.1002/ett.3084</a>","chicago":"Karl, Holger, Sevil Dräxler, Manuel Peuster, Alex Galis, Michael Bredel, Aurora Ramos, Josep Martrat, et al. “DevOps for Network Function Virtualisation: An Architectural Approach.” <i>Transactions on Emerging Telecommunications Technologies</i> 27, no. 9 (2016): 1206–15. <a href=\"https://doi.org/10.1002/ett.3084\">https://doi.org/10.1002/ett.3084</a>.","ieee":"H. Karl <i>et al.</i>, “DevOps for network function virtualisation: an architectural approach,” <i>Transactions on Emerging Telecommunications Technologies</i>, vol. 27, no. 9, pp. 1206–1215, 2016.","ama":"Karl H, Dräxler S, Peuster M, et al. DevOps for network function virtualisation: an architectural approach. <i>Transactions on Emerging Telecommunications Technologies</i>. 2016;27(9):1206-1215. doi:<a href=\"https://doi.org/10.1002/ett.3084\">10.1002/ett.3084</a>"},"page":"1206-1215","intvolume":"        27","publication_status":"published","publication_identifier":{"issn":["2161-3915"]},"article_type":"original","_id":"714","user_id":"31764","department":[{"_id":"75"}],"status":"public","type":"journal_article","title":"DevOps for network function virtualisation: an architectural approach","publisher":"Wiley-Blackwell","date_created":"2017-11-22T09:32:54Z","year":"2016","issue":"9","language":[{"iso":"eng"}],"abstract":[{"text":"The Service Programming and Orchestration for Virtualised Software Networks (SONATA) project targets both the flexible programmability of software networks and the optimisation of their deployments by means of integrating Development and Operations in order to accelerate industry adoption of software networks and reduce time-to-market for networked services. SONATA supports network function chaining and orchestration, making service platforms modular and easier to customise to the needs of different service providers, and introduces a specialised Development and Operations model for supporting developers.","lang":"eng"}],"publication":"Transactions on Emerging Telecommunications Technologies"},{"file":[{"relation":"main_file","content_type":"application/pdf","file_size":1471937,"access_level":"open_access","file_id":"3322","file_name":"RIS.pdf","date_updated":"2018-06-25T07:53:54Z","date_created":"2018-06-25T07:53:54Z","creator":"sevilmeh"}],"status":"public","urn":"1665","abstract":[{"text":"Network function virtualization and software-defined networking allow services consisting of virtual network functions to be designed and implemented with great flexibility by facilitating automatic deployments, migrations, and reconfigurations for services and their components. For extended flexibility, we go beyond seeing services as a fixed chain of functions. We present a YANG model for describing the service structure in deployment requests in a flexible way that enables changing the order of functions in case the order of traversing them does not affect the functionality of the service. Upon receiving such requests, the network orchestration system can choose the optimal composition of service components that gives the best results for placement of services in the network. This introduces new complexities to the placement problem by greatly increasing the number of possible ways a service can be composed. In this paper, we describe a heuristic solution that selects a Pareto set of the possible compositions of a service as well as possible combinations of different services, with respect to different resource requirements of the services. Our evaluations show that the selected combinations consist of representative samples of possible structures and requirements and therefore, can result in optimal or close-to-optimal placement results.","lang":"eng"}],"type":"conference","publication":"Proceedings of the 2nd International IEEE Conference on Network Softwarization (NetSoft)","file_date_updated":"2018-06-25T07:53:54Z","ddc":["040"],"user_id":"31764","department":[{"_id":"75"}],"project":[{"name":"SFB 901","_id":"1"},{"_id":"16","name":"SFB 901 - Subprojekt C4"},{"name":"SFB 901 - Project Area C","_id":"4"},{"grant_number":"671517","_id":"25","name":"SONATA NFV: Agile Service Development and Orchestration in 5G Virtualized Networks","call_identifier":"5G PPP Phase 1"}],"_id":"166","citation":{"apa":"Dräxler, S., &#38; Karl, H. (2016). Placement of Services with Flexible Structures Specified by a YANG Data Model. In <i>Proceedings of the 2nd International IEEE Conference on Network Softwarization (NetSoft)</i> (pp. 184--192). <a href=\"https://doi.org/10.1109/NETSOFT.2016.7502412\">https://doi.org/10.1109/NETSOFT.2016.7502412</a>","bibtex":"@inproceedings{Dräxler_Karl_2016, title={Placement of Services with Flexible Structures Specified by a YANG Data Model}, DOI={<a href=\"https://doi.org/10.1109/NETSOFT.2016.7502412\">10.1109/NETSOFT.2016.7502412</a>}, booktitle={Proceedings of the 2nd International IEEE Conference on Network Softwarization (NetSoft)}, author={Dräxler, Sevil and Karl, Holger}, year={2016}, pages={184--192} }","mla":"Dräxler, Sevil, and Holger Karl. “Placement of Services with Flexible Structures Specified by a YANG Data Model.” <i>Proceedings of the 2nd International IEEE Conference on Network Softwarization (NetSoft)</i>, 2016, pp. 184--192, doi:<a href=\"https://doi.org/10.1109/NETSOFT.2016.7502412\">10.1109/NETSOFT.2016.7502412</a>.","short":"S. Dräxler, H. Karl, in: Proceedings of the 2nd International IEEE Conference on Network Softwarization (NetSoft), 2016, pp. 184--192.","ama":"Dräxler S, Karl H. Placement of Services with Flexible Structures Specified by a YANG Data Model. In: <i>Proceedings of the 2nd International IEEE Conference on Network Softwarization (NetSoft)</i>. ; 2016:184--192. doi:<a href=\"https://doi.org/10.1109/NETSOFT.2016.7502412\">10.1109/NETSOFT.2016.7502412</a>","chicago":"Dräxler, Sevil, and Holger Karl. “Placement of Services with Flexible Structures Specified by a YANG Data Model.” In <i>Proceedings of the 2nd International IEEE Conference on Network Softwarization (NetSoft)</i>, 184--192, 2016. <a href=\"https://doi.org/10.1109/NETSOFT.2016.7502412\">https://doi.org/10.1109/NETSOFT.2016.7502412</a>.","ieee":"S. Dräxler and H. Karl, “Placement of Services with Flexible Structures Specified by a YANG Data Model,” in <i>Proceedings of the 2nd International IEEE Conference on Network Softwarization (NetSoft)</i>, 2016, pp. 184--192."},"page":"184--192","year":"2016","has_accepted_license":"1","main_file_link":[{"url":"http://ieeexplore.ieee.org/search/searchresult.jsp?newsearch=true&queryText=10.1109%2FNETSOFT.2016.7502412"}],"doi":"10.1109/NETSOFT.2016.7502412","title":"Placement of Services with Flexible Structures Specified by a YANG Data Model","author":[{"first_name":"Sevil","id":"31764","full_name":"Dräxler, Sevil","last_name":"Dräxler"},{"first_name":"Holger","last_name":"Karl","id":"126","full_name":"Karl, Holger"}],"date_created":"2017-10-17T12:41:24Z","oa":"1","date_updated":"2022-01-06T06:52:53Z"},{"_id":"749","department":[{"_id":"75"}],"user_id":"31764","language":[{"iso":"eng"}],"publication":"CoRR","type":"preprint","status":"public","date_updated":"2022-01-06T07:03:39Z","oa":"1","date_created":"2017-11-27T10:22:25Z","author":[{"last_name":"Dräxler","full_name":"Dräxler, Sevil","id":"31764","first_name":"Sevil"},{"id":"126","full_name":"Karl, Holger","last_name":"Karl","first_name":"Holger"}],"title":"Specification of Complex Structures in Distributed Service Function Chaining Using a YANG Data Model","main_file_link":[{"url":"https://arxiv.org/abs/1503.02442","open_access":"1"}],"year":"2015","citation":{"ieee":"S. Dräxler and H. Karl, “Specification of Complex Structures in Distributed Service Function Chaining Using a YANG Data Model,” <i>CoRR</i>. 2015.","chicago":"Dräxler, Sevil, and Holger Karl. “Specification of Complex Structures in Distributed Service Function Chaining Using a YANG Data Model.” <i>CoRR</i>, 2015.","ama":"Dräxler S, Karl H. Specification of Complex Structures in Distributed Service Function Chaining Using a YANG Data Model. <i>CoRR</i>. 2015.","mla":"Dräxler, Sevil, and Holger Karl. “Specification of Complex Structures in Distributed Service Function Chaining Using a YANG Data Model.” <i>CoRR</i>, 2015.","bibtex":"@article{Dräxler_Karl_2015, title={Specification of Complex Structures in Distributed Service Function Chaining Using a YANG Data Model}, journal={CoRR}, author={Dräxler, Sevil and Karl, Holger}, year={2015} }","short":"S. Dräxler, H. Karl, CoRR (2015).","apa":"Dräxler, S., &#38; Karl, H. (2015). Specification of Complex Structures in Distributed Service Function Chaining Using a YANG Data Model. <i>CoRR</i>."}},{"abstract":[{"lang":"eng","text":"Network appliances perform different functions on network flows and constitute an important part of an operator’s network. Normally, a set of chained network functions process network flows. Following the trend of virtualization of networks, virtualization of the network functions has also become a topic of interest. We define a model for formalizing the chaining of network functions using a context-free language. We process deployment requests and construct virtual network function graphs that can be mapped to the network. We describe the mapping as a Mixed Integer Quadratically Constrained Program (MIQCP) for finding the placement of the network functions and chaining them together considering the limited network resources and requirements of the functions. We have performed a Pareto set analysis to investigate the possible trade-offs between different optimization objectives. "}],"urn":"3601","status":"public","file":[{"content_type":"application/pdf","relation":"main_file","creator":"florida","date_created":"2018-03-20T07:21:01Z","date_updated":"2018-06-25T08:08:44Z","file_id":"1409","file_name":"360-Mehr1410_Specifying_preprint_01.pdf","access_level":"open_access","file_size":422019}],"publication":"Proceedings of the 3rd International Conference on Cloud Networking (CloudNet)","type":"conference","ddc":["040"],"file_date_updated":"2018-06-25T08:08:44Z","_id":"360","project":[{"name":"SFB 901","_id":"1"},{"name":"SFB 901 - Subprojekt A2","_id":"6"},{"_id":"2","name":"SFB 901 - Project Area A"}],"department":[{"_id":"75"}],"user_id":"31764","year":"2014","page":"7-13","citation":{"ama":"Dräxler S, Keller M, Karl H. Specifying and Placing Chains of Virtual Network Functions. In: <i>Proceedings of the 3rd International Conference on Cloud Networking (CloudNet)</i>. ; 2014:7-13. doi:<a href=\"https://doi.org/10.1109/CloudNet.2014.6968961\">10.1109/CloudNet.2014.6968961</a>","ieee":"S. Dräxler, M. Keller, and H. Karl, “Specifying and Placing Chains of Virtual Network Functions,” in <i>Proceedings of the 3rd International Conference on Cloud Networking (CloudNet)</i>, 2014, pp. 7–13.","chicago":"Dräxler, Sevil, Matthias Keller, and Holger Karl. “Specifying and Placing Chains of Virtual Network Functions.” In <i>Proceedings of the 3rd International Conference on Cloud Networking (CloudNet)</i>, 7–13, 2014. <a href=\"https://doi.org/10.1109/CloudNet.2014.6968961\">https://doi.org/10.1109/CloudNet.2014.6968961</a>.","bibtex":"@inproceedings{Dräxler_Keller_Karl_2014, title={Specifying and Placing Chains of Virtual Network Functions}, DOI={<a href=\"https://doi.org/10.1109/CloudNet.2014.6968961\">10.1109/CloudNet.2014.6968961</a>}, booktitle={Proceedings of the 3rd International Conference on Cloud Networking (CloudNet)}, author={Dräxler, Sevil and Keller, Matthias and Karl, Holger}, year={2014}, pages={7–13} }","short":"S. Dräxler, M. Keller, H. Karl, in: Proceedings of the 3rd International Conference on Cloud Networking (CloudNet), 2014, pp. 7–13.","mla":"Dräxler, Sevil, et al. “Specifying and Placing Chains of Virtual Network Functions.” <i>Proceedings of the 3rd International Conference on Cloud Networking (CloudNet)</i>, 2014, pp. 7–13, doi:<a href=\"https://doi.org/10.1109/CloudNet.2014.6968961\">10.1109/CloudNet.2014.6968961</a>.","apa":"Dräxler, S., Keller, M., &#38; Karl, H. (2014). Specifying and Placing Chains of Virtual Network Functions. In <i>Proceedings of the 3rd International Conference on Cloud Networking (CloudNet)</i> (pp. 7–13). <a href=\"https://doi.org/10.1109/CloudNet.2014.6968961\">https://doi.org/10.1109/CloudNet.2014.6968961</a>"},"has_accepted_license":"1","title":"Specifying and Placing Chains of Virtual Network Functions","doi":"10.1109/CloudNet.2014.6968961","oa":"1","date_updated":"2022-01-06T06:59:27Z","date_created":"2017-10-17T12:42:02Z","author":[{"first_name":"Sevil","last_name":"Dräxler","id":"31764","full_name":"Dräxler, Sevil"},{"first_name":"Matthias","full_name":"Keller, Matthias","last_name":"Keller"},{"last_name":"Karl","id":"126","full_name":"Karl, Holger","first_name":"Holger"}]},{"status":"public","type":"bachelorsthesis","user_id":"477","department":[{"_id":"75"}],"project":[{"name":"SFB 901","_id":"1"},{"name":"SFB 901 - Subprojekt A2","_id":"6"},{"name":"SFB 901 - Project Area A","_id":"2"}],"_id":"461","citation":{"ieee":"S. Dräxler, <i>Adaptive Placement of Programmable Virtual Network Function Chains</i>. Universität Paderborn, 2014.","chicago":"Dräxler, Sevil. <i>Adaptive Placement of Programmable Virtual Network Function Chains</i>. Universität Paderborn, 2014.","ama":"Dräxler S. <i>Adaptive Placement of Programmable Virtual Network Function Chains</i>. Universität Paderborn; 2014.","mla":"Dräxler, Sevil. <i>Adaptive Placement of Programmable Virtual Network Function Chains</i>. Universität Paderborn, 2014.","bibtex":"@book{Dräxler_2014, title={Adaptive Placement of Programmable Virtual Network Function Chains}, publisher={Universität Paderborn}, author={Dräxler, Sevil}, year={2014} }","short":"S. Dräxler, Adaptive Placement of Programmable Virtual Network Function Chains, Universität Paderborn, 2014.","apa":"Dräxler, S. (2014). <i>Adaptive Placement of Programmable Virtual Network Function Chains</i>. Universität Paderborn."},"year":"2014","title":"Adaptive Placement of Programmable Virtual Network Function Chains","author":[{"last_name":"Dräxler","id":"31764","full_name":"Dräxler, Sevil","first_name":"Sevil"}],"date_created":"2017-10-17T12:42:21Z","publisher":"Universität Paderborn","date_updated":"2022-01-06T07:01:14Z"}]