{"date_updated":"2022-01-06T06:54:32Z","has_accepted_license":"1","citation":{"apa":"Schneider, S. B., Jürgens, M., &#38; Karl, H. (2021). Divide and Conquer: Hierarchical Network and Service Coordination. In <i>IFIP/IEEE International Symposium on Integrated Network Management (IM)</i>. Bordeaux, France: IFIP/IEEE.","mla":"Schneider, Stefan Balthasar, et al. “Divide and Conquer: Hierarchical Network and Service Coordination.” <i>IFIP/IEEE International Symposium on Integrated Network Management (IM)</i>, IFIP/IEEE, 2021.","short":"S.B. Schneider, M. Jürgens, H. Karl, in: IFIP/IEEE International Symposium on Integrated Network Management (IM), IFIP/IEEE, 2021.","ama":"Schneider SB, Jürgens M, Karl H. Divide and Conquer: Hierarchical Network and Service Coordination. In: <i>IFIP/IEEE International Symposium on Integrated Network Management (IM)</i>. IFIP/IEEE; 2021.","ieee":"S. B. Schneider, M. Jürgens, and H. Karl, “Divide and Conquer: Hierarchical Network and Service Coordination,” in <i>IFIP/IEEE International Symposium on Integrated Network Management (IM)</i>, Bordeaux, France, 2021.","bibtex":"@inproceedings{Schneider_Jürgens_Karl_2021, title={Divide and Conquer: Hierarchical Network and Service Coordination}, booktitle={IFIP/IEEE International Symposium on Integrated Network Management (IM)}, publisher={IFIP/IEEE}, author={Schneider, Stefan Balthasar and Jürgens, Mirko and Karl, Holger}, year={2021} }","chicago":"Schneider, Stefan Balthasar, Mirko Jürgens, and Holger Karl. “Divide and Conquer: Hierarchical Network and Service Coordination.” In <i>IFIP/IEEE International Symposium on Integrated Network Management (IM)</i>. IFIP/IEEE, 2021."},"quality_controlled":"1","date_created":"2020-12-11T08:39:47Z","abstract":[{"text":"In practical, large-scale networks, services are requested\r\nby users across the globe, e.g., for video streaming.\r\nServices consist of multiple interconnected components such as\r\nmicroservices in a service mesh. Coordinating these services\r\nrequires scaling them according to continuously changing user\r\ndemand, deploying instances at the edge close to their users,\r\nand routing traffic efficiently between users and connected instances.\r\nNetwork and service coordination is commonly addressed\r\nthrough centralized approaches, where a single coordinator\r\nknows everything and coordinates the entire network globally.\r\nWhile such centralized approaches can reach global optima, they\r\ndo not scale to large, realistic networks. In contrast, distributed\r\napproaches scale well, but sacrifice solution quality due to their\r\nlimited scope of knowledge and coordination decisions.\r\n\r\nTo this end, we propose a hierarchical coordination approach\r\nthat combines the good solution quality of centralized approaches\r\nwith the scalability of distributed approaches. In doing so, we divide\r\nthe network into multiple hierarchical domains and optimize\r\ncoordination in a top-down manner. We compare our hierarchical\r\nwith a centralized approach in an extensive evaluation on a real-world\r\nnetwork topology. Our results indicate that hierarchical\r\ncoordination can find close-to-optimal solutions in a fraction of\r\nthe runtime of centralized approaches.","lang":"eng"}],"user_id":"35343","ddc":["006"],"author":[{"orcid":"0000-0001-8210-4011","last_name":"Schneider","full_name":"Schneider, Stefan Balthasar","first_name":"Stefan Balthasar","id":"35343"},{"first_name":"Mirko","full_name":"Jürgens, Mirko","last_name":"Jürgens"},{"full_name":"Karl, Holger","last_name":"Karl","first_name":"Holger","id":"126"}],"keyword":["network management","service management","coordination","hierarchical","scalability","nfv"],"title":"Divide and Conquer: Hierarchical Network and Service Coordination","publication":"IFIP/IEEE International Symposium on Integrated Network Management (IM)","language":[{"iso":"eng"}],"_id":"20693","project":[{"name":"SFB 901","_id":"1"},{"name":"SFB 901 - Project Area C","_id":"4"},{"_id":"16","name":"SFB 901 - Subproject C4"}],"status":"public","type":"conference","file_date_updated":"2020-12-11T08:37:37Z","oa":"1","department":[{"_id":"75"}],"year":"2021","file":[{"file_name":"preprint_with_header.pdf","date_updated":"2020-12-11T08:37:37Z","creator":"stschn","access_level":"open_access","file_size":7979772,"content_type":"application/pdf","file_id":"20694","date_created":"2020-12-11T08:37:37Z","title":"Divide and Conquer: Hierarchical Network and Service Coordination","relation":"main_file"}],"conference":{"name":"IFIP/IEEE International Symposium on Integrated Network Management (IM)","location":"Bordeaux, France"},"publisher":"IFIP/IEEE"}