{"created":"2020-09-01T14:32:51.936879+00:00","id":4348,"links":{},"metadata":{"_buckets":{"deposit":"294f042e-dbec-4149-9846-87154ffc9ed0"},"_deposit":{"id":"4348","owners":[],"pid":{"revision_id":0,"type":"recid","value":"4348"},"status":"published"},"_oai":{"id":"oai:meral.edu.mm:recid/4348","sets":["1582963302567:1597824322519"]},"communities":["ucsy"],"item_1583103067471":{"attribute_name":"Title","attribute_value_mlt":[{"subitem_1551255647225":"Delay-Aware Elephant Flow Rerouting in Software-Defined Networking (SDN)","subitem_1551255648112":"en_US"}]},"item_1583103085720":{"attribute_name":"Description","attribute_value_mlt":[{"interim":"Conventional tree topology networks and single shortest path routing willcreate congestion along overloaded links. Therefore, load-balanced path selection isnecessary to reduce congestion and enhance the performance of the application. Inorder to solve network congestion problem and to balance the network load, EqualCost Multipath (ECMP) algorithm is used to handle traffic flows. However, ECMPalgorithm lacks the ability to schedule the traffic flow dynamically. Moreover, ECMPdoes not consider any current network and traffic conditions.Software-Defined Networking (SDN) is an advanced network infrastructureoffering cost-effectiveness and high interoperability for end-user control and networkprogrammability in networks. The primary difference between a conventionalnetworking and SDN networking is decoupling data plane and control plane in SDNbased networks. In SDN infrastructure, the whole network is centrally managed by adedicated controller, which interacts with network switches using OpenFlow protocol.The network congestion detection and dynamic scheduling mechanisms can beimplemented by using OpenFlow protocol in SDN infrastructure.Traffic Engineering (TE) in SDN is a critical application that is attractedtremendous amount of research to find optimized routing decision based on analysisof network and traffic conditions. Following traffic engineering in SDN, most ofliterature reviews differentiate the traffic flows in networks: small-volume (shortlived) flow which is referred to as mice flows and large-volume (long-lived) flowwhich is referred to as elephant flow. Among these two types of flows, elephant flowscan affect the network performance due to consuming large amount of resources.Therefore, differentiation types of flows and scheduling elephant flows are importantissues in TE.A large number of elephant flow scheduling approaches in traffic engineeringhave been proposed. At first, various examples of existing traffic measuring andrerouting methods are analyzed, and then their advantages and disadvantages arecompared, based on a number of significant criteria such as the improvement ofnetwork throughput, the reduction of network delay and packet loss. Recent researchon traffic engineering has focused on collecting flow statistics, byte counts andbandwidth utilization; however, a majority of the solutions does not address delayrelated issues.iiiThis dissertation presents a study towards an elephant flow schedulingapproach for various types of traffic such as TCP, UDP, HTTP and FTP. To this end,a new traffic management method is proposed, that is, Delay-Aware Elephant FlowRerouting (DAEFR), aiming to minimize the static ECMP's flow collision problemand network congestion, thereby optimizing network throughput and, reducing flowcompletion time and packet loss. Since the proposed method is flow-based reroutingmethod, the risk of packet reordering can also be reduced without additional networkoverhead. The proposed design for dynamic multipath-based traffic managementapproach in the SDN comprises five main tasks: detecting elephant flow, computingshortest paths, estimating end-to-end delay and bandwidth utilization, calculating leastcost path, and rerouting traffic flow from the ongoing path to the uncongested path."}]},"item_1583103108160":{"attribute_name":"Keywords","attribute_value":[]},"item_1583103120197":{"attribute_name":"Files","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2019-10-07"}],"displaytype":"preview","filename":"Hnin_Thiri_Zaw.pdf","filesize":[{"value":"8695 Kb"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"url":"https://meral.edu.mm/record/4348/files/Hnin_Thiri_Zaw.pdf"},"version_id":"081c81e7-d3ee-4167-a252-d7e46d275b8d"}]},"item_1583103131163":{"attribute_name":"Journal articles","attribute_value_mlt":[{"subitem_issue":"","subitem_journal_title":"","subitem_pages":"","subitem_volume":""}]},"item_1583103147082":{"attribute_name":"Conference papers","attribute_value_mlt":[{"subitem_acronym":"","subitem_c_date":"","subitem_conference_title":"","subitem_part":"","subitem_place":"","subitem_session":"","subitem_website":""}]},"item_1583103211336":{"attribute_name":"Books/reports/chapters","attribute_value_mlt":[{"subitem_book_title":"","subitem_isbn":"","subitem_pages":"","subitem_place":"","subitem_publisher":""}]},"item_1583103233624":{"attribute_name":"Thesis/dissertations","attribute_value_mlt":[{"subitem_awarding_university":"University of Computer Studies, Yangon","subitem_supervisor(s)":[{"subitem_supervisor":""}]}]},"item_1583105942107":{"attribute_name":"Authors","attribute_value_mlt":[{"subitem_authors":[{"subitem_authors_fullname":"Zaw, Hnin Thiri"}]}]},"item_1583108359239":{"attribute_name":"Upload type","attribute_value_mlt":[{"interim":"Publication"}]},"item_1583108428133":{"attribute_name":"Publication type","attribute_value_mlt":[{"interim":"Thesis"}]},"item_1583159729339":{"attribute_name":"Publication date","attribute_value":"2019-09"},"item_1583159847033":{"attribute_name":"Identifier","attribute_value":"http://onlineresource.ucsy.edu.mm/handle/123456789/2284"},"item_title":"Delay-Aware Elephant Flow Rerouting in Software-Defined Networking (SDN)","item_type_id":"21","owner":"1","path":["1597824322519"],"publish_date":"2019-10-07","publish_status":"0","recid":"4348","relation_version_is_last":true,"title":["Delay-Aware Elephant Flow Rerouting in Software-Defined Networking (SDN)"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2021-12-13T01:45:55.831741+00:00"}