Using multiple per egress burstifiers for enhanced TCP performance in OBS networks

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dc.citation.epage117en_US
dc.citation.issueNumber2en_US
dc.citation.spage105en_US
dc.citation.volumeNumber17en_US
dc.contributor.authorGurel, G.en_US
dc.contributor.authorKarasan, E.en_US
dc.date.accessioned2016-02-08T10:04:49Z
dc.date.available2016-02-08T10:04:49Z
dc.date.issued2009en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.description.abstractBurst assembly mechanism is one of the fundamental factors that determine the performance of an optical burst switching (OBS) network. In this paper, we investigate the influence of the number of burstifiers on TCP performance for an OBS network. The goodput of TCP flows between an ingress node and an egress node traveling through an optical network is studied as the number of assembly buffers per destination varies. First, the burst-length independent losses resulting from the contention in the core OBS network using a non-void-filling burst scheduling algorithm, e.g., Horizon, are studied. Then, burst-length dependent losses arising as a result of void-filling scheduling algorithms, e.g., LAUC-VF, are studied for two different TCP flow models: FTP-type long-lived flows and variable size short-lived flows. Simulation results show that for both types of scheduling algorithms, both types of TCP flow models, and different TCP versions (Reno, Newreno and Sack), TCP goodput increases as the number of burst assemblers per egress node is increased for an OBS network employing timer-based assembly algorithm. The improvement from one burstifier to moderate number of burst assemblers is significant (15-50% depending on the burst loss probability, per-hop processing delay, and the TCP version), but the goodput difference between moderate number of buffers and per-flow aggregation is relatively small, implying that an OBS edge switch should use moderate number of assembly buffers per destination for enhanced TCP performance without substantially increasing the hardware complexity. © 2008 Springer Science+Business Media, LLC.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T10:04:49Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2009en
dc.identifier.doi10.1007/s11107-008-0146-xen_US
dc.identifier.eissn1572-8188
dc.identifier.issn1387-974X
dc.identifier.urihttp://hdl.handle.net/11693/22795
dc.language.isoEnglishen_US
dc.publisherSpringer New York LLCen_US
dc.relation.isversionofhttp://doi.org/10.1007/s11107-008-0146-xen_US
dc.source.titlePhotonic Network Communicationsen_US
dc.subjectOptical burst switchingen_US
dc.subjectTransport control protocolen_US
dc.subjectBurstificationen_US
dc.titleUsing multiple per egress burstifiers for enhanced TCP performance in OBS networksen_US
dc.typeArticleen_US

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