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Browsing by Subject "sieć IP"

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  • thumbnail.journal.alt
    Item type:Thesis, Access status: Restricted ,
    Analiza wybranych metod gwarantowania jakości obsługi ruchu w sieciach IP
    (Data obrony: 2020-01-21) Lechowicz, Joanna
    Wydział Informatyki, Elektroniki i Telekomunikacji
  • thumbnail.journal.alt
    Item type:Doctoral Dissertation, Access status: Open Access ,
    Wpływ kształtowania ruchu na opóźnienia w sieci IP w architekturze Usług Zróżnicowanych dla reguł przesyłania pakietów EF PHB
    (Data obrony: 2010) Gozdecki, Janusz
    Wydział Elektrotechniki, Automatyki, Informatyki i Elektroniki
    The dissertation is the analysis of the benefits of traffic shaping using leaky bucket algorithm at the maximum delay in a network, which packets can suffer during transmission over an Differentiated Services (DiffServ) IP network. In the central part of the desideration, the author proposes to use hop-by-hop aggregate-based shaping to decrease delay bounds for network services based on EF PHB. Author's findings are important to understand how aggregate-based shaping can influence performance of DiffServ networks. In the dissertation delay bounds within the boundaries of a DiffServ network with hop-by-hop EF PHB aggregate leaky bucket shaping are considered. First a model of network architecture is derived. Based on this model author formulates a theorem which describes the end-to-end delay bound for EF PHB based services in a DiffServ network where hop-by-hop EF PHB aggregate leaky bucket shaping is applied. Author proves that the application of aggregate-based shaping in a general network architecture with FIFO Guaranteed Rate aggregate scheduling decreases the deterministic end-to-end delay bound for EF PHB based services in DiffServ networks. The statement is true when a service rate of EF PHB aggregate is lower than throughput of a link. Applying a leaky bucket shaping for flows aggregates in each node of the DiffServ domain avoids excessive jitter accumulation in the network.