Performance assessment of one-way resource reservation protocols in IP over optical burst switched networks /
Abstract: In this thesis,the performance assessment of one-way resource reservation protocols in IP over optical burst switched (OBS) networks is studied. The study is focused on the most important one-way resource reservation protocols (Just-in-Time JIT,JumpStart,JIT+,Just-Enough-Time(JET),and Hori...
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| Endereço do item: | https://app.bczm.ufrn.br/home/#/item/272684 |
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| Resumo: | Abstract: In this thesis,the performance assessment of one-way resource reservation protocols in IP over optical burst switched (OBS) networks is studied. The study is focused on the most important one-way resource reservation protocols (Just-in-Time JIT,JumpStart,JIT+,Just-Enough-Time(JET),and Horizon),and OBS networks with mesh and ring topologies were analyzed.The mesh topologies considered are the following:chordal rings (with nodal degree three,four,five,and six),mesh-torus (with 16 and 25 nodes),NSFNET (with 14 and 16 nodes),ARPANET,the european optical network,and a topology proposed for the Portuguese Fundacão para a Computacão Cientifica Nacional (FCCN-NET).
This study takes into account various parameters that influence the performance of OBS networks that are the following: offset length,edge to core node delay,propagation delay between core nodes,number of data channels per link, setup message processing time,optical cross-connect (OXC) configuration time, network size and topology. The work was carried out according to several approaches which consisted of the analysis of the influence of the number of data channels per link,the burst generation ratio (λ/μ),the number of nodes,the nodal degree gain, the setup message processing time,the OXC configuration time,the chord length gain, and the chord length (these latter two may only be applied to chordal ring topologies). This study was carried out by simulation. Due to the inexistence of suitable simulators, at the beginning of this study, an object-oriented model for simulation of IP over OBS networks,called OBSim was proposed,and further implemented and validated.
A new one-way resource reservation protocol, called Enhanced Just-in-Time (E-JIT), was proposed. E-JIT maintains the JIT simplicity in terms of implementation and it reduces the period of time in which the data channel remains in reserved status and optimizes data channel utilization. In this study, E-JIT is shown to perform better than JIT.#$&Resumo: |
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