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Measurement of Backbone Routing Parameters
Celárek, Ondřej ; Kořenek, Jan (referee) ; Matoušek, Jiří (advisor)
This thesis deals with issue of routing between Autonomous Systems. For routing between autonomous systems is used Border Gateway Protocol (BGP). The routers in Autonomous Systems modify their routing tables based on BGP messages. Routing tables are used for forwarding information on Internet. Issue of this thesis is analysis of change routing tables for eventually optimizing of routing architecture. First part of thesis is focused on theory of routers, routing ang BGP. Second part of this thesis focuses on implementation and execution experiments with routing tables. In this part are also described reached results.
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Simulators for Wireless Sensor Networks
Capalini, Richard ; Nagy, Jan (referee) ; Zbořil, František (advisor)
Wireless sensor networks (WSN) were designed for purpose of monitoring physical phenomenons and controlling processes by sensors placed in nodes. There are three basic principles: detection of event (phenomenon), data capture and data processing in node. Afterwards data are transmitted to interested node. WSN typically consists of huge number of thousands nodes and one base station. Nodes cooperatively disseminate data towards a base station, which saved them to memory and provide access to users for example over Internet. This work report a comprehensive view of wireless sensor networks and routing tasks in sensor field. Practical part of work is aimed at simulation of choosen routing protocols placed in suitable models.
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Modelling Cisco Router in Simulation Tool OMNeT++
Sivák, Vladimír ; Ryšavý, Ondřej (referee) ; Matoušek, Petr (advisor)
This bachelor's thesis describes simulation of computer networks using open source simulator OMNeT++ including the INET Framework extension. According to real behaviour of Cisco routers, we implemented a new modul for the INET Framework extension. Casy study compares behaviour of real network with simulation of the same network in OMNeT++ using the implemented modul.
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OSPFv3 dynamic routing protocol for MANET networks in OPNET Modeler simulation environment
Henzely, Július ; Skořepa, Michal (referee) ; Růčka, Lukáš (advisor)
This bachelor's thesis includes theoretical knowledge about fundamental informations related to functionality of mobile networks, with focus on MANET routing protocols. The project contains an overview of routing protocols, especially OSPFv3 routing protocol. In the practical section of project, there is a brief description of OPNET Modeler simulation environment and the process of establishing the network with configured routing protocol in it. The project also describes a procedure for extending of the Hello packet structure by a field containing node traffic speed in OPNET Modeler.
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Router principles illustrating software for teaching support
Sobek, Jiří ; Vymazal, Michal (referee) ; Vychodil, Petr (advisor)
This bachelor thesis is mainly focused on the network functionality and its key component, the router. The main points of this work are an explanation of the network principles and router functions which are extended with information about routing protocols and its mutual separation. The practical part considers a realization of applets which should serve as a school software. In detail they explain the way of routing protocols work and its inner structure. Simultaneously consider the principles of two significant routing protocols such as Open Shortest Path First (OSPF) and Routing Information Protocol (RIP). All of the applets are finally loaded on the web page which helps to their visitors understand the complexity of routing and other infomation.
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Principals, switching functions and routing techniques in computer networks
Dvořák, Pavel ; Pelka, Tomáš (referee) ; Polívka, Michal (advisor)
This bachelor thesis consider main principles and function of active network components. Mainly is intent to component working on the third level of referential model ISO/OSI, router. There are described its main parts and more closely charactered routing protocols. Then is verified the ability of dynamic routing to react to failure in the network and there is measured the reaction time of crossing to secondary route when using different routing protocols. Another part of the thesis is focused on the questions of Quality of Service (QoS) and its support in computer networks. There are explored various ways of the QoS configuration on the routers and the proper of them is chosen and applied to the test network.
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Usage of NS2 simulator in multicast networks
Hošek, Petr ; Mlýnek, Petr (referee) ; Koutný, Martin (advisor)
The thesis is focused on routing in data network, especially on network method of multicast. The first section closely deals with particular multicast protocols and next with models of multicast, mainly Any Source Multicast and Source Specific Multicast. The main point of this work is implementation of multicast using Network Simulator. On the practical level, two laboratory exercises are included. In this part, readers have the possibility to make sure of reached knowledge of multicast and its implementation in NS2.
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Analysis and prediction of data traffic in mobile ad hoc network
Konečný, Daniel ; Koutný, Martin (referee) ; Hošek, Jiří (advisor)
The diploma thesis „Analysis and prediction of data traffic in mobile Ad Hoc network“ focuses on the radio propagation models of services in MANET (Mobile Ad-hoc) networks. It describes MANET networks and covers the theoretical analysis of routing protocols, radio wave propagation and propagation models of simulation enviroment NS-3 (Network Simulator 3). Furthermore, there is processed the creation process of model MANET networks with the routing protocol AODV (Ad Hoc On Demand Distance Vector) in the simulation environment NS-3. For analysis purposes there were implemented new functions to capture value of SNR (Signal to Noise Ratio) and throughtput. For this reason a physical layer of one of NS-3 model was modified. As an result there is a simulation build that compared several number of propagaion models.
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Redundancy in data networks
Šoun, Jan ; Pavlíček, Luboš (advisor) ; Beneš, Jiří (referee)
This thesis focuses on redundancy in data networks and on technologies which are used to achieve high availability in network infrastructure. This thesis is based on industry standards published by well-known standardization authorities. One proprietary technology which can effectively replace these standards and simplify the whole network is also presented in more detail. The theoretical part individually describes all such technologies and standards. The practical part deals with an appropriate combination of these technologies and their application in a specific product environment. This work is meant to describe the whole concept of high availability in network infrastructure and should be instrumental in understanding how these technologies are deployed in practice.
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