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Advanced Segmentation of a Simulated Network
Slávik, Mark ; Komosný, Dan (referee) ; Benedikt, Jan (advisor)
The diploma thesis deals with the simulation of available routing protocols in the NS3 simulator and in the Quagga module. The functions of simulated routing protocols are described in the theoretical part. In the practical part, the functionality of the NS3 simulator and the RIP, OLSR and OSPF, BGP routing protocols from the Quagga module are introduced using a simple topology. Finally, the network is extended and several subnets are added. Using available analysis tools, the network is subsequently analyzed and evaluated with different scenarios.
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Experimental MANET network in NS-3 simulator
Vadkerti, Gabriel ; Langhammer, Lukáš (referee) ; Bartl, Milan (advisor)
This thesis deals with the problem of MANET networks. It presents routing protocols, their types, advantages and disadvantages. The protocols, such as AODV and OSPF, are analyzed in detail. The next section describes the NS-3 simulator and the meaning of its key codes. There are named and explained the most common mobility models and their correct writing into the source code. A MANET network simulation is created and a program for indicating the routes of packets through the network is introduced. The next describes traffic models for data networks. A simple traffic model for NS-3 and a program for graphic representation of this traffic were created. The DCE module for NS-3 is introduced in the last section and a demonstrational program of using Linux stack is created.
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MRI Acquisition and Preprocessing of Image Sequences for Clinical Perfusion Imaging
Krchňavý, Jan ; Bartoš, Michal (referee) ; Jiřík, Radovan (advisor)
This thesis describes the theory for static and dynamic magnetic-resonance imaging using contrast agents affecting T1 relaxation time. The available acquisition methods in the specified facility of Masaryk Oncological Institute in Brno are described. The sequences for subsequent experimental measurements are selected. The used phantoms are described. Acquisition protocol for measuring is described briefly and the evaluation method for the measured data is suggested. The best acquisition sequence and a method of measurements is chosen influenced by estimation of relaxation time T1, sensitivity and signal to noise ratio. Perfusion analysis is executed and perfusion parameters are calculated. The work was supported by the European Regional Development Fund and the State Budget of the Czech Republic (RECAMO, CZ.1.05/2.1.00/03.0101).
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Data network simulation using direct code execution
Trávníček, Michal ; Bartl, Milan (referee) ; Krkoš, Radko (advisor)
Purpose of this master thesis was to explain simulation of real network, point to the imperfection during these simulations and try to find out technologies and solutions that could improve credibility of simulation. For this purpose, network simulator ns-3 has been chosen which supports direct code execution together with Quagga software suite. Master thesis describes internet protocol IPv4, UDP protocol, basics of routing and detailed explanation of OSPF routing protocol. Focus in this thesis is also on general description of simulation, its kinds and detail explanation of discrete simulation that is used by ns-3 simulator. Next chapter explains theory of ns-3 simulator, its development, conceptual overview and objects. Direct code execution and Quagga that both help improve credibility of simulation, are described in last chapter of theoretical part of thesis. In practical part of thesis is explained how to install and configure all three implemantaions of ns-3 simulator on Ubuntu, linux distribution. On the basis of obtained knowledge, the simulation model has been designed, also there has been given detailed explanation of how to create new model of simulation and how to analyze its results for all implementation.
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Laboratory exercises explaining network technologies and protocols
Coufal, Tomáš ; Dvořák, Jan (referee) ; Langhammer, Lukáš (advisor)
Diploma thesis deals with creation of laboratory exercises in ns-3 environment. Each one of three exercises consists of theoretical introduction and instructions to carry out the simulation. The first exercise´s topic is routing protocol BGP. The second exercise is focused on transport protocols TCP, UDP, SCTP. In the last exercise, the basic network devices and topologies are simulated. The ARP and RIPv2 protocols are simulated as well.
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Creation of new laboratory exercises explaining the principles of communication protocols
Babjarčiková, Lenka ; Jeřábek, Jan (referee) ; Langhammer, Lukáš (advisor)
The aim of this master thesis is to create two laboratory exercises in ns-3 network simulator for chosen communication protocols. The chosen protocols are BGP and ICMPv6. The first part of this thesis contains teoretical knowledge used in order to design laboratory exercise. It contains descriptions of funcionality of both protocols and messages they use. This chapter also includes brief description of three options which were considered for implementation of BGP protocol into ns-3 enviroment. The second chapter consists of actual laboratory exercises which were created as a purpose of this thesis. Exercise for BGP protocol deals with creating neighborhoods between routers at autonomous system level, analyzing the way routers communicate within their neighborhoods and how protocol reacts when the connection between two neighbor routers fails. Exercise created for ICMPv6 protocol is focused on its messages and their usage within multiple protocol funcionalities, such as address configuration, link address resolution and error detection.
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Creation of new laboratory exercises explaining the principles of communication protocols
Babjarčiková, Lenka ; Jeřábek, Jan (referee) ; Langhammer, Lukáš (advisor)
The aim of this master thesis is to create two laboratory exercises in ns-3 network simulator for chosen communication protocols. The chosen protocols are BGP and ICMPv6. The first part of this thesis contains teoretical knowledge used in order to design laboratory exercise. It contains descriptions of funcionality of both protocols and messages they use. This chapter also includes brief description of three options which were considered for implementation of BGP protocol into ns-3 enviroment. The second chapter consists of actual laboratory exercises which were created as a purpose of this thesis. Exercise for BGP protocol deals with creating neighborhoods between routers at autonomous system level, analyzing the way routers communicate within their neighborhoods and how protocol reacts when the connection between two neighbor routers fails. Exercise created for ICMPv6 protocol is focused on its messages and their usage within multiple protocol funcionalities, such as address configuration, link address resolution and error detection.
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Laboratory exercises explaining network technologies and protocols
Coufal, Tomáš ; Dvořák, Jan (referee) ; Langhammer, Lukáš (advisor)
Diploma thesis deals with creation of laboratory exercises in ns-3 environment. Each one of three exercises consists of theoretical introduction and instructions to carry out the simulation. The first exercise´s topic is routing protocol BGP. The second exercise is focused on transport protocols TCP, UDP, SCTP. In the last exercise, the basic network devices and topologies are simulated. The ARP and RIPv2 protocols are simulated as well.
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Experimental MANET network in NS-3 simulator
Vadkerti, Gabriel ; Langhammer, Lukáš (referee) ; Bartl, Milan (advisor)
This thesis deals with the problem of MANET networks. It presents routing protocols, their types, advantages and disadvantages. The protocols, such as AODV and OSPF, are analyzed in detail. The next section describes the NS-3 simulator and the meaning of its key codes. There are named and explained the most common mobility models and their correct writing into the source code. A MANET network simulation is created and a program for indicating the routes of packets through the network is introduced. The next describes traffic models for data networks. A simple traffic model for NS-3 and a program for graphic representation of this traffic were created. The DCE module for NS-3 is introduced in the last section and a demonstrational program of using Linux stack is created.
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Data network simulation using direct code execution
Trávníček, Michal ; Bartl, Milan (referee) ; Krkoš, Radko (advisor)
Purpose of this master thesis was to explain simulation of real network, point to the imperfection during these simulations and try to find out technologies and solutions that could improve credibility of simulation. For this purpose, network simulator ns-3 has been chosen which supports direct code execution together with Quagga software suite. Master thesis describes internet protocol IPv4, UDP protocol, basics of routing and detailed explanation of OSPF routing protocol. Focus in this thesis is also on general description of simulation, its kinds and detail explanation of discrete simulation that is used by ns-3 simulator. Next chapter explains theory of ns-3 simulator, its development, conceptual overview and objects. Direct code execution and Quagga that both help improve credibility of simulation, are described in last chapter of theoretical part of thesis. In practical part of thesis is explained how to install and configure all three implemantaions of ns-3 simulator on Ubuntu, linux distribution. On the basis of obtained knowledge, the simulation model has been designed, also there has been given detailed explanation of how to create new model of simulation and how to analyze its results for all implementation.
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