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Methods for measuring transmission parameters of data networks
Modrák, Zdeněk ; Škorpil, Vladislav (referee) ; Zeman, Václav (advisor)
Study and benchmarking methodology description of methods for measuring transmission parameters of data networks were the objectives of bachelor’s thesis. My sources were the RFC standards. Those are the basic recommendations of internet networks. I tested web applications for measuring transmission parameters. The test was based on the study of RFC 2544 and also I tested utility for the Linux operating system. I designed a web application for measuring basic parameters of data networks. Basic parameters are transmission stream from the server to the user, the transmission stream from the user to the server, delay and stability. Design of the application was based on experiences from testing web applications and utility. The application is using PHP server’s language along with MySQL database and JavaScript client’s language. The application also works on smart phones and tablets. The measured data should be presented by graphs.
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Measurement of data network quality parameters
Ripper, David ; Kováč, Dominik (referee) ; Zeman, Václav (advisor)
The aim of this thesis was studying and describing known methods for testing transmission parameters in data networks based on protocol stack TCP/IP. Firstly were individual transmission parameters specified and determined their impact on service quality. Another aim was to carry out a comparison of the different methodologies of measurement of transmission parameters, performed their qualifications on the basis of these findings and methodology for measuring service quality from the user's perspective was proposed. It was a web application where users measured basic transmission parameters, then the users judged videos according to the evaluation scale MOS (Mean Opinion Score) and with the help of these data was analysis, classification connection and impact of connection on MOS evaluation.
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Performance Testing of Active Network Devices
Vrtílek, Michal ; Čejka, Rudolf (referee) ; Matoušek, Petr (advisor)
At the present time voice and TV services deploy over IP networks. These services put high requirements on network devices. To find out if an device covers these requirement we need to pass efficiency tests on the device. Hardware and software tools can be used for testing. Tests should match requirements based by RFC 2544. Nowadays there isn't any free available application that should do all tests according to the standard. This work deals with proposal and implementation testing application for active network devices according to standard RFC 2544.
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Design of CISCO network analysis by VePAL TX300 Analyzer
Ťápal, Tomáš ; Vychodil, Petr (referee) ; Škorpil, Vladislav (advisor)
This bachelor´s work consists of describing the network Cisco, possibilities of network analysis with analyzer VePAL TX300 and Sunset MTT, creation of manual for the analyzer VePAL TX300 and draft three laboratory exercises. The first exercise analyzes transmission parameters of the network Cisco. The second exercise compares parameters of two different types of routers. The third exercise analysis VoIP and IPTV services, especially qualitative parameters.
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The audit methology of optical networks
Štěpán, Petr ; Münster, Petr (referee) ; Reichert, Pavel (advisor)
This work deals with summary of optical system audit in the terms of all layer of the reference model ISO/OSI. Introduction of the work focuses on exploring issues of management networks control, the description of ISO/OSI model and explanation of the terms QoS and SLAs. The description of the optical fiber transmission follows after that. The characteristics of the waveguide and optical communication system components with regard to its reliable operation and management are analyzed. Some major types of optical networks are described. Following section contains a description of methods used in the audit, further the methods for measuring physical, connection and network layer of the reference model are discussed more thoroughly. The work also contains a partial analysis of the audit of the physical layer of the selected section of the Brno academic network optical line. Of all these methods for networks control the final audit report for the optical network with selected limits is compiled as a conclusion of the work.
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Simulation and measurement of triple play services in FTTx networks
Horváth, Tomáš ; Münster, Petr (referee) ; Šifta, Radim (advisor)
The aim of this thesis was to ascertain with the measurement methods of passive optical networks and the creation of a simulation model that corresponds to the measured network and comparison of results. The first chapter deals with Triple Play services, which are focused on different services (transmission of television signals, voice and data transmission). Each service consists of a subchapter and presents a detailed description of the parameters associated with the transmission. The second chapter of the theoretical part consists of an analysis of passive optical networks according to termination method of FTTx optical fiber. Partial part of this chapter consists of description of standard passive optical networks APON, BPON, GPON and EPON. The EPON standard is explained in detail. The theoretical part of the thesis is concluded with a description of active elements that will form the laboratory measured network. Testing of designed passive optical network is performed in the practical part of the thesis. The measurement is divided into two chapters. The first chapter consist of measuring of the „inanimate network“, as there are missing active elements in the nominated net. Network measurements were done by a direct measuring method and reflectometric method. The second chapter of the practical part consists of measuring the parameters of quality of service (QoS). This chapter is divided into subchapters, such as: the measurement using RFC 2544 standard, the measurement using ITU-T standard Y.156 (EtherSam) and bit error rate testing (BERT). The practical part ends with a designed simulation network model, which was proposed in OptSim 5.2. The aim of the simulation model was to maximally resemble a real network, due to result comparison.
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Perfecting the analysis of 10Gbit/s computer network
Ťápal, Tomáš ; Polívka, Michal (referee) ; Škorpil, Vladislav (advisor)
The master’s thesis consists of several parts. Describes the technology 10 Gbps Ethernet. Analyzer Ixia and Endace presents, especially their use for traffic analysis and stress testing the network devices. It deals with documents RFC concerning the routers and switch testing. Thesis includes the reports of tests switches and router performed by RFC 2544 and RFC 2889 documents. Part of the thesis is dedicated to COMBO FPGA cards. Documentations to the analyzers is created in this thesis and macro is on the CD for presentation of measurement results.
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Methods of measuring bit rates
Franc, Jan ; Mišurec, Jiří (referee) ; Zeman, Václav (advisor)
Study and basic benchmarking methodology description of network connections based on the IP was the objective of bachelor work. I resulted above all from RFC standards, by which are directed most of Internet protocols. Particular procedures for testing are explained in RFC 2544. On the basis of parameters analysis, I suggested conception and gave shape to web application which allows identify referenced basic transfer parameters of Internet connection (downstream, upstream, latency, scattering of connection speed). Application doesn’t require no add-ons and modules on user side. It is built on server programming language PHP with usage of relational MySQL database, in which are stored data. Client scripting language JavaScript is also used. Application offers measuring of mentioned parameters both to visitors and to registered users. Matter of course is user registration; work with history of carried out measuring, sending private messages between registered users. Above whole application exists administrator account.
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Methods for the measurement of bit rates in data networks
Franc, Jan ; Martinásek, Zdeněk (referee) ; Zeman, Václav (advisor)
The target of this master's thesis were the known methods for testing the quality of transfer parameters of data networks. I have studied the RFC 2544 document to analyze these tests. From that information and by studying other existing web-based applications I was able to design a concept of my own application that will allow to measure basic quality parameters of transfers made through the Internet (the parameters: downstream, upstream, latency, variance of these and a traced route). My application doesn't require any modifications on the user's system. It's built on the server-based programming language PHP and uses the relational database engine MySQL to store measurement and user data. On the client side, it's assisted by the JavaScript scripting language. Both registered users and visitors are allowed to perform the listed measurements. Registered users are able to browse the history of their own benchmark results and also to send messages to others. There is an administrative account to oversee the operations. Another part of my thesis work is an application for Windows that performs the same measurements but does not use JavaScript.
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