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Modelling and Reliability Analysis of Campus Network at the BUT
Kraus, Zdeněk ; Ryšavý, Ondřej (referee) ; Veselý, Vladimír (advisor)
This thesis informs about technologies and architecture of computer network at BUT. It describes chosen technologies and some of theirs variants. Further, it contains simulation model design of a network switch device. That is followed by the model implementation with detailed description of model parts. Then, the model is tested on a set of simulation scenarios and it is evaluated in comparison with theoretical basis and real devices. In conclusion, thesis suggests future model development and improvements.
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VoIP in Jabber Client
Kulička, Vojtěch ; Veselý, Vladimír (referee) ; Mlích, Jozef (advisor)
Práce se zabývá možnostmi implementace VoIP do existujícího XMPP programu se sdílenou tabulí. Analyzuje možnosti využití současných technologií pro podporu VoIP. Cílem je nahrazení stávajících komunikačních knihoven klienta za telepathy. Dále také přidání VoIP.
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IPv6 Modelling in OMNeT++
Černý, Marek ; Grégr, Matěj (referee) ; Veselý, Vladimír (advisor)
OMNeT++ is a discrete-event simulator commonly used to build various network simulations. It can be extended by INET framework that supplies models of protocols and devices from TCP/IP environment. This paper explores current capabilities of INET to model IPv6, particularly routing. Implemented extension includes modules of dual-stack router and dual-stack host that support XML-based configuration of IPv6 addressing and static routing. We also introduce an OSPFv3 module that implements most of auxiliary features and is ready for future development of the routing protocol core.
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IPv6 Geolocation and Visualization
Suchomel, Tomáš ; Veselý, Vladimír (referee) ; Matoušek, Petr (advisor)
This master's thesis is focused on geolocation and visualization of IPv6 addresses. Several current approaches to geolocation have been discussed. Its main goal is to design geolocation database with regular updates with ability to visualize geographic location of the IPv6 address on the world map. Implemented system is gathering data about IPv6 prefixes from public Whois database. Gathered geographical addresses are mapped into coordinates by Google Maps Geocoding API. All gathered data are being saved into database together. Locations of IPv6 addresses are visualized via web-based Google Maps API. Moreover, the density mapping of IPv6 address blocks in particular countries can be visualized too.
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Architectures of Internet-Based Systems with Multicasting
Veselý, Vladimír ; Matoušek, Petr (referee) ; Švéda, Miroslav (advisor)
With rapid expansion of interest in multimedia and distributed computing applications across the Internet increases importance of optimized delivery of group traffic. According to current situation the best practice to achieve this goal is multicasting. This masters thesis summarizes multicasting methods and facts. Also it draws conclusions from practical application of presented information on commercial project.
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Fast Recognition of Application Protocol
Adámek, Michal ; Veselý, Vladimír (referee) ; Polčák, Libor (advisor)
This thesis focuses on methods for fast recognition of application protocols. Fast recognition is recognition with minimal delay from the time of capturing the first data packet sent from the source node. This thesis describes possible techniques and methods for recognition of application protocols and basic information and description of reference system for lawful interception in computer networks. Furthermore, the thesis describes analysis, design and implementation phase of a tool for fast recognition of application protocols. The conclusion of this thesis describes the results of tests performed by the tool and shows its limitations and possible extensions.
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Dynamic State of OMNeT++ Model via SNMP
Smejkal, Jakub ; Grégr, Matěj (referee) ; Veselý, Vladimír (advisor)
This work outlines ways of getting dynamic state into OMNeT++ model. SNMP as major technology was selected for reaching the goals. Protocols CDP and LLDP are participating in topology detection and in theoretical layer Breadth- first search is used. The output of this tool is file syntactically specied by NED language which is describing computer network.
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Multicast Routing Modelling in OMNeT++
Rybová, Veronika ; Matoušek, Petr (referee) ; Veselý, Vladimír (advisor)
Multicast traffic is common in today's networks. We need to simulate multicast architecture to be familiarized with its functionality in all situations. This thesis describes modelling and simulation of multicast routing using OMNeT++ tool. The text introduces protocol PIM and its particular modes (DM, SM, SSM, and BiDir) with emphasis on PIM-DM. The thesis focuses especially on design and implementation of OMNeT++ extension by multicast routing protocol PIM-DM. Correctness of implementation is verified by comparison of simulation and real network on example.
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Modelling and Analysis of Campus Network at the BUT
Kojecký, Vladimír ; Veselý, Vladimír (referee) ; Grégr, Matěj (advisor)
This thesis deals with the design and implementation of tools for creating a computer network simulation model. Network analysis is based on configuration files from connected network devices. According to the requirements of the simulation it is necessary in the configuration file to focus on data relating to the monitored elements and their properties, or which may be of some influence. The output is then passed on simulation environment to form the desired network model by the observed data, which is already possible to perform simulations.
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