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Modelling of L2 Loop-Preventing Protocols
Hrnčiřík, Matej ; Grégr, Matěj (referee) ; Veselý, Vladimír (advisor)
This thesis informs about currently used technologies, which provide loop protection on data link layer of computer networks. It clarifies issues of Ethernet networks. Chosen protocols are then closely described. There are presented advantages and disadvantages of chosen protocols and they are compared to other technologies. Practical section describes the initial implementation of IS-IS in OMNeT++ environment, which serves as the basic building block of TRILL protocol. An important issue is to verify correctness of implementation.
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ZigBee Protocol for Wireless Sensor Networks
Bartek, Lukáš ; Nagy, Jan (referee) ; Zbořil, František (advisor)
The aim of this work is to analyze ZigBee standard - its characteristic, potential use and testing its implementation in simulators. This work is consists of four sections. The first section analyses the structure of IEEE 802.15.4 and ZigBee protocol stack means of communications, security and development of this standard. The second section describes features of available simulators. The third section is the manual for creating simulation environment in the selected simulator. The final section shows practical preparation, process and result interpretation. The goal of this project is evaluation of tested simulator for education and development.
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OMNeT++ Extension with ACL Filtering Module
Suchomel, Tomáš ; Ryšavý, Ondřej (referee) ; Matoušek, Petr (advisor)
This bachelor's thesis describes discrete simulation of network in OMNeT++. We are exploring effective representation and evaluation of ACL rules by advanced data structures based on interval decision diagrams. OMNeT++ is extended by filtering properties of packets using access control lists. Because ACL filtering is not supported in OMNeT++, it was added as a brand-new module, whose concept and implementation is described here. Practical usage of the implemented module is demonstrated on a simulation of real nontrivial network. We also analyse results of the simulation and verify them by comparison with real network behaviour.
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Multicast Distribution Trees Modelling in OMNeT++
Malik, Adam ; Ryšavý, Ondřej (referee) ; Veselý, Vladimír (advisor)
Support of multicast routing and its implementation is one of the main goals in nowadays computer networks. Adapting new technology could be often challenging and connected with difficulties. For this reason its better to try it in some simulating enviroment and implement it only after successful results of tests and simulations. The aim of this diploma thesis is to familiarize the reader with the multicast routing, describe the possibilities of network testing in OMNeT++ and come up with new multicast routing framework for this discrete simulation tool.
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Modelling of OSPFv3 Link-State Routing Protocol
Ruprich, Michal ; Grégr, Matěj (referee) ; Veselý, Vladimír (advisor)
The thesis deals with simulation of routing protocols. The aim is to create a functioning model of OSPF link-state protocol in the simulation framework OMNET++. OMNET++ is a discrete simulation environment which was created to provide means to build models of various network protocols and technologies. Chapters in the first part of the thesis focuson the theoretical foundation of OSPFv2 and OSPFv3 and their differences. Important data structures, finite state automata and communication techniques are described and the information is later used to implement the model itself. The chapters in the second part deal with the implementation of the model in C++. The created model reflects the functionality of OSPF on Cisco devices.
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Comparison of Distance-Vector Routing Protocol
Cocuľa, Maroš ; Grégr, Matěj (referee) ; Veselý, Vladimír (advisor)
This work deals with comparing the distance vector routing protocols. More accurately, protocols EIGRP, RIP and Babel. The aim is to compare information using the simulation OMNeT++, as well as the physical connection. Part of the work is a detailed description of the protocols, simulator OMNeT++ and the libraries INET and ANSAINET. Finally, we summarized the results of experiments and the comparison of protocols with each other.
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Modelling of L2 Management Protocols
Rajca, Tomáš ; Marek, Marcel (referee) ; Veselý, Vladimír (advisor)
This thesis deals with modelling and simulation of management protocols on the data-link layer in OMNeT++ tool. Namely protocol CDP, LLDP and ODR routing. These protocols are described in the first thesis' half and in the second half is described their design and implementation in ANSA project. Correctness of implementation is verified by comparison between simulated and real network examples. Also dependencies on module DeviceConfiguratoru were removed from ANSAINET library.
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Modelling IS-IS and TRILL
Marek, Marcel ; Grégr, Matěj (referee) ; Veselý, Vladimír (advisor)
In this thesis, we describe the principles of IS-IS routing protocol. We introduce the current state of implementation of this protocol within the simulation framework OMNeT++. We present the implementation of the IS-IS protocol created within the ANSA project. Moreover, we employ its variant called TRILL that is nowadays deployed as replacement of STP in data-center environment. The aim is to enable the modelling of the protocols without the need having to build physical architecture.
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Wireless 802.11 IP Networks and their models in the OMNeT++ simulation tool
Jakúbek, Peter ; Burda, Karel (referee) ; Růčka, Lukáš (advisor)
The bachelor work concentrates on familiarization with the standard IEEE 802.11. The work summarises the advantages, disadvantages, history and grouping of this standard according to norms. The great attention is paid to a user’s familiarization with the stimulating tool OMNeT++ and its extension Inet Framework. This extension helps to amplify the simulator for a supporting modelling of wireless nets. It supports models of a few protocols such as IP, UDP/TCP, Ethernet, PPP, IPV6, OSPF, RIP, and MPLS. It includes already programmed API modules from which is possible to create easily a wireless IP net.Programmes needed for a proper functioning of the OMNeT++ are described in corresponding paragraphs. A part of work deals with an installation and setting of programmes for accurate functioning of a compiler surrounding. Our work analyzes possibilities and manners of simulation of wireless IP nets which helps to create basic simulation model represented by standard 802.11. There are also included laboratory works in our bachelor work, which includes theoretical introduction to studied issues. Tasks are concentrated on ad-hoc and infrastructure mode. These tasks comprise of theory of problematic, detailed instructions for creating together with explanations, processed results and output of simulation
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Modelling OSPF Routing Protocols Using OMNeT++ Simulator
Danko, Martin ; Matoušek, Petr (referee) ; Ryšavý, Ondřej (advisor)
Open Shortest Path First (OSPF) is a dynamic, hierarchical routing protocol designed to support routing in TCP/IP networks. There is a deliberate need for large-scale simulation of OSPF protocol in order to understand its dynamics. Content of this bachelor's thesis is modeling and simulation of OSPF protocol in discrete event simulation system OMNeT++. The main focus is to give an insight of the architecture of the existing implementation in module OSPFRouting. The module OSPFRouting is also validated against OSPF implementation on the real routers. Next, the usage of OSPF simulation is demonstrated on the specific experiments.
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