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Mobile IPv6 in OPNET Modeler
Žáček, Martin ; Růčka, Lukáš (referee) ; Skořepa, Michal (advisor)
Master’s thesis includes knowledges about mobility support in IPv4 networks and studies abilities for mobility support in IPv6 networks. Describes protocols for mobility support, their functions and topologies like MIPv6 (RFC 3775), FMIPv6 (RFC 5568), HMIPv6 (RFC 5380) and F-HMIPv6. The thesis contains a design of the simulation MIPv6 in the OPNET Modeler program and the measured results are explained. There are analysis of source code for mobility support in MIPv6 too, which were used for design a new protocol according to FMIPv6 in the OPNET. The following parts of the proposal have been successfully resolved. The link-layer events detection, which triggers FMIPv6 protocol and implementation of two new types of messages, RtSolPr and PrRtAdv. Knowledges from this thesis could be used for next development of FMIPv6 in the OPNET. But could be used for generaly development new protocols working at network-layer too.
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Laboratory exercises in OPNET environmentfor Communication technolgies course
Kasper, Robin ; Hošek, Jiří (referee) ; Jeřábek, Jan (advisor)
This master’s thesis deals with the design of laboratory exercises for the Communication Technologies course that is included in the second year of bachelor’s degree in Teleinformatics. This course represents first introduction of students with network protocols and technologies, therefore, the thesis deals with just the basic physical technologies, routing protocols and transport layer protocols. The introductory part of the thesis is devoted to theoretical knowledge to particular tasks. For the design of laboratory exercises is used OPNET environment, concretely its unpaid version IT Guru Academic Edition 9.1. The first task is focused on the differences in two basic transport protocols Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). The second task is orientated on the differences in the transmission network parameters using wireless networks and Ethernet technologies. In the third task the routing protocols Routing Information Protocol (RIP) a Open Shortest Path First (OSPF) are compared. These are protocols of a group Interior Gateway Protocol (IGP) that are characterized by the usage within a single autonomous system. The last exercise is aimed at Asynchronous Transfer Mode (ATM) and Frame Relay technologies, which are technologies used mainly in networks Wide Area Network (WAN). All devised exercises are accompanied by detailed instructions for students including supplementary questions and tasks leading to individual work and reflection. The thesis includes model solutions to these four exercises and CD where are inserted all programs source codes.
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Increasing the efficiency of the handover in real network environment
Michalec, Richard ; Sobotka, Jiří (referee) ; Vajsar, Pavel (advisor)
The aim of this work is to study methods of handover used in WiMAX and WLAN networks, next suggest the posibility of simulation methods for WLAN handover in the simulation environment OPNET Modeler. This work is focused primarily on obtaining the information about neighboring AP and subsequent selection of a new AP using such information. The work describes in detail each processes solutions that are used to implement newscanning methods
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Data transmission in mobile networks
Bílek, Petr ; Molnár, Karol (referee) ; Havelka, Dušan (advisor)
The Bachelor’s thesis deals with mapping and usage of mobile networks of data transfers. It describes every particular generation of networks and technologies that they can use. This thesis is divided into two main parts, theological and practical. In the first part, the technologies of the second and third generation currently used for data transfer in mobile networks are described there. This concerns especially GPRS, EDGE and UMTS services. The thesis focuses on modulations used for these technologies, together with the coding and bit rates possible. It compares their advantages and disadvantages and presents their utilization among national operators. It also tries to sketch out the way the data services of mobile networks will proceed. The second part of the thesis is also divided into two parts. The first one is the simulation of the UMTS network with the assistance of the OPNET Modeller 14.5 environment. In this case, the thesis aims at two important characteristics - such as the dependence on the bit rate and distance of the primary station, and dependence on the bit rate and total load of the whole network. Both characteristics are observed mainly because of the bit rate and power characteristics. It describes objects and funcions of the OPNET environment. The next part in the practical section is the factual measurement of the Internet 4G service, provided by T-Mobile operator. The thesis focuses here on the presentation of the outcomes which were accomplished by the practical measurement of that service. The end of this thesis is dedicated to the comparasion of simulated outcomes with the outcomes practically measured, and to the conclusion of the results emerged from them.
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Simulation of high-speed network traffic
Tuchapets, Volodymyr ; Polívka, Michal (referee) ; Škorpil, Vladislav (advisor)
The objective of presented thesis is to study the theory of the high-speed networks of the type Ethernet, ATM and SDH and the introduction to their questions. In the first part of my thesis I am involved in the theoretical analysis of the particular networks and their contemporary use. I analyze the possibilities of the optimization of the networks both in the topology level and the level of the transfer protocols. The objective of my work was the finding of appropriate software for the simulation of the high-speed networks. I compared various simulation programs and I came to the conclusion that OPNET is the most appropriate and the most known. According to the assignment of the bachelor thesis I used the program IT GURU Academic Edition of the American software company OPNET. I simulated the four connections of the networks, I optimized and compared the results of original and optimized connection. On their basis I verified theoretical knowledge and came to the conclusion.
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Network mobility in Mobile IP
Havelka, Michal ; Novotný, Vít (referee) ; Skořepa, Michal (advisor)
his semestral thesis is focused on issue network mobility (NEMO) beeing extension of protocols Mobile IPv4 and Mobile IPv6. It describes basic principle function of protocols Mobile IP, defines differences between mobility of nodes and mobility of network and suggest various situations, which may occur in combination these two protocols. Further, it describes differences between basic protocol network mobility (RFC 3936) for IPv6 and it’s extension (RFC 5177) for IPv4. Practical part of work consist in simulation network mobility in application OPNET Modeler and discussion of results, which has been discovered on the base of this simulation.
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Scale free topology networks focused on MANET technology
Sehnálek, Adam ; Janovič, Filip (referee) ; Skořepa, Michal (advisor)
The main goal of my bachelor thesis is familiarization with a question of computer network with free topology aimed at MANET technology, or more precisely Motorola MESH. It deals with simulation of influence of bundle number within the network on data transfer using all possible routing protocols in Opnet Modeler. The first part contains description of basic networks with free topology and their characteristics. It devotes mainly to Mesh networks and mostly to Motorola technologies that are described there. All three Motorola network types can be found there - MOTOMESH Solo, MOTOMESH Duo and MOTOMESH Quattro. The second part of the thesis focuses on routing protocols available for MANET networks in Opnet Modeler. Principles and basic characteristics of protocols AODV (Ad-hoc On-demand Distance Vector), DSR (Dynamic Source Routing), OLSR (Optimized Link State Routing protocol) and TORA/IMEP (Temporally-Ordered Routing Algorithm) a GRP (Geographic Routing Protocol) are described there. The closing part of the thesis is dedicated to the simulation of individual protocols and their influence on transferring multimedia data through the network. It includes exact process of making the MANET network, configuration of individual components, choosing the necessary characteristics and after simulation view. It concludes also the final summary of all simulated protocols.
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Analysis of data transport in converged network
Menšík, David ; Hošek, Jiří (referee) ; Škorpil, Vladislav (advisor)
This thesis deals with data transmission applications in the converged network, focusing on the WiFi network IEEE 802.11. The theoretical part describes the cause and nature of converged networks. One chapter is devoted to a description of IEEE 802.11, which is next to different standards and options described architecture, coordination and access network QoS solution to that standard. The research is based on custom design converged networks, and WiFi elements in the environment of graphic simulation software OPNET Modeler. In the proposed network was also simulated the operation of services such as voice, video conferencing, FTP and HTTP streaming. Results of simulation data traffic in the network are then analyzed. At the Conclusion of the thesis, is in OPNET Modeller program created the role of laboratory. The essence here is the comparison of operating a converged network, with and without quality support services.
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Implementation of a simulation model for a simplified DiffServ-MIB database
Zeman, Otto ; Hošek, Jiří (referee) ; Molnár, Karol (advisor)
The aim of this work is to propose feasible solution for the simulation of the SNMP (Simple Network Management Protocol) protocol in the OPNET Modeler simulation environment. This work describes in detail individual procedures, which were chosen for this simulation . The work also contains an introduction to the OPNET Modeler simulation environment, the SNMP protocol, the DiffServ model and the DiffServ-MIB database. The main part of this work describes the algorithms programmed to model the functions of the SNMP protocol. Source codes of the algorithms programmed are included as well. The work deals especially with the functions for obtaining values from different levels of a multilevel model attributes, packet creation functions with dynamically changing length of user-data field, for the implementation process of a simplified DiffServ MIB database and with the functions for statistic creation.
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Analysis of Sharing Networks
Blažek, Libor ; Mašek, Pavel (referee) ; Horváth, Tomáš (advisor)
The aim of the thesis is the design and implementation of the protocol in OPNET Modeler. In this work will be developed all the elements have been used no default settings. In the first chapters, making simulation are defined packets. Another chapter consists of a block diagram of workstations, which are assigned to function blocks. The central process is created by the process model, also for the router. The individual elements are inserted into a variety of elements and subsequently used in the simulation. Connection is a new service that has been defined separately. One of the simulations will be created on a smaller scale and the other on a global scale with more features.
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