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Modeling and Simulation of Spanning-Tree Protocol
Poláčeková, Simona ; Marek, Marcel (referee) ; Veselý, Vladimír (advisor)
This term project deals with the functionality of Spanning Tree protocols, especially the Rapid Spanning Tree Protocol, and the Multiple Spanning Tree Protocol. The primary usage of spanning tree protocols is the prevention of loops within the data link layer, the prevention of a broadcast storm, and also dealing with redundancy in the network. Moreover, the project contains the description of configuration of these protocols on Cisco devices. The main goal of this thesis is to implement the Multiple Spanning Tree protocol into INET framework within the OMNeT++ simulation system. Then, the implemented solution is tested and it's functionality is compared with the referential behavior in a Cisco network.
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Monitoring VoIP Networks
Drozda, Tomáš ; Marek, Marcel (referee) ; Matoušek, Petr (advisor)
This thesis deals with the monitoring VoIP networks. The main objective of this work was to design and then to program monitoring systems for IP telephony network using SIP signaling protocol, primarily for billing purposes. Another important objective was to explore the possibility of obtaining geographic location of the communicating stations. The theoretical part of the thesis deals with the description of the SIP protocol. The rest of the thesis is focused to the design and implementation of the system. The system was implemented as a set of console applications that are complemented by a web application that is used to display the obtained data. Geolocation was solved with the help of IPInfoDb services that provides API for obtaining geolocation information.
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Modeling and Simulation of BGP
Novák, Adrián ; Marek, Marcel (referee) ; Veselý, Vladimír (advisor)
This Master's thesis deals with modeling and simulation of BGP protocol within the OMNeT++ environment. The BGP protocol is described with employed data structures and the finite state machine of BGP peering. Next, the basic configuration is outlined involving the setup of the BGP protocol on Cisco devices. Further, BGP for OMNeT++ state-of-the-art is investigated together with its lack of functionality and issues. The second part of this thesis deals with design, implementation, and testing of the new functionality of BGP protocol and simulation models. The last section describes the overall achieved results.
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Implementation of OSPFv3 for INET4
Galbička, Lukáš ; Marek, Marcel (referee) ; Veselý, Vladimír (advisor)
This thesis deals with simulation of routing protocol OSPF in simulation software called OMNeT++. OMNeT++ is a discrete modular simulator mostly used for simulation of computer networks. This thesis includes theory needed for an understanding of the functionality of OSPFv2 and changes in OSPFv3 for IPv6, which are implemented in the model itself. Moreover, thesis contains the configuration of OSPFv3 protocol on topology created from Cisco devices following by analysis of previous source files, state of implementation and its further extension. Thesis is finished with functionality testing and evaluation of results.
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Comparison of Link-State Routing Protocols
Zavřel, Jan ; Marek, Marcel (referee) ; Veselý, Vladimír (advisor)
This thesis deals with a comparison of two dynamic link-state routing protocols OSPF and IS-IS. These protocols are used to route within one autonomous system under control of one administrative entity. They are similar in theory but IS-IS seems to be much more popular in large topologies in practice. Goal of this thesis is to figure out how their properties and features manifest on given topologies on real routers and in simulations. Simulations are realized in discrete simulator OMNeT++ and real topologies are built with Cisco devices. Primary measured parameters are speed of convergence, bandwidth usage and message order. The simulation result may be affected by their implementation in INET and ANSAINET frameworks. Implementation properties of OSPF and IS-IS on Cisco devices are compared to their simulated counterparts in order to verify functionality of the simulation models.
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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 HSRP and GLBP Gateway Redundancy Protocols
Holuša, Jan ; Marek, Marcel (referee) ; Veselý, Vladimír (advisor)
This thesis deals with theoretical analysis of First Hop Redundancy Protocols. It describes Hot Standby Router Protocol, Virtual Router Redundancy Protocol and Gateway Load Balancing Protocol. It also shows examples of configuration of each protocol on Cisco devices with supported version of the Cisco IOS. Furthermore, this thesis includes design of two of these protocols, Hot Standby Router Protocol and Gateway Load Balancing Protocol, and their implementation in discrete event simulator OMNeT++ and Automated Network Simulation and Analysis library. Finally, the thesis presents results of testing of the implementations in comparison with actual Cisco devices.
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Ssh Attacks Detection on Netflow Layer
Marek, Marcel ; Barabas, Maroš (referee) ; Michlovský, Zbyněk (advisor)
This bachelor's thesis briefly describes the basic principles of SSH protocol, its architecture and used encryption. The thesis is mainly focused on datamining information from low-level network communication and usage of its results for attacks detection. It also describes dictionary attacks used on SSH service and with NetFlow shows further possibilities of increasing network security.
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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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