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Design of new laboratory exercises for GNS3 environment
Barniak, Martin ; Koton, Jaroslav (referee) ; Jeřábek, Jan (advisor)
Diploma thesis deals with four laboratory tasks in simulation environment GNS3. Designed tasks are primarily focused on comparison of IPv4 and IPv6 protocols. In the first task the subject is concerned about OSPFv2 and OSPFv3 routing protocols. Next themes are transit techniques like NAT-PT and tunneling like GRE and 6to4. The second task is focused on configuration of routing protocols like EIGRP and EIGRPv6. Next sections are concerned about DHCP and ICMP protocols within IPv4 and IPv6 protocol suits. The third task is primarily focused on security relations of protocol suite IPv6. It contains OSPFv3 authentication, access lists and Cisco stateful IOS firewall. Content of the fourth task is protocol MPLS. First part of this task is concerned about basic configuration of this protocol and second part is focused on MPLS within IPv6 environment. All tasks contain test questions and individual part task.
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Příprava virtualizační platformy pro výuku předmětů počítačových sítí
Fiša, Martin
This final bachelor's thesis focuses on the virtualization of a network laboratory designed for educational purposes. The first part of the thesis reviews simi-lar works identified through the keywords listed below. Subsequently, the basic information about virtualization and related concepts is presented in the following section. The reader is introduced to the possibilities of network simulation, with an analysis of their differences, advantages, and disadvantages. Based on this evaluation, a specific solution is chosen, which will then be elaborated. In the next section, a draft for the network laboratory is created, showcasing selected features. These features will be further detailed and explained, illustrating how they could function in a real-world environment. In conclusion, an overall assessment of the program is conducted, evaluating its potential suitability for creating virtual laboratory tasks in the teaching process at the Faculty of Business and Economics, Mendel University.
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Analysis of VPN tunnel technologies
Šopík, Adam ; Dvořák, Jan (referee) ; Kubánková, Anna (advisor)
The bachelor thesis is primarily focused on the study of network tunnels and how they affect physical and network parameters. The advantages and disadvantages that different technologies bring with them are discussed. The aim of the thesis was to measure several types of network technologies and determine their effect on network operating parameters such as delay, throughput and CPU load. The thesis also includes the design of one lab assignment for students that focuses on troubleshooting tunnels. This assignment aims to provide students with hands-on experience and improve their skills in solving tunneling related problems.
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Generation of IPv6 and ICMPv6 packets and their impact on the operation of network devices
Phan, Viet Anh ; Martinásek, Zdeněk (referee) ; Jeřábek, Jan (advisor)
Tato diplomová práce se zabývá problematikou fungování IPv6 (Internet Protocol verze 6), ICMPv6 (Internet Control Message Protocol verze 6), DHCPv6 (Dynamic Host Configuration Protocol verze 6), NAT64 (Network Address Translation 64) a DNS64 (Domain Name System 64) protokoly. Výzkumný proces je realizován nastavením síťových laboratorních scénářů, ve kterých si stanice vyměňují informace prostřednictvím protokolů IPv6. Ke zpracování a generování požadovaných typů paketů IPv6 za specifických okolností se používají nástroje, jako je vlastní program, aplikace Ostinato a stroj Kali Linux. Výsledky experimentu jsou analyzovány s cílem poskytnout správcům sítí nebo specialistům úplnější pochopení funkce protokolů IPv6 a také možných zranitelností.
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Analysis of the influence of network technologies on the operating parameters of the device
Hynšt, Boris ; Dvořák, Jan (referee) ; Kubánková, Anna (advisor)
This bachelor work is focused on study of networking technologies and their effect on physical performance of router. From all the performance variables, the most important for this work are CPU usage and available bandwidth, also how much can each of the technologies affect these variables. For this purpose simple topology was created and all of the technologies were measured and compared to each others. On top of that there was a simple test, that was put in place to find out, if it is possible to make these performance tests with chosen networking simulator.
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Application for automatic control of CISCO device configuration
Zbořil, Tomáš ; Jeřábek, Jan (referee) ; Kubánková, Anna (advisor)
The problem of mismatched running configurations on the networking devices is common and it is not always easy to troubleshoot. Another problem of the same scale is an analysis of the routing information in routers, its heterogeneity in terms of dynamic routing protocols, numerous various settings, and last but not least, management of these protocols. These problems require a software solution that would be helpful in analysis and would allow for automated addressing of problems found during the analysis. This master's thesis attempts to do this by designing and implementing such program for the protocol OSPFv2. It uses the SSH protocol to allow for retrieval of running configuration files from the devices and their comparison to the user-added configuration files. SSH protocol is also used to run commands on the devices and to gather their outputs, which are subsequently analysed. The output of the analysis is used in automated error correction, the correctness of which, is checked by the presence of the routes on the routers to the rest of the network.
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Optimalization Of Mobile Access Transport Network For 4g And 5g
Kolackova, Aneta
This paper deals with processing delay on edge devices (routers) in Radio Access Network (RAN) in the cellular systems with respect to the used operating system. Operating systems that allow virtualization and are designed for use in access networks are considered and compared i.e., Cisco IOS XE and the VyOS. Following the obtained simulation results from the GNS3 simulation tool, the right selection of the OS enables to achieve decreased processing delay in the given topology and communication scenario. Further, the findings obtained from the simulation scenarios indicate the need for more advanced simulations as the next-generation mobile networks i.e., Beyond 5G (B5G) are expected to handle data traffic with more demanding requirements on the Quality of Service (QoS).
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Evaluation of MPLS approach as a WAN technology for data transmissions in critical information infrastructure
Formánek, Juraj ; Blažek, Petr (referee) ; Fujdiak, Radek (advisor)
Thesis deals by using MPLS technology in energy critical information infrastructure and its comparison with another modern approach in the area of the WAN management. For this purpose was chosen a Software-defined Wide Area Network technology. This thesis contains theoretical description and practical tests of particular MPLS technologies on the WAN topology, which is considered as a virtual real topology of the EG.D’s company. Test were simulated in GNS3 emulator, using Cisco routers. Practical test were firstly focused on availability test when link or node failure occurs and secondly on route- reflector failures. Conclusion sums up appropriate approach for data transmissions in critical information infrastructure based on informations or practical test in this thesis.
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Measurement of qualitative parameters in the access network
Kejík, Tomáš ; Slavíček, Karel (referee) ; Grenar, David (advisor)
The theme of this bachelor’s thesis is „Measuring of qualitative parameters in an access network.“ The aim of this paper is a characterization of multimedia broadcasts in access networks and the creation of a functional network generator. The theoretical part of the paper is dedicated to analyzing key broadcasting parameters, which affect the resulting quality of network broadcast. Furthermore, used network protocols that are given for network and multimedia broadcast are analyzed. Simulation is done by using of GNS3 software. After that, transferred data were measured. Side effects affecting the functionality of the resulting transmission were subsequently analyzed. Another part of the paper is the practical part, which is focused on creation of a network generator by using the Bash language and making a script to facilitate turning on the generator for different counts of clients. At the end of the paper, the broadcast parameters were evaluated.
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Virtualization of laboratory tasks for the CISCO course
Abbasi, Farhad ; Komosný, Dan (referee) ; Kubánková, Anna (advisor)
Tato bakalářská práce se zabývá laboratorními úlohami pro novou certifikaci CISCO (CCNP ENARSI), seznámením se s tématy, výběrem nejvhodnějšího prostředí pro simulaci laboratorních úloh, vytvořením topologie pro každou laboratoř. Kromě topologie byl vytvořen konfigurační soubor (.txt) a nahrán do příslušného zařízení pro úlohy zaměřené na hledání problémů. V neposlední řadě bylo navrženo a implementováno řešení vzdáleného přístupu pro připravené laboratoře.
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