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Management of data networks based on IP protocol
Patala, Petr ; Fojtová, Lucie (referee) ; Novotný, Vít (advisor)
The objective of this master’s thesis is monitoring and management of computer networks via SNMP protocol and its practical application. The main part describes working with SNMPc program in an experimental network through implementation of its parts into the network and configuration of SNMP agents on routers, switch and end station. This thesis includes the results of traffic testing, disconnected links, effects of traffic load on QoS parameters, making longterm statistics, baselines and alarms. The thesis also includes parametres obtained with SNMP protocol from network nodes and end station.
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Measurement of network traffic at access point
Novák, Ondřej ; Škorpil, Vladislav (referee) ; Molnár, Karol (advisor)
This master’s thesis focuses on the issue of measurement of parameters of network traffic of wired and wireless networks. The first part theoretically describes SNMP protocol and application interface API, that form the basis for acquiring and evaluating data. The next section describes known MIKROTIK platform and software solutions for the alternative possibility of implementing a new feature. The last part closely describes the created application. It is a simple information system, whose task is to get information and evaluate it using the known functions. The conclusion of the work is a few tests of this application, assessing the real operation.
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Managing Mobile IP enabled networks with SNMP protocol
Závodný, Ondřej ; Vajsar, Pavel (referee) ; Skořepa, Michal (advisor)
The content of this thesis is to research possibilities of using SNMP for management of Mobile IP activated entities. The first two chapters deal with theoretical analysis of Mobile IP protocol, and Simple Network Management Protocol. The Mobile IP protocol analysis focuses especially on the elements Home agent and Foreign agent. In the SNMP chapter the analysis focuses mainly on ways to exchange messages. Another part of the document is devoted to a description of laboratory networks com- posed of routers Cisco 1841 and the configuration of them. Finally is described the programmed application to manager these devices in JAVA, which is included in Annex. The program periodically sends SNMP queries and finds relationships between the Home agent and the mobile nodes, and between the foreign agent and the mobile nodes. The application has a user-friendly interface that is shown on the attached flash animation. Finally, the thesis summarizes the concepts described in previous chapters and the goals to achieve.
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Design and implementation of model architecture of MIB system database
Mikulica, Vladimír ; Hošek, Jiří (referee) ; Molnár, Karol (advisor)
The submetted work deals with the systems design and the implementation of the model database MIB. The work is the introduction into the protocol SNMP (Simple Network Management Protocol) and the database MIB (Management Information Base), which describes in detail branch MIB II. This branch is the current standard for the management of objects using SNMP. Consequently, there are explained different data types that the MIB database uses. Furthermore, the work describes the procedures for the design of the database MIB in the language of ASN. 1 according to RFC 2233 and the subsequent transfer of the MIB database, available through the compilers into the langure C. In the following chapters of the work, each of the models that were created in the simulated environment OPNET Modeler during the implementation of a comprehensive simulation scenario are documented more in detail. The above mentioned parts implement the communication between the manager and the agent. The state machine and the individual blocks of the model are described so that it could be later re-assembled by other candidates.
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Implementation of service functions for work with MIB database in simulation environment OPNET Modeler
Ruml, Martin ; Skořepa, Michal (referee) ; Molnár, Karol (advisor)
Implementation of service for work with MIB database is subjeckt the bachelor’s thesis. MIB database is system database which is instrumental for storage of control informations in network elements. A first chapter is instrumental like a introduction to the control computer networks. A second chapter describes the basic features of protocol SNMP. The protocol SNMP is a standardized application protocol which uses for a transmission control informacions from and to the system database MIB. The protocol is based on a draft manager-agent when the manager is mostly active who enquire of the agent for the values of concrete items. A next chapter deals with a structure and standards for the MIB database. It describes a basic enbranchment among the administrative organizations. A main part of working is devoted to a proposal and a implementation of servece functions MIB database. The main requirements for the MIB database in light of a cooperation with the protocol SNMP are identified in this chapter. These processes are trained-in to the experiment implementation of MIB database. The implementation is written in C++. A header file of the classes and supportive functions who implement basic mechanisms of MIB database and its methods for a tender the database created from the proposal. The header file contains the several processes for an easement of cooperation MIB database with the application protocol SNMP, too. A final chapter shows the using of designed classes. The created programe is equipped with a graphics interface who uses the functions for a local access. Very easy modul for the comunication with the database through the messages of SNMP is among next shown functions in the programe.
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Administration and configuration of simplified database QoS MIB
Macura, Miroslav ; Matocha, Tomáš (referee) ; Hošek, Jiří (advisor)
The main aim of this work was to study the issue of the SNMP protocol and MIB database in order to focus on management and configuration of MIB database using the SNMP protocol. The Master's thesis in detail describes especially creating a communications model of the Manager - Agent type in an OPNET Modeler. In this modeling tool we created exchange of information from the side of the Manager to the side of the Agent via SNMP packets. The Master's thesis is mainly focused on the creation of the SNMP packet according to defined rules, then on reading of information from the MIB database on the side of the Agent and saves this information to the Manager’s MIB database. Exchange of informations is realized via the messages of type GetRequest, GetNext and GetResponse. These models are programmed in language C/C++ and then implemented into the environment of OPNET Modeler.
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Monitoring Application for Multicast sessions
Kopecký, Martin ; Komosný, Dan (referee) ; Šimek, Milan (advisor)
This work deals with a monitoring application for multicast sessions. The general aim is to develop the application for monitoring multicast sessions from network elements of a laboratory computer network. The first part describes possibilities of monitoring computer networks in terms of monitoring techniques and protocols. The second part contains a topology of the laboratory computer network and several basic commands for setting of the multicast in Cisco IOS. The third part is devoted to the developed application for monitoring the multicast in Java language. The last part describes the testing on an actual multicast network and an example of such testing is stated there.
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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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Advanced modelling of SNMP behaviour in OPNET Modeler simulation environment
Bezchleba, Josef ; Skořepa, Michal (referee) ; Molnár, Karol (advisor)
The aim of my diploma is to introduce the SNMP protocol designed for remote device management to the readers and present its implementation into the Opnet Modeler simulation environment. For the implementation the DiffServMIB database has been chosen, which describes the components of differentiated services mechanism. My diploma thesis describes in detail the possibilities of application of the DiffServMIB database in traffic management. The design of a simulation model, which represents the differentiated data processing in input and output direction on a router interface, is also introduced. Next, this model is implemented into the Opnet Modeler simulation environment. The goal of this simulation model is the possibility of simple configuration of individual MIB attributes. In my work I also suggest an implementation method able to interconnect the MIB database with the configuration process of the active network element - with focus on output procedures of DiffServ mechanism.
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Automatic topology recognition and network monitoring based on FreeBSD
MACEK, Petr
The goal of the Bachelor Thesis is the creation of system tool for topology recognition and following LAN monitoring. This tool will be built on OS FreeBSD and formed like bootable image suitable for running from the USB stick. Besides the lower layers protocols TCP/IP, the protocol SNMP will be used for topology recognition and network monitoring. The tool will monitor state, network transmissions and other values at active network components too. Communication with the user will be realized via www interface. The goal is to create the tool executable on any computer without installation, to perform quick topology recognition, its visualisation and basic monitoring. It is supposed to be the opposite of the tools of NMS type that need installation on server, database server and have other requirements.
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