Theme of master's degree work: "Internet traffic research"
Author: Parkhomenko Stanislav Alexandrovich
Abstract of thesis
1. Introduction
Significant additional expenses for designing of a network, purchase of the equipment, its operation and service demand from the developer of study and an estimation of set of variants of decisions for short time intervals that is impossible without a greate knowledge and skills in use of the automated technologies and tools of designing of computer networks. In this work I analyze problems of designing and modelling of networks. To fill all problems after the analysis of existing programs of designing and service of networks has viewed the program of current work.
2. Problems of research
The problem is researching of existing technologes for net development and analises. First task is learning of standard programms for internet research, and utilities, such NetMap, Spider and others. Then I research wellknown system for net development and building. It is NetCracker. And, certainly, the last phase - it is developing application, which will cover all negatives all standard instruments of net modeling, and expending them, also. This program will develop net and modeling on real dates.
3. Scientific novelty
Scientific novelty consist in building new wellfunctionality instrument for development and modeling networks. For now I find very little programs, which not open good this problem.
4. Planning purchase
Mainly all world covered of nets, global and local. I want to making easy for net development and traffics thread. This master's work will be in this metter.
5. Existing development
There are many examples of modeling programms. One of this - it is NetCracker programm. The system represents CASE-tool of the automated designing, modelling and the analysis of computer networks with the purpose of minimization of expenses for development of networks and preparation of the design documentation. Allows to make experiments which results can be used for a substantiation of a choice of type of a network, environments of transfer, network components of the equipment and a mathematics software. Software NetCracker allow to execute gathering of corresponding data about an existing network without stoped its work, to create the project of this network and to execute necessary experiments for definition of limiting characteristics, opportunities of expansion, change of topology and updating of the network equipment with the purpose of its further perfection and development. With NetCracker it is possible to project computer networks of various scale and purpose: from the local networks numbering of tens of computers, up to the global networks constructed with use of a satellite communication. In structure of software NetCracker there is a powerful database of network devices of leading manufacturers: workstations, servers, environments of transfer, network adapters, repeaters, bridges, switches, the routers used for various types of networks and network technologies.
6. Problems and questions
All programs for modelling and diagnostics of networks, including and program NetCracker, investigate an ideal network, and do not use real addresses. In these programs it is possible to construct a network, adding the existing equipment (network cards, switches, hubs, etc.), but they do not consider delays in the networks conserned with different unseen problems. Among such it is possible to allocate, for example, congestion of the certain unit in a network, actions of any noises and many other things. Therefore it would be good to write the program for revealing such moments in work of a network. This program will import data from program NetCracker. On the picture the real network with the real equipment which is constructed in NetCracker is shown.
7. Existing results
The program traces availability of units of the Network under report ICMP. For this the program periodically directs inquiries, in accuracy programs similar to inquiries ping and checked with presence of the responses testifying to activity of corresponding units and regular work of liaison channels. The program is stand on sending of inquiries with an interval in 6 seconds and expectation of the response within 4 seconds. If necessary, it is possible to set any time within the limits of from 100 milliseconds till 10 minutes. Units which inquiries go, get out of the set list in cyclic sequence. The list can contain a lot of units (more than hundred), in the main window of the program it is possible to observe at the choice of reaction up to thirty units, depending on the sizes of a window of the program. The received responses are added to the daily report which can be looked through, printed and saved in the file on a disk. The sanction of the report - one minute. If any unit does not answer inquiries during set time the opportunity of start of an external command file is haved. If necessary, the program can be adjusted on loading at start of operational system and work in an automatic mode. The program can work, as service. For reduction of loading on the processor the window of the program can be curtailed into a icon on system area of the panel of problems. On a icon the condition of the most problem unit received by the analysis of its several last responses is displayed.8. Conclusion
From existing analises of network, and monitoring program, and instruments of modelling that disadvantages must be covered.9. Literature
1. Ion Snaider "TCP/IP programming" - "Piter", 2002 - 1024 с.2. Villiam Stolings "Networks, technologies of internet" - "bhv", 2005 - 989 с.
3. K.Ross "Networks" - "Питер", 2006 - 768 с.