Computer networks used in Telecommunication, particularly the Internet, have been used to carry computer data only, but now they carry voice and/or video also. Because each type of this traffic has specific flow characteristics, each type has to be handled with a certain level of guaranteed quality. So based on that, IETF introduced a Quality of Service tool, called Differentiated Service. It offers different levels of service to different classes of traffic. Even then, the problem of congestion arises due to sharing of a finite bandwith. In the case of real time multi media traffic, congestion due to inadequate bandwith contributes heavily to the quality, whereas in non-real time traffic the effect of congestion is to make data transfer take a longer time. In contrast, real time data become become obsolete if they do not arrive on time. Therefore what is needed is some way of ensuring that during periods of congestion, real time traffic is not affected at all, or is at least given a higher priority than non-real time. / The motivation for the research that has been carried out was therefore to develop a rule based traffic management scheme for DiffServ networks with a view to introducing QoS (Quality of Service). This required definition of rules for congestion management/control based on the type and nature of IP traffic encountered, and then constructing and storing these rules to enable future access for application and enforcement. We first developed the required rule base and then developed the software based mobile agents using the Java (RMI) application package, for accessing these rules for application and enforcement. Consequently, these mobile agents act as smart traffic managers at nodes/routers in the computer based communication network and manage congestion. The rule base as well as the mobile agent software developed in Java (RMI), were validated using computer simulation. The contents of the research carried out have been presented in the thesis. / Thesis (PhD)--University of South Australia, 2006.
| Identifer | oai:union.ndltd.org:ADTP/267240 |
| Creators | Sankaranarayanan, Suresh. |
| Source Sets | Australiasian Digital Theses Program |
| Language | English |
| Detected Language | English |
| Rights | copyright under review |
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