Μηχανισμοί παροχής ποιότητας υπηρεσίας σε δίκτυα κορμού

Μπάκας, Σωτήριος

Mechanisms for quality of service provisioning in core networks

Master Thesis

Author

Μπάκας, Σωτήριος

Date

2013

Abstract

In the era of globalization, companies are expanding rapidly. The same happens with the evolution of technology, so the Internet should support new and continuously upgraded services. Since, there is this tendency for growth and businesses are spreading geographically to more and more destinations, the need to connect to new locations grow. The number of locations is increasing which results to "deterioration" of communication and the problematic management of the increasing demands of the network. Therefore, it becomes imperative the technology upgrade, for quantitative, qualitative, safer and faster communication. Service providers face more problems because they have to serve multiple customers and all trying to create infrastructure in several different areas. Moreover, the competition in the market area is increasing, forcing service providers to offer cost-effective and manageable solutions to their customers. It seems that the multimedia applications gaining the popularity, thus it is now necessary to have quality of service (Quality of Service - QoS). The voice should have priority over other services, as it is very sensitive to delays. In addition, more and more video applications find their place in corporate networks as video conferencing solutions which give the possibility of time saving in modern companies, make them more flexible in their decisions and reduce the cost of travels. It is understood that for these applications should also be given priority. The more efficient management of bandwidth in networks is becoming increasingly important, particularly when the issue arises of the commitment of available resources in the network in order to improve performance. Many times we see in networks with large enough traffic load and limited resources, some of the links to remain unused and some of them to be overloaded. A technology that seeks to respond adequately to the challenge of efficient traffic management and to answer all the above questions is the Multiprotocol Label Switching (MPLS). This postgraduate diploma thesis, examines in the theoretical part the general characteristics and applications of MPLS and in the second part are presented some MPLS scenarios using the GNS3 emulator, concluding with the final chapter with the main conclusions, arising from the study of the MPLS mechanism, for which was elaborated this dissertation. For the elaboration of this dissertation, was designed and implemented a network topology which allowed us to develop and study the following scenarios: 1. MPLS - OSPF 2. MPLS - EIGRP 3. MPLS - RIPv2 4. MPLS - VPN 5. MPLS TE - CSPF (OSPF-TE) / Constraint-Based Routing

Postgraduate Studies Programme

Ψηφιακά Συστήματα και Υπηρεσίες

Department

Σχολή Τεχνολογιών Πληροφορικής και Επικοινωνιών. Τμήμα Ψηφιακών Συστημάτων

Number of pages

120

Language

Greek

URI

https://dione.lib.unipi.gr/xmlui/handle/unipi/8541

Collections

Τμήμα Ψηφιακών Συστημάτων

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