A Centralized Model for Establishing End-to-End Communication Services via Management Agents

Slavica Boštjančič Rakas; Mirjana Stojanović

doi:10.7307/ptt.v31i3.2980

Slavica Boštjančič Rakas Mihailo Pupin Institute, University of Belgrade Volgina 15, 11060 Belgrade
Mirjana Stojanović Faculty of Transport and Traffic Engineering, University of Belgrade Vojvode Stepe 305, 11000 Belgrade

DOI: https://doi.org/10.7307/ptt.v31i3.2980

Keywords: centralized management, inter-provider, quality of service, service establishment

Abstract

This paper presents a centralized approach for establishing end-to-end communication services via management agents. The main proposal is the modular architecture of the third-party based Service Establishment Agent (SEA). The SEA manages inter-provider service negotiation process with per-domain management agents through an appropriate signaling agent. It also receives and interprets end-toend service requests, selects inter-domain paths, performs mapping of service classes among domains on the path, and evaluates conformance of the offered service level with the required one. It allows implementation of different algorithms for the aforementioned functions as well as their selection and combination according to the predefined management policies. Simulation results show that the proposed model significantly outperforms the distributed model in terms of service negotiation times. In the prototype development process, a policy-based solution for mapping of service classes was implemented. The performance evaluation shows that processing requirements for handling multiple service requests are modest, while benefit of the SEA approach is the lack of need to build long-term consensus among providers about technical choices for achieving network interconnection. The SEA architecture is completely independent of the quality of service mechanisms available in particular domains.

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Slavica Boštjančič Rakas, Mihailo Pupin Institute, University of Belgrade Volgina 15, 11060 Belgrade

Telecommunication networks department

Research fellow

Mirjana Stojanović, Faculty of Transport and Traffic Engineering, University of Belgrade Vojvode Stepe 305, 11000 Belgrade

Telecommunications Department

Full Professor

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