PROQOS--Dynamic SLA Management in DiffServ Space Links

  • Authors:

  • Manuel Pessoa;António Alves;Gonçalo Quadros;Fernando Boavida;Michael Henke;Milva Natcheva;Patrick Halke;Peter Maurutschek;Zenon Huskic;Kurt Wagner;Frank Zeppenfeldt;Roberto Donadio

  • Affiliations:

  • Critical Software SA, Portugal;Critical Software SA, Portugal;Critical Software SA, Portugal;University of Coimbra, Portugal;VCS Aktiengesellschaft, Germany;VCS Aktiengesellschaft, Germany;VCS Aktiengesellschaft, Germany;Salzburg University, Salzburg, Austria;Salzburg University, Salzburg, Austria;Salzburg University, Salzburg, Austria;European Space Agency, The Netherlands;European Space Agency, The Netherlands

  • Venue:
  • Journal of Network and Systems Management
  • Year:
  • 2004

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Abstract

Several base elements for the provision of quality of service guarantees have been developed in the recent past. Of these, the Differentiated Services (DiffServ) architecture stands out as the most promising. In spite of this, various issues remain, especially when multidomain DiffServ services are concerned. In this case, some forms of distributed management of Service Level Agreements that allow the specification, exchange, enforcement and monitoring of quality of service data must be in place. Although, again, some isolated solutions exist for each of these problems, considerable effort is necessary to make them work together. The project presented in this paper tried to assess the feasibility of providing differentiated quality of service in satellite IP networks, by developing a dynamic Service Level Agreement management solution for an IP over Digital Video Broadcast Satellite system. The functionality of the implemented system comprises system configuration, dynamic SLA negotiation, QoS monitoring and metering, SLA conformance checking, and QoS reporting to customers.