PROQOS – Dynamic SLA Management in DiffServ Space Links
Manuel Pessoa
Critical Software, Portugal
Email: mpessoa_AT_criticalsoftware.com
António Alves
Critical Software, Portugal
Email: aalves_AT_criticalsoftware.com
Gonçalo Quadros
Critical Software, Portugal
Email: gquadros_AT_criticalsoftware.com
Fernando Boavida
University of Coimbra, Portugal
Email: boavida_AT_dei.uc.pt
Michael Henke
VCS Aktiengesellschaft, Germany
Email: michael.henke_AT_vcs.de
Milva Natcheva
VCS Aktiengesellschaft, Germany
Email: milva.natcheva_AT_vcs.de
Patrick Halke
VCS Aktiengesellschaft, Germany
Email: patrick.halke_AT_vcs.de
Peter Maurutschek
Salzburg University, Austria
Email: pmm_AT_cosy.sbg.ac.at
Zenon Huskic
Salzburg University, Austria
Email: zhuskic_AT_cosy.sbg.ac.at
Kurt Wagner
Salzburg University, Austria
Email: kwagner_AT_cosy.sbg.ac.at
Frank Zeppenfeldt
European Space Agency
Email: Frank.Zeppenfeldt_AT_esa.int
Roberto Donadio
European Space Agency
Email: Roberto.Donadio_AT_esa.int
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 multi-domain 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.
Keywords: Policy-Based Management, Service Level Agreements Trading, Quality of Service, DVB-S
JNSM: Vol. 12, No. 4, 2004
PROQOS – Dynamic SLA Management in DiffServ Space Links [Vol. 12, No. 4, 2004]
NOTE: only abstract of paper available on-line; please contact your library or the authors for the full paper
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