Inter-Area Traffic Engineering in a Differentiated Services Network
N. Degrande
Network Strategy Group, Alcatel Bell
F. Wellesplein 1, B-2018 Antwerpen
Belgium
Email: natalie.degrande_AT_alcatel.be
G. Van Hoey
Network Strategy Group, Alcatel Bell
F. Wellesplein 1, B-2018 Antwerpen
Belgium
Email: gert.van_hoey_AT_alcatel.be
P. de La Vallee Poussin
Network Strategy Group, Alcatel Bell
F. Wellesplein 1, B-2018 Antwerpen
Belgium
Email: paloma.de_la_vallee_AT_alcatel.be
S. Van den Bosch
Network Strategy Group, Alcatel Bell
F. Wellesplein 1, B-2018 Antwerpen
Belgium
Email: sven.van_den_bosch_AT_alcatel.be
Abstract
In this paper, an off-line traffic engineering algorithm
is presented that optimises the single-path routing of Label Switched
Paths in a Differentiated Services IP domain by means of explicit,
Multi-Protocol Label Switching controlled non-shortest paths. This
algorithm allows traffic engineering up to 2500 traffic trunks in flat
networks with sizes up to 150 nodes while supporting protection,
pre-emption, Quality of Service, oversubscription and resource class
affinity. With proper extensions, the algorithm can be applied to
hierarchical networks, thus increasing the scalability properties for
network size with a factor of about 50. First the single-area
algorithm is detailed, then the concept and implementation of
hierarchy is introduced for inter-area traffic engineering. These
topics are illustrated with simulation results.
Keywords: traffic engineering, hierarchy, Differentiated Services, Quality of Service, explicit routing
JNSM: Vol. 11, No. 4, 2003
Inter-Area Traffic Engineering in a Differentiated Services Network [Vol. 11, No. 4, 2003]
NOTE: only abstract of paper available on-line; please contact your library or the authors for the full paper
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