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Proof of Concept of DiffServ-aware MPLS Traffic Engineering: A VoIP-based approach

AymenBouzid,AymenZelfani

DS-TE is a hybrid technology that combines MPLS-TE‟s tunnelling capabilities with QoS-DS‟s guaranteed service specifications and techniques. In this paper, DS-TE‟s building blocks, MPLS-TE and QoS-DS, are compared one against the other in order to pinpoint the basic differences and if possible the similarities between both technologies in order to better assimilate the addition brought in by the development of DS-TE. Based on the probing and simulation capabilities of Cisco‟s IP SLA conducted on three topology scenarios running one of these technologies at a time, the concept validity and importance of DiffServ-aware Traffic Engineering is proven and clarified. However, the testing scenarios will be solely oriented towards the case of VoIP traffic cases.