Flow admission control for MPLS support of DiffServ

Abstract

In this thesis, an efficient traffic flow admission control mechanism supporting DiffServ is proposed to provide QoS in MPLS networks. We propose a dynamic and flexible flow admission control for MPLS support of DiffServ to prevent the waste of resources. Ingress LSRs may collect information to find out the congested area using control messages exchanged in QoS routing. We exclude the congested LSR from routing decision and LSP aggregation. Thus, the proposed model realizes improved traffic engineering by efficient resource utilization and traffic flow admission control while satisfying the MPLS property of separating control and forwarding. © Springer-Verlag Berlin Heidelberg 2002.