Label Switched Path Dimension and Bandwidth Assignment in MPLS Networks

摘要

This article describes an integrated model for label switched path (LSP) dimension and the bandwidth assignment in MPLS networks. We first specify the problem as two sub optimization tasks, the optimal LSP dimension for each forwarding equivalence class (FEC) of service from an ingress router to an egress router and the optimal bandwidth assignment for the links between MPLS routers. As a solution for that, we then present a hybrid algorithm as a combination of the heuristic constraint-based routing for determining the optimal LSP and of the linear integer optimization for the effective bandwidth assignment of links in MPLS networks. We have used the model for network element failure simulation, traffic load analysis, designing for capacity growth and for capacity upgrading in MPLS networks.