Proposed optimal LSP selection method in MPLS networks

TL;DR

This paper introduces an optimal LSP selection method in MPLS networks that reduces bandwidth usage by up to 15% through efficient pair selection, enhancing resource utilization in existing network infrastructures.

Contribution

It proposes a novel LSP pair selection method for MPLS networks that improves bandwidth efficiency and can be integrated with existing network management tools.

Findings

Bandwidth reduction of up to 15% demonstrated by simulations.

Method effectively reuses existing management tools and know-how.

Enhances resource utilization in MPLS networks.

Abstract

Multi-Protocol Label Switching (MPLS) had been deployed by many data networking service providers, including the next-generation mobile backhaul networks, because of its undeniable potential in terms of virtual private network (VPN) management, traffic engineering, etc. In MPLS networks, IP packets are transmitted along a Label Switched Path (LSP) established between edge nodes. To improve the efficiency of resource use in MPLS networks, it is essential to utilize the LSPs efficiently. This paper proposes a method of selecting the optimal LSP pair from among multiple LSP pairs which are established between the same pair of edge nodes, on the assumption that both the upward and downward LSPs are established as a pair (both-way operation). It is supposed that both upward and downward bandwidths are allocated simultaneously in the selected LSP pair for each service request. It is demonstrated by simulation evaluations that the proposal method could reduce the total amount of the bandwidth required by up to 15% compared with the conventional selection method. The proposed method can also reuse the know-how and management tools in many existing networks which are based on both-way operation.