Proposed Optimal LSP Selection Method in MPLS Networks
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).