Design of a Label Switch Controller for Differentiated Services in IP and ATM Integrated Networks

MPLS is highlightened as the most promising technology for the integrated IP-over ATM backbone networks. Nowadays, one of the important practical issues in MPLS is the capability to provide Differentiated Services. For integrating IP and ATM with scalability, MPLS based ATM switch network can be available, especially for the fast Internet services adding Layer 3 routing module to the existing ATM network, and can provide scaleable Internet services to users with various service level. In this paper, we establish Queuing model for FE(Forwarding Engine) including service differentiation, which performs IP address lookup in MPLS LER, and analyze performance of FE with Internet traffic by statistical Internet protocol analysis. Also we take a closer look into our LC-ATM switch on which we implement MPLS controller that can provide both user and provider with relative proportional differentiated service in a feasible and reliable manner. Key-Words: Internet, MPLS, Switching System, Performance, Forwarding Engine, Service Differentiation