Design and Implementation of MPLS Layer 3 VPN

This paper presents a proposal for the construction and use of MPLS Layer 3 VPNs, with their design for interconnection of physical routers either without traffic redundancy or offering this quality. The incentive for the study and use of VPNs is given not only by the flexibility and privacy that these capabilities can offer to service providers and users, but mainly by the reduced cost they impose when compared to traditional circuits. The rapid growth of new protocols and solutions for implementing both the benefits of traffic engineering and quality of service offers the possibility of exploring noteworthy prospects for VPN implementation in the market scenario. The following topics cover the general design of MPLS Layer 3 VPNs, VPN feature interconnections, the implementation according to the test setup, and finally performance evaluation. The results are of critical importance for the benefits offered to service providers and users, and other events involved when adopting MPLS VPNs in their environments. The results also contribute to the conclusion that the implementation of MPLS VPNs is a migratory phase, given that the cost of an end-to-end VPN connection becomes smaller when we think about the capacity crunch issue in the production of optical equipment for the size of the CPE market.