Implementation of Multi Protocol Label Switching – Virtual Private Network for Corporate Networks

Recently MPLS is used for building up VPNs in IP backbone, called MPLS VPN. To provide people with voice, data and all categories of multimedia services, distinguishing between data flows is a requirement. To address these router performance, Quality of Service and traffic engineering issues, Multi Protocol Label Switching (MPLS) was proposed for IP based internetworks. To achieve the security that is required for corporate users, Virtual Private Networks (VPNs) can be used to guarantee that traffic is securely tunneled over the Internet. MPLS based VPNs enable connectionless routing within each VPN community. This paper discusses the benefits available in IP VPNs and how the MPLS+BGP model is selected in the network. Then how a branch office connects itself to other offices using MPLS VPN services delivered by a service provider.