1 Configuration Managements for BGP/MPLS VPN and DiffServ-aware-MPLS VPN

VPN efficiently connects Intranet sites which are distributed over wide areas. Internet based VPN has lots of merits, such as flexibility in network configuration, expansibility, and low operational cost compared to existing leased line private network. Since the request of reliable information exchange through Internet is increasing explosively, and the MPLS network can offer efficient traffic-engineering function, the necessity of MPLS VPN is also increasing rapidly. In order to provide MPLS VPN efficiently, Network Management System(NMS) must be able to collect information of many MPLS VPN-sites in the network, and manage the information of each node systems and links in service provider network that supports MPLS VPN. In this paper, we propose an MPLS VPN configuration management system that is designed and implemented by Object-Oriented Programming (OOP). We explain the configuration management function of QoS guaranteed BGP/MPLS VPN where expansion of site is easy, and a DiffServ-aware-MPLS VPN that provides DiffServ with guaranteed QoS. We designed and implemented BGP/MPLS VPN Manager module and DiffServ-aware-MPLS VPN module in NMS with MOs for VPN and VPN-site. Also, the MPLS VPN management system has CLI (Command Line Interface)-based auto-discovery function to collect information of previously configured MPLS VPNs