Mpls Vpn In The Mianyang City Government Network Analysis

As more sharing both resource and information,which comes from e-government network and enterprises internal network,the traditional access way of Private line based on fixed place of corporate network,already is difficult to meet the demands of modern enterprises .The virtual private network refers to depend on ISP(Internet service provider) and other NSP(network service provider),which is the technology of setting up the special-purpose data communication network in the public network. which used to solve the problem occur during the process of communication. And one VPN module,which use reliable label to transact based on MPLS,has managed the request well.At first,It will talk about the network requirement of e-government and enterprise,do the further research on some traditional VPN forms like GRE,IPSec and the working mechanism of VPN which is based on MPLS protocol.According to the principle,The network MPLS VPN adopts labels exchange,and ssolves QoS problems that puzzles traditional IP network.MPLS VPN offers the flexible tactics to control,and can meet different user's special requirements.At the ratio of bandwidth price and the ratio of performance-cost.It has the more advantage comparing with the others wide area network. the process of VPN resolvent wi11 be given.The enterprise obtains based on MPLS the agreement VPN solution for at present the most superior solution; Then gave through the fundamental research solution has realized the process based on MPLS the agreement VPN, has solved three problems, on the one hand was between the PE two spots moves the BGP agreement to realize the VPN routing information only to be able by this VPN equipment study but could not the P equipment and other VPN equipment study question, on the other hand (VPN Routing&Forwarding) solved on the PE equipment through VRF each group of VPN related routing information isolation question, third has solved the user address multiplying and the VPN route strategy question, thus completed based on MPLS agreement VPN realization.Finally it has been used in Mianyang city e-government Network. Through earlier period to project corporate planning and design, including the project analysis situs design, the VLAN plan, the IP address plan, the route design, the VPN plan, the MBGP design and so on a series of designs, forms Mianyang E-government network's software and hardware plan, and defers to the design and the plan preliminary construction completes the partial networks,by testing and analyzing the network parameter,dormenent development and realiability of the resolvent.