Multi-Protocol label switching(MPLS) that introduced by IETF(Internet Engineering Task Force) is basically used for communication network that attract all service provider network with its brilliant and excellent futures which provide guarantees to traffic and Provide Quality of Services which carries data from source to destination directly through small labels. One of the most highly useful applications of MPLS is VPN or Virtual Private Network that provides layer 3 or network layer VPN for service provider which guarantee carries of traffic privately and securely from one customer to another through service provider network. In order to support several Customers that each customer request for different services like having secure, reliable, private and fast connection MPLS VPN have the concept Virtual Router that it is called VRF(Virtual Routing and Forwarding) table. VRF or Virtual Routing and Forwarding technology that allow a router to have multiple routing tables or multiple VPN at the same time that they are located inside of the same router and now with the help of VRF different customer can use the same Subnet of IP address connected to the same MPLS service provider network. This paper presents deployment of the MPLS using Virtual Routing and Forwarding and using MP-BGP (Multi Protocol Border Gateway Protocol) that I used the combination of IP 4 and IPV6 by using GNS (Graphical Network Simulator)

Deploy Multi Protocol Label Switching (MPLS) Using Virtual Routing and Forwarding (VRF)

When a customer browses internet or sends files (upload/download), the request reaches the DNS (Domain Name System) in the network and does lookup for IP address of the corresponding URL (viz.,www.google.com). Then the request gets transformed to packets and traverses in the internet. The router builds the routing table for the packets based on the source ip and destination ip addresses of the packets. For better security purposes, we need to protect the data by way of encryption i.e. covering up of the packet. Hence we are hiding the information from the hackers. This can be implemented by cisco’s MPLS VPN (Multi Protocol Label Switching – Virtual Private Networks). The VPN network is formed by routes named vrf (virtual routing and forwarding). The vrf identifiers distinguish the routes between different customers landing the ISP (Internet Service Provider) routers. Apart from the existing network, the packets travel in an MPLS enabled ISP network. This results in better security, privacy, reliability, latency and enables fast transmission of data.

A Survey on Multiprotocol Label Switching in Virtual Private Networks

Multi-Protocol Label Switching (MPLS) which was introduced by Internet Engineering Task Force (IETF) is usually used in communication networks which started attracting all the internet service provider(ISP) networks with its brilliant and excellent features that provide quality of services (QOS)and guarantees to traffic which carries data from one network to another network directly through labels. Virtual Private Network (VPN) is one of the highly useful MPLS applications which allow a service provider or a large enterprise network to offer network Layer VPN services that guarantee and carries traffic securely and privately from customer’s one to another through the service provider’s network. To support multiple customers that Customers Request for secure, reliable, private and ultrafast connections over the internet MPLS VPN standards include the concept of a virtual router. This feature called a VRF table. VRF or Virtual routing and Forwarding technology that permit a router to have various routing table or multiple VPN at the same time that they are located in the same router but they are independent and Also the VRF feature in VPN now allows different customers to use same IP addresses connected to the same ISP. A VRF exists inside a single MPLS router and typically routers need at least one VRF for each customer attached to that particular router.

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MPLS VPN using VRF (Virtual Routing and Forwarding )

Now a days in Service Provider’s core network we do not use IP forwarding rather we go for MPLS because it gives more efficient switching of packets. MPLS is the combination of layer-3 routing and layer-2 switching because every network prefix is assigned a particular Label. In this paper I am going to do testing and implement scalability over MPLS L3 VPN. This testing and implementation are to proof the scalability is the one important thing when design MPLS L3 VPN technology. This Topology of MPLS L3 VPN also provides the secure tunnel between two customer sites. By this implementation we show that there is a transparent tunneling over SP network. We are also avoiding the BGP implementation In SP core. So we call it as BGP free core. This implementation also saves the routing table space on provider routers. We have used the concept of Route Reflector (RR) to avoid more BGP sessions and to make it more scalable.

/pdf/architecture-for-mpls-l3-vpn-deployment-in-service-provider-20twir108u.pdf

Ravi Kumar Cv

Papers

Architecture for MPLS L3 VPN Deployment in Service Provider Network