what's the difference between mpls and vpn?

Answer 1

VPNs are attractive because they:
1) Reduce the cost of connecting branch offices, telecommuters, and mobile users to a corporate intranet, which operate over the public infrastructure of the Internet
2) Are more cost-effective than private WANs constructed with leased lines
However, conventional VPNs do not scale well. They are based on creating and maintaining a full mesh of tunnels or permanent virtual circuits among all sites belonging to a particular VPN, using:
• IPSec
• Layer 2 tunneling protocol (L2TP)
• Layer 2 forwarding (L2F) protocol
• generic routing encapsulation (GRE)
•Frame Relay
•ATM protocols
The overhead required to provision and manage these connection-based schemes cannot be supported in a provider network that must support hundreds or thousands of VPNs, each with tens or hundreds or thousands of sites and thousands or tens of thousands of routes.

MPLS VPNs, which are created in Layer 3, are connectionless, and therefore substantially more scalable and easier to build and manage than conventional VPNs. In addition, you can add value-added services, such as application and data hosting, network commerce, and telephony services to a particular MPLS VPN because the service provider's backbone recognizes each MPLS VPN as a separate, connectionless IP network.
MPLS VPNs offer:
• A platform for rapid deployment of additional value-added IP services, including intranets, extranets, voice, multimedia, and network commerce
• Privacy and security equal to that provided by Layer-2 VPNs by limiting the distribution of a VPN's routes to only those routers that are members of the VPN
• Seamless integration with customer intranets
• Increased scalability over current VPN implementations, with thousands of sites per VPN and hundreds of thousands of VPNs per service provider
• IP Class of Service (CoS), with support for multiple classes of service and priorities within VPNs, as well as between VPNs
• Management of VPN membership and provisioning of new VPNs for rapid deployment
• Scalable any-to-any connectivity for extended intranets and extranets that encompass multiple businesses.

Answer 2

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Answer 3

Difference Between Mpls And Vpn

Answer 4

MPLS-->Multiprotocol Label Switching, an IETF initiative that integrates Layer 2 information about network links (bandwidth, latency, utilization) into Layer 3 (IP) within a particular autonomous system--or ISP--in order to simplify and improve IP-packet exchange. MPLS gives network operators a great deal of flexibility to divert and route traffic around link failures, congestion, and bottlenecks. Lease Line-->A permanent telephone connection between two points set up by a telecommunications common carrier. Typically, leased lines are used by businesses to connect geographically distant offices. Unlike normal dial-up connections, a leased line is always active. The fee for the connection is a fixed monthly rate. The primary factors affecting the monthly fee are distance between end points and the speed of the circuit. Because the connection doesn't carry anybody else's communications, the carrier can assure a given level of quality. VPN-->virtual private network, a network that is constructed by using public wires to connect nodes. For example, there are a number of systems that enable you to create networks using the Internet as the medium for transporting data. These systems use encryption and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.

Answer 5

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