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MPLS VPN Technology

MPLS VPN Technology. Categorizing VPNs. Outline. Overview What Are the Business Categories for VPNs? What Are Extranet VPNs? What Are the Connectivity Categories for VPNs? What Is the Central Services Extranet? What Is a Managed Network Implementation? Summary. VPN Business Category.

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MPLS VPN Technology

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  1. MPLS VPN Technology Categorizing VPNs

  2. Outline • Overview • What Are the Business Categories for VPNs? • What Are Extranet VPNs? • What Are the Connectivity Categories for VPNs? • What Is the Central Services Extranet? • What Is a Managed Network Implementation? • Summary

  3. VPN Business Category • VPNs can be categorized based on the business needs that they fulfill: • Intranet VPNs connect sites within an organization. • Extranet VPNs connect different organizations in a secure way. • Access VPNs (VPDNs) provides dialup access into a customer network.

  4. Extranet VPNs:Overlay VPN Implementation

  5. Extranet VPNs:Peer-to-Peer VPN Implementation

  6. VPN Connectivity Category • VPNs can also be categorized according to the connectivity required between sites: • Simple VPN: Every site can communicate with every other site. • Overlapping VPNs: Some sites participate in more than one simple VPN. • Central services VPN: All sites can communicate with central servers but not with each other. • Managed network: A dedicated VPN is established to manage CE routers.

  7. Central Services Extranet

  8. Managed NetworkOverlay VPN Implementation

  9. Central Services Extranet:Hybrid (Overlay + Peer-to-Peer) Implementation

  10. Summary • There are three VPN business categories: intranet VPN, extranet VPN, and access VPN. • In an extranet VPN, organizations are linked with dedicated virtual circuits. • There are four VPN connectivity categories: simple VPN, overlapping VPN, central service VPN, and managed network. • A central services extranet enables customers to access common servers for services. • Managed networks allow customer CE devices to be owned and managed by the service provider.

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