3com S7906E Instruccion De Instalación
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MPLS L3VPN Configuration
When configuring MPLS L3VPN, go to these sections for information you are interested in:
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The term router in this document refers to a router in a generic sense or a Layer 3 switch.
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This chapter covers only introduction to and configuration of MPLS L3VPN. For information about
MPLS basics, BGP, and VPN, refer to the relevant manuals or volumes.
MPLS L3VPN Overview
This section covers these topics:
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Introduction to MPLS L3VPN
MPLS L3VPN is a kind of PE-based L3VPN technology for service provider VPN solutions. It uses BGP
to advertise VPN routes and uses MPLS to forward VPN packets on service provider backbones.
MPLS L3VPN provides flexible networking modes, excellent scalability, and convenient support for
MPLS QoS and MPLS TE. Hence, it is widely used.
The MPLS L3VPN model consists of three kinds of devices:
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Customer edge device (CE): A CE resides on a customer network and has one or more interfaces
directly connected with service provider networks. It can be a router, a switch, or a host. It neither
can "sense" the existence of any VPN nor needs to support MPLS.