Configuring Mpls L3Vpn; Mpls L3Vpn Overview; Introduction To Mpls L3Vpn - HP 12500 Series Configuration Manual

Configuring MPLS L3VPN

NOTE:
This chapter covers only introduction to and configuration of MPLS L3VPN. For information about MPLS
basics, see the chapter "Configuring basic MPLS." For information about BGP, see
Configuration Guide

MPLS L3VPN overview

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 is widely used because it provides flexible networking modes, excellent scalability, and
convenient support for MPLS QoS and MPLS TE.
The MPLS L3VPN model consists of the following kinds of devices:
Customer edge (CE) device: A CE resides on a customer network and has one or more interfaces
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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 must it support MPLS.
Provider edge (PE) device: A PE resides on a service provider network and connects one or more
•
CEs to the network. On an MPLS network, all VPN processing occurs on the PEs.
Provider (P) device: A P device is a backbone router on a service provider network. It is not directly
•
connected to any CE. It only must be equipped with basic MPLS forwarding capability.
Figure 47 Network diagram for MPLS L3VPN model
CEs and PEs mark the boundary between the service providers and the customers.
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Layer 3—IP Routing