Configuring Mpls L3Vpn; Overview; Basic Mpls L3Vpn Architecture; Mpls L3Vpn Concepts - HP 10500 Series Configuration Manual

Configuring MPLS L3VPN

This chapter describes MPLS L3VPN configuration.

Overview

MPLS L3VPN is a L3VPN technology. It uses BGP to advertise VPN routes and uses MPLS to forward VPN
packets over a service provider backbone.
MPLS L3VPN provides flexible networking modes, excellent scalability, and convenient support for MPLS
QoS and MPLS TE.

Basic MPLS L3VPN architecture

Figure 26 Basic MPLS L3VPN architecture
VPN 1
Site 1
CE
CE
Site 2
VPN 2
A basic MPLS L3VPN architecture has the following types of devices:
• Customer edge device—A CE device resides on a customer network and has one or more interfaces
directly connected to a service provider network. It does not support VPN or MPLS.
Provider edge device—A PE device resides at the edge of a service provider network and connects
•
to one or more CEs. All MPLS VPN services are processed on PEs.
Provider device—A P device is a core device on a service provider network. It is not directly
•
connected to any CE. A P device has only basic MPLS forwarding capability and does not handle
VPN routing information.

MPLS L3VPN concepts

Site
A site has the following features:
P
PE
P
P
PE
P
PE
87
VPN 2
Site 3
CE
CE
Site 4
VPN 1