HP 6125XLG R2306-HP 6125XLG Blade Switch MCE Configuration Guide - Page 4

Configuring MCE This chapter describes only Multi-VPN-Instance CE (MCE) configuration. For information about routing protocols, see Layer 3-IP Services Configuration Guide. Overview MPLS L3VPN overview MPLS L3VPN is a PE-based L3VPN technology. It uses BGP to advertise VPN routes and uses MPLS to forward VPN packets over the service provider backbone. MPLS L3VPN provides flexible networking modes, excellent scalability, and convenient support for MPLS QoS and MPLS TE. MPLS L3VPN comprises the following types of devices: • Customer edge (CE) device-A CE resides at the edge of a customer network and has one or more interfaces directly connected to a service provider network. It can be a router, a switch, or a host. It can neither "sense" the presence of any VPN nor does it need to support MPLS. • Provider edge (PE) device-A PE resides at the edge of a service provider network and connects one or more CEs. On an MPLS network, all VPN services are processed on the PEs. • Provider (P) device-A P device is a core device on a service provider network. It is not directly connected to any CE. It has only basic MPLS forwarding capability. Figure 1 Network diagram for MPLS L3VPN VPN 1 Site 1 VPN 2 Site 3 P P CE CE PE PE CE Site 2 VPN 2 P P PE CE Site 4 VPN 1 CEs and PEs mark the boundary between the service provider network and the customers. 1