L3VPN
L3VPN, short for Layer 3 Virtual Private Network, is a type of VPN service that provides IP-level connectivity among multiple customer sites over a shared provider network while preserving separate customer routing instances.
In MPLS-based L3VPN, the service provider uses customer edge devices, PE routers with VRFs, and MP-BGP to
The common variant is the MPLS L3VPN defined in RFC 4364 (formerly RFC 2547), often called Virtual
Compared with L2VPNs, L3VPN maintains customer routing control at the edge, reducing the need for the provider
See also: MPLS, VPRN, VRF, MP-BGP, Route Distinguishers, VPN, L2VPN.