L3VPN Standards

Layer 3 Virtual Private Network
RFC 2283
Multiprotocol Extensions for BGP-4
RFC 2685
Virtual Private Networks Identifier
RFC 2858
Multiprotocol Extensions for BGP-4
RFC 4364
BGP/MPLS IP Virtual Private Networks (VPNs)
RFC 4379
Detecting Multi-Protocol Label Switched (MPLS) Data Plane Failures
RFC 4576
Using a Link State Advertisement (LSA) Options Bit to Prevent Looping in BGP/MPLS IP Virtual Private Networks (VPNs)
RFC 4577
OSPF as the Provider/Customer Edge Protocol for BGP/MPLS IP Virtual Private Networks (VPNs)
RFC 4659
GP-MPLS IP Virtual Private Network (VPN) Extension for IPv6 VPN
RFC 4684
Constrained Route Distribution for Border Gateway Protocol/MultiProtocol Label Switching (BGP/MPLS) Internet Protocol (IP) Virtual Private Networks (VPNs)

Informational RFC

Layer 3 Virtual Private Network
RFC 1918
Address Allocation for Private Internets
RFC 2917
A Core MPLS IP VPN Architecture