"Dynamic Multipoint IPsec VPNs (Using Multipoint GRE/NHRP to Scale IPsec VPNs)"
"Dynamic Layer-3 VPNs (RFC 2547) Support Using Multipoint GRE (mGRE) Tunnels"
"OSPF Support for Unlimited Software VRFs per Provider Edge (PE) Router"
"GRE Tunnel with VRF Configuration Example"
"Cisco Express Forwarding Overview"
"OSPF Design Guide"
"Scaling Inter-Domain RoutingA View Forward" (Geoff Huston, Telstra) Inter-autonomous system MPLS VPN Configuration with VPNv4 eBGP Sessions Between ASBRs"
"Inter-Autonomous Systems for MPLS VPNs"
"MPLS VPN Carrier Supporting Carrier"
"Any Transport over MPLS"
"MPLS VPN Carrier Supporting Carrier IPv4BGP Label Distribution"
"MPLS VPN Inter-AS IPv4 BGP Label Distribution"