The Global VRF

PE global VRF networking components:

• Loopback interface with IPv4 or IPv6 address
• VLAN interfaces used by the L3 VPN that point towards the public core or PE neighbor routers
• Enable LDP for either IPv4 or IPv6 as the label distribution protocol
• If using L3 tunneling: L3 Tunnel – The L3 Tunnel for a L3 tunnel discussion
• If using Native MPLS tunneling: Enable MPLS encapsulation both in global configuration mode and for each interface used by L3 VPN (see Native MPLS)
• If using L3 tunneling: configure static routes to each remote peer loopback address so it will be preferred as the next-hop of the tunnel
• Configure the IGP such as OSPF, used in the public core
• L3 VPN BGP elements – Multi-protocol Internal BGP for the BGP configuration relating to the L3 VPN