Layer 3 Services This section provides configuration information for the following topics: BGP Best External in a VPRN Carrier Supporting Carrier IP VPNs Flexible Algorithms for SRv6-based VPRNs Inter-AS VPRN Model B Inter-AS VPRN Model B Using MPLS over UDP Inter-AS VPRN Model C Intra-AS NG-MVPN over BIER Layer 3 VPN: VPRN Type Spoke NG-MVPN Configuration with MPLS NG-MVPN Configuration with PIM NG-MVPN Inter-AS Model B Using Non-Segmented mLDP Tunnels NG-MVPN Inter-AS Model C Using Non-Segmented mLDP Tunnels NG-MVPN Sender-Only, Receiver-Only NG-MVPN Source Redundancy NG-MVPN Wildcard S-PMSI Rosen MVPN Core Diversity Rosen MVPN Inter-AS Option B Selective VPRN uRPF Control on Network Interfaces Spoke Termination for IPv6-6VPE Traffic Leaking from VPRN to GRT Weighted ECMP for VPRN over RSVP-TE or SR-TE LSPs