347Then, the ingress PE advertises the VPN-IPv6 routes to the egress PE through MP-BGP.Finally, the egress PE compares the export target attributes of the VPN-IPv6 routes with the import targetattributes that it maintains for the VPN instance and, if they are the same, adds the routes to the routingtable of the VPN instance.The PEs use an IGP to ensure the connectivity between them.Routing information exchange from the egress PE to the remote CEThe exchange of routing information between the egress PE and the remote CE is the same as thatbetween the local CE and the ingress PE.IPv6 MPLS L3VPN network schemes and functionsIPv6 MPLS L3VPN supports the following network schemes and functions:• Basic VPN• Inter-AS VPN option A• Inter-AS VPN option C• Carrier's carrier• Multi-VPN-instance CEIPv6 MPLS L3VPN configuration task listComplete the following tasks to configure IPv6 MPLS L3VPN:Task RemarksConfiguring basic IPv6 MPLS L3VPN By configuring basic IPv6 MPLS L3VPN, you canconstruct simple IPv6 VPN networks over an MPLSbackbone.To deploy special IPv6 MPLS L3VPN networks, such asinter-AS VPN, you must perform some specificconfigurations in addition to the basic IPv6 MPLSL3VPN configuration. See the related sections fordetails.Configuring inter-AS IPv6 VPNConfiguring basic IPv6 MPLS L3VPNBasic IPv6 MPLS L3VPN configuration task listThe key task in IPv6 MPLS L3VPN configuration is to manage the advertisement of IPv6 VPN routes on theMPLS backbone, including PE-CE route exchange and PE-PE route exchange.Complete the following tasks to configure basic IPv6 MPLS L3VPN:Task RemarksConfiguring VPN instancesCreating a VPN instance RequiredAssociating a VPN instance with an interface Required
