Configuring inter-AS IPv6 VPN option A

Inter-AS IPv6 VPN option A applies to scenarios where the number of VPNs and that of VPN routes on the PEs are relatively small.

To configure inter-AS IPv6 option A:

• Configure basic IPv6 MPLS L3VPN on each AS.

• Configure VPN instances on both PEs and ASBR-PEs. The VPN instances on PEs allow CEs to access the network, and those on ASBR-PEs are for access of the peer ASBR-PEs.

For more configuration information, see "Configuring MPLS L3VPN."

In the inter-AS IPv6 VPN option A solution, for the same IPv6 VPN, the route targets configured on the PEs must match those configured on the ASBR-PEs in the same AS to make sure VPN routes sent by the PEs (or ASBR-PEs) can be received by the ASBR-PEs (or PEs). Route targets configured on the PEs in different ASs do not have such requirements.