R3303-HP HSR6800 Routers MPLS Configuration Guide

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Routing information exchange from the ingress PE to the egress PE
After learning the IPv6 VPN routes from the CE, the ingress PE adds RDs and route targets for these
standard IPv6 routes to create VPN-IPv6 routes, saves them to the routing table of the VPN instance
created for the CE, and then triggers MPLS to assign VPN labels for them.
Then, 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 target
attributes that it maintains for the VPN instance and, if they are the same, adds the routes to the routing
table 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 CE
The exchange of routing information between the egress PE and the remote CE is the same as that
between the local CE and the ingress PE.
IPv6 MPLS L3VPN network schemes and functions
IPv6 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 CE
IPv6 MPLS L3VPN configuration task list
Task Remarks
Configuring basic IPv6 MPLS L3VPN
By configuring basic IPv6 MPLS L3VPN, you can
construct simple IPv6 VPN networks over an MPLS
backbone.
To deploy special IPv6 MPLS L3VPN networks, such as
inter-AS VPN, you must also perform some specific
configurations in addition to the basic IPv6 MPLS
L3VPN configuration. For more information, see the
related sections.
Configuring inter-AS IPv6 VPN
Configuring routing on an MCE
Configuring basic IPv6 MPLS L3VPN
The key task in IPv6 MPLS L3VPN configuration is to manage the advertisement of IPv6 VPN routes on the
MPLS backbone, including PE-CE route exchange and PE-PE route exchange.
To configure basic IPv6 MPLS L3VPN: