Configuring Ipv6 Mpls L3Vpn; Overview; Ipv6 Mpls L3Vpn Packet Forwarding - HPE FlexFabric 5950 Series Configuration Manual

C onfiguring IPv6 MPLS L3VPN
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Overview

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IPv6 MPLS L3VPN uses BGP to advertise IPv6 VPN routes and uses MPLS to forward IPv6 VPN
packets on the service provider backbone.
F igure 81 shows a typical IPv6 MPLS L3VPN model. The service provider backbone in the IPv6
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MPLS L3VPN model is an IPv4 network. IPv6 runs inside the VPNs and between CE and PE.
Therefore, PEs must support both IPv4 and IPv6. The PE-CE interfaces of a PE run IPv6, and the
PE-P interface of a PE runs IPv4.
Figure 81 Network diagram for the IPv6 MPLS L3VPN model
VPN 1
IPv6 Site 1
CE
CE
IPv6 Site 2
VPN 2
I Pv6 MPLS L3VPN packet forwarding
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Figure 82 IPv6 MPLS L3VPN packet forwarding diagram
Site 1
2001:1::1/96
2001:2::1
As shown in
1. The PC at Site 1 sends an IPv6 packet destined for 2001:2::1, the PC at Site 2. CE 1 transmits
the packet to PE 1.
IPv4 network
P
PE
P
CE 1
PE 1
Layer1
Layer2
2001:2::1
F igure 82, the IPv6 MPLS L3VPN packet forwarding procedure is as follows:
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P
P
PE
P P
PE 2
Layer2
2001:2::1
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VPN 2
IPv6 Site 3
CE
PE
CE
IPv6 Site 4
VPN 1
CE 2 Site 2
2001:2::1/96
2001:2::1