Configuring 6Pe - HP 6125XLG Layer 3 - Ip Routing Configuration Manual

Step
7. Enable BGP FRR for the
address family.
8. Reference a routing policy to
specify a backup next hop for
the address family.

Configuring 6PE

IPv6 provider edge (6PE) is a transition technology that uses MPLS to connect sparsely populated IPv6
networks through an existing IPv4 backbone network. It is an efficient solution for ISP IPv4/MPLS
networks to provide IPv6 traffic switching capability.
Figure 62 Network diagram for 6PE
6PE mainly performs the following operations:
6PE assigns a label to IPv6 routing information received from a CE router, and sends the labeled
•
IPv6 routing information to the peer 6PE device through an MP-BGP session. The peer 6PE device
then forwards the IPv6 routing information to the attached customer site.
6PE provides tunnels over the IPv4 backbone so the IPv4 backbone can forward packets for IPv6
•
networks. The tunnels can be GRE tunnels, MPLS LSPs, or MPLS TE tunnels.
• Upon receiving an IPv6 packet, 6PE adds an inner tag (corresponding to the IPv6 packet) and then
an outer tag (corresponding to the public network tunnel) to the IPv6 packet. Devices in the IPv4
backbone network forwards the packet based on the outer tag. When the peer 6PE device receives
the packet, it removes the outer and inner tags and forwards the original IPv6 packet to the attached
customer site.
To implement exchange of IPv6 routing information, you can configure IPv6 static routing, an IPv6 IGP
protocol, or IPv6 BGP between CE and 6PE devices.
For more information about MPLS, MPLS TE, CE, and P (Provider), see MPLS Configuration Guide. For
more information about GRE, see Layer 3
Command
pic
fast-reroute route-policy
route-policy-name
IP Services Configuration Guide.
—
252
Remarks
By default, BGP FRR is disabled.
This method might result in routing
loops. Use it with caution.
By default, no routing policy is
referenced.
The apply fast-reroute
backup-nexthop and apply ipv6
fast-reroute backup-nexthop
commands can take effect in the
referenced routing policy. Other apply
commands do not take effect.