R3303-HP HSR6800 Routers MPLS Configuration Guide

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Ste
p
Command Remarks
18. Configure a cluster ID for the
route reflector.
reflector cluster-id { cluster-id |
ip-address }
Optional.
By default, each RR in a cluster uses
its own router ID as the cluster ID.
If more than one RR exists in a
cluster, use this command to
configure the same cluster ID for all
RRs in the cluster to avoid rout
loops.
19. Create an RR reflection policy.
rr-filter
extended-community-number
Optional.
By default, an RR does not filter the
reflected routes.
With an RR reflection policy, only
IBGP routes whose Extended
Communities attribute matches the
specified one are reflected.
By configuring different RR
reflection policies on different RRs,
you can implement load balancing
among the RRs.
For information about IPv6 BGP routing features, see Layer 3—IP Routing Configuration Guide.
Configuring inter-AS IPv6 VPN
If the MPLS backbone that carries the IPv6 VPN routes spans multiple ASs, you must configure inter-AS
IPv6 VPN.
There are three inter-AS VPN solutions (for more information, see "Configuring MPLS L3VPN"). IPv6
MPLS L3VPN supports only inter-AS VPN option A and option C.
Before configuring inter-AS IPv6 VPN, complete these tasks:
• Configuring an IGP for the MPLS backbone in each AS to ensure IP connectivity
• Configuring basic MPLS for the MPLS backbone of each AS
• Configuring MPLS LDP for the MPLS backbones so that LDP LSPs can be established
The following sections describe inter-AS IPv6 VPN option A and option C. Select one according to your
network scenario.
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. It is easy to implement.
To configure inter-AS IPv6 option A:
• Perform basic IPv6 MPLS L3VPN configuration on each AS.
• Configure each ASBR, taking the peer ASBR PE as its CE. In other words, configure VPN instances
on both PEs and ASBR PEs. The VPN instances on PEs allow CEs to access the network, while those
on ASBR PEs are for access of the peer ASBR PEs.