Configuring inter-as ipv6 vpn, Configuration prerequisites – H3C Technologies H3C SR8800 User Manual
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Step Command
Remarks
13.
Configure BGP updates to the 
peer to not carry private AS 
numbers.
peer ip-address public-as-only
Optional 
By default, a BGP update carries 
private AS numbers.
14.
Apply a routing policy for the 
peer. 
peer ip-address route-policy 
route-policy-name { export | 
import }
Optional 
By default, no routing policy is 
applied for a peer.
15.
Enable VPN target filtering for 
received BGP-VPNv6 
subaddress family routes.
policy vpn-target
Optional 
Enabled by default 
16.
Configure the local PE as the 
route reflector and specify the 
peer as the client.
peer ip-address reflect-client
Optional 
No route reflector or client is 
configured by default. 
17.
Enable route reflection 
between clients. 
reflect between-clients
Optional 
Enabled by default 
18.
Configure a cluster ID for the 
route reflector. 
reflector cluster-id { cluster-id | 
ip-address } 
Optional 
By default, a route reflector uses its 
router ID as the cluster ID. 
19.
Create an RR reflection policy. rr-filter
extended-community-list-number
Optional
NOTE:
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 need to configure inter-AS
IPv6 VPN. 
There are three inter-AS VPN solutions (for more information, see the chapter “Configuring MPLS 
L3VPN”). IPv6 MPLS L3VPN supports only inter-AS VPN option A and option C.
Configuration prerequisites
Before configuring inter-AS IPv6 VPN, complete these tasks:
•
Configuring an IGP for the MPLS backbone in each AS to implement IP connectivity
•
Configuring basic MPLS capabilities for the MPLS backbone of each AS
•
Configuring MPLS LDP for the MPLS backbones so that LDP LSPs can be established
NOTE:
The following sections describe inter-AS IPv6 VPN option A and option C. Select one according to your 
networking scenario.