H3C Technologies H3C S6800 Series Switches - Manual (Page 299)

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Step Command Remarks
9. Configure BGP updates sent
to the peer to carry only
public AS numbers.
peer { group-name | ip-address
[ mask-length ] } public-as-only
By default, a BGP update carries
both public and private AS
numbers.
10. Apply a routing policy to
routes advertised to or
received from the peer or peer
group.
peer { group-name | ip-address
[ mask-length ] } route-policy
route-policy-name { export |
import }
By default, no routing policy is
applied for a peer.
11. Enable route target filtering
for received BGP VPNv6
routes.
policy vpn-target
By default, route target filtering is
enabled.
12. Configure the local PE as the
route reflector and specify the
peer as the client.
peer { group-name | ip-address
[ mask-length ] } reflect-client By default, no route reflector or
client is configured.
13. Specify the maximum number
of routes BGP can receive
from a peer or peer group.
peer { group-name | ip-address
[ mask-length ] } route-limit
prefix-number [ { alert-only |
discard | reconnect
reconnect-time } |
percentage-value ] *
By default, the number of routes
that BGP can receive from a peer
or peer group is not limited.
14. Enable route reflection
between clients.
reflect between-clients
By default, route reflection
between clients is enabled.
15. Configure a cluster ID for the
route reflector.
reflector cluster-id { cluster-id |
ip-address }
By default, an RR 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 routing
loops.
16. Configure filtering of reflected
routes. rr-filter
extended-community-number
By default, an RR does not filter
reflected routes.
Only IBGP routes whose extended
community attribute matches the
specified community list are
reflected.
By configuring different filtering
policies on RRs, you can implement
load balancing among the RRs.
Configuring inter-AS IPv6 VPN
If the MPLS backbone 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:
• Configure an IGP for the MPLS backbone in each AS to ensure IP connectivity.
• Configure basic MPLS for the MPLS backbone of each AS.