R0106-HP MSR Router Series MPLS Configuration Guide(V7)

198
Ste
p
Command Remarks
16. Configure BGP updates
advertised to an EBGP peer or
peer group to carry only public
AS numbers.
peer { group-name | ip-address }
public-as-only
Optional.
By default, BGP route updates
advertised to an EBGP peer or peer
group can carry both public and
private AS numbers.
17. Configure the router as a route
reflector and specify a peer or
peer group as its client.
peer { group-name | ip-address }
reflect-client
By default, no RR is configured.
18. Specify the maximum number
of routes BGP can receive from
a peer or peer group.
peer { group-name | ip-address }
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.
19. Apply a routing policy to a
peer or peer group.
peer { group-name | ip-address }
route-policy route-policy-name
{ export | import }
By default, no routing policy is
applied to a peer or peer group.
20. Enable route target-based
filtering of received VPNv4
routes.
policy vpn-target By default, this feature is enabled.
21. Enable route reflection
between clients.
reflect between-clients
By default, route reflection
between clients is enabled on the
RR.
22. Configure a cluster ID for the
route reflector.
reflector cluster-id { cluster-id |
ip-address }
By default, the RR uses its own
router ID as the cluster ID.
23. Configure filtering of reflected
routes.
rr-filter
extended-community-number
By default, the RR does not filter
reflected routes.
24. Configure the SoO attribute for
a BGP peer or peer group.
peer { group-name | ip-address }
soo site-of-origin
By default, the SoO attribute is not
configured.
Configuring inter-AS VPN
If the MPLS backbone spans multiple ASs, you must configure inter-AS VPN.
Configuring inter-AS option A
Inter-AS option A applies to scenarios with a few VPNs.
To configure inter-AS option A, create VPN instances on PEs and ASBRs. The VPN instances on PEs are
used to allow CEs to access the network, The VPN instances on ASBRs are used to access the peer ASBRs.
An ASBR considers the peer ASBR as a CE.
The route targets configured on the PEs must match those configured on the ASBRs in the same AS to
make sure VPN routes sent by the PEs (or ASBRs) can be received by the ASBRs (or PEs). Route targets
configured on the PEs in different ASs do not have such requirements.
For more information, see "Configuring basic MPLS L3VPN."