H3C Technologies H3C SR8800 User Manual
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NOTE:
IBGP can be used between PE and CE devices in only common MPLS L3VPN networking. In Extranet,
inter-AS VPN, carrier’s carrier, nested VPN, and HoVPN networking, you cannot use IBGP between PE
and CE devices.
1.
Configurations a PE
To configure IBGP between PE and CE:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter BGP view.
bgp as-number N/A
3.
Enter BGP VPN instance view. ipv4-family vpn-instance
vpn-instance-name
N/A
4.
Configure the CE as the VPN
IBGP peer.
peer { group-name | ip-address }
as-number as-number
N/A
5.
Configure the system to be the
RR and specify the CE as the
client of the RR.
peer { group-name | ip-address }
reflect-client
Optional.
By default, no RR or RR client is
configured.
6.
Enable route reflection
between clients.
reflect between-clients
Optional.
Enabled by default.
7.
Configure the cluster ID for the
RR.
reflector cluster-id { cluster-id |
ip-address }
Optional.
Router ID of an RR in the cluster by
default.
8.
Configure BGP to filter routes
to be advertised.
filter-policy { acl-number |
ip-prefix ip-prefix-name } export
[ direct | isis process-id | ospf
process-id | rip process-id | static ]
Optional.
By default, BGP does not filter
routes to be advertised.
9.
Configure BGP to filter
received routes.
filter-policy { acl-number |
ip-prefix ip-prefix-name } import
Optional.
By default, BGP does not filter
received routes.
NOTE:
•
By default, a PE does not advertise routes learned from IBGP peer CEs to IBGP peers, including VPNv4
IBGP peers. Only when you configure an IBGP peer CE as a client of the RR, does the PE advertise routes
learned from it to other IBGP peers.
•
You can execute the reflect between-clients command and the reflector cluster-id command in multiple
views, such as BGP-VPN instance view and BGP-VPNv4 subaddress family view. The two commands
take effect for only the RR in the view where they are executed. For RRs in other views, they do not take
effect.
•
Configuring an RR does not change the next hop of a route. To change the next hop of a route, configure
an inbound policy on the receiving side of the route.
2.
Configurations a CE
To configure IBGP between PE and CE: