HPE FlexFabric 5950 Series Configuration Manual page 213

Step
2. Configure the CE:
Step
1. Enter system view.
2. Enter BGP instance view.
3. Configure the PE as a BGP
peer.
4. Create the BGP IPv4
unicast family and enter its
view.
5. Enable IPv4 unicast route
exchange with the
specified peer or peer
group.
6. (Optional.) Configure route
redistribution.
C onfiguring IBGP between a PE and a CE
4 7 1 B
Use IBGP between PE and CE only in a basic MPLS L3VPN network. In networks such as
Hub&Spoke, Extranet, inter-AS VPN, carrier's carrier, nested VPN, and HoVPN, you cannot use
IBGP between PE and CE.
1. Configure the PE:
Step
1. Enter system view.
2. Enter BGP instance view.
3. Enter BGP-VPN instance
view.
4. Configure the CE as the
VPN IBGP peer.
Command
Command
system-view
bgp as-number [ instance
instance-name ]
[ multi-session-thread ]
peer { group-name | ip-address
[ mask-length ] } as-number
as-number
address-family ipv4 [ unicast ]
peer { group-name | ip-address
[ mask-length ] } enable
import-route protocol
[ { process-id | all-processes }
[ allow-direct | med med-value
| route-policy
route-policy-name ] * ]
Command
system-view
bgp as-number [ instance
instance-name ]
[ multi-session-thread ]
ip vpn-instance
vpn-instance-name
peer { group-name | ip-address
[ mask-length ] } as-number
as-number
205
Remarks
a CE carries the AS number of
the PE. Therefore, the route
updates that the PE receives
from the CE also include the AS
number of the PE. This causes
the PE to be unable to receive
the route updates. In this case,
you must configure this
command to allow routing loops.
Remarks
N/A
N/A
By default, no BGP peers exist.
By default, the BGP IPv4
unicast family is not created.
By default, BGP does not
exchange IPv4 unicast routes
with any peer.
A CE must redistribute its routes
to the PE so the PE can
advertise them to the peer CE.
Remarks
N/A
N/A
Configuration commands in
BGP-VPN instance view are the
same as those in BGP instance
view. For more information, see
Layer 3—IP Routing
Configuration Guide.
By default, no BGP peers exist.