HP FlexNetwork 10500 Series Configuration Manual page 287

Step
3. Enter BGP-VPN instance
view.
4. Configure the CE as the
VPN EBGP peer.
5. Create the BGP-VPN IPv6
unicast address family and
enter its view.
6. Enable IPv6 unicast route
exchange with the
specified peer or peer
group.
7. Redistribute the routes of
the local CE.
8. (Optional.) Allow the local
AS number to appear in the
AS_PATH attribute of a
received route, and set the
maximum number of
repetitions.
2. Configure the CE:
Step
1. Enter system view.
2. Enter BGP instance view.
3. Configure the PE as an
EBGP peer.
4. Create the BGP IPv6
unicast address family and
enter its view.
Command
ip vpn-instance
vpn-instance-name
peer { group-name |
ipv6-address [ prefix-length ] }
as-number as-number
address-family ipv6 [ unicast ]
peer { group-name | ip-address
[ prefix-length ] } enable
import-route protocol
[ { process-id | all-processes }
[ allow-direct | med med-value
| route-policy
route-policy-name ] * ]
peer { group-name |
ipv6-address [ prefix-length ] }
allow-as-loop [ number ]
Command
system-view
bgp as-number [ instance
instance-name ]
peer { group-name |
ipv6-address [ prefix-length ] }
as-number as-number
address-family ipv6 [ unicast ]
278
Remarks
N/A
By default, no BGP peers exist.
By default, the BGP-VPN IPv6
unicast address family is not
created.
Configuration commands in
BGP-VPN IPv6 unicast address
family view are the same as
those in BGP IPv6 unicast
address family view. For more
information, see Layer 3—IP
Routing Configuration Guide.
By default, BGP does not
exchange IPv6 unicast routes
with any peer.
A PE must redistribute the
routes of the local CE into its
VPN routing table so that it can
advertise them to the peer PE.
By default, BGP discards
incoming route updates that
contain the local AS number.
BGP detects routing loops by
examining AS numbers. In a
hub-spoke network where
EBGP is running between a PE
and a CE, the routing
information the PE advertises to
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 IPv6
unicast address family is not
created.