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Configuring ibgp between a pe and a ce – H3C Technologies H3C S6800 Series Switches User Manual

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2.

Configure the CE:

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enter BGP view.

bgp as-number N/A

3.

Configure the PE as an
EBGP peer.

peer { group-name |
ipv6-address [ prefix-length ] }

as-number as-number

By default, no BGP peer is
configured.

4.

Create the BGP IPv6 unicast
address family and enter its

view.

address-family ipv6 [ unicast ]

By default, the BGP IPv6 unicast
address family is not created.

5.

Enable IPv6 unicast route

exchange with the specified
peer or peer group.

peer { group-name |
ipv6-address
[ prefix-length ] }

enable

By default, BGP does not
exchange IPv6 unicast routes

with any peer.

6.

(Optional.) Configure route
redistribution.

import-route protocol
[ process-id [ med med-value |
route-policy route-policy-name ]

* ]

A CE must advertise its VPN
routes to the connected PE so that
the PE can advertise them to the

peer CE.

Configuring IBGP between a PE and a CE

Use IBGP between PE and CE only in a basic IPv6 MPLS L3VPN network. In networks such as inter-AS

VPN and carrier's carrier, you cannot configure IBGP between PE and CE.

1.

Configure the PE:

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.

ip vpn-instance
vpn-instance-name

Configuration commands in
BGP-VPN instance view are the

same as those in BGP view. For
details, see Layer 3—IP Routing

Configuration Guide.

4.

Configure the CE as the
VPN IBGP peer.

peer { group-name |
ipv6-address
[ prefix-length ] }

as-number as-number

By default, no BGP peer is
created.

5.

Create the BGP-VPN IPv6
unicast family and enter its

view.

address-family ipv6 [ unicast ]

By default, the BGP-VPN IPv6
unicast family is not created.

6.

Enable IPv6 unicast route

exchange with the specified
peer.

peer { group-name |
ipv6-address
[ prefix-length ] }

enable

By default, BGP does not
exchange IPv6 unicast routes

with any peer.