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Configuring ibgp between a pe and a ce – H3C Technologies H3C S12500-X Series Switches User Manual

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Step Command

Remarks

3.

Enter BGP-VPN instance
view.

ip vpn-instance
vpn-instance-name

N/A

4.

Configure the CE as the

VPN EBGP peer.

peer { group-name |
ipv6-address } as-number
as-number

By default, no BGP peer is
configured.

5.

Create and enter BGP-VPN
IPv6 unicast address family

view.

address-family ipv6 [ unicast ]

Configuration commands in

BGP-VPN IPv6 unicast address
family view are the same as those in

BGP IPv6 unicast address family

view. For details, see Layer 3—IP
Routing Configuration Guide.

6.

Enable IPv6 unicast route

exchange with the specified
peer or peer group.

peer { group-name |
ip-address
} enable

By default, BGP does not exchange
IPv6 unicast routes with any peer.

7.

Redistribute the routes of the

local CE.

import-route protocol
[ process-id [ med med-value |

route-policy

route-policy-name ] * ]

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.

8.

(Optional.) Configure

filtering of advertised routes.

filter-policy { acl6-number |
prefix-list ipv6-prefix-name }
export [ protocol process-id ]

By default, BGP does not filter
advertised routes.

9.

(Optional.) Configure

filtering of received routes.

filter-policy { acl6-number |
prefix-list ipv6-prefix-name }

import

By default, the PE does not filter
received routes.

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 } as-number
as-number

By default, no BGP peer is
configured.

4.

Create and enter BGP IPv6

unicast address family view. address-family ipv6 [ unicast ]

N/A

5.

Enable IPv6 unicast route

exchange with the specified
peer or peer group.

peer { group-name | ip-address }
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: