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

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Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Create a RIP process for a

VPN instance and enter RIP
view.

rip [ process-id ] vpn-instance
vpn-instance-name

Perform this configuration on the
PE. On the CE, create a common

RIP process.

3.

Enable RIP on the interface
attached to the specified

network.

network network-address

By default, RIP is disabled on an
interface.

Configuring OSPF between a PE and a CE

An OSPF process that is bound to a VPN instance does not use the public network router ID configured
in system view. Therefore, you must specify a router ID when starting a process or configure an IP address

for at least one interface of the VPN instance.
An OSPF process belongs to the public network or a single VPN instance. If you create an OSPF process

without binding it to a VPN instance, the process belongs to the public network.
To configure OSPF between a PE and a CE:

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Create an OSPF process for a
VPN instance and enter the

OSPF view.

ospf [ process-id | router-id
router-id | vpn-instance

vpn-instance-name ] *

Perform this configuration on the
PE. On the CE, create a common

OSPF process.

3.

(Optional.) Configure an
OSPF domain ID.

domain-id domain-id [ secondary ]

The default domain ID is 0.
Perform this configuration on the
PE. On the CE, configure common

OSPF.
The domain ID is carried in the
routes of the OSPF process. When

redistributing routes from the OSPF

process, BGP adds the domain ID

as an extended community
attribute into BGP VPN routes.
An OSPF process can be
configured with only one domain

ID. Domain IDs of different OSPF
processes are independent of each

other.
All OSPF processes of a VPN must

be configured with the same
domain ID, while OSPF processes

on PEs in different VPNs can be

configured with domain IDs as
desired.