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Configuring ospf areas, Prerequisites – H3C Technologies H3C S7500E Series Switches User Manual

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To do…

Use the command…

Remarks

Enable an OSPF process and

enter its view

ospf [ process-id |

router-id router-id |

vpn-instance

instance-name ] *

Required

Not enabled by default.

Configure a description for the

OSPF process

description description

Optional

Not configured by default.

Configure an OSPF area and

enter OSPF area view

area area-id

Required

Not configured by default.

Configure a description for the

area

description description

Optional

Not configured by default.

Specify a network to enable

OSPF on the interface attached

to the network

network ip-address

wildcard-mask

Required

Not configured by default.

z

A network segment can only belong to one area.

z

It is recommended to configure a description for each OSPF process to help identify purposes of

processes and for ease of management and memorization.

z

It is recommended to configure a description for each area to help identify purposes of areas and

for ease of management and memorization.

Configuring OSPF Areas

After splitting an OSPF AS into multiple areas, you can further configure some areas as stub areas or

NSSA areas as needed.

If connectivity between the backbone and a non-backbone area or within the backbone itself cannot be

achieved, you can configure virtual links to solve it.

Prerequisites

Before configuring an OSPF area, you have configured:

z

IP addresses for interfaces, making neighboring nodes accessible with each other at the network

layer.

z

OSPF basic functions.