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CLI-based Configuration Guide - IP Unicast Routing

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R009

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Creating an OSPF Area

Creating an OSPF Area

Context

More and more devices are deployed with the increasing expansion of the network scale. As a result, each device has to maintain a large LSDB, which becomes a heavy burden. OSPF solves this problem by dividing an AS into areas. An area is regarded as a logical device group. Each group is identified by an area ID. The borders of an area are devices, rather than links. A network segment (or a link) belongs to only one area; that is, each OSPF interface must belong to an area.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run ospf [ process-id | router-id router-id | vpn-instance vpn-instance-name ] *

    The OSPF process is enabled, and the OSPF view is displayed.

  3. Run area area-id

    The OSPF area view is displayed.

    Areas are not equally important. The area with an area ID 0 is called the backbone area. The backbone area is responsible for forwarding inter-area routing information. In addition, routing information between non-backbone areas must be forwarded through the backbone area.

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Updated: 2019-05-17

Document ID: EDOC1000174069

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