engineer_baz Lv1Posted 26 Sep 2023 10:38
  
There are some key reasons of multiple areas in OSPF network:

Scalability: OSPF networks with large numbers of routers can become difficult to scale and manage. Dividing the network into multiple areas can help to reduce the complexity of the network and make it easier to manage.

Performance: Routing updates in OSPF networks can be bandwidth-intensive. By dividing the network into areas, routers only need to exchange routing information with other routers in the same area. This can help to reduce the amount of bandwidth used for routing updates and improve the overall performance of the network.

Security: Dividing the network into areas can help to improve security by isolating different parts of the network from each other. This can make it more difficult for attackers to gain access to the entire network.

Reliability: If a problem occurs in one area of an OSPF network, it is less likely to affect other areas. This can help to improve the overall reliability of the network.

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