Benefits of Using a Single OSPF Area Network Design

BC

QUESTION NO: 289

OSPF (Open Shortest Path First) is a popular interior gateway protocol (IGP) that is used to route traffic within an autonomous system (AS). When designing an OSPF network, network administrators have the option to use a single area or multiple areas. Here are the two benefits of using a single OSPF area network design:

1. It reduces the types of LSAs that are generated:

When using a single OSPF area, all routers in the network have the same topological database. Therefore, there is no need to generate different types of Link State Advertisements (LSAs) for different areas. This reduces the number of LSAs that need to be generated and transmitted, which helps to reduce the network's overall overhead and can also lead to a more efficient use of network resources.

2. It removes the need for virtual links:

Virtual links are used to connect non-backbone areas together through the backbone area. However, when using a single area design, there is no need for virtual links because all areas are connected to the backbone area. This simplifies the network design and configuration, and also reduces the risk of network instability and routing loops that can occur when virtual links are misconfigured.

Therefore, the correct answers to this question are B and C:

• Using a single OSPF area reduces the types of LSAs that are generated.
• Using a single OSPF area removes the need for virtual links.