Cisco Cisco Firepower Management Center 4000

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Your changes are saved. Note that your changes do not take effect until you apply the device 
configuration; see 

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Control

Series 3

Open Shortest Path First (OSPF) is an adaptive routing protocol that defines routes dynamically by 
obtaining information from other routers and advertising routes to other routers using link state 
advertisements. The router keeps information about the links between it and the destination to make 
routing decisions. OSPF assigns a cost to each routed interface, and considers the best routes to have the 
lowest costs.

See the following sections for more information:

Control

Series 3

An OSPF network may be structured, or subdivided, into routing areas to simplify administration and 
optimize traffic and resource use. Areas are identified by 32-bit numbers, expressed either simply in 
decimal or often in octet-based dot-decimal notation.

By convention, area zero or 0.0.0.0 represents the core or backbone region of an OSPF network. You 
may choose to identify other areas. Often, administrators select the IP address of a main router in an area 
as the area's identification. Each additional area must have a direct or virtual connection to the backbone 
OSPF area. Such connections are maintained by an interconnecting router, known as the area border 
router (ABR). An ABR maintains separate link state databases for each area it serves and maintains 
summarized routes for all areas in the network.

See the following sections for more information on setting up OSPF areas:

Control

Series 3

The following procedure explains how to add an OSPF area and configure general settings.