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27-4
Cisco ASA 5500 Series Configuration Guide using ASDM
Chapter 27 Configuring OSPF
Customizing OSPF
If you click Advanced, you can configure the Router ID, Adjacency Changes, Administrative Route
Distances, Timers, and Default Information Originate settings for each OSPF process. See the
“Configuring Route Calculation Timers” section on page 27-13 for more information.
• The Area/Networks tab allows you to display the areas and the networks that they include for each
OSPF process on the ASA. From this tab you can display the area ID, the area type, and the type of
authentication set for the area. To add or edit the OSPF area or network, see the “Configuring OSPF
Area Parameters” section on page 27-11 for more information.
• The Route Summarization tab allows you to configure an ABR. In OSPF, an ABR will advertise
networks in one area into another area. If the network numbers in an area are assigned in a way so
that they are contiguous, you can configure the ABR to advertise a summary route that includes all
the individual networks within the area that fall into the specified range. See the “Configuring Route
Summarization Between OSPF Areas” section on page 27-8 for more information.
Customizing OSPF
This section explains how to customize the OSPF process and includes the following topics:
• Redistributing Routes Into OSPF, page 27-4
• Configuring Route Summarization When Redistributing Routes Into OSPF, page 27-6
• Configuring Route Summarization Between OSPF Areas, page 27-8
• Configuring OSPF Interface Parameters, page 27-8
• Configuring OSPF Area Parameters, page 27-11
• Configuring OSPF NSSA, page 27-12
• Defining Static OSPF Neighbors, page 27-13
• Configuring Route Calculation Timers, page 27-13
• Logging Neighbors Going Up or Down, page 27-14
• Configuring Filtering in OSPF, page 27-14
• Configuring a Virtual Link in OSPF, page 27-15
Redistributing Routes Into OSPF
The ASA can control the redistribution of routes between OSPF routing processes.
Note If you want to redistribute a route by defining which of the routes from the specified routing protocol are
allowed to be redistributed into the target routing process, you must first generate a default route. See
the “Configuring Static and Default Routes” section on page 25-2, and then define a route map according
to the “Defining a Route Map” section on page 26-4.
To redistribute static, connected, RIP, or OSPF routes into an OSPF process, perform the following steps:
Step 1 In the main ASDM window, choose Configuration > Device Setup > Routing > OSPF >
Redistribution.