# OSPF Area Configuration

The Area Configuration dialog box displays the area configuration details of OSPF.

## Procedure

For CiscoView versions earlier than 5.2:

1. Right-click the device. Then select Configure, or double-click the device.

2. Select Protocols from the Category list.

3. Select OSPF from the SelectProtocol list. Then click the Details button. The OSPF Configuration dialog box appears.

4. Select Area Configuration from the Category list.

For CiscoView version 5.2 and later:

1. Right-click the device, then select Configure, or double-click the device.

2. Select Protocols from the Category list.

3. Select OSPF from the SelectProtocol list. Then click the Details button. The OSPF Configuration dialog box appears.

   Note: The left frame in the dialog box displays the categories and the right frame displays the category details or a table. If a table is displayed, the variable on which the table is indexed and the key values of the index are listed below the category. Double-click the category to view the table and double-click a key value to view details of a particular row in the table.

   Multiple indexes for a table, if any, are listed below the category in a nested manner. Select a key value to view the rows of the table about that value. Select a key value of the lowest indexing variable to view the details of that particular row.

4. Select Area Configuration from the left pane.

The following information appears:

Area ID (ospfAreaId)

Authentication Type (ospfAuthType)

Import AS-external-LSA Support (ospfImportASExtern)

Area LSA Checksum Sum (ospfAreaLSACksumSum)

## Related Topics

OSPF Address Range Configuration

OSPF General Configuration

OSPF Host Configuration

OSPF Interface Configuration

OSPF Link State Database

OSPF Neighbor Configuration

OSPF Stub Area Configuration

OSPF ToS Metrics for Nonvirtual Interface

OSPF Virtual Neighbor Configuration

OSPF Virtual Interface Configuration

### Area ID (ospfAreaId)

32-bit integer that uniquely identifies an area. Area ID 0.0.0.0 is used for the OSPF backbone.

### Authentication Type (ospfAuthType)

Authentication type specified for an area. Additional authentication types may be assigned locally on a per area basis. Authentication type can be:

Value | Description
0 | none
1 | simplePassword
>1 | reserved for specification by IANA

### Import AS-external-LSA Support (ospfImportASExtern)

Area support for importing AS external link- state advertisements.

### Area LSA Checksum Sum (ospfAreaLSACksumSum)

32-bit unsigned sum of the link-state advertisements LS checksums. The advertisement LS checksums are taken from the area link-state database. The sum excludes external (LS type 5) link-state advertisements. The sum can be used to determine if there has been a change in a router's link state database, and to compare the link-state database of two routers.