# OSPF Link State Database

The OSPF Link State Database dialog box gives the link state database information for 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 Link State Database from the Category list.

For CiscoView version 5.2 and above:

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 Link State Database from the left pane.

The following information appears:

LSA Rx - Area ID (ospfLsdbAreaId)

LSA Type (ospfLsdbType)

Link State ID (ospfLsdbLSID)

Originating Router ID (ospfLsdbRouterId)

LSA Sequence No (ospfLsdbSequence)

LSA Age (ospfLsdbAge)

LSA Checksum (ospfLsdbChecksum)

## Related Topics

OSPF Address Range Configuration

OSPF Area Configuration

OSPF General Configuration

OSPF Host Configuration

OSPF Interface Configuration

OSPF Neighbor Configuration

OSPF Stub Area Configuration

OSPF ToS Metrics for Nonvirtual Interface

OSPF Virtual Neighbor Configuration

OSPF Virtual Interface Configuration

### LSA Rx - Area ID (ospfLsdbAreaId)

IP address of the designated router.

### LSA Type (ospfLsdbType)

Type of the link-state advertisement. Each link-state type has a separate advertisement format. LSA type can be:

Value | Description
1 | routerLink
2 | networkLink
3 | summaryLink
4 | asSummaryLink
5 | asExternalLink

### Link State ID (ospfLsdbLSID)

Router ID or IP address that identifies the piece of the routing domain that is being described by the advertisement. This object depends on the LS type.

### Originating Router ID (ospfLsdbRouterId)

32 bit number that uniquely identifies the originating router in the autonomous system.

### LSA Sequence No (ospfLsdbSequence)

Signed 32-bit integer that is used to detect old and duplicate link-state advertisements. The sequence numbers are ordered linearly. The larger the sequence number the more recent the advertisement.

### LSA Age (ospfLsdbAge)

Age of the link state advertisement, in seconds.

### LSA Checksum (ospfLsdbChecksum)

Checksum of the complete contents of the advertisement, except the age field. The age field is excepted so that an advertisement's age can be incremented without updating the checksum. The checksum used is the same that used for ISO connectionless datagrams; it is commonly referred to as the Fletcher checksum.