# Interface Configuration

Device > Configure > Open Shortest Path First (OSPF) > Open Shortest Path First (OSPF) > Interface Configuration

This dialog box provides the interface configuration information for OSPF on this device.

To view the definition for a particular MIB variable, click the appropriate link from the following list:

- Interface IP Address (ospfIfIpAddress)

- Interface without IP Address (ospfAddressLessIf)

- Interface connected Area ID (ospfIfAreaId)

- Interface Type (ospfIfType)

- Interface Admin. Status (ospfIfAdminStat)

- Priority for DR election (ospfIfRtrPriority)

- Transit Delay for link-state Update (ospfIfTransitDelay)

- LSA Retransmission Interval (ospfIfRetransInterval)

- Hello Packet Transmission Interval (ospfIfHelloInterval)

- Dead Interval for Hello Packets (ospfIfRtrDeadInterval)

- Interval - Poll an inactive NBMA (ospfIfPollInterval)

- Interface State (ospfIfState)

- IP Address of Designated Router (ospfIfDesignatedRouter)

- IP Address of Backup DR (ospfIfBackupDesignatedRouter)

- Authentication Key (ospfIfAuthKey)

The following list specifies buttons in this dialog box, as well as their function:

- Click OK to continue.

- With an entry selected, click Monitor to launch the Interface State Monitoring dialog box.

- Click Cancel to close the dialog box.

- Click Refresh to update the contents of the dialog box.

- Click Print to print the contents of the dialog box.

- Click Help to access online help.

Interface IP Address (ospfIfIpAddress)

IP address of this OSPF interface.

Interface without IP Address (ospfAddressLessIf)

This object eases the instancing of interfaces with and without IP addresses. On interfaces with an IP address, the value of this object is zero. On interfaces without an IP address, the value of this object is equal to the corresponding value of ifIndex.

Interface connected Area ID (ospfIfAreaId)

32-bit integer that uniquely identifies the area the interface connects to. The area ID for the OSPF backbone is "0.0.0.0".

Interface Type (ospfIfType)

Indicates the OSPF interface type:

- The value "broadcast" is applied to broadcast LANs, such as Ethernet and IEEE 802.5.
- The value "nbma" is applied to X.25, Frame Relay, and similar technologies.
- The value "pointToPoint" is applied to links that are definitively point to point.

Interface Admin. Status (ospfIfAdminStat)

Administrative status for this OSPF interface:

- When the value of this object is set to "enabled", neighbor relationships can be formed on the interface, and the interface is advertised as an internal route to some areas.
- When the value of this object is set to "disabled", it indicates that the interface is external to OSPF.

Priority for DR election (ospfIfRtrPriority)

Indicates the priority of this interface. In multi-access networks, this object is used in the designated router election algorithm. The value "0" indicates that the router is not eligible to become the designated router on this particular network.

Transit Delay for link-state Update (ospfIfTransitDelay)

Estimated number of seconds needed to transmit a link-state update packet over this interface.

LSA Retransmission Interval (ospfIfRetransInterval)

Number of seconds between link-state advertisement retransmissions, for adjacencies belonging to this interface. This value is also used when retransmitting database description and link-state request packets.

Hello Packet Transmission Interval (ospfIfHelloInterval)

Length of time, in seconds, between Hello packet transmissions. This value must be the same for all routers attached to a common network.

Dead Interval for Hello Packets (ospfIfRtrDeadInterval)

Number of seconds that a router's Hello packets are not recognized before neighbor devices declare the router down. The value of this object should be a multiple of the Hello interval, and must be the same for all routers attached to a common network.

Interval - Poll an inactive NBMA (ospfIfPollInterval)

The length of time, in seconds, between Hello packet transmissions to an inactive non-broadcast multi-access neighbor.

Interface State (ospfIfState)

Indicates the OSPF interface state.

IP Address of Designated Router (ospfIfDesignatedRouter)

IP address of the designated router.

IP Address of Backup DR (ospfIfBackupDesignatedRouter)

IP address of the backup designated router.

Authentication Key (ospfIfAuthKey)

Authentication key for this OSPF interface. If the area's authorization type is set to "simplePassword" and the key length is shorter than 8 octets, the agent appends the number of zeros necessary to create an 8 octet string to the end of the key.

When read, this object always returns a zero-length string.