# Configuring OSPF interfaces

Use the following procedure to configure OSPF interfaces.

## Prerequisites

- Install the Advanced License.

- Enable IP routing globally on the switch.

- Assign an IP address to the VLAN that you want to enable with OSPF.

  Routing is automatically enabled on the VLAN when you assign an IP address to it.

## Procedure steps

1. From the navigation tree, double-click IP Routing.

2. In the IP Routing tree, double-click OSPF.

3. In the work area, click the Interfaces tab.

4. In the table, double-click the cell under the column heading for the parameter you want to change.

5. Select a parameter or value from the list.

6. Repeat the previous two steps until you have amended all of the parameters you want to change.

7. In the toolbar, click Apply.

## Variable definitions

The following table describes the fields of the Interfaces tab.

Field | Description
--- | ---
IpAddress | Specifies the IP address of the OSPF interface.
AreaId | Specifies the unique ID of the area to which the interface connects. Area ID 0.0.0.0 indicates the OSPF backbone.
AdminStat | Specifies the administrative status of the OSPF interface.
State | Specifies the DR state of the OSPF interface: up–DR, BDR, OtherDR, down–down, or waiting.
RtrPriority | In multi-access networks, specifies the priority of the interface in the designated router election algorithm. The interface with the highest priority number is the designated router. The interface with the second-highest priority becomes the backup designated router. The value 0 signifies that the router is not eligible to become the designated router on this network. This field is an integer value between 0 and 255. In the event of a tie in the priority value, routers use their router ID as a tie breaker. The default value is 1.
DesignatedRouter | Specifies the IP address of the Designated Router.
BackupDesignatedRouter | Specifies the IP address of the Backup Designated Router.
Type | Specifies the OSPF interface type. The options available are broadcast or passive.
AuthType | Specifies the interface authentication type. The options available are: none, simplePassword, or md5.
AuthKey | Specifies the interface authentication key. This key is used when AuthType is simplePassword.
PrimaryMd5Key | Specifies the MD5 primary key, if it exists. Otherwise this field displays 0. This key is used when AuthType is md5.
TransitDelay | Specifies the estimated number of seconds it takes to transmit a link state update packet over this interface. This field is an integer value between 0 and 3600.
RetransInterval | Specifies the number of seconds between link state advertisement retransmissions for adjacencies that belong to this interface. This value is also used when retransmitting database description and link state request packets. This field is an integer value between 0 and 3600.
HelloInterval | Specifies the interval in seconds between the hello packets sent by the router on this interface. This value must be the same for all routers that attach to a common network. This field is an integer value between 1 and 65535.
RtrDeadInterval | Specifies the number of seconds that a neighbor waits for a hello packet from this interface before the router neighbors declare it down. This value must be some multiple of the hello interval, and must be the same for all routers that attach to the common network. This field is an integer value between 0 and 2147483647.
PollInterval | Specifies the poll interval.
AdvertiseWhenDown | Specifies whether this interface sends advertisements even when it is non-operational.
MtuIgnore | Specifies whether the MTU value is ignored on this interface.
Events | Specifies the number of times this OSPF interface has changed its state or an error has occurred.