# Configuring a CLIP interface for OSPF

Use this procedure to configure a CLIP interface to run OSPF.

Important

OSPF runs only in passive mode on a CLIP interface.

## Prerequisites

- Enable IP routing globally.

## Procedure steps

1. From the navigation pane, double-click IP.

2. In the IP tree, click IP.

3. In the IP work area, click the Circuitless IP tab.

4. In the Circuitless IP work area, click the IfIndex of a CLIP.

5. On the toolbar, click OSPF.

6. Configure OSPF for the CLIP interface.

7. On the toolbar, click Apply.

8. On the toolbar, you can click Refresh to verify the OSPF configuration for the CLIP interface.

## Variable definitions

Variable | Value
--- | ---
Enable | Enables (selected) or disables (cleared) OSPF for the CLIP interface.
IfAreaId | Assigns the CLIP to a specific area.