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Configuring OSPF interfaces

An OSPF interface, or link, is configured on an IP interface. In the Passport 8600, an IP interface can be either a single link (brouter port) or a logical interface configured on a VLAN (multiple ports). The state information associated with the interface is obtained from the underlying lower level protocols and the routing protocol itself.

Before you can configure OSPF protocol on a router interface, you must first enable OSPF globally on the router, and assign an IP address to the interface.When you enable an OSPF interface, you designate it as one of the following types:

• broadcast (active)
• non-broadcast multiaccess (NBMA)
• passive



Note: When an OSPF interface is enabled, you cannot change its interface type. You must first disable the interface. You can then change its type and re-enable it. If it is an NMBA interface, you must also first delete its manually-configured neighbors.

• Viewing OSPF interface information
• Creating an OSPF interface
• Changing an OSPF interface type
• Configuring OSPF NBMA interfaces
• Viewing OSPF neighbor information