configure ospf vlan area

Description

Associates a VLAN (router interface) with an OSPF area. By default, all router interfaces are associated with area 0.0.0.0.

Syntax Description

Default

Area 0.0.0.0

Usage Guidelines

Any OSPF network that contains more than one area is required to have an area configured as area 0, also called the backbone. All areas in an autonomous system must be connected to the backbone. When designing networks, you should start with area 0, and then expand into other areas.

The backbone allows summary information to be exchanged between ABRs. Every ABR hears the area summaries from all other ABRs. The ABR then forms a picture of the distance to all networks outside of its area by examining the collected advertisements, and adding in the backbone distance to each advertising router.

When a VLAN is configured to run OSPF, by default you must assign it to an area.

History

This command was first available in ExtremeXOS 10.1.

Platform Availability

This command is available on platforms with Base license, or higher, as described in the Switch Engine 32.2 Feature License Requirements document.