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
vlan-name | Specifies a VLAN name. |
area-identifier | Specifies an OSPF area. |
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.
Example
The following command associates the VLAN accounting with an OSPF area:
configure ospf vlan accounting area 0.0.0.6
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.