area [ospf3–area-id|backbone][ normal ]


area [ospf3-area-id|backbone][ normal ]


After using router ospf3 to globally enable OSPFv3 and enter the global OSPF3 context, execute this command to assign the routing switch to a backbone or other normal area.



Specifies a normal area to which you are assigning the routing switch. You can assign the routing switch to one or more areas, depending on the area in which you want each configured VLAN or subnet to reside.

You can enter area IDs in either whole number or dotted decimal format. (The routing switch automatically converts whole numbers to the dotted decimal format.)

For example, if you enter an area-ID of 1, it appears in the switch's configuration as, and an area-ID of 256 appears in the switch configuration as Entering an area ID of 0 or automatically joins the routing switch to the backbone area.

The maximum area ID value is (4,294,967,294).


Assigns the routing switch to the backbone area and automatically assigns an area ID of and an area type of normalUsing 0 or with the above ospf3-area-id option achieves the same result.

The backbone area is automatically configured as a "normal" area type.


Applied by default if not specified in an area command. Required to convert an existing NSSA or stub area to a normal area.


The no form of the command removes the routing switch from the specified area.

Default: No areas. Range: 1 - 16 areas (of all types)

Example input

Configuring an OSPFv3 backbone or normal area

To configure a backbone and a normal area with an ID of "1" ( on a routing switch:

Switch(ospf3)# area backbone
Switch(ospf3)# area 1

To convert an existing NSSA or stub area to a normal area, you would include the normal keyword. For example, if area 10 was configured as an NSSA area you wanted to convert to a normal area, you would use the following command:

Switch(ospf3)# area 10 normal