By dividing an AS into different areas, specifying OSPFv3 interfaces, and specifying areas to which these interfaces belong, OSPFv3 can discover and calculate routes in an AS.
You must configure the devices in the same area based on the area. Otherwise, the neighbor devices cannot exchange information with each other. The congestion of routing information or routing loop is therefore caused.
ospfv3 [ process-id ] [ vpn-instance vpn-instance-name ]
area area-id
The area ID can be a decimal integer or in the IPv4 address format, but it is displayed in the IPv4 address format.
An OSPFv3 area cannot be deleted directly. Only after all the configurations in the area view are removed and the status of the related interfaces in this area become Down, this area is automatically removed.