area range — router, OSPF
address maskno area
OSPF route summarization
This command tells the OSPF routing process to summarize selected routes for an area. A single route to the given address is generated, instead of separate routes for the individual networks.
The area to be summarized.
The IP address of the network to summarize.
The mask for the IP address, showing which routes to include in the summary.
The following OSPF configuration summarizes all routes for area 2 into a single route for network 10.0.0.0/8:
router ospf 99 network 10.0.0.0 0.255.255.255 area 2 area 2 range 10.0.0.0 255.0.0.0