area-rangeSyntax area-range network/mask-length metric> ;Hierarchy Level [edit logical-systems logical-system-name protocols (ospf | ospf3) area area-id],[edit logical-systems logical-system-name protocols (ospf | ospf3) area area-id nssa],[edit logical-systems logical-system-name realm (ipv4-unicast | ipv4-multicast |ipv6-multicast) area area-id],[edit logical-systems logical-system-name routing-instances routing-instance-name protocols(ospf | ospf3) area area-id],[edit logical-systems logical-system-name routing-instances routing-instance-name protocols(ospf | ospf3) area area-id nssa],[edit logical-systems logical-system-name routing-instances routing-instance-name realm(ipv4-unicast | ipv4-multicast | ipv6-multicast) area area-id],[edit protocols (ospf | ospf3) area area-id],[edit protocols (ospf | ospf3) area area-id nssa],[edit protocols ospf3 realm (ipv4-unicast | ipv4-multicast | ipv6-multicast) area area-id],[edit routing-instances routing-instance-name protocols (ospf | ospf3) area area-id],[edit routing-instances routing-instance-name protocols (ospf | ospf3) area area-id nssa],[edit routing-instances routing-instance-name realm (ipv4-unicast | ipv4-multicast |ipv6-multicast) area area-id]Release Information Statement introduced before Junos OS Release 10.2 for J-EX Series switches.Description (Area border routers only) For an area, summarize a range of IP addresses when sendingsummary link advertisements (within an area). To summarize multiple ranges, includemultiple area-range statements.For a not-so-stubby area (NSSA), summarize a range of IP addresses when sendingNSSA link-state advertisements. The specified prefixes are used to aggregate externalroutes learned within the area when the routes are advertised to other areas. To specifymultiple prefixes, include multiple area-range statements. All external routes learnedwithin the area that do not fall into one of the prefixes are advertised individually to otherareas.Default By default, area border routers do not summarize routes being sent from one area toother areas, but rather send all routes explicitly.Options exact—(Optional) Summarization of a route is advertised only when an exact match ismade with the configured summary range.mask-length—Number of significant bits in the network mask.network—IP address. You can specify one or more IP addresses.override-metric metric—(Optional) Override the metric for the IP address range andconfigure a specific metric value.restrict—(Optional) Do not advertise the configured summary. This hides all routes thatare contained within the summary, effectively creating a route filter.Range: 1 through 16,777,2151475Chapter 73: Configuration Statements for Layer 3 Protocols