Dell PowerEdge M805 - Manual (Page 674)

680 OSPF Commands
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area range
Use the area range command in Router OSPF Configuration mode to configure a summary prefix
for routes learned in a given area. There are two types of area ranges. An area range can be
configured to summarize intra-area routes. An ABR advertises the range rather than the specific
intra-area route as a type 3 summary LSA. Also, an area range can be configured at the edge of an
NSSA to summarize external routes reachable within the NSSA. The range is advertised as a type 5
external LSA.
Syntax
area area-id range ip-address subnet-mask {summarylink | nssaexternallink} [advertise |not-
advertise]
no area area-id range ip-address subnet-mask {summarylink | nssaexternallink}
• area-id—Identifies the OSPF NSSA to configure. (Range: IP address or decimal from 0-
4294967295)
• ip-address—IP address.
• subnet-mask—Subnet mask associated with IP address.
• summarylink—Specifies a summary link LSDB type.
• nssaexternallink—Specifies an NSSA external link LSDB type.
• advertise—Advertisement of the area range.
• notadvertise—Suppresses advertisement of the area range.
Default Configuration
This command has no default configuration.
Command Mode
Router OSPF Configuration mode
User Guidelines
Use this command with Area Border Routers (ABRs).
Example
The following example defines an area range for the area 20.
console(config-router)#area 20 range 192.168.6.0 255.255.255.0
summarylink advertise