Users Guide

Layer 3 Routing Commands 1813
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. Use the no form of the command to remove the summary prefix
configuration for routes learned in the specified area.
Syntax
area area-id range ipv6-prefix/prefix-length {summarylink |
nssaexternallink} [advertise | not-advertise]
no area
area-id range ipv6-prefix/prefix-length {summarylink |
nssaexternallink}
•
areaid —Valid OSPFv3 area identifier.
•
ipv6-prefix/prefix-length —Valid route prefix.
• summarylink—LSDB type
• nssaexternallink—LSDB type.
• advertise—Allows area range to be advertised.
• not-advertise—Suppresses area range from being advertised.
Default Configuration
This command has no default configuration.
Command Mode
Router OSPFv3 Configuration mode.
User Guidelines
The LSDB type must be specified by either summarylink or nssaexternallink,
and the advertising of the area range can be allowed or suppressed.
Example
The following example creates an area range for the area 1 NSSA.
console(config)#ipv6 router ospf
console(config-rtr)#area 1 range 2020:1::1/64 summarylink