988 Configuring OSPF and OSPFv3
Configuring an OSPFv3 Area Range
Beginning in Privileged EXEC mode, use the following commands to 
configure an OSPFv3 area range.
Command Purpose
configure Enter global configuration mode.
ipv6 router ospf Enter OSPFv3 configuration mode.
area 
area-id
 range 
ipv6-
prefix/prefix-length 
{summarylink | 
nssaexternallink} 
[advertise |not-advertise]
Configure a summary prefix for routes learned in a given 
area. 
•
area-id
 — Identifies the OSPFv3 NSSA to configure. 
(Range: IP address or decimal from 0–4294967295)
•
ipv6-prefix/prefix-length
 — IPv6 address and prefix 
length.
•
summarylink
 — Specifies a summary link LSDB type.
•
nssaexternallink
 — Specifies an NSSA external link 
LSDB type.
•
advertise
 — Advertisement of the area range.
•
not-advertise
 — Suppresses advertisement of the area 
range.
exit Exit to Global Config mode.
exit Exit to Privileged EXEC mode.
show ipv6 ospf range 
area-
id
View information about the area ranges for the specified 
area-id.