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Cisco ASA Series CLI Configuration Guide
 
Chapter 1      Configuring OSPF
  Configuring OSPFv3
area area-id range ipv6-prefix/ 
prefix-length [advertise | not advertise] 
[cost cost]
Example:
hostname(config-rtr)# area 1 range 
FE01:1::1/64 
Summarizes routes that match the address and mask for border 
routers only.
The area-id argument identifies the area for which routes are to 
be summarized. The value can be specified as a decimal or an 
IPv6 prefix. The ipv6-prefix argument specifies the IPv6 prefix. 
The prefix-length argument specifies the prefix length. The 
advertise keyword sets the address range status to advertised and 
generates a Type 3 summary LSA. The not-advertise keyword 
sets the address range status to DoNotAdvertise. The Type 3 
summary LSA is suppressed, and the component networks remain 
hidden from other networks. The cost cost keyword-argument 
pair specifies the metric or cost for the summary route, which is 
used during OSPF SPF calculations to determine the shortest 
paths to the destination. Valid values range from 0 to 16777215.
area area-id nssa 
Example:
hostname(config-rtr)# area 1 nssa 
Specifies an NSSA area.
Command Purpose