Users Guide

area nssa
Defines an area as a NSSA.
Syntax
area area-id nssa [default-information-originate | no-redistribution | no-
summary]
Parameters
● area-id — Enter the OSPF area ID as an IP address in A.B.C.D format or number, from 1 to 65535.
● no-redistribution — (Optional) Prevents the redistribute command from distributing
routes into the NSSA. Use no-redistribution command only in an NSSA ABR.
● no-summary — (Optional) Ensures that no summary LSAs are sent to the NSSA.
Default Not configured
Command Mode ROUTER-OSPF
Usage
Information
The no version of this command deletes an NSSA.
Example
OS10(conf-router-ospf-10)# area 10.10.1.5 nssa
Supported
Releases
10.2.0E or later
area range
Summarizes routes matching an address/mask at an area in ABRs.
Syntax
area area-id range ip-address [no-advertise]
Parameters
● area-id — Set the OSPF area ID as an IP address in A.B.C.D format or number, from 1 to 65535.
● ip-address — (Optional) Enter an IP address/mask in dotted decimal format.
● no-advertise — (Optional) Set the status to Do Not Advertise. The Type 3 summary-LSA is
suppressed and the component networks remain hidden from other areas.
Default Not configured
Command Mode ROUTER-OSPF
Usage
Information
You can use this command to summarize routes at ABR level. Summarized route must be installed in RTM
and advertised over OSPFv3 neighbors at area border router level (ABR). The not-advertise option in the
range command must suppress advertising of the specified summary route. Meaning, do not advertise the
configured ABR summary route along with individual routes that fall under the summary route. Default
behavior is advertise(set to TRUE. Type 3 summary-LSA is suppressed and the component networks
remain hidden from other areas). This command is restricted to the netadmin, sysadmin, and secadmin
user roles. The no version of this command disables the route summarizations.
Example
OS10(conf-router-ospf-10)# area 0 range 10.1.1.4/8 no-advertise
OS10(config-router-ospfv3-10)# area 1.1.1.1 range 101::/16
OS10(config-router-ospfv3-10)# show configuration
!
router ospfv3 10
area 1.1.1.1 range 101::/16
OS10(config-router-ospfv3-10)# area 1.1.1.1 range 101::/16
OS10(config-router-ospfv3-10)# show configuration
!
router ospfv3 10
area 1.1.1.1 range 101::/16
OS10(config-router-ospfv3-10)# area 1.1.1.1 range 101::/16 not-advertise
Suppress route summarization. Advertise individual routes that fall
under the summary route.
OS10(config-router-ospfv3-10)# show configuration
!
router ospfv3 10
area 1.1.1.1 range 101::/16 not-advertise
Layer 3 939