Cisco ASR 9000 Series Configuration Manual page 389

Implementing OSPF
Command or Action
or
RP/0/RSP0/CPU0:router(config)# router ospfv3 1
Step 3 router-id { router-id }
Example:
RP/0/RSP0/CPU0:router(config-ospf)# router-id
192.168.4.3
Step 4 area area-id
Example:
RP/0/RSP0/CPU0:router(config-ospf)# area 1
Step 5 Do one of the following:
• stub [ no-summary ]
• nssa [ no-redistribution ] [
default-information-originate ] [ no-summary ]
Example:
RP/0/RSP0/CPU0:router(config-ospf-ar)# stub no
summary
or
RP/0/RSP0/CPU0:router(config-ospf-ar)# nssa
no-redistribution
Step 6 Do one of the following:
• stub
• nssa
Example:
RP/0/RSP0/CPU0:router(config-ospf-ar)# stub
or
RP/0/RSP0/CPU0:router(config-ospf-ar)# nssa
OL-30423-03
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.1.x
Configuring Stub and Not-So-Stubby Area Types
Purpose
Configures a router ID for the OSPF process.
Note We recommend using a stable IP address as the
router ID.
Enters area configuration mode and configures a
nonbackbone area for the OSPF process.
• The area-id argument can be entered in dotted-decimal
or IPv4 address notation, such as area 1000 or
area 0.0.3.232. However, you must choose one form
or the other for an area. We recommend using the IPv4
address notation.
Defines the nonbackbone area as a stub area.
• Specify the no-summary keyword to further reduce
the number of LSAs sent into a stub area. This keyword
prevents the ABR from sending summary link-state
advertisements (Type 3) in the stub area.
or
Defines an area as an NSSA.
(Optional) Turns off the options configured for stub and
NSSA areas.
• If you configured the stub and NSSA areas using the
optional keywords ( no-summary , no-redistribution
, default-information-originate , and no-summary
) in Step 5, you must now reissue the stub and nssa
commands without the keywords—rather than using
the no form of the command.
• For example, the no nssa
default-information-originate form of the command
changes the NSSA area into a normal area that
inadvertently brings down the existing adjacencies in
that area.
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