PurposeCommand or Action
or
RP/0/RSP0/CPU0:router(config)# router ospfv3 1
Configures a router ID for the OSPF process.
router-id { router-id }
Step 3
Example:
RP/0/RSP0/CPU0:router(config-ospf)# router-id
192.168.4.3
We recommend using a stable IP address as the
router ID.
Note
Enters area configuration mode and configures a
nonbackbone area for the OSPF process.
area area-id
Example:
RP/0/RSP0/CPU0:router(config-ospf)# area 1
Step 4
•
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.Do one of the following:
Step 5
•
stub [ no-summary ]
•
Specify the no-summary keyword to further reduce
the number of LSAs sent into a stub area. This keyword
•
nssa [ no-redistribution ] [
default-information-originate ] [ no-summary ]
prevents the ABR from sending summary link-state
advertisements (Type 3) in the stub area.
Example:
RP/0/RSP0/CPU0:router(config-ospf-ar)# stub no
summary
or
Defines an area as an NSSA.
or
RP/0/RSP0/CPU0:router(config-ospf-ar)# nssa
no-redistribution
(Optional) Turns off the options configured for stub and
NSSA areas.
Do one of the following:
Step 6
•
stub
•
If you configured the stub and NSSA areas using the
optional keywords ( no-summary , no-redistribution
•
nssa
, default-information-originate , and no-summary
Example:
RP/0/RSP0/CPU0:router(config-ospf-ar)# stub
) in Step 5, you must now reissue the stub and nssa
commands without the keywords—rather than using
the no form of the command.
or
RP/0/RSP0/CPU0:router(config-ospf-ar)# nssa
•
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.
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.3.x
438
Implementing OSPF
Configuring Stub and Not-So-Stubby Area Types
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