Cisco IE-4000 Software Configuration Manual page 837

Configuring IP Unicast Routing
Configuring OSPF
DETAILED STEPS
Command
1. configure terminal
2. router ospf process-id
3. area area-id authentication
4. area area-id authentication
message-digest
5. area area-id stub [no-summary]
6. area area-id nssa [no-redistribution]
[default-information-originate]
[no-summary]
7. area area-id range address mask
8. end
9. show ip ospf [process-id]
show ip ospf [process-id [area-id]]
database
10. copy running-config startup-config
Use the no form of these commands to remove the configured parameter value or to return to the default value.
EXAMPLE
The following example mandates authentication for areas 0 and 10.0.0.0 of OSPF routing process 201. Authentication
keys are also provided.
interface ethernet 0
ip address 192.168.251.201 255.255.255.0
ip ospf authentication-key adcdefgh
!
interface ethernet 1
ip address 10.56.0.201 255.255.0.0
ip ospf authentication-key ijklmnop
!
router ospf 201
network 10.0.0.0 0.255.255.255 area 10.0.0.0
Purpose
Enter global configuration mode.
Enable OSPF routing, and enter router configuration mode.
(Optional) Allow password-based protection against
unauthorized access to the identified area. The identifier can
be either a decimal value or an IP address.
(Optional) Enable MD5 authentication on the area.
(Optional) Define an area as a stub area. The no-summary
keyword prevents an ABR from sending summary link
advertisements into the stub area.
(Optional) Defines an area as a not-so-stubby-area. Every
router within the same area must agree that the area is
NSSA. Select one of these keywords:

no-redistribution—Select when the router is an NSSA
ABR and you want the redistribute command to import
routes into normal areas, but not into the NSSA.

default-information-originate—Select on an ABR to
allow importing type 7 LSAs into the NSSA.

no-redistribution—Select to not send summary LSAs
into the NSSA.
(Optional) Specify an address range for which a single route
is advertised. Use this command only with area border
routers.
Return to privileged EXEC mode.
Display information about the OSPF routing process in
general or for a specific process ID to verify configuration.
Display lists of information related to the OSPF database for
a specific router.
(Optional) Save your entries in the configuration file.
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