02-16-2007 09:24 AM - edited 03-03-2019 03:47 PM
Let's say I've got 3 routers
R1 -- R2 -- R3
R1 and R2 are in area 0
R2 and R3 are in area 1 nssa
R3 runs also RIP and redistributes rip into OSPF. So it's an ASBR.
Now, how do I make R1 learn about this default route coming from R3?
I've tried already:
1) create a static route on R3 + redistribute static subnets under OSPF --> no luck
2) Still on R3 under ospf router config: default-information originate always --> no luck
Thanks to read!
02-16-2007 09:46 AM
will you please post the out put of show run...
regards
Devang
02-16-2007 01:16 PM
To generate a default route in NSSA ASBR, use the command 'area (#) nssa default-information-originate' under the OSPF process. A default route needs to exist in the routing table for this to work.
HTH
Sundar
02-16-2007 01:32 PM
Hi there,
You need "area
As stated by Cisco:
"The ABR originates the 0.0.0.0 type 7 LSA, even though it does not have a default route."
How OSPF Injects a Default Route into a Not So Stubby Area:
http://www.cisco.com/en/US/tech/tk365/technologies_configuration_example09186a00801ec9fa.shtml
The ABR originates the 0.0.0.0 type 7 LSA, even though it does not have a default route.
r2.2.2.2#show ip route 0.0.0.0
% Network not in table
r1.1.1.1#show ip route ospf
O IA 6.0.0.0/8 [110/65] via 5.0.0.2, 00:00:18, Serial2/1/0
O*N2 0.0.0.0/0 [110/1] via 5.0.0.2, 00:00:18, Serial2/1/0
HTH, Please rate if it does,
Mohammed.
02-16-2007 01:40 PM
The original poster wants to originate default route on R3, which is an ASBR, for which you need to have to have a default route in the routing table to originate one. What you are saying is true only the if the router originating the default route is an ABR.
From CCO;
Default Type 7
The following configuration generates a type 7 default route. You can configure this command on any NSSA ASBR or NSSA ABR with the following rules:
* NSSA ASBR can generate a default only when it has a default route in its routing table.
* NSSA ABR can generate a default route with or without a default route in its own routing table.
The following command is used to generate an NSSA default route:
router ospf 1
area 1 nssa default-information originate
http://www.cisco.com/warp/public/104/nssa.html
HTH
Sundar
02-16-2007 01:54 PM
Hi Sundar,
I totally agree with you, and i am sorry for seeing the original poster's request the other way round.
regards,
Mohammed.
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