From: Scott Morris (swm@emanon.com)
Date: Mon Jul 31 2006 - 14:15:13 ART
According to the docs for the default-information-originate parameter:
"(Optional) Used to generate a Type 7 default into the NSSA area. This
keyword takes effect only on NSSA ABR or NSSA Autonomous System Boundary
Router (ASBR)."
HTH,
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE
#153, CISSP, et al.
CCSI/JNCI-M/JNCI-J
IPExpert VP - Curriculum Development
IPExpert Sr. Technical Instructor
smorris@ipexpert.com
http://www.ipexpert.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Shanky
Sent: Monday, July 31, 2006 10:42 AM
To: Scott Morris
Cc: CCIEin2006; Cisco certification
Subject: Re: Tricky One - Can Backbone router learn default route from NSSA?
Hi ,
Normally Default route should be sent by ABR but I think it was mentioned
that the default route has to be sent from R1 as part of the Task
requirement, technically we should be able to send a default route from any
router why only the ABR, right ?
Can someone explain it pls.
Thanks
Shanky
On 7/31/06, Scott Morris <swm@emanon.com> wrote:
>
> R1 is not the ABR. R3 is the ABR and therefore the one who should
> inject the 0/0 route.
>
> HTH,
>
>
> Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713,
> JNCIE #153, CISSP, et al.
> CCSI/JNCI-M/JNCI-J
> IPExpert VP - Curriculum Development
> IPExpert Sr. Technical Instructor
> smorris@ipexpert.com
> http://www.ipexpert.com
>
>
> _____
>
> From: CCIEin2006 [mailto:ciscocciein2006@gmail.com]
> Sent: Monday, July 31, 2006 6:39 AM
> To: swm@emanon.com
> Cc: Cisco certification
> Subject: Re: Tricky One - Can Backbone router learn default route from
> NSSA?
>
>
> Basically the setup looks like this:
>
> (R1)--Area100--(R3)--Area0
> |
> Area100
> |
> (R2)
>
> R1, R2, and R3 are connected to Area100 which is a NSSA. R3 is also
> connected to Area0.
> R1 is configured with Area 100 nssa default-information-originate.
>
> Both R2 and R3 see the 0.0.0.0 route in their OSPF database but only
> R2 actually enters the route in its routing table. R3 is not entering
> the route in its routing table.
>
> Can you explain why that is? I figured it might have something to do
> with
> R3
> being connected to Area0 but I'm not sure....
>
> Thanks
>
>
> On 7/30/06, Scott Morris <swm@emanon.com> wrote:
>
> NSSA doesn't inject a default route automagically. You need to put it
> on the command line:
>
> Area 100 nssa default-information-originate
>
> Every other stub area type does automagically give you 0/0, but nssa
> does not.
>
> Is that the problem you were running into?
>
>
> Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713,
> JNCIE #153, CISSP, et al.
> CCSI/JNCI-M/JNCI-J
> IPExpert VP - Curriculum Development
> IPExpert Sr. Technical Instructor
> smorris@ipexpert.com
> http://www.ipexpert.com
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of
> CCIEin2006
> Sent: Sunday, July 30, 2006 8:28 PM
> To: Cisco certification
> Subject: Tricky One - Can Backbone router learn default route from NSSA?
>
> I was doing one of the vendor labs and for some reason the backbone
> routers was not accepting a default route from its neighbor in a nssa.
> Is there a rule against this?
>
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