[c-nsp] OSPF NSSA Question

[Zaheer Aziz]

At 05:36 PM 9/10/2004 -0400, Dan Armstrong wrote:


Hi Dan,

On any of the distribution routers apply this access-list on the incoming 
interface

access-list 101 deny   ospf host 116.16.13.1 host 224.0.0.5
access-list 101 permit ip any any <<<<<< or whatever

116.16.13.1  is interface access of the  OTHER dist router.

This should prevent neighbor relationship bw the two. There are other methods
like using secondary address etc etc but this should be the simplest.

Hope this helps
Zaheer


>I have a question, that may seem rather silly.... but it is driving me nuts.
>
>I have an NSSA area with a few access routers in it.  They are connected via
>Ethernet to 2 distribution layer routers.  The dist routers are advertising
>in a default route, and life is good.
>
>I would like to conserve IP addresses, and I was hoping to put the interfaces
>on the access routers, and the corresponsing interfaces on the distribution
>layer routers all in the same subnet - rather than make a whackload
>of /30nets everywhere.
>
>My problem is that when I do that, the two distribution layer routers form an
>adjacency with each other over the link%$#@#!!
>
>I realize that is "normal" behaviour... but it is not deseriable..
>
>Can I:
>
>-Explicitly force the two dist routers somehow not to form the adjacency?
>-Do I just go head and make my whackload of /30nets, and chew up IPs?
>
>It seems to me that this much have come up before....
>
>Any thoughts are appreciated.
>
>Dan.
>
>
>_______________________________________________
>cisco-nsp mailing list  cisco-nsp at puck.nether.net
>https://puck.nether.net/mailman/listinfo/cisco-nsp
>archive at http://puck.nether.net/pipermail/cisco-nsp/