From: Chris Lewis (chrlewiscsco@gmail.com)
Date: Sat Feb 11 2006 - 16:41:21 GMT-3
On first pass, quick look, I think you need to filter on R1 as well as area
0 is extended out there by the virtual-link as well
On 2/11/06, Radoslav Vasilev <deckland@gmail.com> wrote:
>
> Hi Group,
>
>
> The setup:
>
> (Area 0) fa 0/1[R2] fa0/0 ------------ (Area 12) ----------- fa0/0
> [R1]
> fa0/1 ------------ (Area 1)
>
> Obviously, we need to connect Area 1 to the Backbone area with a virtual
> link.
>
>
> A requirement is to filter a prefix in the OSPF database on R1 originated
> in
> Area 0. All summary routes should be visible as before (meaning no totally
> stub area is the requirement here).
>
> R2's configuration:
>
> router ospf 100
> area 12 filter-list prefix blabla in
>
> ip prefix-list blabla seq 5 deny 192.168.5.5/32
> ip prefix-list blabla seq 100 permit 0.0.0.0/0 le 32
>
> If i don't have virtual link in the above setup, the filtering works just
> fine. Aparatenly when i have the virtual-link up, i get the LSA over it
> and
> it's installed in the routing table on R1.
>
> My question: If the requirement is to prevent that LSA to be advertised to
> R1, what could be the solution? Remember that we could have additional
> areas
> connected to R2, meaining that we couldn't just use:
>
> area 0 filter-list prefix blabla out (filter the route coming from
> backbone
> and going out to all other areas)
>
> Any ideas?
>
>
> -rado
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Wed Mar 01 2006 - 11:28:17 GMT-3