From: Private Ryan (pv.ryan@gmail.com)
Date: Sun Sep 18 2005 - 21:56:07 GMT-3
I agree with you. I used this command before and it worked !
just want to add some words.
You need to apply filter-list command in ALL ABR touching area 66.
Otherwise, the routes will be leaked from those routers.
2005/9/19, FCO.JAVIER TOME MORAN <fjtm@tid.es>:
> If you want to to prevent Type3 LSA routes enter Area66 you need to
> apply the filter-list on inbound direction. The configuration applied
> should be like this..
>
> router ospf 1
> area 66 filter-list prefix AREA_66_INBOUND in
>
> ip prefix-list AREA_66_INBOUND deny 0.0.0.0/0 le 32
>
> With this config you will be denying all prefixes. If you have already
> tried this, may be you forgot to clear neighbor relationships on the
> router to force the update of databases of all routers in area 66...
>
> I remember having tested this with in 12.2(15)T and I seeing it work. I
> will try to test it again as soon as I can and let you know...
>
>
>
>
>
>
>
> ----- Mensaje original -----
> De: nenad pudar <nenad.pudar@gmail.com>
> Fecha: Domingo, Septiembre 18, 2005 8:25 pm
> Asunto: Re: OSPF ABR Type 3 LSA Filtering
>
> > Javi
> >
> > This is exactly what I want in this case (to prevent all inter-
> > area routes
> > to enter area 66)
> > However in some other examples I tried I see that it is not
> > working in
> > either direction.
> >
> > nenad
> >
> >
> > On 9/18/05, FCO.JAVIER TOME MORAN <fjtm@tid.es> wrote:
> > >
> > > Hi Henad,
> > >
> > > I am not really sure, but I think that you missed the direction
> > of the
> > > filtering clause. "Out" direction is for prefixes leaving the Area,
> > > and "In" direccion is for prefixes entering the Area.
> > >
> > > Please, try and tell us about the result...
> > >
> > > Javi
> > >
> > >
> > >
> > > ----- Mensaje original -----
> > > De: nenad pudar <nenad.pudar@gmail.com>
> > > Fecha: Domingo, Septiembre 18, 2005 6:40 pm
> > > Asunto: OSPF ABR Type 3 LSA Filtering
> > >
> > > > Problem with OSPF ABR Type 3 LSA Filtering
> > > >
> > > > OSPF ABR Type 3 LSA Filtering is supposed to be supported from
> > > > 12.2(4) T.
> > > > I can configure it but I do not see that it works
> > > > I am trying to filter all IA routes from ABR in area 66
> > > >
> > > > RTA-R1#sh ver
> > > > Cisco Internetwork Operating System Software
> > > > IOS (tm) C2600 Software (C2600-IS-M), Version 12.2(11)T11, RELEASE
> > > > SOFTWARE(fc1)
> > > >
> > > > router ospf 1
> > > > router-id 1.1.1.1 <http://1.1.1.1> <http://1.1.1.1>
> > > > log-adjacency-changes
> > > > area 0 authentication message-digest
> > > > area 66 filter-list prefix AREA_66_OUT out
> > > > network 10.50.2.2 <http://10.50.2.2> <http://10.50.2.2>
> > 0.0.0.0<http://0.0.0.0><> http://0.0.0.0> area 0
> > > > network 10.100.2.1 <http://10.100.2.1> <http://10.100.2.1>
> > 0.0.0.0<http://0.0.0.0><> http://0.0.0.0>
> > > > area 111
> > > > network 172.16.35.66 <http://172.16.35.66>
> > <http://172.16.35.66> 0.0.0.0<http://0.0.0.0>
> > > > <http://0.0.0.0> area 0
> > > > network 172.16.66.6 <http://172.16.66.6> <http://172.16.66.6>
> > 0.0.0.0<http://0.0.0.0><> http://0.0.0.0>
> > > > area 66
> > > > !
> > > >
> > > > !
> > > > ip prefix-list AREA_66_OUT seq 5 deny 0.0.0.0/0
> > <http://0.0.0.0/0> <
> > > http://0.0.0.0/0>
> > > > le 32
> > > >
> > > > However I still see all IA routes on the other end (router in
> > area 66)
> > > >
> > > > Is there anything wrong in this config or I am missing something
> > > > here ?
> > > >
> > > > thanks
> > > > nenad
> > > >
> > > >
> > >
> >
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