[j-nsp] OSPF IMPORT POLICIES

[Keegan Holley]

Since we're ventured into the strange... You could also run BGP with short
timers and filter the routes there.

On Thu, Dec 2, 2010 at 10:35 AM, James S. Smith <JSmith at windmobile.ca>wrote:

> Just thinking about hacks, one way that might work would be to setup static
> routes on the devices where you don't want these routes.  For example:
>
> set routing-options static route 192.168.123.0/24 reject
>
> Since this is a static it will be preferred over the OSPF routes.
>
>
>
> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net [mailto:
> juniper-nsp-bounces at puck.nether.net] On Behalf Of Phill Jolliffe
> Sent: December 1, 2010 7:50 PM
> To: giulianocm at uol.com.br
> Cc: juniper-nsp at puck.nether.net
> Subject: Re: [j-nsp] OSPF IMPORT POLICIES
>
> If your end goal is to prevent the ospf prefixes from becoming active
> in the PFE on a single chassis for then apply an export policy to the
> forwarding table under routing-options. The routes can sit active in
> the RIB but never make to the linecard.
>
> This is a dirty hack for several reason. Show route says one thing,
> show route forwarding-table another. LSDB looks good but doesn't match
> forwarding plane. Neighbor might compute paths across the router you
> apply the policy to, forward traffic and be back holed.
>
> That all said a dirty hack is what is needed in till there is time to
> re make the world pretty :-)
>
> On Thu, Dec 2, 2010 at 1:27 AM, Giuliano Cardozo Medalha
> <giulianocm at uol.com.br> wrote:
> > Is it possible to put the internal LSA routes pointing to discard
> next-hop ?
> >
> > We need to invalidate some routes ...
> >
> > Or is not possible to process it ?
> >
> > Is it only possible to set priority to the route ?
> >
> > Thanks a lot,
> >
> >
> >> Only external LSA can be prevented from entering the RIB via ospf import
> >> policy.
> >>
> >>
> >> On Thu, Dec 2, 2010 at 12:10 AM, Giuliano Cardozo Medalha
> >> <giulianocm at uol.com.br>  wrote:
> >>>
> >>> People,
> >>>
> >>> Hi,
> >>>
> >>> We are trying to filter OSPF Internal Routers from being installed into
> >>> the
> >>> RIB (Routing Table).
> >>>
> >>> JUNIPER has the correct command to filter input routes.
> >>>
> >>> set protocols ospf import<policy name>
> >>>
> >>> But when we create an import policy on our environment ... all the
> >>> internal
> >>> routes are not filtered and are installed onto the RIB.
> >>>
> >>> Is there any way to use policy routing to block the internal ospf
> routes
> >>> to
> >>> be installed onto the RIB ?
> >>>
> >>> it is possible to use rib-groups to redirect the ospf internal routes
> to
> >>> another routing table ?
> >>>
> >>> Can you please give to me some guide ?
> >>>
> >>> Thanks a lot,
> >>>
> >>> Giuliano
> >>> _______________________________________________
> >>> juniper-nsp mailing list juniper-nsp at puck.nether.net
> >>> https://puck.nether.net/mailman/listinfo/juniper-nsp
> >>>
> >>
> >>
> >
> >
>
>
>
> --
> Phill Jolliffe
>
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