[j-nsp] RTBH

[Johan Borch]

Thanks

Setting route preference helped :)

Johan

On Fri, Jan 15, 2016 at 12:23 AM, Charles van Niman <charles at phukish.com>
wrote:

> What route preference is your IGP route, and what IGP? I assume your
> discard/static has a route preference of 5? Also, do you mind pasting
> the show route extensive output? Is your static discard route in the
> same routing-instance/VRF as the BGP prefix?
>
> /Charles
>
> On Thu, Jan 14, 2016 at 3:10 PM, Johan Borch <johan.borch at gmail.com>
> wrote:
> > Hi!
> >
> > I have implemented RTBH in my small network of 8 routers. DFZ is running
> in
> > a L3VPN and each router has an multihop ibgp-session with my RTBH-router
> > and it works, but I have one thing that annoys me.
> >
> > If I announce an offending IP to be black holed, only one of the routers
> > will point to the discard route. The other 7 will see the announced route
> > via BGP från the one that got it first I guess and send the traffic to
> that
> > one where is is discarded. If I do show extensive on the route it is
> prefer
> > because of IGP. I can't figure out how to get each router to prefer the
> > discard localy. If I do local pref on one router the other 7 will send
> the
> > traffic there instead.
> >
> > Every router has
> >
> >      route a.b.c.d/32 {
> >             discard;
> >             install;
> >         }
> >
> > And from sending RTBH router, they are announced with next-hop a.b.c.d.
> >
> > Idéas? :)
> >
> > Regards
> > Johan
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