[c-nsp] filtering bgp routes

[Alban Dani]

Thank you all,

I am going to accept that prefix and build some more specific routes on my
side.

Alban


On 5/11/06, Joe Maimon <jmaimon at ttec.com> wrote:
>
> If he isnt announcing it, you cannot deny it.
>
> You can override it with other more specific routes
>
> Alban Dani wrote:
>
> > Richard,
> > thank you.
> >
> > You are right, and I have tried to convince the people that we're
> peering
> > with to do that but to no avail.
> >
> > So I am knind of stuck. Perhaps I should juist deny everything and put
> some
> > static routes in there.
> >
> > Alban
> >
> >
> > On 5/11/06, Richard Mikisa <rmikisa at gmail.com> wrote:
> >
> >>aha, not sure you can accept the entire /20 and then deny the 208 and
> >>209. I would have my neighbour break down the prefix he is announcing
> >>to something like
> >>
> >>216.221.208.0/23 --- which is what you want to deny
> >>
> >>and then the one's you want to accept accept
> >>
> >>216.221.210.0/23
> >>216.221.212.0/22
> >>216.221.216.0/21
> >>
> >>Would be easier to build filters based on that .
> >>
> >>On 5/11/06, Alban Dani <albcisco at gmail.com> wrote:
> >>
> >>>I am sorry,
> >>>
> >>>I ment I want everything but the 208 and 209, hence me trying to filter
> >>>them.
> >>>
> >>>Thank you,
> >>>
> >>>
> >>>Alban
> >>>
> >>>
> >>>
> >>>On 5/11/06, Richard Mikisa <rmikisa at gmail.com> wrote:
> >>>
> >>>>You state that you only want to receive prefixes 208 and 209 from the
> >>>>neighbor, but your prefix list is a deny for both 208 and 209. I am
> >>>>missing something ?
> >>>>
> >>>>On 5/11/06, Alban Dani <albcisco at gmail.com> wrote:
> >>>>
> >>>>>Hi,
> >>>>>
> >>>>>I got my lab going and many things are much clearer.
> >>>>>
> >>>>>However I still have a remaining issue.
> >>>>>
> >>>>>My neighboring router is advertising an aggregate 216.221.2.08/20.
> >>>>>
> >>>>>I do not want everything but the  216.221.208 and 216.221.209networks
> .
> >>>>>
> >>>>>I tried prefix lists like:
> >>>>>
> >>>>>ip prefix-list savvis-inbound deny 216.221.208.0/24
> >>>>>ip prefix-list savvis-inbound deny 216.221.209.0/24
> >>>>>ip prefix-list savvis-inbound permit 0.0.0.0/0 le 32
> >>>>>
> >>>>>but it did not filter anything?
> >>>>>
> >>>>>Any way I can achieve this/
> >>>>>
> >>>>>Thanks,
> >>>>>
> >>>>>Alban
> >>>>>_______________________________________________
> >>>>>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/
> >>>>>
> >>>>
> >>>>
> >>>>--
> >>>>cheers
> >>>>Richard
> >>>>
> >>>
> >>>
> >>
> >>--
> >>cheers
> >>Richard
> >>
> >
> > _______________________________________________
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> >
> >
>