[c-nsp] BGP question : What's the best way for filtering outgoing prefixes?

[Jay Nakamura]

Excellent.  Thanks Gert and Chip!

On Thu, Aug 18, 2011 at 4:25 PM, Gert Doering <gert at greenie.muc.de> wrote:
> Hi,
>
> On Thu, Aug 18, 2011 at 04:00:52PM -0400, Jay Nakamura wrote:
>> Option 1
>> Set all routes learned from A and B with unique community, and filter
>> out any routes with that community for outgoing routes to A and B.
>>
>> Option 2
>> Filter on AS-Path for routes going out A and B with
>> <AS-X>$
>> <AS-X>_(<AS_CUSTOMER>)+_$
>> (I think, I haven't looked closely at AS path syntax)
>
> Both will work, but option 1 is "what everybody else does" because it's
> much less effort in the long run.
>
> gert
> --
> USENET is *not* the non-clickable part of WWW!
>                                                           //www.muc.de/~gert/
> Gert Doering - Munich, Germany                             gert at greenie.muc.de
> fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
>