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

[Gert Doering]

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
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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