Re: Route leak in Bangladesh

[Sandra Murphy <sandy () tislabs com>]

On Jun 30, 2015, at 9:41 AM, Job Snijders <job () instituut net> wrote:

> In addition to the BGP community scheme, outbound as-path filters could
> help. Most network's list of transit providers is fairly static, it
> would be easiy with as-path filters to prevent announcing upstream
> routes to other upstreams or peering partners.


Except that this was not a route leak per se.  The announced routes AS_PATH shows them as originated by the offending 
AS, not *propagated* by the offending AS. So the outbound AS_PATH did not retain the upstream portion of the path.

--Sandy

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