On Jun 30, 2015, at 9:41 AM, Job Snijders <j...@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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