--- ckerr(a)cs.otago.ac.nz wrote:
From: Cameron Kerr
Hi everyone, I'm just updating my lecture on exteriour routing for this year, and am wanting to know more about the current state of unfiltered BGP, whereby a customer can advertise a prefix they don't have, their service provider didn't suitably filter the advertisement, and it disrupts other networks in the internet.
My previous impression, based on discussions around incidents such as the YouTube/Pakistan incident, lead to me believe "Most people don't filter", and I'm just wanting to see if that is [still] the case now.
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I don't know if you mean globally, or just in NZ, but filtering is prevalent in all situations I have been in. This is in the US with higher tier providers, such as Sprint, AT&T and Qwest. Additionally, I filtered downstream customers when I worked at the ILEC here in Hawaii. Thank goodness, too, as some of them really messed it all up: sent me the entire internet, candidate default routes, etc., etc...
scott
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