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<div class="moz-cite-prefix">I don't think I've seen anyone.<br>
<br>
How does a NSP end up <b>originating</b> other people's prefixes
anyway? Is that some funky AS-path rewriting gone awry when
redistributing from IGP into {e}BGP?<br>
<br>
I personally would love some information.<br>
<br>
Leaks, the traditional ones, usually only reroute by inserting the
leaker's own ASN in the path.<br>
<br>
On 7/1/2015 午前 01:01, Faisal Hasan wrote:<br>
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cite="mid:CAM2x3i_W7cNTqgboAbnV4GRWriOyHJ0-pv1ZNHnkHc8DhKL_hw@mail.gmail.com"
type="cite">
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<div>Hi All,</div>
<div><br>
</div>
I see a lot of discussing is going on about the BD Route link at
nanog. Did anyone respond about it from BD side?
<div><br>
</div>
<div>Thanks</div>
<div>Faisal<br>
<div>
<div class="gmail_quote">---------- Forwarded message
----------<br>
From: <b class="gmail_sendername">Graham Beneke</b> <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:graham@apolix.co.za">graham@apolix.co.za</a>></span><br>
Date: Tue, Jun 30, 2015 at 10:45 AM<br>
Subject: Re: Route leak in Bangladesh<br>
To: <a moz-do-not-send="true"
href="mailto:nanog@nanog.org">nanog@nanog.org</a><br>
<br>
<br>
On 30/06/2015 17:09, Job Snijders wrote:<br>
> If you were the network causing a leak of this type,
prefix filters on<br>
> inbound facing your customers might not have
prevented this.<br>
><br>
> If you are a network providing transit to the leak
originator mentioned<br>
> in the above paragraph, I believe a prefix based
filter could have made<br>
> a big difference.<br>
<br>
We seem to be assuming that this leak occurred within the
context of a<br>
customer-provider BGP relationship.<br>
<br>
But what if this is not the case?<br>
<br>
What if this was a peering session - perhaps via a route
server at an<br>
exchange point. max-pref on a session with a route server
is an<br>
extremely blunt (and potentially ineffective) tool for the
job.<br>
<br>
In some regions the use to route servers and the lack of
clue about<br>
anything BGP beyond one session to the route server (and
one session to<br>
transit) is scary. We place our faith in the IXP operator,
that they<br>
know best, while there may be no evidence that they do...
;-)<br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
Graham Beneke<br>
</font></span></div>
<br>
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