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<p class=MsoNormal><span style='color:#1F497D'>Hi Phil,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>We have TWI & Pipe, full
tables, both are path-optimal - I don’t see the issues you are seeing. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Are we suggesting that you Youtube
have local preffed traffic for certain prefixes to Telstra, by way of Youtube
policy, or by way of Telstra sending a community to Youtube to influence their
local pref. Sending a community to increase local pref above default seems
highly unlikely if supported it usually goes the other way, are we super super
sure we aren’t seeing something that is consistent with “normal BGP
path selection algorithm”? route-views.oregon-ix.net has hooks into AS1221,
in lieu of an actual Telstra looking glass, everything looks ok?? (and likewise
over in pipe IX land?)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>( I must admit, I kind of glossed
over the “not to be confused with the normal BGP path selection process”
as we go on to talk about “giving preference” … Given that local
preference is a the top of the BGP decision chain, I was a little unclear as to
then what you would perceive as the “normal” BGP path selection
process. Just subnet/mask & AS prepend? Prefixes as viewed by the net? )<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Will flick you a TWI BGP knob-turner
contact off-list<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Kind regards,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
ausnog-bounces@lists.ausnog.net [mailto:ausnog-bounces@lists.ausnog.net] <b>On
Behalf Of </b>Phillip Britt<br>
<b>Sent:</b> Tuesday, 1 June 2010 1:27 PM<br>
<b>To:</b> ausnog@lists.ausnog.net<br>
<b>Subject:</b> [AusNOG] Telstra YouTube Servers<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hi There,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Just a short question to those who may use Telstra Wholesale
Internet and Pipe Peering. We have recently added Telstra as another
transit (in addition to Verizon) and have noticed a large drop in peering
traffic coming in through Sydney, we have done some tracking and it would now
appear that YouTube is now giving preference servers based at Telstra,
rather than those via Pipe Sydney. This should not be confused with the
normal BGP path selection process.<o:p></o:p></p>
<p class=MsoNormal><br>
We suspect that Telstra has advised our ranges to YouTube in a similar manner
to how Akamai works, and this is why they are redirecting locally.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Obviously we would prefer this traffic via Peering rather
than transit. Has anyone seen this before or had experience with dealing
with Telstra to have preference for those locally based servers removed?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Cheers,<o:p></o:p></p>
<p class=MsoNormal>Phil Britt<o:p></o:p></p>
<p class=MsoNormal>Aussie Broadband<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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