<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Edwin,<div>What you've described is much of the reasoning as to why most of the peering world doesn't like MLPAs - a lack of control and opportunities for transit theft.</div><div><br></div><div>Have you actually used your complex multiple ASes and IP-IP tunnels in practice? It sounds fairly unwieldly compared to the various filtering and contractual options available.</div><div><br></div><div>MMC</div><div> </div><div><br></div><div><div><div>On 05/09/2008, at 9:36 AM, Edwin Groothuis wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Now that I have a lot more free time and as a result my mind is<br>settling and things start to fall in place and actually make sense,<br>I have time to write up ideas, stories and experiences in the field<br>of inter-networking.<br><br>One of the more interesting issues with internet exchanges is that<br>you sometimes get unexpected results with regarding to routing and<br>the possibilities it gives.<br><br>At <a href="http://www.mavetju.org/weblog/html/00247.html">http://www.mavetju.org/weblog/html/00247.html</a> I have placed a<br>write up called "Big ISP, little ISP, local internet exchanges"<br>which is about the behaviour you initially don't expect, but is<br>perfectly explainable, when the local internet exchange gets hooked<br>up by both "edge ISPs" and "transit providers" and what transit<br>providers can do about it to overcome it.<br><br>Edwin<br>-- <br>Edwin Groothuis | Personal website: <a href="http://www.mavetju.org">http://www.mavetju.org</a><br><a href="mailto:edwin@mavetju.org">edwin@mavetju.org</a> | Weblog: <a href="http://www.mavetju.org/weblog/">http://www.mavetju.org/weblog/</a><br>_______________________________________________<br>AusNOG mailing list<br><a href="mailto:AusNOG@lists.ausnog.net">AusNOG@lists.ausnog.net</a><br><a href="http://lists.ausnog.net/mailman/listinfo/ausnog">http://lists.ausnog.net/mailman/listinfo/ausnog</a><br></div></blockquote></div><br><div apple-content-edited="true"> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>-- <br>Matthew Moyle-Croft Internode/Agile Peering and Core Networks<br>Level 4, 150 Grenfell Street, Adelaide, SA 5000 Australia<br>Email: <a href="mailto:mmc@internode.com.au">mmc@internode.com.au</a> Web: <a href="http://www.on.net/">http://www.on.net</a><br>Direct: +61-8-8228-2909<span class="Apple-tab-span" style="white-space: pre; "> </span><span class="Apple-tab-span" style="white-space: pre; "> </span> Mobile: +61-419-900-366<br>Reception: +61-8-8228-2999 Fax: +61-8-8235-6909<br></div></div></span> </div><br></div></body></html>