<div dir="ltr"><div>Whoops completely forgot about localpref!</div><div><br></div><div>@Andrew 2x24/s wouldn't work for Telstra inbound though as they'd still be preferring their learned /23 from their customer vs the 2x/24s from their peer(s), right? Or do you mean it would work for making the majority of the traffic come in via the other provider?</div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Feb 17, 2014 at 2:37 PM, Matthew Moyle-Croft <span dir="ltr"><<a href="mailto:mmc@mmc.com.au" target="_blank">mmc@mmc.com.au</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class=""><br>
On 16 Feb 2014, at 7:15 pm, Joshua D'Alton <<a href="mailto:joshua@railgun.com.au">joshua@railgun.com.au</a>> wrote:<br>
<br>
> I could be wrong but BGP just doesn't support what you're wanting, and even more so no carrier is ever really going to work in the way you describe. It should never make sense (for a carrier) to not prefer their own routes (which are directly connected, ie admin dist 1), vs those of their peers (even if settlement free, admin dist 1+N), even if communities were involved (i believe telstra do use communities internally between telstra/telstraglobal/reach).<br>
<br>
</div>A lot of transit providers allow you to use communities to alter the localpref of your routes within their network so they prefer, for example, peers over directly connected.<br>
<br>
eg. <a href="https://www.us.ntt.net/support/policy/routing.cfm" target="_blank">https://www.us.ntt.net/support/policy/routing.cfm</a> with the 2914:4xx communities.<br>
<br>
Telstra's AS1221 network is devoid of communities for customers though. They have been asked to provide them and just don't.<br>
<span class="HOEnZb"><font color="#888888"><br>
MMC</font></span></blockquote></div><br></div>