<div dir="ltr">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).<div>
<br></div><div>Even if you advertised /24s telstra would still use their own learned routes (from you) rather than peer learned routes (from your alternate upstream), as designed BGP.</div><div><br></div><div>I don't know for sure it is default behaviour for TWI, but I believe it is default for... the internet in general.</div>
<div><br></div><div>I think the only way to achieve what you want would be to engineer the system such that nothing is advertised to telstra, and only advertised if the other link goes down. I can think of a few ways to do this, but keeping in mind BGP announce times, it wouldn't be a 100% uptime.</div>
<div><br></div><div>Good luck with the traffic engineering, there are definitely a few onlist that are experts.</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Feb 17, 2014 at 1:59 PM, Chris Gibbs <span dir="ltr"><<a href="mailto:Chris.Gibbs@gosford.nsw.gov.au" target="_blank">Chris.Gibbs@gosford.nsw.gov.au</a>></span> wrote:<br>
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<p class="MsoNormal">Hey all,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">We currently utilise Telstra Internet Direct services for our primary inbound for AS38236, I would like to move to using Telstra as the least preferred and swap to another provider for inbound.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">When I tested the swap, the majority of domestic looking glasses were confirming inbound through our preferred inbound. However Telstra always seems to prefer their own routes instead of peer learnt; even after setting either as-prepend
or MED. A Telstra engineer confirmed this.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">My question is pretty much is there any other way to steer inbound traffic to us through Telstra? (without grabbing a /23 and advertising more specific 2 x /24s or using communities, which Telstra doesn’t support)<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">The only other alternative would be to swap providers at our DR site, and we originally had issues getting a service installed there.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Does anyone also know if this is the default behaviour through Telstra Wholesale Internet?<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Cheers ,<u></u><u></u></p>
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<p><font style="FONT-FAMILY:arial;FONT-SIZE:11pt">Chris Gibbs<br>
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