<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=Windows-1252">
</head>
<body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">
<style type="text/css" style="display:none;"><!-- P {margin-top:0;margin-bottom:0;} --></style>
<div id="divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif;" dir="ltr">
<p>cue "polluting the BGP table" statements.....</p>
</div>
<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> AusNOG <ausnog-bounces@lists.ausnog.net> on behalf of Tim Raphael <raphael.timothy@gmail.com><br>
<b>Sent:</b> Monday, February 27, 2017 3:35:34 PM<br>
<b>To:</b> Matt Selbst<br>
<b>Cc:</b> ausnog@lists.ausnog.net<br>
<b>Subject:</b> Re: [AusNOG] Inbound BGP traffic balancing</font>
<div> </div>
</div>
<div>
<div class="">Hey Matt,</div>
<div class=""><br class="">
</div>
<div class="">Another option is to split your advertisements, if you have a /23, advertise two /24s out separate connections and also the /23 incase a peer breaks.</div>
<div class="">I’m not sure if that’s what you meant by “smaller prefixes” but it’s another way.</div>
<div class=""><br class="">
</div>
<div class="">I’ve never done this before in prod but it’s a fairly usual occurrence for enterprises with a smaller number of IPs and destinations.</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class="">- Tim </div>
<div class=""><br class="">
</div>
<br class="">
<div>
<blockquote type="cite" class="">
<div class="">On 27 Feb 2017, at 3:27 pm, Nathan Brookfield <<a href="mailto:Nathan.Brookfield@simtronic.com.au" class="">Nathan.Brookfield@simtronic.com.au</a>> wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div id="divtagdefaultwrapper" dir="ltr" style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; font-size: 12pt; font-family: Calibri, Arial, Helvetica, sans-serif;" class="">
<div style="margin-top: 0px; margin-bottom: 0px;" class="">Your best option is to AS-PATH-PREPEND the better of the two carriers until you get a good balance, adding one AS hop to the outbound announcement is usually enough to make a fair difference but there
is no way to ensure 50/50, it's just not going to happen especially if one of your upstream's is a carrier like Vocus who are well peered across the world.</div>
<div style="margin-top: 0px; margin-bottom: 0px;" class=""><br class="">
</div>
<div id="Signature" class="">
<div id="divtagdefaultwrapper" style="font-size: 12pt; background-color: rgb(255, 255, 255); font-family: Calibri, Arial, Helvetica, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI Symbol', 'Android Emoji', EmojiSymbols;" class="">
<p style="margin-top: 0px; margin-bottom: 0px;" class=""></p>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; color: rgb(33, 33, 33);" class="">
<span style="font-size: 10pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class="">Kindest Regards,</span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; color: rgb(33, 33, 33);" class="">
<span style="font-size: 10pt; font-family: Calibri, sans-serif; color: rgb(54, 95, 145);" class="">Nathan Brookfield (VK2NAB)</span></div>
<p class="x_MsoNormal" style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; color: rgb(33, 33, 33);">
<span style="font-size: 10pt; font-family: Calibri, sans-serif; color: rgb(54, 95, 145);" class=""> </span></p>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; color: rgb(33, 33, 33);" class="">
<span style="font-size: 10pt; font-family: Calibri, sans-serif; color: rgb(54, 95, 145);" class="">Chief Executive Officer</span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; color: rgb(33, 33, 33);" class="">
<span style="font-size: 10pt; font-family: Calibri, sans-serif; color: rgb(54, 95, 145);" class="">Simtronic Technologies Pty Ltd</span></div>
<p class="x_MsoNormal" style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; color: rgb(33, 33, 33);">
<span style="font-size: 10pt; font-family: Calibri, sans-serif; color: rgb(54, 95, 145);" class=""> </span></p>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; color: rgb(33, 33, 33);" class="">
<b class=""><span style="font-size: 10pt; font-family: Calibri, sans-serif; color: rgb(54, 95, 145);" class="">Local:</span></b><span style="font-size: 10pt; font-family: Calibri, sans-serif; color: rgb(54, 95, 145);" class=""> (02) 4749 4949 <b class="">|</b> <b class="">Fax:</b> (02)
4749 4950 <b class="">|</b> <b class="">Direct:</b> (02) 4749 4951</span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; color: rgb(33, 33, 33);" class="">
<b class=""><span style="font-size: 10pt; font-family: Calibri, sans-serif; color: rgb(54, 95, 145);" class="">Web</span></b><span style="font-size: 10pt; font-family: Calibri, sans-serif; color: rgb(54, 95, 145);" class="">: <a href="http://www.simtronic.com.au/" target="_blank" id="LPNoLP" class=""><span style="color: rgb(54, 95, 145);" class="">http://www.simtronic.com.au</span></a> <b class="">|</b> <b class="">E-mail</b>: <a href="mailto:nathan.brookfield@simtronic.com.au" target="_blank" id="LPNoLP" class=""><span style="color: rgb(54, 95, 145);" class="">nathan.brookfield@simtronic.com.au</span></a></span></div>
<p class="x_MsoNormal" style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; color: rgb(33, 33, 33);">
<span style="font-size: 10pt; font-family: Calibri, sans-serif; color: rgb(54, 95, 145);" class=""> </span></p>
</div>
</div>
<div style="" class="">
<hr tabindex="-1" style="display: inline-block; width: 609.546875px;" class="">
<div id="divRplyFwdMsg" dir="ltr" class=""><font face="Calibri, sans-serif" style="font-size: 11pt;" class=""><b class="">From:</b><span class="Apple-converted-space"> </span>AusNOG <<a href="mailto:ausnog-bounces@lists.ausnog.net" class="">ausnog-bounces@lists.ausnog.net</a>>
on behalf of Matt Selbst <<a href="mailto:matt.j.selbst@gmail.com" class="">matt.j.selbst@gmail.com</a>><br class="">
<b class="">Sent:</b><span class="Apple-converted-space"> </span>Monday, 27 February 2017 3:22 PM<br class="">
<b class="">To:</b><span class="Apple-converted-space"> </span><a href="mailto:ausnog@lists.ausnog.net" class="">ausnog@lists.ausnog.net</a><br class="">
<b class="">Subject:</b><span class="Apple-converted-space"> </span>[AusNOG] Inbound BGP traffic balancing</font>
<div class=""> </div>
</div>
<div class="">
<div dir="ltr" class="">Hi All,
<div class=""><br class="">
</div>
<div class="">I've currently got transit from two of the major carriers and it seems that if I don't do any manipulation BGP naturally makes about 90% of the traffic come through the one carrier and only ~10% through the other.</div>
<div class=""><br class="">
</div>
<div class="">I've tried all the usual tricks like shorter prefixes, communities etc but not really getting much that I can rely on for even split.<br class="">
</div>
<div class=""><br class="">
</div>
<div class="">Is there a much more reliable way of evenly balancing inbound traffic 50/50? I'm open to commercial solutions if one exists.</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class="">-Matt</div>
<div class=""><br class="">
</div>
</div>
</div>
</div>
</div>
<span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">_______________________________________________</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">AusNOG
mailing list</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class=""><a href="mailto:AusNOG@lists.ausnog.net" class="">AusNOG@lists.ausnog.net</a></span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class=""><a href="http://lists.ausnog.net/mailman/listinfo/ausnog" class="">http://lists.ausnog.net/mailman/listinfo/ausnog</a></span></div>
</blockquote>
</div>
<br class="">
</div>
</body>
</html>