<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1435868663267_10155">Hi<br></div><div dir="ltr" id="yui_3_16_0_1_1435868663267_10321"><br></div><div id="yui_3_16_0_1_1435868663267_16091" dir="ltr">I have experienced the same problem with AirTel and SingTel. <br></div><div id="yui_3_16_0_1_1435868663267_16109" dir="ltr">If both DHK com and Link3 have the same upstream and both DHK Com/Link3 advertise same prefix to same upstream then need to TE on ISP side. Please check route server. <br></div><div id="yui_3_16_0_1_1435868663267_21293" dir="ltr"><br></div><div id="yui_3_16_0_1_1435868663267_21303" dir="ltr">Regards,</div><div id="yui_3_16_0_1_1435868663267_21302" dir="ltr">Kamruzzaman<br></div><div id="yui_3_16_0_1_1435868663267_9543"><span></span></div> <br><div class="qtdSeparateBR"><br><br></div><div style="display: block;" class="yahoo_quoted"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"> <font face="Arial" size="2"> On Thursday, July 2, 2015 4:04 PM, Mirza Rakib <mmrakib@gmail.com> wrote:<br> </font> </div> <br><br> <div class="y_msg_container"><div id="yiv4647572617"><div><div dir="ltr">Hi Rana Vai,<br clear="none">
As my knowledge and understanding, more specific announcemnet is the best solution rather than as-path prepending which Zobair Vai mentioned. I had have the similar experienced. However, as-path prepending is a nice technique it should work.</div>
<div dir="ltr">Expecting more comments regarding as-path prepending in such situation. Someone have more than 3/4 ISP.And subnet and supernet may be difficult in some cases.</div>
<div dir="ltr">Regards,<br clear="none">
Mirza Rakib</div>
<div class="yiv4647572617gmail_quote">On 2 Jul 2015 00:35, "Md. Zobair Khan" <<a rel="nofollow" shape="rect" ymailto="mailto:kzobair@gmail.com" target="_blank" href="mailto:kzobair@gmail.com">kzobair@gmail.com</a>> wrote:<br clear="none"><blockquote class="yiv4647572617gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="yiv4647572617yqt9641633593" id="yiv4647572617yqt92188"><div dir="ltr">Hi,<div lang="en-US"><br clear="none"></div><div lang="en-US"><br clear="none"></div><div lang="en-US">You might want to make your policy with super net and sub net. Do prefix filtering instead of AS filtering. Sometimes the as path prepend do not work due to the traffic policy of upstreams. </div><div lang="en-US"><br clear="none"></div><div lang="en-US">Announce the more specific prefixes (like /24) to Dhakacom and less specifix prefixes (like /22 or /23) to Link3. That way, you should get your inbound traffic via Dhakacom, not via Link3.</div><div lang="en-US"><br clear="none"></div><div lang="en-US"><br clear="none"></div><div lang="en-US">BR<br clear="none">Zobair</div><div lang="en-US"><br clear="none"></div></div></div>
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