<html><head><base href="x-msg://268/"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>+1</div><div><br></div><div>After the last Telstra/Dodo colossal screwup, I can't believe neither of them have put filters in place. No arses kicked hard enough perhaps?</div><div><br></div><div>All it would take is for ONE of them to filter appropriately and the problem would be solved permanently.</div><div><br></div><div>I've always written filters on the assumption that:</div><div>1: you can't trust your peers/upstreams to not make mistakes</div><div>2: you can trust yourself (or others making changes to your network) to not make mistakes.</div><div><br></div><div>Cheers!</div><div>-Shaun</div><div><br></div><div><br></div><div><div><div>On 02/05/2012, at 8:11 AM, Sean K. Finn wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-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: 0px; font-size: medium; "><div lang="EN-US" link="blue" vlink="purple"><div class="WordSection1" style="page: WordSection1; "><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">It sounds like they are blocking a host on your network, by dropping a null route into their routing table for something as little as a /32<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "><o:p> </o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">That null route is then leaking into BGP, and being aggregated, as they are seeing your /22 from somewhere else, they are then re-announcing this.<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "><o:p> </o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">DODO likely DO have route-filters setup. (But Telstra, why have you not learnt ?)<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "><o:p> </o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">What I suggest is happening is that DODO Trust their own local routing tables (i.e. router to router subnets), and anything that they are originating locally (Like a null route) is then considered trusted, and allowed through BGP.<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "><o:p> </o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">DODO, instead of trusting your local originating routing table, you should create a manual list of what you consider ‘LOCAL’ or originating prefixes from the inside of your network itself (i.e. not learnt routes), and then filter your local routing table against this list, too, before advertising your BGP Null routes.<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "><o:p> </o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">S.<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "><o:p> </o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">PS.<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">A question for any peering guru’s on this list, are ALL of the major Aussie IX’s performing route-filtering on the route reflectors to guard against routes like this leaking into the IX?<br>(i.e. PIPE, EQUINIX, and WAIA’s various peering IX’s?)<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "><br><br><o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><b><span style="font-size: 10pt; font-family: Tahoma, sans-serif; ">From:</span></b><span style="font-size: 10pt; font-family: Tahoma, sans-serif; "><span class="Apple-converted-space"> </span><a href="mailto:ausnog-bounces@lists.ausnog.net" style="color: blue; text-decoration: underline; ">ausnog-bounces@lists.ausnog.net</a><span class="Apple-converted-space"> </span>[mailto:ausnog-bounces@lists.ausnog.net]<span class="Apple-converted-space"> </span><b>On Behalf Of<span class="Apple-converted-space"> </span></b>Sheng Yeo<br><b>Sent:</b><span class="Apple-converted-space"> </span>Wednesday, May 02, 2012 10:04 AM<br><b>To:</b><span class="Apple-converted-space"> </span>Craig Askings<br><b>Cc:</b><span class="Apple-converted-space"> </span><a href="mailto:ausnog@lists.ausnog.net" style="color: blue; text-decoration: underline; ">ausnog@lists.ausnog.net</a><br><b>Subject:</b><span class="Apple-converted-space"> </span>Re: [AusNOG] Issue getting routes from Telstra to 49.156.16.0/22<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><o:p> </o:p></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; ">Thanks for all the replies everyone. We advertise everything as /24 subnets as well. <o:p></o:p></div><div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><o:p> </o:p></div><div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; ">Also, just as a quick note, we are not a customer of either Dodo or Telstra directly so we have no SLA with either of them. <o:p></o:p></div></div><div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><o:p> </o:p></div></div><div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; ">We advertise to Vocus, Equinix and AAPT who then advertise upstream to Telstra. This made it even more difficult to find the right person to speak to as we kept hitting walls as we were not customers of theirs. <o:p></o:p></div></div><div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><o:p> </o:p></div></div><div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; ">Thanks again for all the help. I will give them a call to discuss why this occurred (as I am still waiting for a reply). <o:p></o:p></div></div><div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><br clear="all"><o:p></o:p></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; "><span style="font-size: 10pt; font-family: Arial, sans-serif; ">Cheers,<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; "><b><span style="font-size: 10pt; font-family: Arial, sans-serif; color: rgb(64, 64, 64); "> </span></b><span style="font-size: 10pt; font-family: Arial, sans-serif; "><o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; "><b><span style="font-size: 10pt; font-family: Arial, sans-serif; color: rgb(64, 64, 64); ">Sheng Yeo</span></b><span style="font-size: 10pt; font-family: Arial, sans-serif; "><o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; "><span style="font-size: 10pt; font-family: Arial, sans-serif; color: rgb(64, 64, 64); ">Managing Director</span><span style="font-size: 10pt; font-family: Arial, sans-serif; "><o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; "><b><span style="font-size: 10pt; font-family: Arial, sans-serif; color: rgb(227, 108, 10); ">OrionVM Cloud Platform</span></b><span style="font-size: 10pt; font-family: Arial, sans-serif; "><o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; "><span style="font-size: 10pt; font-family: Arial, sans-serif; color: rgb(64, 64, 64); "> </span><span style="font-size: 10pt; font-family: Arial, sans-serif; "><o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; "><span style="font-size: 10pt; font-family: Arial, sans-serif; color: rgb(64, 64, 64); ">Mobile: +61 402 098 008</span><span style="font-size: 10pt; font-family: Arial, sans-serif; "><o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; "><span style="font-size: 10pt; font-family: Arial, sans-serif; color: rgb(64, 64, 64); ">Phone: +61 2 8004 6408</span><span style="font-size: 10pt; font-family: Arial, sans-serif; "><o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; "><span style="font-size: 10pt; font-family: Arial, sans-serif; color: rgb(64, 64, 64); ">Email:<span class="Apple-converted-space"> </span></span><span style="font-size: 10pt; font-family: Arial, sans-serif; color: blue; "><a href="mailto:sheng.yeo@orionvm.com.au" target="_blank" style="color: blue; text-decoration: underline; ">sheng.yeo@orionvm.com.au</a></span><span style="font-size: 10pt; font-family: Arial, sans-serif; "><o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; "><span style="font-size: 10pt; font-family: Arial, sans-serif; color: rgb(64, 64, 64); ">Web: <a href="http://www.orionvm.com.au/" target="_blank" style="color: blue; text-decoration: underline; ">www.orionvm.com.au</a></span><span style="font-size: 10pt; font-family: Arial, sans-serif; "><o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; "><span style="font-size: 10pt; font-family: Arial, sans-serif; color: rgb(64, 64, 64); "> </span><span style="font-size: 10pt; font-family: Arial, sans-serif; "><o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; "><span style="font-size: 8pt; font-family: Arial, sans-serif; color: rgb(64, 64, 64); ">This e-mail message and any attachments contain information that is confidential and may be subject to legal privilege.If you are not the intended recipient, you must not peruse, use, pass on or copy this message or any attachments. If you have received this e-mail in error, please notify us by return e-mail and erase all copies of this message including any attachments.</span><span style="font-size: 10pt; font-family: Arial, sans-serif; "><o:p></o:p></span></div><p class="MsoNormal" style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 12pt; "><br><br><o:p></o:p></p><div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; ">On 2 May 2012 10:00, Craig Askings <<a href="mailto:craig@askings.com.au" target="_blank" style="color: blue; text-decoration: underline; ">craig@askings.com.au</a>> wrote:<o:p></o:p></div><div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; ">On 2/05/2012 9:53 AM, Paul Wilkins wrote:<o:p></o:p></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; ">You'd expect that after recent events, that Dodo would have had a complete review of their BGP done by a third party expert. Seems strange this hasn't happened.<br><br>Paul Wilkins<o:p></o:p></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><o:p> </o:p></div></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; ">I doubt dodo have many if any clients on a SLA, what would their financial incentive to fix this?<br><br>Craig.<br>_______________________________________________<br>AusNOG mailing list<br><a href="mailto:AusNOG@lists.ausnog.net" target="_blank" style="color: blue; text-decoration: underline; ">AusNOG@lists.ausnog.net</a><br><a href="http://lists.ausnog.net/mailman/listinfo/ausnog" target="_blank" style="color: blue; text-decoration: underline; ">http://lists.ausnog.net/mailman/listinfo/ausnog</a><o:p></o:p></div></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><o:p> </o:p></div></div></div></div>_______________________________________________<br>AusNOG mailing list<br><a href="mailto:AusNOG@lists.ausnog.net" style="color: blue; text-decoration: underline; ">AusNOG@lists.ausnog.net</a><br><a href="http://lists.ausnog.net/mailman/listinfo/ausnog" style="color: blue; text-decoration: underline; ">http://lists.ausnog.net/mailman/listinfo/ausnog</a><br></div></span></blockquote></div><br></div></body></html>