<div dir="ltr"><div><div>But intuitively, having 1/4 of your infrastructure idle should be cheaper than having 1/2 of your infrastructure idle. If that's not the case, it's because of costs of interconnect and management. If you're a national carrier, your interconnect should be pretty cost effective. Then there's management of 4 rather than 2 data centres. If that's a problem, it suggests a potential opportunity to better leverage automation.<br><br></div>Kind regards<br><br></div>Paul Wilkins<br></div><div class="gmail_extra"><br><div class="gmail_quote">On 2 February 2017 at 15:18, Matt Smee <span dir="ltr"><<a href="mailto:m.smee@unsw.edu.au" target="_blank">m.smee@unsw.edu.au</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">







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<span style="font-size:11.0pt;font-family:Calibri">isn't standard architecture for core national infrastructure<u></u><u></u></span></p>
</span><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">because that sounds expensive.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><u></u> <u></u></span></p>
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<p class="MsoNormal"><b><span style="font-family:Calibri;color:black">From: </span>
</b><span style="font-family:Calibri;color:black">AusNOG <<a href="mailto:ausnog-bounces@lists.ausnog.net" target="_blank">ausnog-bounces@lists.ausnog.<wbr>net</a>> on behalf of Paul Wilkins <<a href="mailto:paulwilkins369@gmail.com" target="_blank">paulwilkins369@gmail.com</a>><br>
<b>Date: </b>Thursday, 2 February 2017 at 3:14 pm<br>
<b>To: </b>"<a href="mailto:ausnog@ausnog.net" target="_blank">ausnog@ausnog.net</a>" <<a href="mailto:ausnog@ausnog.net" target="_blank">ausnog@ausnog.net</a>></span></p><div><div class="h5"><br>
<b>Subject: </b>Re: [AusNOG] Telstra Network Down<u></u><u></u></div></div><p></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Of course when people say we have 2 core data centers, this should imply no data center is allowed to run over 50% capacity. It's odd/strange that 3 active core data centers should sound so unorthodox, yet this
 is the only way to assure you can run your DCs at 65% and handle a DC going black. Begs the question why 4 active core DCs isn't standard architecture for core national infrastructure (which would assure high availability under 75% load), and 2x efficient
 in idle infrastructure.<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Kind regards<u></u><u></u></p>
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<p class="MsoNormal">Paul Wilkins<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">On 2 February 2017 at 14:36, Nathan Brookfield <<a href="mailto:Nathan.Brookfield@simtronic.com.au" target="_blank">Nathan.Brookfield@simtronic.<wbr>com.au</a>> wrote:<u></u><u></u></p>
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<p><span style="font-family:Calibri;color:black">Pitt Street and Chatswood are two of the most integral exchanges in the country for Telstra with a lot of there core routing, switching etc housed here.<u></u><u></u></span></p>
<p><span style="font-family:Calibri;color:black"><u></u> <u></u></span></p>
<p><span style="font-family:Calibri;color:black">I'd say the increased load on the network from the Chats issue is likely a large part of the problem.  Services trying to re-established, lowered switching capacity and so on<u></u><u></u></span></p>
<p><span style="font-family:Calibri;color:black"><u></u> <u></u></span></p>
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<span style="font-size:10.0pt;font-family:Calibri;color:#1f497d">Kindest Regards,</span><span style="color:#212121"><u></u><u></u></span></p>
<p class="m_4043551383277788389m6404023785705755416xmsonormal" style="margin:0cm;margin-bottom:.0001pt;background:white">
<span style="font-size:10.0pt;font-family:Calibri;color:#365f91">Nathan Brookfield (VK2NAB)</span><span style="color:#212121"><u></u><u></u></span></p>
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<span style="font-size:10.0pt;font-family:Calibri;color:#365f91"> </span><span style="color:#212121"><u></u><u></u></span></p>
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<span style="font-size:10.0pt;font-family:Calibri;color:#365f91">Chief Executive Officer</span><span style="color:#212121"><u></u><u></u></span></p>
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<span style="font-size:10.0pt;font-family:Calibri;color:#365f91">Simtronic Technologies Pty Ltd</span><span style="color:#212121"><u></u><u></u></span></p>
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<span style="font-size:10.0pt;font-family:Calibri;color:#365f91"> </span><span style="color:#212121"><u></u><u></u></span></p>
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<b><span style="font-size:10.0pt;font-family:Calibri;color:#365f91">Local:</span></b><span style="font-size:10.0pt;font-family:Calibri;color:#365f91"> (02) 4749 4949 <b>|</b> <b>Fax:</b> (02) 4749 4950 <b>|</b> <b>Direct:</b> (02) 4749 4951</span><span style="color:#212121"><u></u><u></u></span></p>
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<b><span style="font-size:10.0pt;font-family:Calibri;color:#365f91">Web</span></b><span style="font-size:10.0pt;font-family:Calibri;color:#365f91">: <a href="http://www.simtronic.com.au/" target="_blank"><span style="color:#365f91">http://www.simtronic.com.<wbr>au</span></a> <b>|</b> <b>E-mail</b>: <a href="mailto:nathan.brookfield@simtronic.com.au" target="_blank"><span style="color:#365f91">nathan.<wbr>brookfield@simtronic.com.au</span></a></span><span style="color:#212121"><u></u><u></u></span></p>
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<span style="font-size:10.0pt;font-family:Calibri;color:#365f91"> </span><span style="color:#212121"><u></u><u></u></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:Calibri;color:black">From:</span></b><span style="font-size:11.0pt;font-family:Calibri;color:black"> AusNOG <<a href="mailto:ausnog-bounces@lists.ausnog.net" target="_blank">ausnog-bounces@lists.ausnog.<wbr>net</a>>
 on behalf of Patrick Cole <<a href="mailto:z@amused.net" target="_blank">z@amused.net</a>><br>
<b>Sent:</b> Thursday, 2 February 2017 2:33 PM<br>
<b>To:</b> Nathan Le Nevez <u></u><u></u></span></p>
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<b>Cc:</b> <a href="mailto:ausnog@ausnog.net" target="_blank">ausnog@ausnog.net</a><br>
<b>Subject:</b> Re: [AusNOG] Telstra Network Down<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Calibri;color:black">I think it's likely that there could be some critical some carrier
<br>
interconnects at that exchange.  So yeah, perhaps not so much that the <br>
service is down but more that certain destinations are unreachable?<br>
<br>
Thu, Feb 02, 2017 at 03:18:21AM +0000, Nathan Le Nevez wrote:<br>
<br>
> I beg to differ – I can’t call the bloke sitting next to me (busy tone). Has been like that since around 1pm…(Russell ACT)<br>
> <br>
> On 2/2/17, 2:14 pm, "AusNOG on behalf of Patrick Cole" <<a href="mailto:ausnog-bounces@lists.ausnog.net" target="_blank">ausnog-bounces@lists.ausnog.<wbr>net</a> on behalf of
<a href="mailto:z@amused.net" target="_blank">z@amused.net</a>> wrote:<br>
> <br>
>     Not nationwide, mobile seems fully functional here in ACT.  <br>
>     <br>
>     Patrick<br>
>     <br>
>     Thu, Feb 02, 2017 at 03:05:43AM +0000, Joe Saxton wrote:<br>
>     <br>
>     <br>
>     > A single fire at Chatswood brings all mobile services nationwide to a halt?
<br>
>     > <br>
>     > -----Original Message-----<br>
>     > From: AusNOG [<a href="mailto:ausnog-bounces@lists.ausnog.net" target="_blank">mailto:ausnog-bounces@lists.<wbr>ausnog.net</a>] On Behalf Of Brad Peczka<br>
>     > Sent: Thursday, 2 February 2017 1:53 PM<br>
>     > To: John Lindsay <<a href="mailto:johnslindsay@mac.com" target="_blank">johnslindsay@mac.com</a>>; jay binks <<a href="mailto:jaybinks@gmail.com" target="_blank">jaybinks@gmail.com</a>><br>
>     > Cc: <a href="mailto:ausnog@ausnog.net" target="_blank">ausnog@ausnog.net</a><br>
>     > Subject: Re: [AusNOG] Telstra Network Down<br>
>     > <br>
>     > Chatswood fire confirmed. <a href="https://twitter.com/Telstra/status/826986145011478528" target="_blank">
https://twitter.com/Telstra/<wbr>status/826986145011478528</a><br>
>     > <br>
>     > Regards,<br>
>     > -Brad.<br>
>     > ______________________________<wbr>__________<br>
>     > From: AusNOG [<a href="mailto:ausnog-bounces@lists.ausnog.net" target="_blank">ausnog-bounces@lists.ausnog.<wbr>net</a>] On Behalf Of John Lindsay [<a href="mailto:johnslindsay@mac.com" target="_blank">johnslindsay@mac.com</a>]<br>
>     > Sent: Thursday, 2 February 2017 10:50 AM<br>
>     > To: jay binks<br>
>     > Cc: <a href="mailto:ausnog@ausnog.net" target="_blank">ausnog@ausnog.net</a><br>
>     > Subject: Re: [AusNOG] Telstra Network Down<br>
>     > <br>
>     > Chatswood is an NBN POI too.<br>
>     > <br>
>     > Echos of Warrnambool: <a href="https://exchange.telstra.com.au/2015/07/06/warrnambool-exchange-fire-all-recommendations-complete/" target="_blank">
https://exchange.telstra.com.<wbr>au/2015/07/06/warrnambool-<wbr>exchange-fire-all-<wbr>recommendations-complete/</a><br>
>     > <br>
>     > jsl<br>
>     > <br>
>     > John Lindsay<br>
>     > <a href="mailto:johnslindsay@mac.com" target="_blank">johnslindsay@mac.com</a><mailto:<a href="mailto:johnslindsay@mac.com" target="_blank">jo<wbr>hnslindsay@mac.com</a>><br>
>     > <a href="tel:+61%20403%20577%20711" target="_blank">+61403577711</a><br>
>     > <br>
>     > On 2 Feb 2017, at 1:18 pm, jay binks <<a href="mailto:jaybinks@gmail.com" target="_blank">jaybinks@gmail.com</a><mailto:<a href="mailto:jaybinks@gmail.com" target="_blank">jay<wbr>binks@gmail.com</a>>> wrote:<br>
>     > <br>
>     > yea bit of a difference there..<br>
>     > I was thinking the same.<br>
>     > <br>
>     > SURELY Chatswood ( based on the level of impact )<br>
>     > <br>
>     > On 2 February 2017 at 12:44, John Lindsay <<a href="mailto:johnslindsay@mac.com" target="_blank">johnslindsay@mac.com</a><mailto:<a href="mailto:johnslindsay@mac.com" target="_blank">j<wbr>ohnslindsay@mac.com</a>>> wrote:<br>
>     > Chatsworth or Chatswood (Sydney)?<br>
>     > <br>
>     > John Lindsay<br>
>     > <a href="mailto:johnslindsay@mac.com" target="_blank">johnslindsay@mac.com</a><mailto:<a href="mailto:johnslindsay@mac.com" target="_blank">jo<wbr>hnslindsay@mac.com</a>><br>
>     > <a href="tel:+61%20403%20577%20711" target="_blank">+61403577711</a><tel:0403%20577%<wbr>20711><br>
>     > <br>
>     > On 2 Feb 2017, at 1:13 pm, Matthew Jenkins <<a href="mailto:mjenkins@airefrig.com.au" target="_blank">mjenkins@airefrig.com.au</a><<wbr>mailto:<a href="mailto:mjenkins@airefrig.com.au" target="_blank">mjenkins@airefrig.com.<wbr>au</a>>> wrote:<br>
>     > <br>
>     > Hi All,<br>
>     > <br>
>     > A Telstra Service Executive Rep said there is a fire in the Chatsworth exchange NSW.<br>
>     > Its Apparently staring to affect Mobiles calls nationally too.<br>
>     > <br>
>     > <br>
>     > From: AusNOG [<a href="mailto:ausnog-bounces@lists.ausnog.net" target="_blank">mailto:ausnog-bounces@lists.<wbr>ausnog.net</a>] On Behalf Of Jacob Bisby<br>
>     > Sent: Thursday, 2 February 2017 10:40 AM<br>
>     > To: <a href="mailto:ausnog@ausnog.net" target="_blank">ausnog@ausnog.net</a><<a href="mailto:ausnog@ausnog.net" target="_blank">mailto:<wbr>ausnog@ausnog.net</a>><br>
>     > Subject: Re: [AusNOG] Telstra Network Down<br>
>     > <br>
>     > Can also confirm no voice on Telstra MVNO's/resellers (Boost, Mactel).<br>
>     > <br>
>     > <br>
>     >  *   Jacob Bisby<br>
>     > <br>
>     > <br>
>     > From: AusNOG [<a href="mailto:ausnog-bounces@lists.ausnog.net" target="_blank">mailto:ausnog-bounces@lists.<wbr>ausnog.net</a>] On Behalf Of Kevin Wakefield<br>
>     > Sent: Thursday, 2 February 2017 10:24 AM<br>
>     > To: <a href="mailto:ausnog@ausnog.net" target="_blank">ausnog@ausnog.net</a><<a href="mailto:ausnog@ausnog.net" target="_blank">mailto:<wbr>ausnog@ausnog.net</a>><br>
>     > Subject: [AusNOG] Telstra Network Down<br>
>     > <br>
>     > Hi Everyone,<br>
>     > <br>
>     > Is anyone getting reports of outages from telstra at the moment as mobiles and adsl connections in sydney are down with some services dropping out ______________________________<wbr>_________________<br>
>     > AusNOG mailing list<br>
>     > <a href="mailto:AusNOG@lists.ausnog.net" target="_blank">AusNOG@lists.ausnog.net</a><<wbr>mailto:<a href="mailto:AusNOG@lists.ausnog.net" target="_blank">AusNOG@lists.ausnog.net</a><wbr>><br>
>     > <a href="http://lists.ausnog.net/mailman/listinfo/ausnog" target="_blank">
http://lists.ausnog.net/<wbr>mailman/listinfo/ausnog</a><br>
>     > <br>
>     > <br>
>     > ______________________________<wbr>_________________<br>
>     > AusNOG mailing list<br>
>     > <a href="mailto:AusNOG@lists.ausnog.net" target="_blank">AusNOG@lists.ausnog.net</a><<wbr>mailto:<a href="mailto:AusNOG@lists.ausnog.net" target="_blank">AusNOG@lists.ausnog.net</a><wbr>><br>
>     > <a href="http://lists.ausnog.net/mailman/listinfo/ausnog" target="_blank">
http://lists.ausnog.net/<wbr>mailman/listinfo/ausnog</a><br>
>     > <br>
>     > <br>
>     > <br>
>     > <br>
>     > --<br>
>     > Sincerely<br>
>     > <br>
>     > Jay<br>
>     > ______________________________<wbr>_________________<br>
>     > AusNOG mailing list<br>
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>     > use, disclose, distribute, print, or copy any part of this message if you are not<br>
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>     > <br>
>     <br>
>     -- <br>
>     Patrick Cole <<a href="mailto:z@wwwires.com" target="_blank">z@wwwires.com</a>><br>
>     Senior Network Specialist<br>
>     World Without Wires<br>
>     PO Box 869. Palm Beach, QLD, 4221<br>
>     Ph:  0410 626 630<br>
>     ______________________________<wbr>_________________<br>
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-- <br>
Patrick Cole <<a href="mailto:z@wwwires.com" target="_blank">z@wwwires.com</a>><br>
Senior Network Specialist<br>
World Without Wires<br>
PO Box 869. Palm Beach, QLD, 4221<br>
Ph:  0410 626 630<br>
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