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</o:shapelayout></xml><![endif]--></head><body lang=EN-NZ link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>Personally, I’d recommend sticking with bind, but load balance a couple of VM’s behind a couple of pairs of entry level (say 100D, VM01 or larger) Fortigate pairs (built in basic but perfectly adequate load balancing/health checking). That way you can easily and cheaply scale, grow and maintain as needed. This works well.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>cheers<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'> AusNOG [mailto:ausnog-bounces@lists.ausnog.net] <b>On Behalf Of </b>paul+ausnog@oxygennetworks.com.au<br><b>Sent:</b> Tuesday, 3 May 2016 3:03 PM<br><b>Cc:</b> ausnog@lists.ausnog.net<br><b>Subject:</b> Re: [AusNOG] ISP DNS Options<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-AU style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Thanks for the replies, I didn’t say BIND wasn’t working or couldn’t handle that load, I just asked about other options.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-AU style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-AU style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Regards<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-AU style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Paul<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-AU style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma",sans-serif'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma",sans-serif'> Mark Smith [<a href="mailto:markzzzsmith@gmail.com">mailto:markzzzsmith@gmail.com</a>] <br><b>Sent:</b> Tuesday, 3 May 2016 12:56 PM<br><b>To:</b> Mark Andrews<br><b>Cc:</b> <a href="mailto:paul+ausnog@oxygennetworks.com.au">paul+ausnog@oxygennetworks.com.au</a>; <<a href="mailto:ausnog@lists.ausnog.net">ausnog@lists.ausnog.net</a>><br><b>Subject:</b> Re: [AusNOG] ISP DNS Options<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-AU><o:p> </o:p></span></p><p><span lang=EN-AU><br>On 3 May 2016 12:50 PM, "Mark Andrews" <<a href="mailto:marka@isc.org">marka@isc.org</a>> wrote:<br>><br>><br>> In message <<a href="mailto:12115c50-a610-420b-a69d-ee81bac9d276@oxygennetworks.com.au">12115c50-a610-420b-a69d-ee81bac9d276@oxygennetworks.com.au</a>>, "<a href="mailto:paul%2Bausnog@oxygennetworks.com.au">paul+ausnog@oxygennetworks.com.au</a>" writes:<br>> > Hi All, we are looking at DNS Server options for an ISP business of<br>> > around 10,000 customers using ADSL, NBN, Ethernet, and Wireless services.<br>> ><br>> > Currently the BIND solution which is in place is working but we are<br>> > wondering what people would suggest as a next step that is easy to manage<br>> > and cost effective to implement and that can grow with the business to<br>> > handle 20-50,000 services eventually.<br>> ><br>> > Any advice would be appreciated.<br>> > ><br>> > Thanks<br>> > Paul<br>><br>> What makes you think named can't handle that many clients?<br>><o:p></o:p></span></p><p><span lang=EN-AU>+1<o:p></o:p></span></p><p><span lang=EN-AU>Circa 2008 two named servers were handing 50k+ ADSL customers, load shared by alternating anycast DNS server addresses on a per- BRAS bases. That included a view selected based on source address, which may increase processing load over a vanilla named configuration.<o:p></o:p></span></p><p><span lang=EN-AU>CPU utilisation on your named server should be the first way you measure your available DNS server/service capacity. <o:p></o:p></span></p><p><span lang=EN-AU>> Mark<br>> --<br>> Mark Andrews, ISC<br>> 1 Seymour St., Dundas Valley, NSW 2117, Australia<br>> PHONE: +61 2 9871 4742 INTERNET: <a href="mailto:marka@isc.org">marka@isc.org</a><br>> _______________________________________________<br>> AusNOG mailing list<br>> <a href="mailto:AusNOG@lists.ausnog.net">AusNOG@lists.ausnog.net</a><br>> <a href="http://lists.ausnog.net/mailman/listinfo/ausnog">http://lists.ausnog.net/mailman/listinfo/ausnog</a><o:p></o:p></span></p></div></body></html>