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<p class="MsoNormal">You can definitely do this. If nothing else you can use host files, but you can for sure do it with servers as well.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m not sure what type of servers you use for DNS, but if visually seeing a Windows server with it would help, DM me next week and I can show you one.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<div style="mso-line-height-rule:exactly;-webkit-text-size-adjust:100%;"><table cellpadding="0" cellspacing="0" border="0" style="width:100%;"><tr style="font-size:0;"><td align="left" style="vertical-align:top;"><table cellpadding="0" cellspacing="0" border="0" style="font-size:0;"><tr style="font-size:0;"><td style="padding:0 10px 0 0;"> </td><td align="left" style="padding:10px 0 10px 10px;vertical-align:middle;"><table cellpadding="0" cellspacing="0" border="0" style="width:100%;font-size:0;"><tr style="font-size:14.67px;color:#F3800B;font-style:normal;font-weight:700;white-space:nowrap;"><td align="left" style="vertical-align:top;font-family:Calibri,Arial,sans-serif;">Matthew Loraditch<span style="font-family:remialcxesans;font-size:1px;color:#FFFFFF;line-height:1px;"></span></td></tr><tr style="font-size:0;"><td align="left" style="vertical-align:top;"><table cellpadding="0" cellspacing="0" border="0" 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style="font-size:0;"><td align="left" style="vertical-align:top;"><table cellpadding="0" cellspacing="0" border="0" style="font-size:0;color:#808080;font-style:normal;font-weight:400;white-space:nowrap;"><tr style="font-size:14.67px;"><td align="left" style="vertical-align:top;font-family:Calibri,Arial,sans-serif;"><span style="color:#F3800B;">w:</span> <a href="http://www.heliontechnologies.com/" target="_blank" id="LPlnk689713" style="text-decoration:none;color:#808080;"><strong style="font-weight:400;">www.heliontechnologies.com</strong></a></td><td align="left" style="vertical-align:top;font-family:Calibri,Arial,sans-serif;"> | </td><td align="left" style="vertical-align:top;font-family:Calibri,Arial,sans-serif;"><span style="color:#F3800B;">e:</span> <a href="mailto:MLoraditch@heliontechnologies.com" target="_blank" id="LPlnk689713" style="text-decoration:none;color:#808080;"><strong style="font-weight:400;">MLoraditch@heliontechnologies.com</strong></a></td></tr></table></td></tr><tr style="font-size:0;"><td align="left" style="vertical-align:middle;"><table cellpadding="0" cellspacing="0" border="0" style="font-size:0;line-height:normal;"><tr style="font-size:0;"><td align="left" style="vertical-align:bottom;"><a href="http://www.heliontechnologies.com/" target="_blank" id="LPlnk689713" style="text-decoration:none;"><img src="cid:image951677.png@330779CE.11135DE1" width="300" height="75" border="0" title="Helion Technologies" alt="Helion Technologies" style="width:300px;min-width:300px;max-width:300px;height:75px;min-height:75px;max-height:75px;font-size:12px;" /></a></td></tr></table></td></tr><tr style="font-size:0;"><td align="left" style="vertical-align:top;"><table cellpadding="0" cellspacing="0" border="0" style="width:100%;font-size:0;"><tr style="font-size:0;"><td align="left" style="vertical-align:top;"><table cellpadding="0" cellspacing="0" border="0" 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<p class="MsoNormal"><b>From:</b> cisco-voip <cisco-voip-bounces@puck.nether.net>
<b>On Behalf Of </b>Lelio Fulgenzi<br>
<b>Sent:</b> Friday, November 8, 2019 4:41 PM<br>
<b>To:</b> voyp list, cisco-voip (cisco-voip@puck.nether.net) <cisco-voip@puck.nether.net><br>
<b>Subject:</b> Re: [cisco-voip] OT: DNS for data centers<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">So, here’s the catch<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In the DC dns:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">dchost1.catering.uoguelph.ca points to the dc IP address<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">outside of DC dns<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">dchost1.catering.uoguelph.ca points to the public ip address<o:p></o:p></p>
<p class="MsoNormal">host2.catering.uoguelph.ca points to the public ip address (there is no dc equivalent of this host)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">hosts in the DC need to resolve host2.catering.uoguelph.ca as well.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m not sure this works.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">---<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif">Lelio Fulgenzi, B.A.</span></b><span style="font-family:"Arial",sans-serif"> | Senior Analyst<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#333333">Computing and Communications Services</span><span style="font-family:"Arial",sans-serif"> | University of Guelph<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">519-824-4120 Ext. 56354 |
<a href="mailto:lelio@uoguelph.ca">lelio@uoguelph.ca</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><a href="http://www.uoguelph.ca/ccs"><span style="font-family:"Arial",sans-serif;color:blue">www.uoguelph.ca/ccs</span></a><span style="font-family:"Arial",sans-serif;color:#1F497D"> | @UofGCCS on Instagram, Twitter and Facebook<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><img border="0" width="187" height="100" style="width:1.9479in;height:1.0416in" id="_x0000_i1030" src="cid:image001.png@01D59653.C2024BC0" alt="University of Guelph Cornerstone with Improve Life tagline"><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> Matthew Loraditch <<a href="mailto:MLoraditch@heliontechnologies.com">MLoraditch@heliontechnologies.com</a>>
<br>
<b>Sent:</b> Friday, November 8, 2019 4:28 PM<br>
<b>To:</b> Lelio Fulgenzi <<a href="mailto:lelio@uoguelph.ca">lelio@uoguelph.ca</a>>; voyp list, cisco-voip (<a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a>) <<a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a>><br>
<b>Subject:</b> RE: OT: DNS for data centers<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">So to answer your question, I think it’s no, but from a practical standpoint of addressing your problem I would:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I would just create zones just for those specific records on your DC DNS server(s)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">So a zone for oddballserver1.uoguelph.edu pointing to 1.1.1.1 and so on and then forward all other traffic to your regular servers.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We do this in the other direction when we the internal domain doesn’t equal the public domain, but we have certain hosts like the exchange server or adfs server where we need the url to work internally but don’t want to have to deal with
all the normal www and other entries having to be maintained internally.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="color:#F3800B">Matthew Loraditch</span></b><b><span style="font-size:1.0pt;font-family:"remialcxesans",serif;color:white"></span><span style="color:#F3800B"><o:p></o:p></span></b></p>
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<p class="MsoNormal"><b><span style="color:gray">Sr. Network Engineer<o:p></o:p></span></b></p>
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<p class="MsoNormal"><span style="color:#F3800B">p:</span><span style="color:gray"> <a href="tel:443.541.1518" target="_blank"><strong><span style="font-family:"Calibri",sans-serif;color:gray;font-weight:normal;text-decoration:none">443.541.1518</span></strong></a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#F3800B">w:</span><span style="color:gray"> <a href="http://www.heliontechnologies.com/" target="_blank"><strong><span style="font-family:"Calibri",sans-serif;color:gray;font-weight:normal;text-decoration:none">www.heliontechnologies.com</span></strong></a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:gray"> | <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#F3800B">e:</span><span style="color:gray"> <a href="mailto:MLoraditch@heliontechnologies.com" target="_blank"><strong><span style="font-family:"Calibri",sans-serif;color:gray;font-weight:normal;text-decoration:none">MLoraditch@heliontechnologies.com</span></strong></a><o:p></o:p></span></p>
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<p class="MsoNormal"><a href="http://www.heliontechnologies.com/" target="_blank"><span style="font-size:1.0pt;text-decoration:none"><img border="0" width="300" height="75" style="width:3.125in;height:.7812in" id="Picture_x0020_2" src="cid:image002.png@01D59653.C2024BC0" alt="Helion Technologies"></span></a><span style="font-size:1.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal" align="center" style="text-align:center"><a href="https://facebook.com/heliontech" target="_blank"><span style="font-size:1.0pt;text-decoration:none"><img border="0" width="18" height="18" style="width:.1875in;height:.1875in" id="Picture_x0020_3" src="cid:image003.png@01D59653.C2024BC0" alt="Facebook"></span></a><span style="font-size:1.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal" align="center" style="text-align:center"><a href="https://www.linkedin.com/company/helion-technologies" target="_blank"><span style="font-size:1.0pt;text-decoration:none"><img border="0" width="18" height="18" style="width:.1875in;height:.1875in" id="Picture_x0020_5" src="cid:image005.png@01D59653.C2024BC0" alt="LinkedIn"></span></a><span style="font-size:1.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><b>From:</b> cisco-voip <<a href="mailto:cisco-voip-bounces@puck.nether.net">cisco-voip-bounces@puck.nether.net</a>>
<b>On Behalf Of </b>Lelio Fulgenzi<br>
<b>Sent:</b> Friday, November 8, 2019 4:22 PM<br>
<b>To:</b> voyp list, cisco-voip (<a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a>) <<a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a>><br>
<b>Subject:</b> [cisco-voip] OT: DNS for data centers<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Here a question for those with DNS experience….<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We have a requirement for our DC hosts to access some services/hosts using different IP addresses as the rest of campus. Sounds familiar right? We’re investigating the best way to do this.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Are we looking at enabling split view DNS on our campus DNS servers? Or introducing a new set of data center DNS servers?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Here’s the catch…. The DC servers need to access all the rest of the hosts at the same address of the rest of campus.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">What we don’t want to do is replicate our DNS zones in their entirety and then have to update each of them with each new DNS record request that comes in.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The question a few of us had is this.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Can a DNS server which is authoritative for a zone forward requests for that zone if they don’t resolve internally?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The picture would be this. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Our campus DNS servers would remain. Two new DC DNS servers would be created with a handful (ok, more than a handful) of entries. The servers in the DC would point to the DC DNS server to get their information and the DC DNS server would
forward the rest that it can not resolve to our campus DNS servers. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The campus DNS servers would _<i>never</i>_ refer requests to the DC servers.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thoughts? (about this request)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">---<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif">Lelio Fulgenzi, B.A.</span></b><span style="font-family:"Arial",sans-serif"> | Senior Analyst<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#333333">Computing and Communications Services</span><span style="font-family:"Arial",sans-serif"> | University of Guelph<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">519-824-4120 Ext. 56354 |
<a href="mailto:lelio@uoguelph.ca">lelio@uoguelph.ca</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><a href="http://www.uoguelph.ca/ccs"><span style="font-family:"Arial",sans-serif;color:blue">www.uoguelph.ca/ccs</span></a><span style="font-family:"Arial",sans-serif;color:#1F497D"> | @UofGCCS on Instagram, Twitter and Facebook<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><img border="0" width="187" height="100" style="width:1.9479in;height:1.0416in" id="Picture_x0020_1" src="cid:image001.png@01D59653.C2024BC0" alt="University of Guelph Cornerstone with Improve Life tagline"><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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